Pyrrolopyridazinone compound

The present invention relates to a novel pyrrolopyridazinone compound and a pharmaceutically acceptable salt thereof useful as a medicine, and a pharmaceutical composition containing these.

The pyrrolopyridazinone compound according to the present invention has a potent phosphodiesterase 4 (hereinafter abbreviated to as PDE4) inhibiting action, and controls function of cells restrainingly by causing increase in a cyclic adenosine monophosphate (cAMP) concentration in cells. PDE4 localizes in cells which participate in an inflammatory reaction, and further exists in bronchial smooth muscle cells, so that it causes restraint of functions of inflammatory cells and relaxation of bronchial smooth muscle, whereby it is useful, for example, as an anti-inflammatory agent or an inhibitor of respiratory tract contraction.

It has been known pyrrolopyridazinone compounds similar to the compound of the present invention (see Patent literature 1 and Non-patent literatures 1 to 3), but it has been not known that these compounds have a PDE4 inhibitory activity.

As a PDE4 inhibitor, it has already been known compounds such as xanthine derivatives, Rolipram analogues, or nitroquazone derivatives, etc., but these inhibitors could not be used clinically since they causes severe vomit or nausea as side effects (see Non-patent literature 4). In recent years, PDE4 inhibitors improved in side effects such as vomit and nausea have been reported that they are useful for treatment of asthma, chronic obstructive pulmonary disease (hereinafter also referred to as COPD) and allergic coryza (see Non-patent literatures 5 to 7).

However, it cannot be said that they have a clinically sufficient effects even in compounds in which vomit or nausea as side effects are improved with a certain extent.

Patent literature 1: WO 01/96336 pamphlet Non-patent literature 1: Chem. Pharm. Bull., 50, 754 (2002) Non-patent literature 2: Heterocycles, 43, 1863 (1996) Non-patent literature 3: Heterocycles, 60, 2471 (2003) Non-patent literature 4: Exp. Opin. Ther. Patents, 7, 989 (1997) Non-patent literature 5: Lancet, 358, 265 (2001) Non-patent literature 6: J. Allergy Clin. Immunol., 108, 530 (2001) Non-patent literature 7: Eur. Respir. J., 10, 1008 (1997)

Problems to be Solved by the Invention

The present inventors have intensively studied on syntheses and pharmacological effects of compounds having PDE4 inhibitory activity and less side effects, and as a result, they have found that a novel pyrrolopyridazinone compound is a compound having a potent PDE4 inhibitory activity, excellent oral absorbability and continuity of action, and causing less vomit or nausea as side effects, whereby the present invention has been accomplished. Accordingly, the present invention is to provide a novel pyrrolopyridazinone compound and a pharmaceutically acceptable salt thereof having a potent PDE4 inhibitory activity, excellent oral absorbability and continuity of action, and causing less vomit or nausea as side effects, and a pharmaceutical composition containing these.

Means to Solve the Problems

The present invention relates to a novel pyrrolopyridazinone compound and a pharmaceutically acceptable salt thereof, having a potent PDE4 inhibitory activity, excellent oral absorbability and continuity of action, and causing less vomit or nausea as side effects.

The “pyrrolopyridazinone compound” of the present invention means a compound represented by the following formula (1).

A pyrrolopyridazinone compound represented by

wherein R 1 represents a C 1 -C 2 alkyl group or a halogeno C 1 -C 2 alkyl group, R 2 represents a C 3 -C 5 cycloalkyl group, a (C 3 -C 5 cycloalkyl)C 1 -C 2 alkyl group or a C 1 -C 3 alkyl group, R 3 represents a hydrogen atom, or a methylene group or a cis-vinylene group each of which is a group for constituting a substituted oxygen-containing heterocyclic ring in combination with the group —O—R 2 ,

R 4 represents a hydrogen atom, a halogen atom, a C 1 -C 8 alkyl group, a C 2 -C 6 alkenyl group, a C 2 -C 6 alkynyl group, a hydroxy C 3 -C 6 alkenyl group, a hydroxy C 3 -C 6 alkynyl group, a C 1 -C 6 alkyl group substituted by a substituent(s) selected from Substituent group (a), a C 3 -C 6 cycloalkyl group which may be substituted by a substituent(s) selected from Substituent group (b), “a C 1 -C 3 alkyl group which is substituted by a C 3 -C 6 cycloalkyl group which may be substituted by a substituent(s) selected from Substituent group (b), and which may be substituted by a hydroxy group”, an aromatic ring group or heteroaromatic ring group each of which may be substituted by a substituent(s) selected from Substituent group (c), or “C 1 -C 2 alkyl group which is substituted by an aromatic ring group or heteroaromatic ring group each of which may be substituted by a substituent(s) selected from Substituent group (c), and which may be substituted by a hydroxy group”, Substituent group (a) represents a halogen atom, a hydroxy group, a cyano group, a carboxy group, a C 1 -C 5 alkoxy group, a halogeno C 1 -C 4 alkoxy group, a C 3 -C 6 cycloalkoxy group, a (C 3 -C 6 cycloalkyl) C 1 -C 2 alkoxy group, a C 1 -C 4 alkoxycarbonyl group, a C 2 -C 4 alkanoyl group, a C 2 -C 4 alkanoyloxy group or a C 1 -C 4 alkyl-substituted amino group, Substituent group (b) represents a hydroxy group or a halogen atom, Substituent group (c) represents a halogen atom, a hydroxy group, a cyano group, a nitro group, a carboxy group, a C 1 -C 5 alkoxy group, a C 1 -C 4 alkoxycarbonyl group, a C 2 -C 4 alkanoyloxy group, a C 1 -C 4 alkyl-substituted amino group or a C 1 -C 4 alkyl group which may be substituted by a substituent(s) selected from the group consisting of (a halogen atom, a hydroxy group and a carboxy group),

or a pharmaceutically acceptable salt thereof.

In the compound represented by the above-mentioned formula (1), a “C 1 -C 2 alkyl group”, and a “C 1 -C 2 alkyl group portion” of the halogeno C 1 -C 2 alkyl group represented by R 1 , a “C 1 -C 2 alkyl group portion” of the (C 3 -C 4 cycloalkyl)-C 1 -C 2 alkyl group represented by R 2 , and a “C 1 -C 2 alkyl group portion” in the “C 1 -C 2 alkyl group which is substituted by an aromatic ring group or heteroaromatic ring group each of which may be substituted by a substituent(s) selected from Substituent group (c), and may be substituted by a hydroxy group” represented by R 4 each means the “C 1 -C 2 alkyl group” having the same meaning, and such a “C 1 -C 2 alkyl group” may be mentioned, for example, a methyl or ethyl group, preferably a methyl group.

The “halogeno portion” of the halogeno C 1 -C 2 alkyl group represented by R 1 means a halogen atom such as a fluorine or chlorine atom, etc., preferably a fluorine atom.

As the “halogeno C 1 -C 2 alkyl group” represented by R 1 , there may be mentioned, for example, a fluoromethyl, difluoromethyl, trifluoromethyl, 2-fluoroethyl, 2,2-difluoroethyl, 2,2,2-trifluoroethyl, chloromethyl, dichloromethyl, trichloromethyl, 2-chloroethyl, 2,2-dichloroethyl or 2,2,2-trichloroethyl group, etc., preferably a fluoromethyl, difluoromethyl, chloromethyl or dichloromethyl group, more preferably a difluoromethyl group.

As R 1 , there may be preferably mentioned a methyl or difluoromethyl group, more preferably difluoromethyl group.

As the “C 3 -C 5 cycloalkyl group” represented by R 2 , there may be mentioned, for example, a cyclopropyl, cyclobutyl or cyclopentyl group, preferably a cyclopropyl or cyclobutyl group.

As the “(C 3 -C 5 cycloalkyl)C 1 -C 2 alkyl group” represented by R 2 , there may be mentioned, for example, a cyclopropylmethyl, 1-cyclopropylethyl, 2-cyclopropylethyl, cyclobutylmethyl, 1-cyclobutylethyl, 2-cyclobutylethyl, cyclopentylmethyl, 1-cyclopentylethyl or 2-cyclopentylethyl group, preferably a cyclopropylmethyl or cyclobutylmethyl group.

As the “C 1 -C 3 alkyl group” represented by R 2 , there may be mentioned, for example, a straight or branched C 1 -C 3 alkyl group such as a methyl, ethyl, propyl or isopropyl group, preferably an ethyl or isopropyl group.

As R 2 , there may be preferably mentioned a cyclopropyl, cyclobutyl, cyclopentyl, cyclopropylmethyl, cyclobutylmethyl, ethyl or isopropyl group, more preferably a cyclopropyl, cyclobutyl, cyclopentyl, cyclopropylmethyl or isopropyl group, particularly preferably a cyclopropyl or cyclopropylmethyl group.

R 3 represents a hydrogen atom, or a methylene group or a cis-vinylene group for constituting a substituted oxygen-containing heterocyclic ring in combination with the group —O—R 2 .

The substituted oxygen-containing hetero ring formed by R 3 in combination with the group —O—R 2 is a substituted oxygen-containing hetero ring constituted by a tetrahydrofuran ring or 3,6-dihydro-2H-pyran ring, and as a substituent(s) on the ring, there may be mentioned, for example, a 1,2-ethylene, 1,3-propylene, 1,4-butylene, cyclopropyl, cyclobutyl or a methyl group, etc.

A substituted position on the ring is at the carbon atom which directly binds to an oxygen atom of the group —O—R 2 . A number of the substituent(s) on the ring is 1 or 2, and when the substituents are of a plural number, they may be the same or different from each other.

As the substituted oxygen-containing hetero ring formed by R 3 in combination with the group —O—R 2 , there may be preferably mentioned a 2,2-(1,2-ethylene)-tetrahydrofuran ring, 2,2-(1,3-propylene)-tetrahydrofuran ring, 2,2-(1,4-butylene)-tetrahydrofuran ring, 2-cyclopropyl-tetrahydrofuran ring, 2-cyclobutyl-tetrahydrofuran ring, 2,2-dimethyl-tetrahydrofuran ring, 6,6-(1,2-ethylene)-3,6-dihydro-2H-pyran ring, 6,6-(1,3-propylene)-3,6-dihydro-2H-pyran ring, 6,6-(1,4-butylene)-3,6-dihydro-2H-pyran ring, 6-cyclopropyl-3,6-dihydro-2H-pyran ring, 6-cyclobutyl-3,6-dihydro-2H-pyran ring or 6,6-dimethyl-3,6-dihydro-2H-pyran ring, more preferably a 2,2-(1,4-butylene)-tetrahydrofuran ring, 6,6-(1,3-propylene)-3,6-dihydro-2H-pyran ring, 6,6-(1,4-butylene)-3,6-dihydro-2H-pyran ring, 6-cyclopropyl-3,6-dihydro-2H-pyran ring or 6,6-dimethyl-3,6-dihydro-2H-pyran ring.

As the “halogen atom” which is a substituent(s) of R 4 , there may be mentioned, for example, a fluorine, chlorine, bromine or iodine atom, preferably a chlorine, bromine or iodine atom, more preferably a chlorine or bromine atom.

The halogen atoms which are a substituent(s) in Substituent group (a), Substituent group (b) and Substituent group (c) represented by R 4 , and the halogen atom in “a C 1 -C 4 alkyl group which may be substituted by a substituent(s) selected from the group consisting of (a halogen atom, a hydroxy group, and a carboxy group)” of Substituent group (c) each means “a halogen atom” having the same meanings, and such a halogen atom may be mentioned, for example, a fluorine, chlorine, bromine or iodine atom, preferably a fluorine, chlorine or bromine atom, more preferably a fluorine or chlorine atom.

As the “C 1 -C 8 alkyl group” of R 4 , there may be mentioned, for example, a straight or branched C 1 -C 8 alkyl group such as a methyl, ethyl, propyl, isopropyl, butyl, isobutyl, sec-butyl, tert-butyl, pentyl, isopentyl, neopentyl, tert-pentyl, 1-methylbutyl, 2-methylbutyl, 1,2-dimethylpropyl, 1-ethylpropyl, hexyl, 1-methylpentyl, 2-methylpentyl, 3-methylpentyl, 4-methylpentyl, 1-ethylbutyl, 2-ethylbutyl, 1,1-dimethylbutyl, 2,2-dimethylbutyl, 3,3-dimethylbutyl, 1,3-dimethylbutyl, 2,3-dimethylbutyl, heptyl, 1-methylhexyl, 2-methylhexyl, 3-methylhexyl, 4-methylhexyl, 5-methylhexyl, 1-ethylpentyl, 2-ethylpentyl, 3-ethylpentyl, 1,2-dimethylpentyl, 1,3-dimethylpentyl, 1,4-dimethylpentyl, 2,3-dimethylpentyl, 2,4-dimethylpentyl, 3,4-dimethylpentyl, 1,1-dimethylpentyl, 2,2-dimethylpentyl, 3,3-dimethylpentyl, 4,4-dimethylpentyl, 1-methyl-2-ethylbutyl, octyl, 1-methylheptyl, 2-methylheptyl, 3-methylheptyl, 4-methylheptyl, 5-methylheptyl, 6-methylheptyl, 1-ethylhexyl, 2-ethylhexyl, 3-ethylhexyl, 4-ethylhexyl, 1,2-dimethylhexyl, 1,3-dimethylhexyl, 1,4-dimethylhexyl, 1,5-dimethylhexyl, 2,3-dimethylhexyl, 2,4-dimethylhexyl, 2,5-dimethylhexyl, 3,4-dimethylhexyl, 3,5-dimethylhexyl, 1,1-dimethylhexyl, 2,2-dimethylhexyl, 3,3-dimethylhexyl, 4,4-dimethylhexyl, 5,5-dimethylhexyl, 1-methyl-3-ethylpentyl, 2-methyl-3-ethylpentyl, 2-propylpentyl or 2,2,3,3-tetramethylbutyl group, etc., preferably a methyl, ethyl, propyl, isopropyl, butyl, isobutyl, pentyl, isopentyl, neopentyl, 2-methylbutyl, hexyl, 2-methylpentyl, 3-methylpentyl, 4-methylpentyl, 2-ethylbutyl, 2,2-dimethylbutyl, 3,3-dimethylbutyl, 2,3-dimethylbutyl, heptyl, 2-methylhexyl, 3-methylhexyl, 4-methylhexyl, 5-methylhexyl, 2,3-dimethylpentyl, 2,4-dimethylpentyl, 3,4-dimethylpentyl, 2,2-dimethylpentyl, 3,3-dimethylpentyl, 4,4-dimethylpentyl, octyl, 2-methylheptyl, 3-methylheptyl, 4-methylheptyl, 5-methylheptyl, 6-methylheptyl, 2-ethylhexyl, 3-ethylhexyl, 4-ethylhexyl, 2,3-dimethylhexyl, 2,4-dimethylhexyl, 2,5-dimethylhexyl, 3,4-dimethylhexyl, 3,5-dimethylhexyl, 2,2-dimethylhexyl, 3,3-dimethylhexyl, 4,4-dimethylhexyl, 5,5-dimethylhexyl, 2-methyl-3-ethylpentyl, 2-propylpentyl or 2,2,3,3-tetramethylbutyl group, more preferably a methyl, ethyl, propyl, isopropyl, butyl, isobutyl, pentyl, isopentyl, neopentyl, hexyl, 2-ethylbutyl, 2,2-dimethylbutyl, 3,3-dimethylbutyl, heptyl, 2,2-dimethylpentyl, 3,3-dimethylpentyl, 4,4-dimethylpentyl, octyl, 4-ethylhexyl, 2,2-dimethylhexyl, 3,3-dimethylhexyl, 4,4-dimethylhexyl, 5,5-dimethylhexyl, 2-propylpentyl or 2,2,3,3-tetramethylbutyl group, particularly preferably a methyl, ethyl, propyl, isopropyl, butyl, isobutyl, pentyl, isopentyl, neopentyl, hexyl, 2-ethylbutyl, 2,2-dimethylbutyl and 3,3-dimethylbutyl group.

The “C 1 -C 5 alkoxy group”s in Substituent group (a) and Substituent group (c) each means a “C 1 -C 5 alkoxy group” having the same meanings, and such a “C 1 -C 5 alkoxy group” may be mentioned a straight or branched C 1 -C 5 alkoxy group such as a methoxy, ethoxy, propoxy, isopropoxy, butoxy, isobutoxy, sec-butoxy, tert-butoxy, pentoxy, isopentoxy, neopentoxy, tert-pentoxy, 1,2-dimethylpropoxy, 1-ethylpropoxy, 1-methylbutoxy and 2-methylbutoxy group.

As the “halogeno C 1 -C 4 alkoxy group” in Substituent group (a), there may be mentioned a straight or branched halogeno C 1 -C 4 alkoxy group such as a difluoromethoxy, dichloromethoxy, dibromomethoxy, diiodomethoxy, trifluoromethoxy, trichloromethoxy, 2-fluoroethoxy, 2-chloroethoxy, 2-bromoethoxy, 2,2-difluoroethoxy, 2,2,2-trifluoroethoxy, perfluoroethoxy, 2,2-dichloroethoxy, 2,2,2-trichloroethoxy, 2-fluoropropoxy, 3-fluoropropoxy, 3,3,3-trifluoropropoxy, perfluoropropoxy, 2-fluoro-1-methylethoxy, 2,2-difluoro-1-methylethoxy, 2,2,2-trifluoro-1-methylethoxy, 4-fluorobutoxy and perfluorobutoxy group, etc.

As the “C 3 -C 6 cycloalkoxy group” in Substituent group (a), there may be mentioned, for example, a cyclopropoxy, cyclobutoxy, cyclopentoxy or cyclohexyloxy group.

As the “(C 3 -C 6 cycloalkyl)C 1 -C 2 alkoxy group” in Substituent group (a), there may be mentioned, for example, a cyclopropylmethoxy, 1-cyclopropylethoxy, 2-cyclopropylethoxy, cyclobutylmethoxy, 1-cyclobutylethoxy, 2-cyclobutylethoxy, cyclopentylmethoxy, 1-cyclopentylethoxy, 2-cyclopentylethoxy, cyclohexylmethoxy, 1-cyclohexylethoxy or 2-cyclohexylethoxy group.

The “C 1 -C 4 alkoxycarbonyl group”s in Substituent group (a) and Substituent group (c) each means a “C 1 -C 4 alkoxycarbonyl group” having the same meanings, and such a “C 1 -C 4 alkoxycarbonyl group” may be mentioned, for example, a straight or branched C 1 -C 4 alkoxycarbonyl group such as a methoxycarbonyl, ethoxycarbonyl, propoxycarbonyl, isopropoxycarbonyl, butoxycarbonyl, isobutoxycarbonyl, sec-butoxycarbonyl and tert-butoxycarbonyl group.

As the “C 2 -C 4 alkanoyl group” in Substituent group (a), there may be mentioned, for example, a straight or branched C 2 -C 4 alkanoyl group such as an acetyl, propionyl, butyryl and isobutyryl group.

The “C 2 -C 4 alkanoyloxy group”s in Substituent group (a) and Substituent group (c) each means a “C 2 -C 4 alkanoyloxy group” having the same meanings, and such a “C 2 -C 4 alkanoyloxy group” may be mentioned, for example, a straight or branched C 2 -C 4 alkanoyloxy group such as an acetyloxy, propionyloxy, butyryloxy and isobutyryloxy group.

The C 1 -C 4 alkyl-substituted amino groups in Substituent group (a) and Substituent group (c) are an amino group which is substituted by 1 or 2 alkyl groups selected from a straight or branched C 1 -C 4 alkyl group such as a methyl, ethyl, propyl, isopropyl, butyl, isobutyl, sec-butyl and tert-butyl group (when 2 substituents are substituted, the respective alkyl groups may be the same or different from each other), and there may be mentioned, for example, a methylamino, ethylamino, propylamino, isopropylamino, butylamino, isobutylamino, sec-butylamino, tertbutylamino, dimethylamino, diethylamino, dipropylamino, dibutylamino, diisopropylamino, diisobutylamino, ethylmethylamino, methylpropylamino, butylmethylamino, isopropylmethylamino or isobutylmethylamino group, etc., preferably a dimethylamino, diethylamino, dipropylamino, dibutylamino, diisopropylamino, diisobutylamino, ethylmethylamino, methylpropylamino, butylmethylamino, isopropylmethylamino or isobutylmethylamino group, more preferably a dimethylamino, diethylamino, dipropylamino, dibutylamino or diisopropylamino group.

As Substituent group (a), they are preferably a fluorine atom, chlorine atom, hydroxy, cyano, carboxy, methoxy, ethoxy, propoxy, isopropoxy, butoxy, isobutoxy, sec-butoxy, tert-butoxy, 1-ethylpropoxy, 2-fluoroethoxy, 2,2-difluoroethoxy, 2,2,2-trifluoroethoxy, cyclopropoxy, cyclobutoxy, cyclopropylmethoxy, 1-cyclopropylethoxy, 2-cyclopropylethoxy, cyclobutylmethoxy, methoxycarbonyl, ethoxycarbonyl, propoxycarbonyl, isopropoxycarbonyl, butoxycarbonyl, isobutoxycarbonyl, acetyl, propionyl, butyryl, isobutyryl, acetyloxy, propionyloxy, butyryloxy, isobutyryloxy, dimethylamino, diethylamino, dipropylamino, dibutylamino, diisopropylamino, diisobutylamino, ethylmethylamino, methylpropylamino, butylmethylamino, isopropylmethylamino or isobutylmethylamino group, more preferably a fluorine atom, chlorine atom, hydroxy, cyano, carboxy, methoxy, ethoxy, propoxy, isopropoxy, butoxy, isobutoxy, sec-butoxy, tert-butoxy, 1-ethylpropoxy, 2-fluoroethoxy, 2,2,2-trifluoroethoxy, cyclopropoxy, cyclobutoxy, cyclopropylmethoxy, cyclobutylmethoxy, methoxycarbonyl, ethoxycarbonyl, propoxycarbonyl, isopropoxycarbonyl, butoxycarbonyl, isobutoxycarbonyl, dimethylamino, diethylamino, dipropylamino, dibutylamino, diisopropylamino or diisobutylamino group, particularly preferably a fluorine atom, chlorine atom, hydroxy, carboxy, methoxy, ethoxy, propoxy, isopropoxy, butoxy, isobutoxy, sec-butoxy, tert-butoxy, 1-ethylpropoxy, 2-fluoroethoxy, cyclobutoxy, cyclopropylmethoxy, methoxycarbonyl, ethoxycarbonyl, propoxycarbonyl, isopropoxycarbonyl or butoxycarbonyl group.

A number of these substituent(s) of the C 1 -C 6 alkyl group substituted by a substituent(s) selected from Substituent group (a) is, for example, 1 to 4, preferably 1 to 3, and when they are a plural number, these substituents may be the same or different from each other.

As the “C 1 -C 6 alkyl group” of the C 1 -C 6 alkyl group substituted by a substituent(s) selected from Substituent group (a) of R 4 , there may be mentioned, for example, a straight or branched C 1 -C 6 alkyl group such as a methyl, ethyl, propyl, isopropyl, butyl, isobutyl, sec-butyl, tert-butyl, pentyl, isopentyl, neopentyl, tert-pentyl, 1-methylbutyl, 2-methylbutyl, 1,2-dimethylpropyl, 1-ethylpropyl, hexyl, 1-methylpentyl, 2-methylpentyl, 3-methylpentyl, 4-methylpentyl, 1-ethylbutyl, 2-ethylbutyl, 1,1-dimethylbutyl, 2,2-dimethylbutyl, 3,3-dimethylbutyl, 1,3-dimethylbutyl and 2,3-dimethylbutyl group, etc., preferably methyl, ethyl, propyl, isopropyl, butyl, isobutyl, pentyl, isopentyl, 2-methylbutyl, hexyl, 2-methylpentyl, 3-methylpentyl, 4-methylpentyl or 2-ethylbutyl group, more preferably methyl, ethyl, propyl, isopropyl, butyl, isobutyl, pentyl, isopentyl, hexyl or 2-ethylbutyl group, particularly preferably methyl, ethyl, propyl, isopropyl, butyl, isobutyl, isopentyl or 2-ethylbutyl group.

As the “C 1 -C 6 alkyl group substituted by a substituent(s) selected from Substituent group (a)” of R 4 , there may be mentioned, for example, trifluoromethyl, 2,2,2-trifluoroethyl, 3,3,3-trifluoropropyl, 2-chloroethyl, 2,2-dichloroethyl, 2,2,2-trichloroethyl, hydroxymethyl, 1-hydroxyethyl, 2-hydroxyethyl, 1-hydroxypropyl, 2-hydroxypropyl, 3-hydroxypropyl, 1-hydroxybutyl, 2-hydroxybutyl, 3-hydroxybutyl, 4-hydroxybutyl, 1-hydroxypentyl, 5-hydroxypentyl, 1-hydroxyhexyl, 6-hydroxyhexyl, 1-hydroxy-2-methylpropyl, 2-hydroxy-2-methylpropyl, 1-hydroxy-3-methylbutyl, 3-hydroxy-3-methylbutyl, 1-hydroxy-4-methylpentyl, 4-hydroxy-4-methylpentyl, 2-ethyl-2-hydroxybutyl, cyanomethyl, 1-cyanoethyl, 2-cyanoethyl, 1-cyanopropyl, 2-cyanopropyl, 3-cyanopropyl, 1-cyanobutyl, 2-cyanobutyl, 3-cyanobutyl, 4-cyanobutyl, 1-cyanopentyl, 5-cyanopentyl, 1-cyanohexyl, 6-cyanohexyl, 1-cyano-2-methylpropyl, 2-cyano-2-methylpropyl, 1-cyano-3-methylbutyl, 3-cyano-3-methylbutyl, 1-cyano-4-methylpentyl, 4-cyano-4-methylpentyl, 2-cyano-2-ethylbutyl, carboxymethyl, 1-carboxyethyl, 2-carboxyethyl, 1-carboxypropyl, 2-carboxypropyl, 3-carboxypropyl, 1-carboxybutyl, 2-carboxybutyl, 3-carboxybutyl, 4-carboxybutyl, 1-carboxypentyl, 5-carboxypentyl, 1-carboxyhexyl, 6-carboxyhexyl, 1-carboxy-2-methylpropyl, 2-carboxy-2-methylpropyl, 1-carboxy-3-methylbutyl, 3-carboxy-3-methylbutyl, 1-carboxy-4-methylpentyl, 4-carboxy-4-methylpentyl, 2-carboxy-2-ethylbutyl,

methoxymethyl, 1-methoxyethyl, 2-methoxyethyl, 1-methoxypropyl, 2-methoxypropyl, 3-methoxypropyl, 1-methoxybutyl, 2-methoxybutyl, 3-methoxybutyl, 4-methoxybutyl, 1-methoxypentyl, 5-methoxypentyl, 1-methoxyhexyl, 6-methoxyhexyl, 1-methoxy-2-methylpropyl, 2-methoxy-2-methylpropyl, 1-methoxy-3-methylbutyl, 3-methoxy-3-methylbutyl, 1-methoxy-4-methylpentyl, 4-methoxy-4-methylpentyl, 2-ethyl-2-methoxybutyl, ethoxymethyl, 1-ethoxyethyl, 2-ethoxyethyl, 1-ethoxypropyl, 2-ethoxypropyl, 3-ethoxypropyl, 1-ethoxybutyl, 2-ethoxybutyl, 3-ethoxybutyl, 4-ethoxybutyl, 1-ethoxypentyl, 5-ethoxypentyl, 1-ethoxyhexyl, 6-ethoxyhexyl, 1-ethoxy-2-methylpropyl, 2-ethoxy-2-methylpropyl, 1-ethoxy-3-methylbutyl, 3-ethoxy-3-methylbutyl, 1-ethoxy-4-methylpentyl, 4-ethoxy-4-methylpentyl, 2-ethoxy-2-ethylbutyl, propoxymethyl, 1-propoxyethyl, 2-propoxyethyl, 1-propoxypropyl, 2-propoxypropyl, 3-propoxypropyl, 1-propoxybutyl, 2-propoxybutyl, 3-propoxybutyl, 4-propoxybutyl, 1-propoxypentyl, 5-propoxypentyl, 1-propoxyhexyl, 6-propoxyhexyl, 2-methyl-1-propoxypropyl, 2-methyl-2-propoxypropyl, 3-methyl-1-propoxybutyl, 3-methyl-3-propoxybutyl, 4-methyl-1-propoxypentyl, 4-methyl-4-propoxypentyl, 2-ethyl-2-propoxybutyl, butoxymethyl, 1-butoxyethyl, 2-butoxyethyl, 1-butoxypropyl, 2-butoxypropyl, 3-butoxypropyl, 1-butoxybutyl, 2-butoxybutyl, 3-butoxybutyl, 4-butoxybutyl, 1-butoxypentyl, 5-butoxypentyl, 1-butoxyhexyl, 6-butoxyhexyl, 1-butoxy-2-methylpropyl, 2-butoxy-2-methylpropyl, 1-butoxy-3-methylbutyl, 3-butoxy-3-methylbutyl, 1-butoxy-4-methylpentyl, 4-butoxy-4-methylpentyl, 2-butoxy-2-ethylbutyl, isopropoxymethyl, 1-isopropoxyethyl, 2-isopropoxyethyl, 1-isopropoxypropyl, 2-isopropoxypropyl, 3-isopropoxypropyl, 1-isopropoxybutyl, 2-isopropoxybutyl, 3-isopropoxybutyl, 4-isopropoxybutyl, 1-isopropoxypentyl, 5-isopropoxypentyl, 1-isopropoxyhexyl, 6-isopropoxyhexyl, 1-isopropoxy-2-methylpropyl, 2-isopropoxy-2-methylpropyl, 1-isopropoxy-3-methylbutyl, 3-isopropoxy-3-methylbutyl, 1-isopropoxy-4-methylpentyl, 4-isopropoxy-4-methylpentyl, 2-ethyl-2-isopropoxybutyl, isobutoxymethyl, 1-isobutoxyethyl, 2-isobutoxyethyl, sec-butoxymethyl, 1-(sec-butoxy)ethyl, 2-(sec-butoxy)ethyl, tert-butoxymethyl, 1-(tert-butoxy)ethyl, 2-(tert-butoxy)ethyl, 1-ethylpropoxymethyl, 1-(1-ethylpropoxy)ethyl, 2-(1-ethylpropoxy)ethyl,

2-fluoroethoxymethyl, 1-(2-fluoroethoxy)ethyl, 2-(2-fluoroethoxy)ethyl, 1-(2-fluoroethoxy)propyl, 2-(2-fluoroethoxy)propyl, 3-(2-fluoroethoxy)propyl, 1-(2-fluoroethoxy)butyl, 2-(2-fluoroethoxy)butyl, 3-(2-fluoroethoxy)butyl, 4-(2-fluoroethoxy)butyl, 1-(2-fluoroethoxy)pentyl, 5-(2-fluoroethoxy)pentyl, 1-(2-fluoroethoxy)hexyl, 6-(2-fluoroethoxy)hexyl, 1-(2-fluoroethoxy)-2-methylpropyl, 2-(2-fluoroethoxy)-2-methylpropyl, 1-(2-fluoroethoxy)-3-methylbutyl, 3-(2-fluoroethoxy)-3-methylbutyl, 1-(2-fluoroethoxy)-4-methylpentyl, 4-(2-fluoroethoxy)-4-methylpentyl, 2-ethyl-2-(2-fluoroethoxy)butyl, (2,2-difluoroethoxy)methyl, 1-(2,2-difluoroethoxy)ethyl, 2-(2,2-difluoroethoxy)ethyl, 1-(2,2-difluoroethoxy)propyl, 2-(2,2-difluoroethoxy)propyl, 3-(2,2-difluoroethoxy)propyl, 1-(2,2-difluoroethoxy)butyl, 2-(2,2-difluoroethoxy)butyl, 3-(2,2-difluoroethoxy)butyl, 4-(2,2-difluoroethoxy)butyl, 1-(2,2-difluoroethoxy)pentyl, 5-(2,2-difluoroethoxy)pentyl, 1-(2,2-difluoroethoxy)hexyl, 6-(2,2-difluoroethoxy)hexyl, 1-(2,2-difluoroethoxy)-2-methylpropyl, 2-(2,2-difluoroethoxy)-2-methylpropyl, 1-(2,2-difluoroethoxy)-3-methylbutyl, 3-(2,2-difluoroethoxy)-3-methylbutyl, 1-(2,2-difluoroethoxy)-4-methylpentyl, 4-(2,2-difluoroethoxy)-4-methylpentyl, 2-ethyl-2-(2,2-difluoroethoxy)butyl, (2,2,2-trifluoroethoxy)methyl, 1-(2,2,2-trifluoroethoxy)ethyl, 2-(2,2,2-trifluoroethoxy)ethyl, 1-(2,2,2-trifluoroethoxy)propyl, 2-(2,2,2-trifluoroethoxy)propyl, 3-(2,2,2-trifluoroethoxy)propyl, 1-(2,2,2-trifluoroethoxy)butyl, 2-(2,2,2-trifluoroethoxy)butyl, 3-(2,2,2-trifluoroethoxy)butyl, 4-(2,2,2-trifluoroethoxy)butyl, 1-(2,2,2-trifluoroethoxy)pentyl, 5-(2,2,2-trifluoroethoxy)pentyl, 1-(2,2,2-trifluoroethoxy)hexyl, 6-(2,2,2-trifluoroethoxy)hexyl, 1-(2,2,2-trifluoroethoxy)-2-methylpropyl, 2-(2,2,2-trifluoroethoxy)-2-methylpropyl, 1-(2,2,2-trifluoroethoxy)-3-methylbutyl, 3-(2,2,2-trifluoroethoxy)-3-methylbutyl, 1-(2,2,2-trifluoroethoxy)-4-methylpentyl, 4-(2,2,2-trifluoroethoxy)-4-methylpentyl, 2-ethyl-2-(2,2,2-trifluoroethoxy)butyl, cyclopropoxymethyl, 1-cyclopropoxyethyl, 2-cyclopropoxyethyl, 1-cyclopropoxypropyl, 2-cyclopropoxypropyl, 3-cyclopropoxypropyl, 1-cyclopropoxybutyl, 2-cyclopropoxybutyl, 3-cyclopropoxybutyl, 4-cyclopropoxybutyl, 1-cyclopropoxypentyl, 5-cyclopropoxypentyl, 1-cyclopropoxyhexyl, 6-cyclopropoxyhexyl,

1-cyclopropoxy-2-methylpropyl, 2-cyclopropoxy-2-methylpropyl, 1-cyclopropoxy-3-methylbutyl, 3-cyclopropoxy-3-methylbutyl, 1-cyclopropoxy-4-methylpentyl, 4-cyclopropoxy-4-methylpentyl, 2-cyclopropoxy-2-ethylbutyl, cyclobutoxymethyl, 1-cyclobutoxyethyl, 2-cyclobutoxyethyl, 1-cyclobutoxypropyl, 2-cyclobutoxypropyl, 3-cyclobutoxypropyl, 1-cyclobutoxybutyl, 2-cyclobutoxybutyl, 3-cyclobutoxybutyl, 4-cyclobutoxybutyl, 1-cyclobutoxypentyl, 5-cyclobutoxypentyl, 1-cyclobutoxyhexyl, 6-cyclobutoxyhexyl, 1-cyclobutoxy-2-methylpropyl, 2-cyclobutoxy-2-methylpropyl, 1-cyclobutoxy-3-methylbutyl, 3-cyclobutoxy-3-methylbutyl, 1-cyclobutoxy-4-methylpentyl, 4-cyclobutoxy-4-methylpentyl, 2-cyclobutoxy-2-ethylbutyl, cyclopropylmethoxymethyl, 1-cyclopropylmethoxyethyl, 2-cyclopropylmethoxyethyl, 1-cyclopropylmethoxypropyl, 2-cyclopropylmethoxypropyl, 3-cyclopropylmethoxypropyl, 1-cyclopropylmethoxybutyl, 2-cyclopropylmethoxybutyl, 3-cyclopropylmethoxybutyl, 4-cyclopropylmethoxybutyl, 1-cyclopropylmethoxypentyl, 5-cyclopropylmethoxypentyl, 1-cyclopropylmethoxyhexyl, 6-cyclopropylmethoxyhexyl, 1-cyclopropylmethoxy-2-methylpropyl, 2-cyclopropylmethoxy-2-methylpropyl, 1-cyclopropylmethoxy-3-methylbutyl, 3-cyclopropylmethoxy-3-methylbutyl, 1-cyclopropylmethoxy-4-methylpentyl, 4-cyclopropylmethoxy-4-methylpentyl, 2-cyclopropylmethoxy-2-ethylbutyl, cyclobutylmethoxymethyl, 1-cyclobutylmethoxyethyl, 2-cyclobutylmethoxyethyl, 1-cyclobutylmethoxypropyl, 2-cyclobutylmethoxypropyl, 3-cyclobutylmethoxypropyl, 1-cyclobutylmethoxybutyl, 2-cyclobutylmethoxybutyl, 3-cyclobutylmethoxybutyl, 4-cyclobutylmethoxybutyl, 1-cyclobutylmethoxypentyl, 5-cyclobutylmethoxypentyl, 1-cyclobutylmethoxyhexyl, 6-cyclobutylmethoxyhexyl, 1-cyclobutylmethoxy-2-methylpropyl, 2-cyclobutylmethoxy-2-methylpropyl, 1-cyclobutylmethoxy-3-methylbutyl, 3-cyclobutylmethoxy-3-methylbutyl, 1-cyclobutylmethoxy-4-methylpentyl, 4-cyclobutylmethoxy-4-methylpentyl, 2-cyclobutylmethoxy-2-ethylbutyl,

(1-cyclopropylethoxy)methyl, 2-(1-cyclopropylethoxy)ethyl, 2-(1-cyclopropylethoxy)propyl, 3-(1-cyclopropylethoxy)propyl, 4-(1-cyclopropylethoxy)butyl, 5-(1-cyclopropylethoxy)pentyl, 6-(1-cyclopropylethoxy)hexyl, 2-(1-cyclopropylethoxy)-2-methylpropyl, 3-(1-cyclopropylethoxy)-3-methylbutyl, 4-(1-cyclopropylethoxy)-4-methylpentyl, 2-(1-cyclopropylethoxy)-2-ethylbutyl, (2-cyclopropylethoxy)methyl, 2-(2-cyclopropylethoxy)ethyl, 2-(2-cyclopropylethoxy)propyl, 3-(2-cyclopropylethoxy)propyl, 4-(2-cyclopropylethoxy)butyl, 5-(2-cyclopropylethoxy)pentyl, 6-(2-cyclopropylethoxy)hexyl, 2-(2-cyclopropylethoxy)-2-methylpropyl, 3-(2-cyclopropylethoxy)-3-methylbutyl, 4-(2-cyclopropylethoxy)-4-methylpentyl, 2-(2-cyclopropylethoxy)-2-ethylbutyl,

methoxycarbonylmethyl, 1-methoxycarbonylethyl, 2-methoxycarbonylethyl, 1-methoxycarbonylpropyl, 2-methoxycarbonylpropyl, 3-methoxycarbonylpropyl, 1-methoxycarbonylbutyl, 2-methoxycarbonylbutyl, 3-methoxycarbonylbutyl, 4-methoxycarbonylbutyl, 1-methoxycarbonylpentyl, 5-methoxycarbonylpentyl, 1-methoxycarbonylhexyl, 6-methoxycarbonylhexyl, 1-methoxycarbonyl-2-methylpropyl, 2-methoxycarbonyl-2-methylpropyl, 1-methoxycarbonyl-3-methylbutyl, 3-methoxycarbonyl-3-methylbutyl, 1-methoxycarbonyl-4-methylpentyl, 4-methoxycarbonyl-4-methylpentyl, 2-ethyl-2-methoxycarbonylbutyl, ethoxycarbonylmethyl, 1-ethoxycarbonylethyl, 2-ethoxycarbonylethyl, 1-ethoxycarbonylpropyl, 2-ethoxycarbonylpropyl, 3-ethoxycarbonylpropyl, 1-ethoxycarbonylbutyl, 2-ethoxycarbonylbutyl, 3-ethoxycarbonylbutyl, 4-ethoxycarbonylbutyl, 1-ethoxycarbonylpentyl, 5-ethoxycarbonylpentyl, 1-ethoxycarbonylhexyl, 6-ethoxycarbonylhexyl, 1-ethoxycarbonyl-2-methylpropyl, 2-ethoxycarbonyl-2-methylpropyl, 1-ethoxycarbonyl-3-methylbutyl, 3-ethoxycarbonyl-3-methylbutyl, 1-ethoxycarbonyl-4-methylpentyl, 4-ethoxycarbonyl-4-methylpentyl, 2-ethoxycarbonyl-2-ethylbutyl, propoxycarbonylmethyl, 1-propoxycarbonylethyl, 2-propoxycarbonylethyl, 1-propoxycarbonylpropyl, 2-propoxycarbonylpropyl, 3-propoxycarbonylpropyl, 1-propoxycarbonylbutyl, 2-propoxycarbonylbutyl, 3-propoxycarbonylbutyl, 4-propoxycarbonylbutyl, 1-propoxycarbonylpentyl, 5-propoxycarbonylpentyl, 1-propoxycarbonylhexyl, 6-propoxycarbonylhexyl, 2-methyl-1-propoxycarbonylpropyl, 2-methyl-2-propoxycarbonylpropyl, 3-methyl-1-propoxycarbonylbutyl, 3-methyl-3-propoxycarbonylbutyl, 4-methyl-1-propoxycarbonylpentyl, 4-methyl-4-propoxycarbonylpentyl, 2-ethyl-2-propoxycarbonylbutyl,

butoxycarbonylmethyl, 1-butoxycarbonylethyl, 2-butoxycarbonylethyl, 1-butoxycarbonylpropyl, 2-butoxycarbonylpropyl, 3-butoxycarbonylpropyl, 1-butoxycarbonylbutyl, 2-butoxycarbonylbutyl, 3-butoxycarbonylbutyl, 4-butoxycarbonylbutyl, 1-butoxycarbonylpentyl, 5-butoxycarbonylpentyl, 1-butoxycarbonylhexyl, 6-butoxycarbonylhexyl, 1-butoxycarbonyl-2-methylpropyl, 2-butoxycarbonyl-2-methylpropyl, 1-butoxycarbonyl-3-methylbutyl, 3-butoxycarbonyl-3-methylbutyl, 1-butoxycarbonyl-4-methylpentyl, 4-butoxycarbonyl-4-methylpentyl, 2-butoxycarbonyl-2-ethylbutyl, isopropoxycarbonylmethyl, 1-isopropoxycarbonylethyl, 2-isopropoxycarbonylethyl, 1-isopropoxycarbonylpropyl, 2-isopropoxycarbonylpropyl, 3-isopropoxycarbonylpropyl, 1-isopropoxycarbonylbutyl, 2-isopropoxycarbonylbutyl, 3-isopropoxycarbonylbutyl, 4-isopropoxycarbonylbutyl, 1-isopropoxycarbonylpentyl, 5-isopropoxycarbonylpentyl, 1-isopropoxycarbonylhexyl, 6-isopropoxycarbonylhexyl, 1-isopropoxycarbonyl-2-methylpropyl, 2-isopropoxycarbonyl-2-methylpropyl, 1-isopropoxycarbonyl-3-methylbutyl, 3-isopropoxycarbonyl-3-methylbutyl, 1-isopropoxycarbonyl-4-methylpentyl, 4-isopropoxycarbonyl-4-methylpentyl, 2-ethyl-2-isopropoxycarbonylbutyl,

isobutoxycarbonylmethyl, 1-isobutoxycarbonylethyl, 2-isobutoxycarbonylethyl, 1-isobutoxycarbonylpropyl, 2-isobutoxycarbonylpropyl, 3-isobutoxycarbonylpropyl, 1-isobutoxycarbonylbutyl, 2-isobutoxycarbonylbutyl, 3-isobutoxycarbonylbutyl, 4-isobutoxycarbonylbutyl, 1-isobutoxycarbonylpentyl, 5-isobutoxycarbonylpentyl, 1-isobutoxycarbonylhexyl, 6-isobutoxycarbonylhexyl, 1-isobutoxycarbonyl-2-methylpropyl, 2-isobutoxycarbonyl-2-methylpropyl, 1-isobutoxycarbonyl-3-methylbutyl, 3-isobutoxycarbonyl-3-methylbutyl, 1-isobutoxycarbonyl-4-methylpentyl, 4-isobutoxycarbonyl-4-methylpentyl, 2-ethyl-2-isobutoxycarbonylbutyl, acetyloxymethyl, 1-acetyloxyethyl, 2-acetyloxyethyl, 1-acetyloxypropyl, 2-acetyloxypropyl, 3-acetyloxypropyl, 1-acetyloxybutyl, 2-acetyloxybutyl, 3-acetyloxybutyl, 4-acetyloxybutyl, 1-acetyloxypentyl, 5-acetyloxypentyl, 1-acetyloxyhexyl, 6-acetyloxyhexyl, 1-acetyloxy-2-methylpropyl, 2-acetyloxy-2-methylpropyl, 1-acetyloxy-3-methylbutyl, 3-acetyloxy-3-methylbutyl, 1-acetyloxy-4-methylpentyl, 4-acetyloxy-4-methylpentyl, 2-acetyloxy-2-ethylbutyl,

propionyloxymethyl, 1-propionyloxyethyl, 2-propionyloxyethyl, 1-propionyloxypropyl, 2-propionyloxypropyl, 3-propionyloxypropyl, 1-propionyloxybutyl, 2-propionyloxybutyl, 3-propionyloxybutyl, 4-propionyloxybutyl, 1-propionyloxypentyl, 5-propionyloxypentyl, 1-propionyloxyhexyl, 6-propionyloxyhexyl, 2-methyl-1-propionyloxypropyl, 2-methyl-2-propionyloxypropyl, 3-methyl-1-propionyloxybutyl, 3-methyl-3-propionyloxybutyl, 4-methyl-1-propionyloxypentyl, 4-methyl-4-propionyloxypentyl, 2-ethyl-2-propionyloxybutyl, butyryloxymethyl, 1-butyryloxyethyl, 2-butyryloxyethyl, 1-butyryloxypropyl, 2-butyryloxypropyl, 3-butyryloxypropyl, 1-butyryloxybutyl, 2-butyryloxybutyl, 3-butyryloxybutyl, 4-butyryloxybutyl, 1-butyryloxypentyl, 5-butyryloxypentyl, 1-butyryloxyhexyl, 6-butyryloxyhexyl, 1-butyryloxy-2-methylpropyl, 2-butyryloxy-2-methylpropyl, 1-butyryloxy-3-methylbutyl, 3-butyryloxy-3-methylbutyl, 1-butyryloxy-4-methylpentyl, 4-butyryloxy-4-methylpentyl, 2-butyryloxy-2-ethylbutyl, acetylmethyl, 1-acetylethyl, 2-acetylethyl, 1-acetylpropyl, 2-acetylpropyl, 3-acetylpropyl, 1-acetylbutyl, 2-acetylbutyl, 3-acetylbutyl, 4-acetylbutyl, 1-acetylpentyl, 5-acetylpentyl, 1-acetylhexyl, 6-acetylhexyl, 1-acetyl-2-methylpropyl, 2-acetyl-2-methylpropyl, 1-acetyl-3-methylbutyl, 3-acetyl-3-methylbutyl, 1-acetyl-4-methylpentyl, 4-acetyl-4-methylpentyl, 2-acetyl-2-ethylbutyl,

propionylmethyl, 1-propionylethyl, 2-propionylethyl, 1-propionylpropyl, 2-propionylpropyl, 3-propionylpropyl, 1-propionylbutyl, 2-propionylbutyl, 3-propionylbutyl, 4-propionylbutyl, 1-propionylpentyl, 5-propionylpentyl, 1-propionylhexyl, 6-propionylhexyl, 2-methyl-1-propionylpropyl, 2-methyl-2-propionylpropyl, 3-methyl-1-propionylbutyl, 3-methyl-3-propionylbutyl, 4-methyl-1-propionylpentyl, 4-methyl-4-propionylpentyl, 2-ethyl-2-propionylbutyl, butyrylmethyl, 1-butyrylethyl, 2-butyrylethyl, 1-butyrylpropyl, 2-butyrylpropyl, 3-butyrylpropyl, 1-butyrylbutyl, 2-butyrylbutyl, 3-butyrylbutyl, 4-butyrylbutyl, 1-butyrylpentyl, 5-butyrylpentyl, 1-butyrylhexyl, 6-butyrylhexyl, 1-butyryl-2-methylpropyl, 2-butyryl-2-methylpropyl, 1-butyryl-3-methylbutyl, 3-butyryl-3-methylbutyl, 1-butyryl-4-methylpentyl, 4-butyryl-4-methylpentyl, 2-butyryl-2-ethylbutyl, dimethylaminomethyl, 2-dimethylaminoethyl, 3-dimethylaminopropyl, 4-dimethylaminobutyl, 5-dimethylaminopentyl, 6-dimethylaminohexyl, diethylaminomethyl, 2-diethylaminoethyl, 3-diethylaminopropyl, 4-diethylaminobutyl, 5-diethylaminopentyl, 6-diethylaminohexyl, dipropylaminomethyl, 2-dipropylaminoethyl, 3-dipropylaminopropyl, 4-dipropylaminobutyl, 5-dipropylaminopentyl, 6-dipropylaminohexyl, dibutylaminomethyl, 2-dibutylaminoethyl, 3-dibutylaminopropyl, 4-dibutylaminobutyl, 5-dibutylaminopentyl, 6-dibutylaminohexyl, diisopropylaminomethyl, 2-diisopropylaminoethyl, 3-diisopropylaminopropyl, 4-diisopropylaminobutyl, 5-diisopropylaminopentyl or 6-diisopropylaminohexyl group, etc.,

preferably a trifluoromethyl, 2,2,2-trifluoroethyl, 3,3,3-trifluoropropyl, 2-chloroethyl, hydroxymethyl, 1-hydroxyethyl, 2-hydroxyethyl, 1-hydroxypropyl, 3-hydroxypropyl, 1-hydroxybutyl, 4-hydroxybutyl, 1-hydroxypentyl, 5-hydroxypentyl, 1-hydroxyhexyl, 6-hydroxyhexyl, 1-hydroxy-2-methylpropyl, 2-hydroxy-2-methylpropyl, 1-hydroxy-3-methylbutyl, 3-hydroxy-3-methylbutyl, 1-hydroxy-4-methylpentyl, 4-hydroxy-4-methylpentyl, 2-ethyl-2-hydroxybutyl, cyanomethyl, 2-cyanoethyl, 3-cyanopropyl, 4-cyanobutyl, 5-cyanopentyl, 6-cyanohexyl, 2-cyano-2-methylpropyl, 3-cyano-3-methylbutyl, 4-cyano-4-methylpentyl, 2-cyano-2-ethylbutyl, carboxymethyl, 2-carboxyethyl, 3-carboxypropyl, 4-carboxybutyl, 5-carboxypentyl, 6-carboxyhexyl, 2-carboxy-2-methylpropyl, 3-carboxy-3-methylbutyl, 4-carboxy-4-methylpentyl, 2-carboxy-2-ethylbutyl, methoxymethyl, 2-methoxyethyl, 2-methoxypropyl, 3-methoxypropyl, 4-methoxybutyl, 5-methoxypentyl, 6-methoxyhexyl, 2-methoxy-2-methylpropyl, 3-methoxy-3-methylbutyl, 4-methoxy-4-methylpentyl, 2-ethyl-2-methoxybutyl, ethoxymethyl, 2-ethoxyethyl, 2-ethoxypropyl, 3-ethoxypropyl, 4-ethoxybutyl, 5-ethoxypentyl, 6-ethoxyhexyl, 2-ethoxy-2-methylpropyl, 3-ethoxy-3-methylbutyl, 4-ethoxy-4-methylpentyl, 2-ethoxy-2-ethylbutyl, propoxymethyl, 2-propoxyethyl, 3-propoxypropyl, 4-propoxybutyl, 5-propoxypentyl, 6-propoxyhexyl, 2-methyl-2-propoxypropyl, 3-methyl-3-propoxybutyl, 4-methyl-4-propoxypentyl, 2-ethyl-2-propoxybutyl, butoxymethyl, 2-butoxyethyl, 3-butoxypropyl, 4-butoxybutyl, 5-butoxypentyl, 6-butoxyhexyl, 2-butoxy-2-methylpropyl, 3-butoxy-3-methylbutyl, 4-butoxy-4-methylpentyl, 2-butoxy-2-ethylbutyl, isopropoxymethyl, 2-isopropoxyethyl, 3-isopropoxypropyl, 4-isopropoxybutyl, 5-isopropoxypentyl, 6-isopropoxyhexyl, 2-isopropoxy-2-methylpropyl, 3-isopropoxy-3-methylbutyl, 4-isopropoxy-4-methylpentyl, 2-ethyl-2-isopropoxybutyl, isobutoxymethyl, 2-isobutoxyethyl, sec-butoxymethyl, 2-(sec-butoxy)ethyl, tert-butoxymethyl, 2-(tert-butoxy)ethyl, 1-ethylpropoxymethyl, 2-(1-ethylpropoxy)ethyl,

2-fluoroethoxymethyl, 2-(2-fluoroethoxy)ethyl, 2-(2-fluoroethoxy)propyl, 3-(2-fluoroethoxy)propyl, 4-(2-fluoroethoxy)butyl, 5-(2-fluoroethoxy)pentyl, 6-(2-fluoroethoxy)hexyl, 2-(2-fluoroethoxy)-2-methylpropyl, 3-(2-fluoroethoxy)-3-methylbutyl, 4-(2-fluoroethoxy)-4-methylpentyl, 2-ethyl-2-(2-fluoroethoxy)butyl, (2,2,2-trifluoroethoxy)methyl, 2-(2,2,2-trifluoroethoxy)ethyl, 2-(2,2,2-trifluoroethoxy)propyl, 3-(2,2,2-trifluoroethoxy)propyl, 4-(2,2,2-trifluoroethoxy)butyl, 5-(2,2,2-trifluoroethoxy)pentyl, 6-(2,2,2-trifluoroethoxy)hexyl, 2-(2,2,2-trifluoroethoxy)-2-methylpropyl, 3-(2,2,2-trifluoroethoxy)-3-methylbutyl, 4-(2,2,2-trifluoroethoxy)-4-methylpentyl, 2-ethyl-2-(2,2,2-trifluoroethoxy)butyl, cyclopropoxymethyl, 2-cyclopropoxyethyl, 2-cyclopropoxypropyl, 3-cyclopropoxypropyl, 4-cyclopropoxybutyl, 5-cyclopropoxypentyl, 6-cyclopropoxyhexyl, 2-cyclopropoxy-2-methylpropyl, 3-cyclopropoxy-3-methylbutyl, 4-cyclopropoxy-4-methylpentyl, 2-cyclopropoxy-2-ethylbutyl, cyclobutoxymethyl, 2-cyclobutoxyethyl, 2-cyclobutoxypropyl, 3-cyclobutoxypropyl, 4-cyclobutoxybutyl, 5-cyclobutoxypentyl, 6-cyclobutoxyhexyl, 2-cyclobutoxy-2-methylpropyl, 3-cyclobutoxy-3-methylbutyl, 4-cyclobutoxy-4-methylpentyl, 2-cyclobutoxy-2-ethylbutyl, cyclopropylmethoxymethyl, 2-cyclopropylmethoxyethyl, 2-cyclopropylmethoxypropyl, 3-cyclopropylmethoxypropyl, 4-cyclopropylmethoxybutyl, 5-cyclopropylmethoxypentyl, 6-cyclopropylmethoxyhexyl, 2-cyclopropylmethoxy-2-methylpropyl, 3-cyclopropylmethoxy-3-methylbutyl, 4-cyclopropylmethoxy-4-methylpentyl, 2-cyclopropylmethoxy-2-ethylbutyl, cyclobutylmethoxymethyl, 2-cyclobutylmethoxyethyl, 2-cyclobutylmethoxypropyl, 3-cyclobutylmethoxypropyl, 4-cyclobutylmethoxybutyl, 5-cyclobutylmethoxypentyl, 6-cyclobutylmethoxyhexyl, 2-cyclobutylmethoxy-2-methylpropyl, 3-cyclobutylmethoxy-3-methylbutyl, 4-cyclobutylmethoxy-4-methylpentyl, 2-cyclobutylmethoxy-2-ethylbutyl, methoxycarbonylmethyl, 2-methoxycarbonylethyl, 3-methoxycarbonylpropyl, 4-methoxycarbonylbutyl, 5-methoxycarbonylpentyl, 6-methoxycarbonylhexyl, 2-methoxycarbonyl-2-methylpropyl, 3-methoxycarbonyl-3-methylbutyl, 4-methoxycarbonyl-4-methylpentyl, 2-ethyl-2-methoxycarbonylbutyl, ethoxycarbonylmethyl, 2-ethoxycarbonylethyl, 3-ethoxycarbonylpropyl, 4-ethoxycarbonylbutyl, 5-ethoxycarbonylpentyl, 6-ethoxycarbonylhexyl, 2-ethoxycarbonyl-2-methylpropyl, 3-ethoxycarbonyl-3-methylbutyl, 4-ethoxycarbonyl-4-methylpentyl, 2-ethoxycarbonyl-2-ethylbutyl, propoxycarbonylmethyl, 2-propoxycarbonylethyl, 3-propoxycarbonylpropyl, 4-propoxycarbonylbutyl, 5-propoxycarbonylpentyl, 6-propoxycarbonylhexyl, 2-methyl-2-propoxycarbonylpropyl, 3-methyl-3-propoxycarbonylbutyl, 4-methyl-4-propoxycarbonylpentyl, 2-ethyl-2-propoxycarbonylbutyl, butoxycarbonylmethyl, 2-butoxycarbonylethyl, 3-butoxycarbonylpropyl, 4-butoxycarbonylbutyl, 5-butoxycarbonylpentyl, 6-butoxycarbonylhexyl, 2-butoxycarbonyl-2-methylpropyl, 3-butoxycarbonyl-3-methylbutyl, 4-butoxycarbonyl-4-methylpentyl, 2-butoxycarbonyl-2-ethylbutyl, isopropoxycarbonylmethyl, 2-isopropoxycarbonylethyl, 3-isopropoxycarbonylpropyl, 4-isopropoxycarbonylbutyl, 5-isopropoxycarbonylpentyl, 6-isopropoxycarbonylhexyl, 2-isopropoxycarbonyl-2-methylpropyl, 3-isopropoxycarbonyl-3-methylbutyl, 4-isopropoxycarbonyl-4-methylpentyl, 2-ethyl-2-isopropoxycarbonylbutyl, isobutoxycarbonylmethyl, 2-isobutoxycarbonylethyl, 3-isobutoxycarbonylpropyl, 4-isobutoxycarbonylbutyl, 5-isobutoxycarbonylpentyl, 6-isobutoxycarbonylhexyl, 2-isobutoxycarbonyl-2-methylpropyl, 3-isobutoxycarbonyl-3-methylbutyl, 4-isobutoxycarbonyl-4-methylpentyl, 2-ethyl-2-isobutoxycarbonylbutyl,

acetyloxymethyl, 2-acetyloxyethyl, 3-acetyloxypropyl, 4-acetyloxybutyl, 5-acetyloxypentyl, 6-acetyloxyhexyl, 2-acetyloxy-2-methylpropyl, 3-acetyloxy-3-methylbutyl, 4-acetyloxy-4-methylpentyl, 2-acetyloxy-2-ethylbutyl, propionyloxymethyl, 2-propionyloxyethyl, 3-propionyloxypropyl, 4-propionyloxybutyl, 5-propionyloxypentyl, 6-propionyloxyhexyl, 2-methyl-2-propionyloxypropyl, 3-methyl-3-propionyloxybutyl, 4-methyl-4-propionyloxypentyl, 2-ethyl-2-propionyloxybutyl, butyryloxymethyl, 2-butyryloxyethyl, 3-butyryloxypropyl, 4-butyryloxybutyl, 5-butyryloxypentyl, 6-butyryloxyhexyl, 2-butyryloxy-2-methylpropyl, 3-butyryloxy-3-methylbutyl, 4-butyryloxy-4-methylpentyl, 2-butyryloxy-2-ethylbutyl, acetylmethyl, 2-acetylethyl, 3-acetylpropyl, 4-acetylbutyl, 5-acetylpentyl, 6-acetylhexyl, 2-acetyl-2-methylpropyl, 3-acetyl-3-methylbutyl, 4-acetyl-4-methylpentyl, 2-acetyl-2-ethylbutyl, propionylmethyl, 2-propionylethyl, 3-propionylpropyl, 4-propionylbutyl, 5-propionylpentyl, 6-propionylhexyl, 3-methyl-3-propionylbutyl, 4-methyl-4-propionylpentyl, 2-ethyl-2-propionylbutyl, butyrylmethyl, 2-butyrylethyl, 3-butyrylpropyl, 4-butyrylbutyl, 5-butyrylpentyl, 6-butyrylhexyl, 2-butyryl-2-methylpropyl, 3-butyryl-3-methylbutyl, 4-butyryl-4-methylpentyl, 2-butyryl-2-ethylbutyl, dimethylaminomethyl, 2-dimethylaminoethyl, 3-dimethylaminopropyl, 4-dimethylaminobutyl, diethylaminomethyl, 2-diethylaminoethyl, 3-diethylaminopropyl, 4-diethylaminobutyl, dipropylaminomethyl, 2-dipropylaminoethyl, 3-dipropylaminopropyl, 4-dipropylaminobutyl, dibutylaminomethyl, 2-dibutylaminoethyl, 3-dibutylaminopropyl, 4-dibutylaminobutyl, diisopropylaminomethyl, 2-diisopropylaminoethyl, 3-diisopropylaminopropyl or 4-diisopropylaminobutyl group,

more preferably 2,2,2-trifluoroethyl, 3,3,3-trifluoropropyl, 2-chloroethyl, hydroxymethyl, 2-hydroxyethyl, 3-hydroxypropyl, 4-hydroxybutyl, 5-hydroxypentyl, 6-hydroxyhexyl, 2-hydroxy-2-methylpropyl, 3-hydroxy-3-methylbutyl, 4-hydroxy-4-methylpentyl, 2-ethyl-2-hydroxybutyl, 2-cyano-2-methylpropyl, 3-cyano-3-methylbutyl, 4-cyano-4-methylpentyl, 2-cyano-2-ethylbutyl, 2-carboxy-2-methylpropyl, 3-carboxy-3-methylbutyl, 4-carboxy-4-methylpentyl, 2-carboxy-2-ethylbutyl, methoxymethyl, 2-methoxyethyl, 3-methoxypropyl, 4-methoxybutyl, 5-methoxypentyl, 6-methoxyhexyl, 2-methoxy-2-methylpropyl, 3-methoxy-3-methylbutyl, 4-methoxy-4-methylpentyl, 2-ethyl-2-methoxybutyl, ethoxymethyl, 2-ethoxyethyl, 3-ethoxypropyl, 4-ethoxybutyl, 5-ethoxypentyl, 6-ethoxyhexyl, 2-ethoxy-2-methylpropyl, 3-ethoxy-3-methylbutyl, 4-ethoxy-4-methylpentyl, 2-ethoxy-2-ethylbutyl, propoxymethyl, 2-propoxyethyl, 3-propoxypropyl, 4-propoxybutyl, 2-methyl-2-propoxypropyl, 3-methyl-3-propoxybutyl, 4-methyl-4-propoxypentyl, 2-ethyl-2-propoxybutyl, butoxymethyl, 2-butoxyethyl, 3-butoxypropyl, 4-butoxybutyl, 2-butoxy-2-methylpropyl, 3-butoxy-3-methylbutyl, 4-butoxy-4-methylpentyl, 2-butoxy-2-ethylbutyl, isopropoxymethyl, 2-isopropoxyethyl, 3-isopropoxypropyl, 4-isopropoxybutyl, isobutoxymethyl, sec-butoxymethyl, tert-butoxymethyl, 1-ethylpropoxymethyl, 2-fluoroethoxymethyl, 2-(2-fluoroethoxy)ethyl, 3-(2-fluoroethoxy)propyl, 4-(2-fluoroethoxy)butyl, 5-(2-fluoroethoxy)pentyl, 6-(2-fluoroethoxy)hexyl, 2-(2-fluoroethoxy)-2-methylpropyl, 3-(2-fluoroethoxy)-3-methylbutyl, 4-(2-fluoroethoxy)-4-methylpentyl, 2-ethyl-2-(2-fluoroethoxy)butyl, (2,2,2-trifluoroethoxy)methyl, cyclopropoxymethyl, cyclobutoxymethyl, 2-cyclobutoxyethyl, 3-cyclobutoxypropyl, 4-cyclobutoxybutyl, 5-cyclobutoxypentyl, 6-cyclobutoxyhexyl, 2-cyclobutoxy-2-methylpropyl, 3-cyclobutoxy-3-methylbutyl, 4-cyclobutoxy-4-methylpentyl, 2-cyclobutoxy-2-ethylbutyl, cyclopropylmethoxymethyl, 2-cyclopropylmethoxyethyl, 3-cyclopropylmethoxypropyl, 4-cyclopropylmethoxybutyl, 5-cyclopropylmethoxypentyl, 6-cyclopropylmethoxyhexyl, 2-cyclopropylmethoxy-2-methylpropyl, 3-cyclopropylmethoxy-3-methylbutyl, 4-cyclopropylmethoxy-4-methylpentyl, 2-cyclopropylmethoxy-2-ethylbutyl, cyclobutylmethoxymethyl,

methoxycarbonylmethyl, 2-methoxycarbonylethyl, 3-methoxycarbonylpropyl, 4-methoxycarbonylbutyl, 2-methoxycarbonyl-2-methylpropyl, 3-methoxycarbonyl-3-methylbutyl, 4-methoxycarbonyl-4-methylpentyl, 2-ethyl-2-methoxycarbonylbutyl, ethoxycarbonylmethyl, 2-ethoxycarbonylethyl, 3-ethoxycarbonylpropyl, 4-ethoxycarbonylbutyl, 2-ethoxycarbonyl-2-methylpropyl, 3-ethoxycarbonyl-3-methylbutyl, 4-ethoxycarbonyl-4-methylpentyl, 2-ethoxycarbonyl-2-ethylbutyl, propoxycarbonylmethyl, 2-propoxycarbonylethyl, 3-propoxycarbonylpropyl, 4-propoxycarbonylbutyl, 2-methyl-2-propoxycarbonylpropyl, 3-methyl-3-propoxycarbonylbutyl, 4-methyl-4-propoxycarbonylpentyl, 2-ethyl-2-propoxycarbonylbutyl, butoxycarbonylmethyl, 2-butoxycarbonylethyl, 3-butoxycarbonylpropyl, 4-butoxycarbonylbutyl, 2-butoxycarbonyl-2-methylpropyl, 3-butoxycarbonyl-3-methylbutyl, 4-butoxycarbonyl-4-methylpentyl, 2-butoxycarbonyl-2-ethylbutyl, isopropoxycarbonylmethyl, 2-isopropoxycarbonylethyl, 3-isopropoxycarbonylpropyl, 4-isopropoxycarbonylbutyl, 2-isopropoxycarbonyl-2-methylpropyl, 3-isopropoxycarbonyl-3-methylbutyl, 4-isopropoxycarbonyl-4-methylpentyl, 2-ethyl-2-isopropoxycarbonylbutyl, isobutoxycarbonylmethyl, 2-isobutoxycarbonylethyl, 3-isobutoxycarbonylpropyl, 4-isobutoxycarbonylbutyl, acetyloxymethyl, 2-acetyloxyethyl, 3-acetyloxypropyl, 4-acetyloxybutyl, 5-acetyloxypentyl, 6-acetyloxyhexyl, 2-acetyloxy-2-methylpropyl, 3-acetyloxy-3-methylbutyl, 4-acetyloxy-4-methylpentyl, 2-acetyloxy-2-ethylbutyl, propionyloxymethyl, 2-propionyloxyethyl, 3-propionyloxypropyl, 4-propionyloxybutyl, 5-propionyloxypentyl, acetylmethyl, 2-acetylethyl, 3-acetylpropyl, 4-acetylbutyl, 5-acetylpentyl, 6-acetylhexyl, 2-acetyl-2-methylpropyl, 3-acetyl-3-methylbutyl, 4-acetyl-4-methylpentyl, 2-acetyl-2-ethylbutyl, propionylmethyl, 2-propionylethyl, 3-propionylpropyl, 4-propionylbutyl, 5-propionylpentyl, dimethylaminomethyl, 2-dimethylaminoethyl, diethylaminomethyl, 2-diethylaminoethyl, dipropylaminomethyl, 2-dipropylaminoethyl, 2-dibutylaminoethyl, 3-dibutylaminopropyl, diisopropylaminomethyl or 2-diisopropylaminoethyl group,

particularly preferably 2,2,2-trifluoroethyl, 3,3,3-trifluoropropyl, 2-chloroethyl, hydroxymethyl, 2-hydroxy-2-methylpropyl, 3-hydroxy-3-methylbutyl, 4-hydroxy-4-methylpentyl, 2-ethyl-2-hydroxybutyl, 2-cyano-2-methylpropyl, 3-cyano-3-methylbutyl, 2-carboxy-2-methylpropyl, 3-carboxy-3-methylbutyl, 4-carboxy-4-methylpentyl, methoxymethyl, 2-methoxyethyl, ethoxymethyl, 2-ethoxyethyl, isopropoxymethyl, 2-isopropoxyethyl, isobutoxymethyl, sec-butoxymethyl, tert-butoxymethyl, 1-ethylpropoxymethyl, 2-fluoroethoxymethyl, cyclobutoxymethyl, cyclopropylmethoxymethyl or dimethylamino group.

The “C 3 -C 6 cycloalkyl group” of the C 3 -C 6 cycloalkyl group which may be substituted by a substituent(s) selected from Substituent group (b) and the “C 3 -C 6 cycloalkyl group” of the C 1 -C 3 alkyl group which is substituted by a C 3 -C 6 cycloalkyl group which may be substituted by a substituent(s) selected from Substituent group (b), and may be substituted by a hydroxy group of R 4 each mean a “C 3 -C 6 cycloalkyl group” having the same meaning, and such a “C 3 -C 6 cycloalkyl group” may be mentioned, for example, a cyclopropyl, cyclobutyl, cyclopentyl or cyclohexyl group.

As Substituent group (b), there may be mentioned, for example, a hydroxy group, a fluorine, chlorine, bromine or iodine atom, preferably a hydroxy group, a fluorine, chlorine or bromine atom, more preferably a hydroxy group, a fluorine or chlorine atom.

A number of substituents of the C 3 -C 6 cycloalkyl group substituted by these substituent(s) selected from Substituent group (b) is, for example, 1 to 5, preferably 1 to 3, and the substituents in the case of a plural numer may be the same or different from each other.

As the C 3 -C 6 cycloalkyl group which may be substituted by a substituent(s) selected from Substituent group (b), there may be mentioned, for example, a cyclopropyl, 1-hydroxycyclopropyl, cyclobutyl, 1-hydroxycyclobutyl, cyclopentyl, 3,3-difluoro-1-hydroxycyclopentyl, cyclohexyl, 3,3-difluoro-1-hydroxycyclohexyl or 4,4-difluoro-1-hydroxycyclohexyl group, etc., preferably a cyclopropyl, 1-hydroxycyclopropyl, cyclobutyl or 1-hydroxycyclobutyl group.

As the “C 1 -C 3 alkyl group portion” of the “C 1 -C 3 alkyl group which is substituted by a C 3 -C 6 cycloalkyl group which may be substituted by a substituent(s) selected from Substituent group (b), and may be substituted by a hydroxy group” of R 4 , there may be mentioned, for example, a straight or branched C 1 -C 3 alkyl group such as a methyl, ethyl, propyl and isopropyl group, preferably a methyl, ethyl or propyl group.

As the “C 1 -C 3 alkyl group which is substituted by a C 3 -C 6 cycloalkyl group which may be substituted by a substituent(s) selected from Substituent group (b), and may be substituted by a hydroxy group” of R 4 , there may be mentioned, for example, a cyclopropylmethyl, (1-hydroxycyclopropyl)methyl, cyclobutylmethyl, (1-hydroxycyclobutyl)methyl, cyclopentylmethyl, (3,3-difluoro-1-hydroxycyclopentyl)methyl, cyclohexylmethyl, (3,3-difluoro-1-hydroxycyclohexyl)methyl, (4,4-difluoro-1-hydroxycyclohexyl)methyl, cyclopropylhydroxymethyl, hydroxy(1-hydroxycyclopropyl)methyl, cyclobutylhydroxymethyl, hydroxy(1-hydroxycyclobutyl)methyl, cyclopentylhydroxymethyl, (3,3-difluoro-1-hydroxycyclopentyl)hydroxymethyl, cyclohexylhydroxymethyl, (3,3-difluoro-1-hydroxycyclohexyl)hydroxymethyl, (4,4-difluoro-1-hydroxycyclohexyl)hydroxymethyl, 1-cyclopropylethyl, 2-cyclopropylethyl, 1-(1-hydroxycyclopropyl)ethyl, 2-(1-hydroxycyclopropyl)ethyl, 1-cyclobutylethyl, 2-cyclobutylethyl, 1-(1-hydroxycyclobutyl)ethyl, 2-(1-hydroxycyclobutyl)ethyl, 1-cyclopentylethyl, 2-cyclopentylethyl, 1-(3,3-difluoro-1-hydroxycyclopentyl)ethyl, 2-(3,3-difluoro-1-hydroxycyclopentyl)ethyl, 1-cyclohexylethyl, 2-cyclohexylethyl, 1-(3,3-difluoro-1-hydroxycyclohexyl)ethyl, 2-(3,3-difluoro-1-hydroxycyclohexyl)ethyl, 1-(4,4-difluoro-1-hydroxycyclohexyl)ethyl, 2-(4,4-difluoro-1-hydroxycyclohexyl)ethyl,

1-cyclopropylpropyl, 3-cyclopropylpropyl, 1-(1-hydroxycyclopropyl)propyl, 3-(1-hydroxycyclopropyl)propyl, 1-cyclobutylpropyl, 3-cyclobutylpropyl, 1-(1-hydroxycyclobutyl)propyl, 3-(1-hydroxycyclobutyl)propyl, 1-cyclopentylpropyl, 3-cyclopentylpropyl, 1-(3,3-difluoro-1-hydroxycyclopentyl)propyl, 3-(3,3-difluoro-1-hydroxycyclopentyl)propyl, 1-cyclohexylpropyl, 3-cyclohexylpropyl, 1-(3,3-difluoro-1-hydroxycyclohexyl)propyl, 3-(3,3-difluoro-1-hydroxycyclohexyl)propyl, 1-(4,4-difluoro-1-hydroxycyclohexyl)propyl, 3-(4,4-difluoro-1-hydroxycyclohexyl)propyl, 1-cyclopropyl-1-hydroxyethyl, 2-cyclopropyl-2-hydroxyethyl, 1-hydroxy-1-(1-hydroxycyclopropyl)ethyl, 2-hydroxy-2-(1-hydroxycyclopropyl)ethyl, 1-cyclobutyl-1-hydroxyethyl, 2-cyclobutyl-2-hydroxyethyl, 1-hydroxy-1-(1-hydroxycyclobutyl)ethyl, 2-hydroxy-2-(1-hydroxycyclobutyl)ethyl, 1-cyclopentyl-1-hydroxyethyl, 2-cyclopentyl-2-hydroxyethyl, 1-(3,3-difluoro-1-hydroxycyclopentyl)-1-hydroxyethyl, 2-(3,3-difluoro-1-hydroxycyclopentyl)-2-hydroxyethyl, 1-cyclohexyl-1-hydroxyethyl, 2-cyclohexyl-2-hydroxyethyl, 1-(3,3-difluoro-1-hydroxycyclohexyl)-1-hydroxyethyl, 2-(3,3-difluoro-1-hydroxycyclohexyl)-2-hydroxyethyl, 1-(4,4-difluoro-1-hydroxycyclohexyl)-1-hydroxyethyl, 2-(4,4-difluoro-1-hydroxycyclohexyl)-2-hydroxyethyl,

1-cyclopropyl-1-hydroxypropyl, 3-cyclopropyl-3-hydroxypropyl, 1-hydroxy-1-(1-hydroxycyclopropyl)propyl, 3-hydroxy-3-(1-hydroxycyclopropyl)propyl, 1-cyclobutyl-1-hydroxypropyl, 3-cyclobutyl-3-hydroxypropyl, 1-hydroxy-1-(1-hydroxycyclobutyl)propyl, 3-hydroxy-3-(1-hydroxycyclobutyl)propyl, 1-cyclopentyl-1-hydroxypropyl, 3-cyclopentyl-3-hydroxypropyl, 1-(3,3-difluoro-1-hydroxycyclopentyl)-1-hydroxypropyl, 3-(3,3-difluoro-1-hydroxycyclopentyl)-3-hydroxypropyl, 1-cyclohexyl-1-hydroxypropyl, 3-cyclohexyl-3-hydroxypropyl, 1-(3,3-difluoro-1-hydroxycyclohexyl)-1-hydroxypropyl, 3-(3,3-difluoro-1-hydroxycyclohexyl)-3-hydroxypropyl, 1-(4,4-difluoro-1-hydroxycyclohexyl)-1-hydroxypropyl, 3-(4,4-difluoro-1-hydroxycyclohexyl)-3-hydroxypropyl, 1-cyclopropyl-1-methylethyl, 2-cyclopropyl-1-methylethyl, 1-cyclobutyl-1-methylethyl, 2-cyclobutyl-1-methylethyl, 1-(1-hydroxycyclopropyl)-1-methylethyl or 2-cyclopropyl-2-hydroxy-1-methylethyl group, etc.,

preferably a cyclopropylmethyl, (1-hydroxycyclopropyl)methyl, cyclobutylmethyl, (1-hydroxycyclobutyl)methyl, cyclopropylhydroxymethyl, hydroxy(1-hydroxycyclopropyl)methyl, cyclobutylhydroxymethyl, hydroxy(1-hydroxycyclobutyl)methyl, 2-cyclopropylethyl, 2-(1-hydroxycyclopropyl)ethyl, 2-cyclobutylethyl, 2-(1-hydroxycyclobutyl)ethyl, 3-cyclopropylpropyl, 3-(1-hydroxycyclopropyl)propyl, 3-cyclobutylpropyl, 3-(1-hydroxycyclobutyl)propyl, 2-cyclopropyl-2-hydroxyethyl, 2-hydroxy-2-(1-hydroxycyclopropyl)ethyl, 2-cyclobutyl-2-hydroxyethyl, 2-hydroxy-2-(1-hydroxycyclobutyl)ethyl, 3-cyclopropyl-3-hydroxypropyl, 3-hydroxy-3-(1-hydroxycyclopropyl)propyl, 3-cyclobutyl-3-hydroxypropyl or 3-hydroxy-3-(1-hydroxycyclobutyl)propyl group, more preferably cyclopropylmethyl, (1-hydroxycyclopropyl)methyl, cyclobutylmethyl, (1-hydroxycyclobutyl)methyl, cyclopropylhydroxymethyl, hydroxy(1-hydroxycyclopropyl)methyl, cyclobutylhydroxymethyl, hydroxy(1-hydroxycyclobutyl)methyl, 2-cyclopropylethyl, 2-(1-hydroxycyclopropyl)ethyl, 2-cyclobutylethyl or 2-(1-hydroxycyclobutyl)ethyl group.

As the “C 2 -C 6 alkenyl group” of R 4 , there may be mentioned, for example, a straight or branched C 2 -C 6 alkenyl group such as vinyl, 1-propenyl, 2-propenyl, 1-butenyl, 2-butenyl, 3-butenyl, 1-pentenyl, 2-pentenyl, 3-pentenyl, 4-pentenyl, 1-hexenyl, 2-hexenyl, 3-hexenyl, 4-hexenyl, 5-hexenyl, 1-methyl-1-propenyl, 2-methyl-1-propenyl, 1-methyl-2-propenyl, 2-methyl-2-propenyl, 1-methyl-1-butenyl, 2-methyl-1-butenyl, 3-methyl-1-butenyl, 1-methyl-2-butenyl, 2-methyl-2-butenyl, 3-methyl-2-butenyl, 1-methyl-3-butenyl, 2-methyl-3-butenyl, 3-methyl-3-butenyl, 1-methyl-1-pentenyl, 2-methyl-1-pentenyl, 3-methyl-1-pentenyl, 4-methyl-1-pentenyl, 1-methyl-2-pentenyl, 2-methyl-2-pentenyl, 3-methyl-2-pentenyl, 4-methyl-2-pentenyl, 1-methyl-3-pentenyl, 2-methyl-3-pentenyl, 3-methyl-3-pentenyl, 4-methyl-3-pentenyl, 1-methyl-4-pentenyl, 2-methyl-4-pentenyl, 3-methyl-4-pentenyl, 4-methyl-4-pentenyl and 2,3-dimethyl-2-butenyl group, etc., preferably 2-propenyl, 2-butenyl, 3-butenyl, 2-pentenyl, 3-pentenyl, 4-pentenyl, 2-hexenyl, 3-hexenyl, 4-hexenyl, 5-hexenyl, 2-methyl-2-propenyl, 2-methyl-2-butenyl, 3-methyl-2-butenyl, 2-methyl-3-butenyl, 3-methyl-3-butenyl, 2-methyl-2-pentenyl, 3-methyl-2-pentenyl, 4-methyl-2-pentenyl, 2-methyl-3-pentenyl, 3-methyl-3-pentenyl, 4-methyl-3-pentenyl, 2-methyl-4-pentenyl, 3-methyl-4-pentenyl, 4-methyl-4-pentenyl or 2,3-dimethyl-2-butenyl group, more preferably 2-propenyl, 2-butenyl, 2-pentenyl, 2-hexenyl, 2-methyl-2-propenyl, 2-methyl-2-butenyl, 3-methyl-2-butenyl, 2-methyl-2-pentenyl, 3-methyl-2-pentenyl, 4-methyl-2-pentenyl or 2,3-dimethyl-2-butenyl group, particularly preferably 2-propenyl, 2-butenyl, 2-methyl-2-propenyl, 2-methyl-2-butenyl, 3-methyl-2-butenyl and 2,3-dimethyl-2-butenyl group.

As the “C 2 -C 6 alkynyl group” of R 4 , there may be mentioned, for example, a straight or branched C 2 -C 6 alkynyl group such as an ethynyl, 1-propynyl, 2-propynyl, 1-butynyl, 2-butynyl, 3-butynyl, 1-methyl-2-propynyl, 1-pentynyl, 2-pentynyl, 3-pentynyl, 4-pentynyl, 3-methyl-1-butynyl, 1-methyl-2-butynyl, 1-methyl-3-butynyl, 2-methyl-3-butynyl, 1-hexynyl, 2-hexynyl, 3-hexynyl, 4-hexynyl, 5-hexynyl, 3-methyl-1-hexynyl, 4-methyl-1-pentynyl, 1-methyl-2-pentynyl, 4-methyl-2-pentynyl, 1-methyl-3-pentynyl, 2-methyl-3-pentynyl, 1-methyl-4-pentynyl, 2-methyl-4-pentynyl, 3-methyl-4-pentynyl and 2,2-dimethyl-3-butynyl group, etc., preferably an ethynyl, 2-propynyl, 2-butynyl, 3-butynyl, 2-pentynyl, 3-pentynyl, 4-pentynyl, 2-methyl-3-butynyl, 2-hexynyl, 3-hexynyl, 4-hexynyl, 5-hexynyl, 4-methyl-2-pentynyl, 2-methyl-3-pentynyl, 2-methyl-4-pentynyl, 3-methyl-4-pentynyl or 2,2-dimethyl-3-butynyl group, more preferably an ethynyl, 2-propynyl, 2-butynyl, 2-pentynyl, 2-hexynyl or 4-methyl-2-pentynyl group, particularly preferably an ethynyl, 2-propynyl, 2-butynyl and 4-methyl-2-pentynyl group.

The “hydroxy C 3 -C 5 alkenyl group” of R 4 means a C 3 -C 6 alkenyl group in which a hydroxy group is substituted on a carbon which is other carbon atoms than those constituting a double bond, and there may be mentioned, for example, a 3-hydroxy-1-propenyl, 1-hydroxy-2-propenyl, 3-hydroxy-1-butenyl, 4-hydroxy-1-butenyl, 1-hydroxy-2-butenyl, 4-hydroxy-2-butenyl, 1-hydroxy-3-butenyl, 2-hydroxy-3-butenyl, 3-hydroxy-1-pentenyl, 1-hydroxy-2-pentenyl, 2-hydroxy-3-pentenyl, 3-hydroxy-4-pentenyl, 3-hydroxy-1-hexenyl, 1-hydroxy-2-hexenyl, 2-hydroxy-3-hexenyl, 3-hydroxy-4-hexenyl or 4-hydroxy-5-hexenyl group, etc., preferably a 1-hydroxy-2-propenyl, 1-hydroxy-2-butenyl, 2-hydroxy-3-butenyl, 1-hydroxy-2-pentenyl, 2-hydroxy-3-pentenyl, 3-hydroxy-4-pentenyl, 1-hydroxy-2-hexenyl, 2-hydroxy-3-hexenyl, 3-hydroxy-4-hexenyl or 4-hydroxy-5-hexenyl group, more preferably a 1-hydroxy-2-propenyl, 1-hydroxy-2-butenyl, 1-hydroxy-2-pentenyl or 1-hydroxy-2-hexenyl group, particularly preferably a 1-hydroxy-2-propenyl or 1-hydroxy-2-butenyl group.

The “hydroxy C 3 -C 6 alkynyl group” of R 4 means a C 3 -C 6 alkynyl group in which a hydroxy group is substituted on a carbon which is other carbon atoms than those constituting a triple bond, and there may be mentioned, for example, a 3-hydroxy-1-propynyl, 1-hydroxy-2-propynyl, 3-hydroxy-1-butynyl, 4-hydroxy-1-butynyl, 1-hydroxy-2-butynyl, 4-hydroxy-2-butynyl, 1-hydroxy-3-butynyl, 2-hydroxy-3-butynyl, 3-hydroxy-1-pentynyl, 1-hydroxy-2-pentynyl, 2-hydroxy-3-pentynyl, 3-hydroxy-4-pentynyl, 3-hydroxy-1-hexynyl, 1-hydroxy-2-hexynyl, 2-hydroxy-3-hexynyl, 3-hydroxy-4-hexynyl or 4-hydroxy-5-hexynyl group, etc., preferably a 1-hydroxy-2-propynyl, 1-hydroxy-2-butynyl, 2-hydroxy-3-butynyl, 1-hydroxy-2-pentynyl, 2-hydroxy-3-pentynyl, 3-hydroxy-4-pentynyl, 1-hydroxy-2-hexynyl, 2-hydroxy-3-hexynyl, 3-hydroxy-4-hexynyl or 4-hydroxy-5-hexynyl group, more preferably a 1-hydroxy-2-propynyl, 1-hydroxy-2-butynyl, 1-hydroxy-2-pentynyl or 1-hydroxy-2-hexynyl group, particularly preferably a 1-hydroxy-2-propynyl or 1-hydroxy-2-butynyl group.

The “aromatic ring group or heteroaromatic ring group” of the aromatic ring group or heteroaromatic ring group which may be substituted by a substituent(s) selected from Substituent group (c) of R 4 , there may be mentioned, for example, a phenyl, naphthyl, thienyl, oxazolyl, isoxazolyl, thiazolyl, isothiazolyl, imidazolyl, pyrazolyl, pyridyl, pyridazinyl, pyrimidinyl or pyrazinyl group, etc., preferably a phenyl, thienyl, thiazolyl, pyrazolyl, pyridyl, pyridazinyl or pyrimidinyl group, more preferably a phenyl, thienyl, thiazolyl, pyrazolyl or pyridyl group.

A number of substituent(s) of the C 1 -C 4 alkyl group substituted by a substituent(s) selected from (a halogen atom, a hydroxy group or a carboxy group) in the “C 1 -C 4 alkyl group which may be substituted by a substituent(s) selected from the group consisting of (a halogen atom, a hydroxy group and a carboxy group)” of Substituent group (c) is, for example, 1 to 9, preferably 1 to 6, more preferably 1 to 3, and the substituents in the case of a plural number may be the same or different from each other.

As the “C 1 -C 4 alkyl group portion” in the C 1 -C 4 alkyl group which may be substituted by a substituent(s) selected from the group consisting of (a halogen atom, a hydroxy group and a carboxy group) of Substituent group (c), there may be mentioned, for example, a methyl, ethyl, propyl, isopropyl, butyl, isobutyl, sec-butyl or tert-butyl group, preferably a methyl, ethyl, propyl or isopropyl group.

As the “C 1 -C 4 alkyl group which may be substituted by a substituent(s) selected from the group consisting of (a halogen atom, a hydroxy group and a carboxy group)” of Substituent group (c), there may be mentioned, for example, a trifluoromethyl, 2,2,2-trifluoroethyl, 3,3,3-trifluoropropyl, 2-chloroethyl, 2,2-dichloroethyl, 2,2,2-trichloroethyl, hydroxymethyl, 1-hydroxyethyl, 2-hydroxyethyl, 1-hydroxypropyl, 2-hydroxypropyl, 3-hydroxypropyl, 2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl, 1-hydroxy-1-methylethyl, 1-hydroxybutyl, 2-hydroxybutyl, 3-hydroxybutyl, 4-hydroxybutyl, 1-hydroxy-2-methylpropyl, 2-hydroxy-2-methylpropyl, carboxymethyl, 1-carboxyethyl, 2-carboxyethyl, 1-carboxypropyl, 2-carboxypropyl, 3-carboxypropyl, 1-carboxybutyl, 2-carboxybutyl, 3-carboxybutyl, 4-carboxybutyl, 1-carboxy-2-methylpropyl or 2-carboxy-2-methylpropyl group, etc., preferably a trifluoromethyl, 2,2,2-trifluoroethyl, 2-chloroethyl, 2,2-dichloroethyl, hydroxymethyl, 2-hydroxyethyl, 2-hydroxypropyl, 3-hydroxypropyl, 2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl, 1-hydroxy-1-methylethyl, 2-hydroxybutyl, 3-hydroxybutyl, 4-hydroxybutyl, 1-hydroxy-2-methylpropyl, 2-hydroxy-2-methylpropyl, carboxymethyl, 2-carboxyethyl, 2-carboxypropyl, 3-carboxypropyl, 2-carboxybutyl, 3-carboxybutyl, 4-carboxybutyl or 2-carboxy-2-methylpropyl group, more preferably a trifluoromethyl, 2,2,2-trifluoroethyl, hydroxymethyl, 2-hydroxyethyl, 3-hydroxypropyl, 2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl, 1-hydroxy-1-methylethyl, 3-hydroxybutyl, 4-hydroxybutyl, 1-hydroxy-2-methylpropyl, 2-hydroxy-2-methylpropyl, carboxymethyl, 2-carboxyethyl, 3-carboxypropyl, 3-carboxybutyl, 4-carboxybutyl or 2-carboxy-2-methylpropyl group.

A number of the substituent(s) of the aromatic ring group or heteroaromatic ring group each of which is substituted by a substituent(s) selected from Substituent group (c) is, for example, 1 to 4, preferably 1 to 3, and the substituents in a plural number may be the same or different from each other.

As the “aromatic ring group or heteroaromatic ring group which may be substituted by a substituent(s) selected from Substituent group (c)” of R 4 , there may be mentioned, for example, a phenyl, 2-fluorophenyl, 3-fluorophenyl, 4-fluorophenyl, 2,4-difluorophenyl, 2,6-difluorophenyl, 3,4-difluorophenyl, 2,4,6-trifluorophenyl, 2-chlorophenyl, 3-chlorophenyl, 4-chlorophenyl, 2,4-dichlorophenyl, 2,6-dichlorophenyl, 3,4-dichlorophenyl, 2,4,6-trichlorophenyl, 2-hydroxyphenyl, 3-hydroxyphenyl, 4-hydroxyphenyl, 2,6-dihydroxyphenyl, 2,4-dihydroxyphenyl, 3,4-dihydroxyphenyl, 2,4,6-trihydroxyphenyl, 3,4,5-trihydroxyphenyl, 2-cyanophenyl, 3-cyanophenyl, 4-cyanophenyl, 2-nitrophenyl, 3-nitrophenyl, 4-nitrophenyl, 2-carboxyphenyl, 3-carboxyphenyl, 4-carboxyphenyl, 2-methylphenyl, 3-methylphenyl, 4-methylphenyl, 2,6-dimethylphenyl, 2,4-dimethylphenyl, 3,4-dimethylphenyl, 2,4,6-trimethylphenyl, 2-trifluoromethylphenyl, 3-trifluoromethylphenyl, 4-trifluoromethylphenyl, 3-ethylphenyl, 4-ethylphenyl, 3-propylphenyl, 4-propylphenyl, 3-isopropylphenyl, 4-isopropylphenyl, 3-butylphenyl, 4-butylphenyl, 3-isobutylphenyl, 4-isobutylphenyl, 3-(1-hydroxy-1-methylethyl)phenyl, 4-(1-hydroxy-1-methylethyl)phenyl, 3-(2,2,2-trifluoro-1-hydroxy-1-ethyl)phenyl, 4-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)phenyl, 3-(1-carboxy-1-methylethyl)phenyl, 4-(1-carboxy-1-methylethyl)phenyl, 2-methoxyphenyl, 3-methoxyphenyl, 4-methoxyphenyl, 2,6-dimethoxyphenyl, 2,4-dimethoxyphenyl, 3,4-dimethoxyphenyl, 2,4,6-trimethoxyphenyl, 3,4,5-trimethoxyphenyl,

2-ethoxyphenyl, 3-ethoxyphenyl, 4-ethoxyphenyl, 2,6-diethoxyphenyl, 2,4-diethoxyphenyl, 3,4-diethoxyphenyl, 2-propoxyphenyl, 3-propoxyphenyl, 4-propoxyphenyl, 2-butoxyphenyl, 3-butoxyphenyl, 4-butoxyphenyl, 2-isopropoxyphenyl, 3-isopropoxyphenyl, 4-isopropoxyphenyl, 2-methoxycarbonylphenyl, 3-methoxycarbonylphenyl, 4-methoxycarbonylphenyl, 2,6-dimethoxycarbonylphenyl, 2,4-dimethoxycarbonylphenyl, 3,4-dimethoxycarbonylphenyl, 2,4,6-trimethoxycarbonylphenyl, 3,4,5-trimethoxycarbonylphenyl, 2-ethoxycarbonylphenyl, 3-ethoxycarbonylphenyl, 4-ethoxycarbonylphenyl, 2,6-diethoxycarbonylphenyl, 2,4-diethoxycarbonylphenyl, 3,4-diethoxycarbonylphenyl, 2-propoxycarbonylphenyl, 3-propoxycarbonylphenyl, 4-propoxycarbonylphenyl, 2-butoxycarbonylphenyl, 3-butoxycarbonylphenyl, 4-butoxycarbonylphenyl, 2-isopropoxycarbonylphenyl, 3-isopropoxycarbonylphenyl, 4-isopropoxycarbonylphenyl, 3-acetoxyphenyl, 4-acetoxyphenyl, 3-propionyloxyphenyl, 4-propionyloxyphenyl, 3-butyryloxyphenyl, 4-butyryloxyphenyl, 3-dimethylaminophenyl, 4-dimethylaminophenyl, 3-diethylaminophenyl, 4-diethylaminophenyl, 3-dipropylaminophenyl, 4-dipropylaminophenyl, 3-dibutylaminophenyl, 4-dibutylaminophenyl, 3-diisopropylaminophenyl, 4-diisopropylaminophenyl, 1-naphthyl, 2-naphthyl,

2-thienyl, 3-cyano-2-thienyl, 4-cyano-2-thienyl, 5-cyano-2-thienyl, 3-carboxy-2-thienyl, 4-carboxy-2-thienyl, 5-carboxy-2-thienyl, 3-methyl-2-thienyl, 4-methyl-2-thienyl, 5-methyl-2-thienyl, 3-trifluoromethyl-2-thienyl, 4-trifluoromethyl-2-thienyl, 5-trifluoromethyl-2-thienyl, 3,4-dimethyl-2-thienyl, 3,5-dimethyl-2-thienyl, 4,5-dimethyl-2-thienyl, 4-ethyl-2-thienyl, 5-ethyl-2-thienyl, 4-propyl-2-thienyl, 5-propyl-2-thienyl, 4-isopropyl-2-thienyl, 5-isopropyl-2-thienyl, 4-butyl-2-thienyl, 5-butyl-2-thienyl, 4-isobutyl-2-thienyl, 5-isobutyl-2-thienyl, 4-(1-hydroxy-1-methylethyl)-2-thienyl, 5-(1-hydroxy-1-methylethyl)-2-thienyl, 4-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-2-thienyl, 5-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-2-thienyl, 4-(1-carboxy-1-methylethyl)-2-thienyl, 5-(1-carboxy-1-methylethyl)-2-thienyl, 3-methoxycarbonyl-2-thienyl, 4-methoxycarbonyl-2-thienyl, 5-methoxycarbonyl-2-thienyl, 3-ethoxycarbonyl-2-thienyl, 4-ethoxycarbonyl-2-thienyl, 5-ethoxycarbonyl-2-thienyl, 3-propoxycarbonyl-2-thienyl, 4-propoxycarbonyl-2-thienyl, 5-propoxycarbonyl-2-thienyl, 3-butoxycarbonyl-2-thienyl, 4-butoxycarbonyl-2-thienyl, 5-butoxycarbonyl-2-thienyl, 3-isopropoxycarbonyl-2-thienyl, 4-isopropoxycarbonyl-2-thienyl, 5-isopropoxycarbonyl-2-thienyl,

3-thienyl, 2-cyano-3-thienyl, 4-cyano-3-thienyl, 5-cyano-3-thienyl, 2-carboxy-3-thienyl, 4-carboxy-3-thienyl, 5-carboxy-3-thienyl, 2-methyl-3-thienyl, 4-methyl-3-thienyl, 5-methyl-3-thienyl, 2-trifluoromethyl-3-thienyl, 4-trifluoromethyl-3-thienyl, 5-trifluoromethyl-3-thienyl, 2,4-dimethyl-3-thienyl, 2,5-dimethyl-3-thienyl, 4,5-dimethyl-3-thienyl, 5-ethyl-3-thienyl, 5-propyl-3-thienyl, 5-isopropyl-3-thienyl, 5-butyl-3-thienyl, 5-isobutyl-3-thienyl, 5-(1-hydroxy-1-methylethyl)-3-thienyl, 5-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-3-thienyl, 5-(1-carboxy-1-methylethyl)-3-thienyl, 5-methoxycarbonyl-3-thienyl, 5-ethoxycarbonyl-3-thienyl, 5-propoxycarbonyl-3-thienyl, 5-butoxycarbonyl-3-thienyl, 5-isopropoxycarbonyl-3-thienyl, 4-oxazolyl, 5-oxazolyl, 4-isoxazolyl, 5-isoxazolyl, 4-thiazolyl, 2-cyano-4-thiazolyl, 2-carboxy-4-thiazolyl, 2-methyl-4-thiazolyl, 2-ethyl-4-thiazolyl, 2-propyl-4-thiazolyl, 2-isopropyl-4-thiazolyl, 2-trifluoromethyl-4-thiazolyl, 2-(1-hydroxy-1-methylethyl)-4-thiazolyl, 2-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-4-thiazolyl, 2-(1-carboxy-1-methylethyl)-4-thiazolyl, 2-methoxycarbonyl-4-thiazolyl, 2-ethoxycarbonyl-4-thiazolyl, 2-propoxycarbonyl-4-thiazolyl, 2-isopropoxycarbonyl-4-thiazolyl, 5-thiazolyl, 2-cyano-5-thiazolyl, 2-carboxy-5-thiazolyl, 2-methyl-5-thiazolyl, 2-ethyl-5-thiazolyl, 2-propyl-5-thiazolyl, 2-isopropyl-5-thiazolyl, 2-trifluoromethyl-5-thiazolyl, 2-(1-hydroxy-1-methylethyl)-5-thiazolyl, 2-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-5-thiazolyl, 2-(1-carboxy-1-methylethyl)-5-thiazolyl, 2-methoxycarbonyl-5-thiazolyl, 2-ethoxycarbonyl-5-thiazolyl, 2-propoxycarbonyl-5-thiazolyl, 2-isopropoxycarbonyl-5-thiazolyl, 4-isothiazolyl, 5-isothiazolyl, 2-imidazolyl, 4-imidazolyl, 4-pyrazolyl, 1-methyl-4-pyrazolyl, 1-ethyl-4-pyrazolyl, 1-propyl-4-pyrazolyl, 1-isopropyl-4-pyrazolyl, 1-butyl-4-pyrazolyl,

3-pyrazolyl, 1-methyl-3-pyrazolyl, 1-ethyl-3-pyrazolyl, 1-propyl-3-pyrazolyl, 1-isopropyl-3-pyrazolyl, 1-butyl-3-pyrazolyl, 2-pyridyl, 6-cyano-2-pyridyl, 6-carboxy-2-pyridyl, 6-trifluoromethyl-2-pyridyl, 6-methoxy-2-pyridyl, 6-ethoxy-2-pyridyl, 6-propoxy-2-pyridyl, 6-isopropoxy-2-pyridyl, 6-butoxy-2-pyridyl, 6-methoxycarbonyl-2-pyridyl, 6-ethoxycarbonyl-2-pyridyl, 6-propoxycarbonyl-2-pyridyl, 6-isopropoxycarbonyl-2-pyridyl, 6-butoxycarbonyl-2-pyridyl, 6-(1-hydroxy-1-methylethyl)-2-pyridyl, 6-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-2-pyridyl, 6-(1-carboxy-1-methylethyl)-2-pyridyl, 3-pyridyl, 6-cyano-3-pyridyl, 6-carboxy-3-pyridyl, 6-trifluoromethyl-3-pyridyl, 6-methoxy-3-pyridyl, 6-ethoxy-3-pyridyl, 6-propoxy-3-pyridyl, 6-isopropoxy-3-pyridyl, 6-butoxy-3-pyridyl, 6-methoxycarbonyl-3-pyridyl, 6-ethoxycarbonyl-3-pyridyl, 6-propoxycarbonyl-3-pyridyl, 6-isopropoxycarbonyl-3-pyridyl, 6-butoxycarbonyl-3-pyridyl, 6-(1-hydroxy-1-methylethyl)-3-pyridyl, 6-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-3-pyridyl, 6-(1-carboxy-1-methylethyl)-3-pyridyl, 2-cyano-3-pyridyl, 2-carboxy-3-pyridyl, 2-trifluoromethyl-3-pyridyl, 2-methoxy-3-pyridyl, 2-ethoxy-3-pyridyl, 2-propoxy-3-pyridyl, 2-isopropoxy-3-pyridyl, 2-butoxy-3-pyridyl, 2-methoxycarbonyl-3-pyridyl, 2-ethoxycarbonyl-3-pyridyl, 2-propoxycarbonyl-3-pyridyl, 2-isopropoxycarbonyl-3-pyridyl, 2-butoxycarbonyl-3-pyridyl, 2-(1-hydroxy-1-methylethyl)-3-pyridyl, 2-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-3-pyridyl, 2-(1-carboxy-1-methylethyl)-3-pyridyl,

4-pyridyl, 2-cyano-4-pyridyl, 2-carboxy-4-pyridyl, 2-trifluoromethyl-4-pyridyl, 2-methoxy-4-pyridyl, 2-ethoxy-4-pyridyl, 2-propoxy-4-pyridyl, 2-isopropoxy-4-pyridyl, 2-butoxy-4-pyridyl, 2-methoxycarbonyl-4-pyridyl, 2-ethoxycarbonyl-4-pyridyl, 2-propoxycarbonyl-4-pyridyl, 2-isopropoxycarbonyl-4-pyridyl, 2-butoxycarbonyl-4-pyridyl, 2-(1-hydroxy-1-methylethyl)-4-pyridyl, 2-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-4-pyridyl, 2-(1-carboxy-1-methylethyl)-4-pyridyl, 3-pyridazinyl, 4-pyridazinyl, 2-pyrimidinyl, 4-pyrimidinyl, 5-pyrimidinyl or 2-pyrazinyl group, etc.,

preferably a phenyl, 2-fluorophenyl, 3-fluorophenyl, 4-fluorophenyl, 2,4-difluorophenyl, 2,6-difluorophenyl, 3,4-difluorophenyl, 2,4,6-trifluorophenyl, 2-chlorophenyl, 3-chlorophenyl, 4-chlorophenyl, 2,4-dichlorophenyl, 2,6-dichlorophenyl, 3,4-dichlorophenyl, 2,4,6-trichlorophenyl, 3-hydroxyphenyl, 4-hydroxyphenyl, 3-cyanophenyl, 4-cyanophenyl, 3-nitrophenyl, 4-nitrophenyl, 3-carboxyphenyl, 4-carboxyphenyl, 3-methylphenyl, 4-methylphenyl, 3-trifluoromethylphenyl, 4-trifluoromethylphenyl, 3-ethylphenyl, 4-ethylphenyl, 3-propylphenyl, 4-propylphenyl, 3-isopropylphenyl, 4-isopropylphenyl, 3-(1-hydroxy-1-methylethyl)phenyl, 4-(1-hydroxy-1-methylethyl)phenyl, 3-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)phenyl, 4-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)phenyl, 3-(1-carboxy-1-methylethyl)phenyl, 4-(1-carboxy-1-methylethyl)phenyl, 3-methoxyphenyl, 4-methoxyphenyl, 3-ethoxyphenyl, 4-ethoxyphenyl, 3-propoxyphenyl, 4-propoxyphenyl, 3-butoxyphenyl, 4-butoxyphenyl, 3-isopropoxyphenyl, 4-isopropoxyphenyl, 3-methoxycarbonylphenyl, 4-methoxycarbonylphenyl, 3-ethoxycarbonylphenyl, 4-ethoxycarbonylphenyl, 3-acetoxyphenyl, 4-acetoxyphenyl, 3-dimethylaminophenyl, 4-dimethylaminophenyl, 3-diethylaminophenyl, 4-diethylaminophenyl, 3-dipropylaminophenyl, 4-dipropylaminophenyl,

2-thienyl, 4-cyano-2-thienyl, 5-cyano-2-thienyl, 4-carboxy-2-thienyl, 5-carboxy-2-thienyl, 4-methyl-2-thienyl, 5-methyl-2-thienyl, 4-trifluoromethyl-2-thienyl, 5-trifluoromethyl-2-thienyl, 4-ethyl-2-thienyl, 5-ethyl-2-thienyl, 4-propyl-2-thienyl, 5-propyl-2-thienyl, 4-isopropyl-2-thienyl, 5-isopropyl-2-thienyl, 4-(1-hydroxy-1-methylethyl)-2-thienyl, 5-(1-hydroxy-1-methylethyl)-2-thienyl, 4-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-2-thienyl, 5-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-2-thienyl, 4-(1-carboxy-1-methylethyl)-2-thienyl, 5-(1-carboxy-1-methylethyl)-2-thienyl, 4-methoxycarbonyl-2-thienyl, 5-methoxycarbonyl-2-thienyl, 4-ethoxycarbonyl-2-thienyl, 5-ethoxycarbonyl-2-thienyl, 4-propoxycarbonyl-2-thienyl, 5-propoxycarbonyl-2-thienyl, 4-butoxycarbonyl-2-thienyl, 5-butoxycarbonyl-2-thienyl, 4-isopropoxycarbonyl-2-thienyl, 5-isopropoxycarbonyl-2-thienyl, 3-thienyl, 4-cyano-3-thienyl, 5-cyano-3-thienyl, 4-carboxy-3-thienyl, 5-carboxy-3-thienyl, 4-methyl-3-thienyl, 5-methyl-3-thienyl, 4-trifluoromethyl-3-thienyl, 5-trifluoromethyl-3-thienyl, 5-ethyl-3-thienyl, 5-propyl-3-thienyl, 5-isopropyl-3-thienyl, 5-(1-hydroxy-1-methylethyl)-3-thienyl, 5-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-3-thienyl, 5-(1-carboxy-1-methylethyl)-3-thienyl, 5-methoxycarbonyl-3-thienyl, 5-ethoxycarbonyl-3-thienyl, 4-thiazolyl, 2-cyano-4-thiazolyl, 2-carboxy-4-thiazolyl, 2-methyl-4-thiazolyl, 2-ethyl-4-thiazolyl, 2-propyl-4-thiazolyl, 2-isopropyl-4-thiazolyl, 2-trifluoromethyl-4-thiazolyl, 2-(1-hydroxy-1-methylethyl)-4-thiazolyl, 2-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-4-thiazolyl, 2-(1-carboxy-1-methylethyl)-4-thiazolyl, 2-methoxycarbonyl-4-thiazolyl, 2-ethoxycarbonyl-4-thiazolyl,

5-thiazolyl, 2-cyano-5-thiazolyl, 2-carboxy-5-thiazolyl, 2-methyl-5-thiazolyl, 2-ethyl-5-thiazolyl, 2-propyl-5-thiazolyl, 2-isopropyl-5-thiazolyl, 2-trifluoromethyl-5-thiazolyl, 2-(1-hydroxy-1-methylethyl)-5-thiazolyl, 2-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-5-thiazolyl, 2-(1-carboxy-1-methylethyl)-5-thiazolyl, 2-methoxycarbonyl-5-thiazolyl, 2-ethoxycarbonyl-5-thiazolyl, 2-propoxycarbonyl-5-thiazolyl, 2-isopropoxycarbonyl-5-thiazolyl, 4-pyrazolyl, 1-methyl-4-pyrazolyl, 1-ethyl-4-pyrazolyl, 3-pyrazolyl, 1-methyl-3-pyrazolyl, 1-ethyl-3-pyrazolyl, 6-cyano-2-pyridyl, 6-carboxy-2-pyridyl, 6-trifluoromethyl-2-pyridyl, 6-methoxy-2-pyridyl, 6-ethoxy-2-pyridyl, 6-methoxycarbonyl-2-pyridyl, 6-ethoxycarbonyl-2-pyridyl, 6-(1-hydroxy-1-methylethyl)-2-pyridyl, 6-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-2-pyridyl, 6-(1-carboxy-1-methylethyl)-2-pyridyl, 6-cyano-3-pyridyl, 6-carboxy-3-pyridyl, 6-trifluoromethyl-3-pyridyl, 6-methoxy-3-pyridyl, 6-ethoxy-3-pyridyl, 6-methoxycarbonyl-3-pyridyl, 6-ethoxycarbonyl-3-pyridyl, 6-(1-hydroxy-1-methylethyl)-3-pyridyl, 6-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-3-pyridyl, 6-(1-carboxy-1-methylethyl)-3-pyridyl, 2-cyano-3-pyridyl, 2-carboxy-3-pyridyl, 2-trifluoromethyl-3-pyridyl, 2-methoxy-3-pyridyl, 2-ethoxy-3-pyridyl, 2-propoxy-3-pyridyl, 2-methoxycarbonyl-3-pyridyl, 2-ethoxycarbonyl-3-pyridyl, 2-propoxycarbonyl-3-pyridyl, 2-(1-hydroxy-1-methylethyl)-3-pyridyl, 2-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-3-pyridyl, 2-(1-carboxy-1-methylethyl)-3-pyridyl, 2-cyano-4-pyridyl, 2-carboxy-4-pyridyl, 2-trifluoromethyl-4-pyridyl, 2-methoxy-4-pyridyl, 2-ethoxy-4-pyridyl, 2-propoxy-4-pyridyl, 2-methoxycarbonyl-4-pyridyl, 2-ethoxycarbonyl-4-pyridyl, 2-(1-hydroxy-1-methylethyl)-4-pyridyl, 2-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-4-pyridyl or 2-(1-carboxy-1-methylethyl)-4-pyridyl group,

more preferably a phenyl, 2-fluorophenyl, 3-fluorophenyl, 4-fluorophenyl, 2,4-difluorophenyl, 2,6-difluorophenyl, 3,4-difluorophenyl, 2-chlorophenyl, 3-chlorophenyl, 4-chlorophenyl, 2,4-dichlorophenyl, 2,6-dichlorophenyl, 3,4-dichlorophenyl, 3-cyanophenyl, 4-cyanophenyl, 3-nitrophenyl, 4-nitrophenyl, 3-carboxyphenyl, 4-carboxyphenyl, 3-trifluoromethylphenyl, 4-trifluoromethylphenyl, 3-(1-hydroxy-1-methylethyl)phenyl, 4-(1-hydroxy-1-methylethyl)phenyl, 3-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)phenyl, 4-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)phenyl, 3-(1-carboxy-1-methylethyl)phenyl, 4-(1-carboxy-1-methylethyl)phenyl, 3-methoxyphenyl, 4-methoxyphenyl, 3-ethoxyphenyl, 4-ethoxyphenyl, 3-methoxycarbonylphenyl, 4-methoxycarbonylphenyl, 3-ethoxycarbonylphenyl, 4-ethoxycarbonylphenyl, 2-thienyl, 4-cyano-2-thienyl, 5-cyano-2-thienyl, 4-carboxy-2-thienyl, 5-carboxy-2-thienyl, 4-methyl-2-thienyl, 5-methyl-2-thienyl, 4-trifluoromethyl-2-thienyl, 5-trifluoromethyl-2-thienyl, 4-(1-hydroxy-1-methylethyl)-2-thienyl, 5-(1-hydroxy-1-methylethyl)-2-thienyl, 4-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-2-thienyl, 5-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-2-thienyl, 4-(1-carboxy-1-methylethyl)-2-thienyl, 5-(1-carboxy-1-methylethyl)-2-thienyl,

3-thienyl, 4-cyano-3-thienyl, 5-cyano-3-thienyl, 4-carboxy-3-thienyl, 5-carboxy-3-thienyl, 4-methyl-3-thienyl, 5-methyl-3-thienyl, 4-trifluoromethyl-3-thienyl, 5-trifluoromethyl-3-thienyl, 5-ethyl-3-thienyl, 5-(1-hydroxy-1-methylethyl)-3-thienyl, 5-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-3-thienyl, 5-(1-carboxy-1-methylethyl)-3-thienyl, 5-methoxycarbonyl-3-thienyl, 4-thiazolyl, 2-cyano-4-thiazolyl, 2-carboxy-4-thiazolyl, 2-methyl-4-thiazolyl, 2-ethyl-4-thiazolyl, 2-propyl-4-thiazolyl, 2-isopropyl-4-thiazolyl, 2-trifluoromethyl-4-thiazolyl, 2-(1-hydroxy-1-methylethyl)-4-thiazolyl, 2-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-4-thiazolyl, 2-(1-carboxy-1-methylethyl)-4-thiazolyl, 2-methoxycarbonyl-4-thiazolyl, 5-thiazolyl, 2-cyano-5-thiazolyl, 2-carboxy-5-thiazolyl, 2-methyl-5-thiazolyl, 2-ethyl-5-thiazolyl, 2-trifluoromethyl-5-thiazolyl, 2-(1-hydroxy-1-methylethyl)-5-thiazolyl, 2-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-5-thiazolyl, 2-(1-carboxy-1-methylethyl)-5-thiazolyl, 2-methoxycarbonyl-5-thiazolyl, 2-ethoxycarbonyl-5-thiazolyl, 2-propoxycarbonyl-5-thiazolyl, 2-isopropoxycarbonyl-5-thiazolyl, 4-pyrazolyl, 6-cyano-2-pyridyl, 6-carboxy-2-pyridyl, 6-trifluoromethyl-2-pyridyl, 6-methoxy-2-pyridyl, 6-ethoxy-2-pyridyl, 6-methoxycarbonyl-2-pyridyl, 6-ethoxycarbonyl-2-pyridyl, 6-(1-hydroxy-1-methylethyl)-2-pyridyl, 6-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-2-pyridyl, 6-(1-carboxy-1-methylethyl)-2-pyridyl, 6-cyano-3-pyridyl, 6-carboxy-3-pyridyl, 6-trifluoromethyl-3-pyridyl, 6-methoxy-3-pyridyl, 6-ethoxy-3-pyridyl, 6-methoxycarbonyl-3-pyridyl, 6-ethoxycarbonyl-3-pyridyl, 6-(1-hydroxy-1-methylethyl)-3-pyridyl, 6-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-3-pyridyl, 6-(1-carboxy-1-methylethyl)-3-pyridyl,

2-cyano-3-pyridyl, 2-carboxy-3-pyridyl, 2-trifluoromethyl-3-pyridyl, 2-methoxy-3-pyridyl, 2-ethoxy-3-pyridyl, 2-propoxy-3-pyridyl, 2-methoxycarbonyl-3-pyridyl, 2-ethoxycarbonyl-3-pyridyl, 2-propoxycarbonyl-3-pyridyl, 2-(1-hydroxy-1-methylethyl)-3-pyridyl, 2-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-3-pyridyl, 2-(1-carboxy-1-methylethyl)-3-pyridyl, 2-cyano-4-pyridyl, 2-carboxy-4-pyridyl, 2-trifluoromethyl-4-pyridyl, 2-methoxy-4-pyridyl, 2-ethoxy-4-pyridyl, 2-propoxy-4-pyridyl, 2-methoxycarbonyl-4-pyridyl, 2-ethoxycarbonyl-4-pyridyl, 2-(1-hydroxy-1-methylethyl)-4-pyridyl, 2-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-4-pyridyl or 2-(1-carboxy-1-methylethyl)-4-pyridyl group,

particularly preferably a phenyl, 2-fluorophenyl, 4-fluorophenyl, 2,4-difluorophenyl, 2-chlorophenyl, 4-chlorophenyl, 4-cyanophenyl, 4-nitrophenyl, 4-carboxyphenyl, 4-trifluoromethylphenyl, 3-methoxyphenyl, 4-methoxyphenyl, 4-methoxycarbonylphenyl, 2-thienyl, 5-cyano-2-thienyl, 5-carboxy-2-thienyl, 5-methyl-2-thienyl, 5-trifluoromethyl-2-thienyl, 3-thienyl, 5-cyano-3-thienyl, 5-carboxy-3-thienyl, 5-methyl-3-thienyl, 5-trifluoromethyl-3-thienyl, 4-thiazolyl, 2-cyano-4-thiazolyl, 2-carboxy-4-thiazolyl, 2-methyl-4-thiazolyl, 2-trifluoromethyl-4-thiazolyl, 2-(1-hydroxy-1-methylethyl)-4-thiazolyl, 2-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-4-thiazolyl, 5-thiazolyl, 2-cyano-5-thiazolyl, 2-carboxy-5-thiazolyl, 2-methyl-5-thiazolyl, 2-trifluoromethyl-5-thiazolyl, 2-(1-hydroxy-1-methylethyl)-5-thiazolyl, 2-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-5-thiazolyl, 4-pyrazolyl, 6-cyano-2-pyridyl, 6-carboxy-2-pyridyl, 6-trifluoromethyl-2-pyridyl, 6-methoxy-2-pyridyl, 6-(1-hydroxy-1-methylethyl)-2-pyridyl, 6-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-2-pyridyl, 6-cyano-3-pyridyl, 6-carboxy-3-pyridyl, 6-trifluoromethyl-3-pyridyl, 6-methoxy-3-pyridyl, 6-(1-hydroxy-1-methylethyl)-3-pyridyl, 6-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-3-pyridyl, 2-cyano-4-pyridyl, 2-carboxy-4-pyridyl, 2-trifluoromethyl-4-pyridyl, 2-methoxy-4-pyridyl, 2-(1-hydroxy-1-methylethyl)-4-pyridyl or 2-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-4-pyridyl group.

As the “C 1 -C 2 alkyl group which is substituted by an aromatic ring group or heteroaromatic ring group each of which may be substituted by a substituent(s) selected from Substituent group (c), and may be substituted by a hydroxy group” of R 4 , there may be mentioned, for example, a benzyl, 2-fluorobenzyl, 3-fluorobenzyl, 4-fluorobenzyl, 2,4-difluorobenzyl, 2,6-difluorobenzyl, 3,4-difluorobenzyl, 2-chlorobenzyl, 3-chlorobenzyl, 4-chlorobenzyl, 2,4-dichlorobenzyl, 2,6-dichlorobenzyl, 3,4-dichlorobenzyl, 2-cyanobenzyl, 3-cyanobenzyl, 4-cyanobenzyl, 3-nitrobenzyl, 4-nitrobenzyl, 3-carboxybenzyl, 4-carboxybenzyl, 3-trifluoromethylbenzyl, 4-trifluoromethylbenzyl, 3-(1-hydroxy-1-methylethyl)benzyl, 4-(1-hydroxy-1-methylethyl)benzyl, 3-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)benzyl, 4-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)benzyl, 3-(1-carboxy-1-methylethyl)benzyl, 4-(1-carboxy-1-methylethyl)benzyl, 3-methoxybenzyl, 4-methoxybenzyl, 3-ethoxybenzyl, 4-ethoxybenzyl, 3-methoxycarbonylbenzyl, 4-methoxycarbonylbenzyl, 3-ethoxycarbonylbenzyl, 4-ethoxycarbonylbenzyl, 1-naphthylmethyl, 2-naphthylmethyl, 2-thienylmethyl, 4-cyano-2-thienylmethyl, 5-cyano-2-thienylmethyl, 4-carboxy-2-thienylmethyl, 5-carboxy-2-thienylmethyl, 4-methyl-2-thienylmethyl, 5-methyl-2-thienylmethyl, 4-trifluoromethyl-2-thienylmethyl, 5-trifluoromethyl-2-thienylmethyl, 4-(1-hydroxy-1-methylethyl)-2-thienylmethyl, 5-(1-hydroxy-1-methylethyl)-2-thienylmethyl, 4-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-2-thienylmethyl, 5-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-2-thienylmethyl, 4-(1-carboxy-1-methylethyl)-2-thienylmethyl, 5-(1-carboxy-1-methylethyl)-2-thienylmethyl,

3-thienylmethyl, 4-cyano-3-thienylmethyl, 5-cyano-3-thienylmethyl, 4-carboxy-3-thienylmethyl, 5-carboxy-3-thienylmethyl, 4-methyl-3-thienylmethyl, 5-methyl-3-thienylmethyl, 4-trifluoromethyl-3-thienylmethyl, 5-trifluoromethyl-3-thienylmethyl, 5-ethyl-3-thienylmethyl, 5-(1-hydroxy-1-methylethyl)-3-thienylmethyl, 5-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-3-thienylmethyl, 5-(1-carboxy-1-methylethyl)-3-thienylmethyl, 5-methoxycarbonyl-3-thienylmethyl, 4-oxazolylmethyl, 5-oxazolylmethyl, 4-isoxazolylmethyl, 5-isoxazolylmethyl, 4-thiazolylmethyl, 2-cyano-4-thiazolylmethyl, 2-carboxy-4-thiazolylmethyl, 2-methyl-4-thiazolylmethyl, 2-ethyl-4-thiazolylmethyl, 2-propyl-4-thiazolylmethyl, 2-isopropyl-4-thiazolylmethyl, 2-trifluoromethyl-4-thiazolylmethyl, 2-(1-hydroxy-1-methylethyl)-4-thiazolylmethyl, 2-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-4-thiazolylmethyl, 2-(1-carboxy-1-methylethyl)-4-thiazolylmethyl, 2-methoxycarbonyl-4-thiazolylmethyl, 5-thiazolylmethyl, 2-cyano-5-thiazolylmethyl, 2-carboxy-5-thiazolylmethyl, 2-methyl-5-thiazolylmethyl, 2-ethyl-5-thiazolylmethyl, 2-trifluoromethyl-5-thiazolylmethyl, 2-(1-hydroxy-1-methylethyl)-5-thiazolylmethyl, 2-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-5-thiazolylmethyl, 2-(1-carboxy-1-methylethyl)-5-thiazolylmethyl, 2-methoxycarbonyl-5-thiazolylmethyl, 2-ethoxycarbonyl-5-thiazolylmethyl, 2-propoxycarbonyl-5-thiazolylmethyl, 2-isopropoxycarbonyl-5-thiazolylmethyl, 4-isothiazolylmethyl, 5-isothiazolylmethyl, 2-imidazolylmethyl, 4-imidazolylmethyl, 3-pyrazolylmethyl, 4-pyrazolylmethyl,

2-pyridylmethyl, 6-cyano-2-pyridylmethyl, 6-carboxy-2-pyridylmethyl, 6-trifluoromethyl-2-pyridylmethyl, 6-methoxy-2-pyridylmethyl, 6-ethoxy-2-pyridylmethyl, 6-methoxycarbonyl-2-pyridylmethyl, 6-ethoxycarbonyl-2-pyridylmethyl, 6-(1-hydroxy-1-methylethyl)-2-pyridylmethyl, 6-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-2-pyridylmethyl, 6-(1-carboxy-1-methylethyl)-2-pyridylmethyl, 3-pyridylmethyl, 6-cyano-3-pyridylmethyl, 6-carboxy-3-pyridylmethyl, 6-trifluoromethyl-3-pyridylmethyl, 6-methoxy-3-pyridylmethyl, 6-ethoxy-3-pyridylmethyl, 6-methoxycarbonyl-3-pyridylmethyl, 6-ethoxycarbonyl-3-pyridylmethyl, 6-(1-hydroxy-1-methylethyl)-3-pyridylmethyl, 6-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-3-pyridylmethyl, 6-(1-carboxy-1-methylethyl)-3-pyridylmethyl, 2-cyano-3-pyridylmethyl, 2-carboxy-3-pyridylmethyl, 2-trifluoromethyl-3-pyridylmethyl, 2-methoxy-3-pyridylmethyl, 2-ethoxy-3-pyridylmethyl, 2-propoxy-3-pyridylmethyl, 2-methoxycarbonyl-3-pyridylmethyl, 2-ethoxycarbonyl-3-pyridylmethyl, 2-propoxycarbonyl-3-pyridylmethyl, 2-(1-hydroxy-1-methylethyl)-3-pyridylmethyl, 2-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-3-pyridylmethyl, 2-(1-carboxy-1-methylethyl)-3-pyridylmethyl, 4-pyridylmethyl, 2-cyano-4-pyridylmethyl, 2-carboxy-4-pyridylmethyl, 2-trifluoromethyl-4-pyridylmethyl, 2-methoxy-4-pyridylmethyl, 2-ethoxy-4-pyridylmethyl, 2-propoxy-4-pyridylmethyl, 2-methoxycarbonyl-4-pyridylmethyl, 2-ethoxycarbonyl-4-pyridylmethyl, 2-(1-hydroxy-1-methylethyl)-4-pyridylmethyl, 2-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-4-pyridylmethyl, 2-(1-carboxy-1-methylethyl)-4-pyridylmethyl, 3-pyridazinylmethyl, 4-pyridazinylmethyl, 2-pyrimidinylmethyl, 4-pyrimidinylmethyl, 5-pyrimidinylmethyl, 2-pyrazinylmethyl, phenethyl, 2-fluorophenethyl, 3-fluorophenethyl, 4-fluorophenethyl, 2,4-difluorophenethyl, 2,6-difluorophenethyl, 3,4-difluorophenethyl, 2-chlorophenethyl, 3-chlorophenethyl, 4-chlorophenethyl, 2,4-dichlorophenethyl, 2,6-dichlorophenethyl, 3,4-dichlorophenethyl, 3-cyanophenethyl, 4-cyanophenethyl, 3-nitrophenethyl, 4-nitrophenethyl, 3-carboxyphenethyl, 4-carboxyphenethyl, 3-trifluoromethylphenethyl, 4-trifluoromethylphenethyl, 3-(1-hydroxy-1-methylethyl)phenethyl, 4-(1-hydroxy-1-methylethyl)phenethyl, 3-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)phenethyl, 4-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)phenethyl, 3-(1-carboxy-1-methylethyl)phenethyl, 4-(1-carboxy-1-methylethyl)phenethyl, 3-methoxyphenethyl, 4-methoxyphenethyl, 3-ethoxyphenethyl, 4-ethoxyphenethyl, 3-methoxycarbonylphenethyl, 4-methoxycarbonylphenethyl, 3-ethoxycarbonylphenethyl, 4-ethoxycarbonylphenethyl, 2-(2-thienyl)ethyl, 2-(4-cyano-2-thienyl)ethyl, 2-(5-cyano-2-thienyl)ethyl, 2-(4-carboxy-2-thienyl)ethyl, 2-(5-carboxy-2-thienyl)ethyl, 2-(4-methyl-2-thienyl)ethyl, 2-(5-methyl-2-thienyl)ethyl, 2-(4-trifluoromethyl-2-thienyl)ethyl, 2-(5-trifluoromethyl-2-thienyl)ethyl, 2-(4-(1-hydroxy-1-methylethyl)-2-thienyl)ethyl, 2-(5-(1-hydroxy-1-methylethyl)-2-thienyl)ethyl, 2-(4-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-2-thienyl)ethyl, 2-(5-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-2-thienyl)ethyl, 2-(4-(1-carboxy-1-methylethyl)-2-thienyl)ethyl, 2-(5-(1-carboxy-1-methylethyl)-2-thienyl)ethyl, 2-(3-thienyl)ethyl, 2-(4-cyano-3-thienyl)ethyl, 2-(5-cyano-3-thienyl)ethyl, 2-(4-carboxy-3-thienyl)ethyl, 2-(5-carboxy-3-thienyl)ethyl, 2-(4-methyl-3-thienyl)ethyl, 2-(5-methyl-3-thienyl)ethyl, 2-(4-trifluoromethyl-3-thienyl)ethyl, 2-(5-trifluoromethyl-3-thienyl)ethyl, 2-(5-ethyl-3-thienyl)ethyl, 2-(5-(1-hydroxy-1-methylethyl)-3-thienyl)ethyl,

2-(5-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-3-thienyl)ethyl, 2-(5-(1-carboxy-1-methylethyl)-3-thienyl)ethyl, 2-(5-methoxycarbonyl-3-thienyl)ethyl, 2-(4-thiazolyl)ethyl, 2-(2-cyano-4-thiazolyl)ethyl, 2-(2-carboxy-4-thiazolyl)ethyl, 2-(2-methyl-4-thiazolyl)ethyl, 2-(2-ethyl-4-thiazolyl)ethyl, 2-(2-propyl-4-thiazolyl)ethyl, 2-(2-isopropyl-4-thiazolyl)ethyl, 2-(2-trifluoromethyl-4-thiazolyl)ethyl, 2-(2-(1-hydroxy-1-methylethyl)-4-thiazolyl)ethyl, 2-(2-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-4-thiazolyl)ethyl, 2-(2-(1-carboxy-1-methylethyl)-4-thiazolyl)ethyl, 2-(2-methoxycarbonyl-4-thiazolyl)ethyl, 2-(5-thiazolyl)ethyl, 2-(2-cyano-5-thiazolyl)ethyl, 2-(2-carboxy-5-thiazolyl)ethyl, 2-(2-methyl-5-thiazolyl)ethyl, 2-(2-ethyl-5-thiazolyl)ethyl, 2-(2-trifluoromethyl-5-thiazolyl)ethyl, 2-(2-(1-hydroxy-1-methylethyl)-5-thiazolyl)ethyl, 2-(2-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-5-thiazolyl)ethyl, 2-(2-(1-carboxy-1-methylethyl)-5-thiazolyl)ethyl, 2-(2-methoxycarbonyl-5-thiazolyl)ethyl, 2-(2-ethoxycarbonyl-5-thiazolyl)ethyl, 2-(2-propoxycarbonyl-5-thiazolyl)ethyl, 2-(2-isopropoxycarbonyl-5-thiazolyl)ethyl,

2-(4-pyrazolyl)ethyl, 2-(6-cyano-2-pyridyl)ethyl, 2-(6-carboxy-2-pyridyl)ethyl, 2-(6-trifluoromethyl-2-pyridyl)ethyl, 2-(6-methoxy-2-pyridyl)ethyl, 2-(6-ethoxy-2-pyridyl)ethyl, 2-(6-methoxycarbonyl-2-pyridyl)ethyl, 2-(6-ethoxycarbonyl-2-pyridyl)ethyl, 2-(6-(1-hydroxy-1-methylethyl)-2-pyridyl)ethyl, 2-(6-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-2-pyridyl)ethyl, 2-(6-(1-carboxy-1-methylethyl)-2-pyridyl)ethyl, 2-(6-cyano-3-pyridyl)ethyl, 2-(6-carboxy-3-pyridyl)ethyl, 2-(6-trifluoromethyl-3-pyridyl)ethyl, 2-(6-methoxy-3-pyridyl)ethyl, 2-(6-ethoxy-3-pyridyl)ethyl, 2-(6-methoxycarbonyl-3-pyridyl)ethyl, 2-(6-ethoxycarbonyl-3-pyridyl)ethyl, 2-(6-(1-hydroxy-1-methylethyl)-3-pyridyl)ethyl, 2-(6-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)ethyl, 2-(6-(1-carboxy-1-methylethyl)-3-pyridyl)ethyl, 2-(2-cyano-3-pyridyl)ethyl, 2-(2-carboxy-3-pyridyl)ethyl, 2-(2-trifluoromethyl-3-pyridyl)ethyl, 2-(2-methoxy-3-pyridyl)ethyl, 2-(2-ethoxy-3-pyridyl)ethyl, 2-(2-propoxy-3-pyridyl)ethyl, 2-(2-methoxycarbonyl-3-pyridyl)ethyl, 2-(2-ethoxycarbonyl-3-pyridyl)ethyl, 2-(2-propoxycarbonyl-3-pyridyl)ethyl, 2-(2-(1-hydroxy-1-methylethyl)-3-pyridyl)ethyl, 2-(2-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)ethyl, 2-(2-(1-carboxy-1-methylethyl)-3-pyridyl)ethyl, 2-(2-cyano-4-pyridyl)ethyl, 2-(2-carboxy-4-pyridyl)ethyl, 2-(2-trifluoromethyl-4-pyridyl)ethyl, 2-(2-methoxy-4-pyridyl)ethyl, 2-(2-ethoxy-4-pyridyl)ethyl, 2-(2-propoxy-4-pyridyl)ethyl, 2-(2-methoxycarbonyl-4-pyridyl)ethyl, 2-(2-ethoxycarbonyl-4-pyridyl)ethyl, 2-(2-(1-hydroxy-1-methylethyl)-4-pyridyl)ethyl, 2-(2-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-4-pyridyl)ethyl, 2-(2-(1-carboxy-1-methylethyl)-4-pyridyl)ethyl,

hydroxyphenylmethyl, (2-fluorophenyl)hydroxymethyl, (3-fluorophenyl)hydroxymethyl, (4-fluorophenyl)hydroxymethyl, (2,4-difluorophenyl)hydroxymethyl, (2,6-difluorophenyl)hydroxymethyl, (3,4-difluorophenyl)hydroxymethyl, (2-chlorophenyl)hydroxymethyl, (3-chlorophenyl)hydroxymethyl, (4-chlorophenyl)hydroxymethyl, (2,4-dichlorophenyl)hydroxylmethyl, (2,6-dichlorophenyl)hydroxymethyl, (3,4-dichlorophenyl)hydroxymethyl, (3-cyanophenyl)hydroxymethyl, (4-cyanophenyl)hydroxymethyl, hydroxy(3-nitrophenyl)methyl, hydroxy(4-nitrophenyl)methyl, (3-carboxyphenyl)hydroxymethyl, (4-carboxyphenyl)hydroxymethyl, hydroxy(3-trifluoromethylphenyl)methyl, hydroxy(4-trifluoromethylphenyl)methyl, hydroxy(3-methoxyphenyl)methyl, hydroxy(4-methoxyphenyl)methyl, (3-ethoxyphenyl)hydroxymethyl, (4-ethoxyphenyl)hydroxymethyl, hydroxy(3-methoxycarbonylphenyl)methyl, hydroxy(4-methoxycarbonylphenyl)methyl, (3-ethoxycarbonylphenyl)hydroxymethyl, (4-ethoxycarbonylphenyl)hydroxymethyl, hydroxy(2-thienyl)methyl, hydroxy(5-methyl-2-thienyl)methyl or hydroxy(5-trifluoromethyl-2-thienyl)methyl group, etc.,

preferably a benzyl, 2-fluorobenzyl, 3-fluorobenzyl, 4-fluorobenzyl, 2,4-difluorobenzyl, 2,6-difluorobenzyl, 3,4-difluorobenzyl, 2-chlorobenzyl, 3-chlorobenzyl, 4-chlorobenzyl, 2,4-dichlorobenzyl, 2,6-dichlorobenzyl, 3,4-dichlorobenzyl, 2-cyanobenzyl, 3-cyanobenzyl, 4-cyanobenzyl, 3-nitrobenzyl, 4-nitrobenzyl, 3-carboxybenzyl, 4-carboxybenzyl, 3-trifluoromethylbenzyl, 4-trifluoromethylbenzyl, 3-(1-hydroxy-1-methylethyl)benzyl, 4-(1-hydroxy-1-methylethyl)benzyl, 3-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)benzyl, 4-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)benzyl, 3-(1-carboxy-1-methylethyl)benzyl, 4-(1-carboxy-1-methylethyl)benzyl, 3-methoxybenzyl, 4-methoxybenzyl, 3-ethoxybenzyl, 4-ethoxybenzyl, 3-methoxycarbonylbenzyl, 4-methoxycarbonylbenzyl, 3-ethoxycarbonylbenzyl, 4-ethoxycarbonylbenzyl, 2-thienylmethyl, 4-cyano-2-thienylmethyl, 5-cyano-2-thienylmethyl, 4-carboxy-2-thienylmethyl, 5-carboxy-2-thienylmethyl,

4-methyl-2-thienylmethyl, 5-methyl-2-thienylmethyl, 4-trifluoromethyl-2-thienylmethyl, 5-trifluoromethyl-2-thienylmethyl, 4-(1-hydroxy-1-methylethyl)-2-thienylmethyl, 5-(1-hydroxy-1-methylethyl)-2-thienylmethyl, 4-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-2-thienylmethyl, 5-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-2-thienylmethyl, 4-(1-carboxy-1-methylethyl)-2-thienylmethyl, 5-(1-carboxy-1-methylethyl)-2-thienylmethyl, 3-thienylmethyl, 4-cyano-3-thienylmethyl, 5-cyano-3-thienylmethyl, 4-carboxy-3-thienylmethyl, 5-carboxy-3-thienylmethyl, 4-methyl-3-thienylmethyl, 5-methyl-3-thienylmethyl, 4-trifluoromethyl-3-thienylmethyl, 5-trifluoromethyl-3-thienylmethyl, 5-ethyl-3-thienylmethyl, 5-(1-hydroxy-1-methylethyl)-3-thienylmethyl, 5-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-3-thienylmethyl, 5-(1-carboxy-1-methylethyl)-3-thienylmethyl, 5-methoxycarbonyl-3-thienylmethyl, 4-thiazolylmethyl, 2-cyano-4-thiazolylmethyl, 2-carboxy-4-thiazolylmethyl, 2-methyl-4-thiazolylmethyl, 2-ethyl-4-thiazolylmethyl, 2-propyl-4-thiazolylmethyl, 2-isopropyl-4-thiazolylmethyl, 2-trifluoromethyl-4-thiazolylmethyl, 2-(1-hydroxy-1-methylethyl)-4-thiazolylmethyl, 2-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-4-thiazolylmethyl, 2-(1-carboxy-1-methylethyl)-4-thiazolylmethyl, 2-methoxycarbonyl-4-thiazolylmethyl,

5-thiazolylmethyl, 2-cyano-5-thiazolylmethyl, 2-carboxy-5-thiazolylmethyl, 2-methyl-5-thiazolylmethyl, 2-ethyl-5-thiazolylmethyl, 2-trifluoromethyl-5-thiazolylmethyl, 2-(1-hydroxy-1-methylethyl)-5-thiazolylmethyl, 2-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-5-thiazolylmethyl, 2-(1-carboxy-1-methylethyl)-5-thiazolyl, 2-methoxycarbonyl-5-thiazolylmethyl, 4-pyrazolylmethyl, 6-cyano-2-pyridylmethyl, 6-carboxy-2-pyridylmethyl, 6-trifluoromethyl-2-pyridylmethyl, 6-methoxy-2-pyridylmethyl, 6-ethoxy-2-pyridylmethyl, 6-methoxycarbonyl-2-pyridylmethyl, 6-ethoxycarbonyl-2-pyridylmethyl, 6-(1-hydroxy-1-methylethyl)-2-pyridylmethyl, 6-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-2-pyridylmethyl, 6-(1-carboxy-1-methylethyl)-2-pyridylmethyl, 6-cyano-3-pyridylmethyl, 6-carboxy-3-pyridylmethyl, 6-trifluoromethyl-3-pyridylmethyl, 6-methoxy-3-pyridylmethyl, 6-ethoxy-3-pyridylmethyl, 6-methoxycarbonyl-3-pyridylmethyl, 6-ethoxycarbonyl-3-pyridylmethyl, 6-(1-hydroxy-1-methylethyl)-3-pyridylmethyl, 6-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-3-pyridylmethyl, 6-(1-carboxy-1-methylethyl)-3-pyridylmethyl,

2-cyano-3-pyridylmethyl, 2-carboxy-3-pyridylmethyl, 2-trifluoromethyl-3-pyridylmethyl, 2-methoxy-3-pyridylmethyl, 2-ethoxy-3-pyridylmethyl, 2-propoxy-3-pyridylmethyl, 2-methoxycarbonyl-3-pyridylmethyl, 2-ethoxycarbonyl-3-pyridylmethyl, 2-propoxycarbonyl-3-pyridylmethyl, 2-(1-hydroxy-1-methylethyl)-3-pyridylmethyl, 2-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-3-pyridylmethyl, 2-(1-carboxy-1-methylethyl)-3-pyridylmethyl, 2-cyano-4-pyridylmethyl, 2-carboxy-4-pyridylmethyl, 2-trifluoromethyl-4-pyridylmethyl, 2-methoxy-4-pyridylmethyl, 2-ethoxy-4-pyridylmethyl, 2-propoxy-4-pyridylmethyl, 2-methoxycarbonyl-4-pyridylmethyl, 2-ethoxycarbonyl-4-pyridylmethyl, 2-(1-hydroxy-1-methylethyl)-4-pyridylmethyl, 2-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-4-pyridylmethyl, 2-(1-carboxy-1-methylethyl)-4-pyridylmethyl, phenethyl, 2-fluorophenethyl, 3-fluorophenethyl, 4-fluorophenethyl, 3-chlorophenethyl, 3-cyanophenethyl, 3-carboxyphenethyl, 3-methoxyphenethyl, 2-(2-thienyl)ethyl, 2-(3-thienyl)ethyl, 2-(4-thiazolyl)ethyl, 2-(5-thiazolyl)ethyl, 2-(4-pyrazolyl)ethyl, 2-(6-cyano-2-pyridyl)ethyl, 2-(6-carboxy-2-pyridyl)ethyl, 2-(6-methoxy-2-pyridyl)ethyl, 2-(6-cyano-3-pyridyl)ethyl, 2-(6-carboxy-3-pyridyl)ethyl, 2-(6-methoxy-3-pyridyl)ethyl, 2-(2-cyano-3-pyridyl)ethyl, 2-(2-carboxy-3-pyridyl)ethyl, 2-(2-methoxy-3-pyridyl)ethyl, hydroxylphenylmethyl, (2-fluorophenyl)hydroxymethyl, (3-fluorophenyl)hydroxymethyl, (4-fluorophenyl)hydroxymethyl, (3-chlorophenyl)hydroxymethyl, (3,4-difluorophenyl)hydroxymethyl, (2,4-difluorophenyl)hydroxymethyl, (3-cyanophenyl)hydroxymethyl, hydroxy(3-trifluoromethylphenyl)methyl or hydroxy(2-thienyl)methyl group,

more preferably a benzyl, 2-fluorobenzyl, 3-fluorobenzyl, 4-fluorobenzyl, 2,4-difluorobenzyl, 3,4-difluorobenzyl, 2-chlorobenzyl, 3-chlorobenzyl, 4-chlorobenzyl, 2,4-dichlorobenzyl, 3,4-dichlorobenzyl, 2-cyanobenzyl, 3-cyanobenzyl, 4-cyanobenzyl, 3-nitrobenzyl, 3-carboxybenzyl, 4-carboxybenzyl, 3-trifluoromethylbenzyl, 4-trifluoromethylbenzyl, 3-(1-hydroxy-1-methylethyl)benzyl, 4-(1-hydroxy-1-methylethyl)benzyl, 3-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)benzyl, 4-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)benzyl, 4-(1-carboxy-1-methylethyl)benzyl, 3-methoxybenzyl, 4-methoxybenzyl, 3-methoxycarbonylbenzyl, 4-methoxycarbonylbenzyl, 2-thienylmethyl, 5-cyano-2-thienylmethyl, 5-carboxy-2-thienylmethyl, 5-methyl-2-thienylmethyl, 5-trifluoromethyl-2-thienylmethyl, 5-(1-hydroxy-1-methylethyl)-2-thienylmethyl, 5-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-2-thienylmethyl, 4-(1-carboxy-1-methylethyl)-2-thienylmethyl, 3-thienylmethyl, 5-cyano-3-thienylmethyl, 5-carboxy-3-thienylmethyl, 5-methyl-3-thienylmethyl, 5-trifluoromethyl-3-thienylmethyl, 5-(1-hydroxy-1-methylethyl)-3-thienylmethyl, 5-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-3-thienylmethyl, 4-thiazolylmethyl, 2-cyano-4-thiazolylmethyl, 2-carboxy-4-thiazolylmethyl, 2-methyl-4-thiazolylmethyl, 2-trifluoromethyl-4-thiazolylmethyl, 2-(1-hydroxy-1-methylethyl)-4-thiazolylmethyl, 2-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-4-thiazolylmethyl, 5-thiazolylmethyl, 2-cyano-5-thiazolylmethyl, 2-carboxy-5-thiazolylmethyl, 2-methyl-5-thiazolylmethyl, 2-trifluoromethyl-5-thiazolylmethyl, 2-(1-hydroxy-1-methylethyl)-5-thiazolylmethyl, 2-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-5-thiazolylmethyl, 4-pyrazolylmethyl, 6-cyano-2-pyridylmethyl, 6-carboxy-2-pyridylmethyl, 6-trifluoromethyl-2-pyridylmethyl, 6-methoxy-2-pyridylmethyl, 6-(1-hydroxy-1-methylethyl)-2-pyridylmethyl, 6-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-2-pyridylmethyl,

6-cyano-3-pyridylmethyl, 6-carboxy-3-pyridylmethyl, 6-trifluoromethyl-3-pyridylmethyl, 6-methoxy-3-pyridylmethyl, 6-(1-hydroxy-1-methylethyl)-3-pyridylmethyl, 6-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-3-pyridylmethyl, 2-cyano-3-pyridylmethyl, 2-carboxy-3-pyridylmethyl, 2-trifluoromethyl-3-pyridylmethyl, 2-methoxy-3-pyridylmethyl, 2-(1-hydroxy-1-methylethyl)-3-pyridylmethyl, 2-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-3-pyridylmethyl, 2-cyano-4-pyridylmethyl, 2-carboxy-4-pyridylmethyl, 2-trifluoromethyl-4-pyridylmethyl, 2-methoxy-4-pyridylmethyl, 2-(1-hydroxy-1-methylethyl)-4-pyridylmethyl, 2-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-4-pyridylmethyl, phenethyl, 2-fluorophenethyl, 3-fluorophenethyl, 4-fluorophenethyl, 3-chlorophenethyl, 3-cyanophenethyl, 3-carboxyphenethyl, 3-methoxyphenethyl, 2-(2-thienyl)ethyl, 2-(3-thienyl)ethyl, 2-(6-cyano-2-pyridyl)ethyl, 2-(6-methoxy-2-pyridyl)ethyl, 2-(6-cyano-3-pyridyl)ethyl, 2-(6-methoxy-3-pyridyl)ethyl, 2-(2-cyano-3-pyridyl)ethyl, 2-(2-methoxy-3-pyridyl)ethyl, hydroxyphenylmethyl, (2-fluorophenyl)hydroxymethyl, (3-fluorophenyl)hydroxymethyl, (4-fluorophenyl)hydroxymethyl, (3,4-difluorophenyl)hydroxymethyl or hydroxy(2-thienyl)methyl group,

particularly preferably a benzyl, 2-fluorobenzyl, 3-fluorobenzyl, 4-fluorobenzyl, 2,4-difluorobenzyl, 3,4-difluorobenzyl, 2-chlorobenzyl, 3-chlorobenzyl, 2-cyanobenzyl, 3-cyanobenzyl, 3-carboxybenzyl, 4-carboxybenzyl, 3-trifluoromethylbenzyl, 4-methoxybenzyl, 3-methoxycarbonylbenzyl, 2-thienylmethyl, 5-cyano-2-thienylmethyl, 5-carboxy-2-thienylmethyl, 5-trifluoromethyl-2-thienylmethyl, 3-thienylmethyl, 5-cyano-3-thienylmethyl, 5-carboxy-3-thienylmethyl, 5-trifluoromethyl-3-thienylmethyl, 4-thiazolylmethyl, 2-cyano-4-thiazolylmethyl, 2-carboxy-4-thiazolylmethyl, 2-(1-hydroxy-1-methylethyl)-4-thiazolylmethyl, 2-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-4-thiazolylmethyl, 2-cyano-5-thiazolylmethyl, 2-carboxy-5-thiazolylmethyl, 2-(1-hydroxy-1-methylethyl)-5-thiazolylmethyl, 2-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-5-thiazolylmethyl, 6-cyano-2-pyridylmethyl, 6-carboxy-2-pyridylmethyl, 6-methoxy-2-pyridylmethyl, 6-(1-hydroxy-1-methylethyl)-2-pyridylmethyl, 6-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-2-pyridylmethyl, 6-cyano-3-pyridylmethyl, 6-carboxy-3-pyridylmethyl, 6-methoxy-3-pyridylmethyl, 6-(1-hydroxy-1-methylethyl)-3-pyridylmethyl, 6-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-3-pyridylmethyl, 2-cyano-3-pyridylmethyl, 2-carboxy-3-pyridylmethyl, 2-methoxy-3-pyridylmethyl, 2-(1-hydroxy-1-methylethyl)-3-pyridylmethyl, 2-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-3-pyridylmethyl, 2-cyano-4-pyridylmethyl, 2-carboxy-4-pyridylmethyl, 2-methoxy-4-pyridylmethyl, 2-(1-hydroxy-1-methylethyl)-4-pyridylmethyl, 2-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-4-pyridylmethyl, phenethyl, 2-fluorophenethyl, 3-fluorophenethyl, 4-fluorophenethyl, 3-cyanophenethyl, 2-(2-thienyl)ethyl, 2-(6-cyano-2-pyridyl)ethyl, 2-(6-cyano-3-pyridyl)ethyl, 2-(2-cyano-3-pyridyl)ethyl, hydroxyphenylmethyl, (3-fluorophenyl)hydroxymethyl, (4-fluorophenyl)hydroxymethyl or hydroxy(2-thienyl)methyl group.

As R 4 , there may be preferably mentioned a hydrogen atom, chlorine atom, bromine atom, iodine atom, methyl, ethyl, propyl, isopropyl, butyl, isobutyl, pentyl, isopentyl, neopentyl, 2-methylbutyl, hexyl, 2-methylpentyl, 3-methylpentyl, 4-methylpentyl, 2-ethylbutyl, 2,2-dimethylbutyl, 3,3-dimethylbutyl, 2,3-dimethylbutyl, heptyl, 2-methylhexyl, 3-methylhexyl, 4-methylhexyl, 5-methylhexyl, 2,3-dimethylpentyl, 2,4-dimethylpentyl, 3,4-dimethylpentyl, 2,2-dimethylpentyl, 3,3-dimethylpentyl, 4,4-dimethylpentyl, octyl, 2-methylheptyl, 3-methylheptyl, 4-methylheptyl, 5-methylheptyl, 6-methylheptyl, 2-ethylhexyl, 3-ethylhexyl, 4-ethylhexyl, 2,3-dimethylhexyl, 2,4-dimethylhexyl, 2,5-dimethylhexyl, 3,4-dimethylhexyl, 3,5-dimethylhexyl, 2,2-dimethylhexyl, 3,3-dimethylhexyl, 4,4-dimethylhexyl, 5,5-dimethylhexyl, 2-methyl-3-ethylpentyl, 2-propylpentyl, 2,2,3,3-tetramethylbutyl, trifluoromethyl, 2,2,2-trifluoroethyl, 3,3,3-trifluoropropyl, 2-chloroethyl, hydroxymethyl, 1-hydroxyethyl, 2-hydroxyethyl, 1-hydroxypropyl, 3-hydroxypropyl, 1-hydroxybutyl, 4-hydroxybutyl, 1-hydroxypentyl, 5-hydroxypentyl, 1-hydroxyhexyl, 6-hydroxyhexyl, 1-hydroxy-2-methylpropyl, 2-hydroxy-2-methylpropyl, 1-hydroxy-3-methylbutyl, 3-hydroxy-3-methylbutyl, 1-hydroxy-4-methylpentyl, 4-hydroxy-4-methylpentyl, 2-ethyl-2-hydroxybutyl, cyanomethyl, 2-cyanoethyl, 3-cyanopropyl, 4-cyanobutyl, 5-cyanopentyl, 6-cyanohexyl, 2-cyano-2-methylpropyl, 3-cyano-3-methylbutyl, 4-cyano-4-methylpentyl, 2-cyano-2-ethylbutyl, carboxymethyl, 2-carboxyethyl, 3-carboxypropyl, 4-carboxybutyl, 5-carboxypentyl, 6-carboxyhexyl, 2-carboxy-2-methylpropyl, 3-carboxy-3-methylbutyl, 4-carboxy-4-methylpentyl, 2-carboxy-2-ethylbutyl, methoxymethyl, 2-methoxyethyl, 2-methoxypropyl, 3-methoxypropyl, 4-methoxybutyl, 5-methoxypentyl, 6-methoxyhexyl, 2-methoxy-2-methylpropyl, 3-methoxy-3-methylbutyl, 4-methoxy-4-methylpentyl, 2-ethyl-2-methoxybutyl,

ethoxymethyl, 2-ethoxyethyl, 2-ethoxypropyl, 3-ethoxypropyl, 4-ethoxybutyl, 5-ethoxypentyl, 6-ethoxyhexyl, 2-ethoxy-2-methylpropyl, 3-ethoxy-3-methylbutyl, 4-ethoxy-4-methylpentyl, 2-ethoxy-2-ethylbutyl, propoxymethyl, 2-propoxyethyl, 3-propoxypropyl, 4-propoxybutyl, 5-propoxypentyl, 6-propoxyhexyl, 2-methyl-2-propoxypropyl, 3-methyl-3-propoxybutyl, 4-methyl-4-propoxypentyl, 2-ethyl-2-propoxybutyl, butoxymethyl, 2-butoxyethyl, 3-butoxypropyl, 4-butoxybutyl, 5-butoxypentyl, 6-butoxyhexyl, 2-butoxy-2-methylpropyl, 3-butoxy-3-methylbutyl, 4-butoxy-4-methylpentyl, 2-butoxy-2-ethylbutyl, isopropoxymethyl, 2-isopropoxyethyl, 3-isopropoxypropyl, 4-isopropoxybutyl, 5-isopropoxypentyl, 6-isopropoxyhexyl, 2-isopropoxy-2-methylpropyl, 3-isopropoxy-3-methylbutyl, 4-isopropoxy-4-methylpentyl, 2-ethyl-2-isopropoxybutyl, isobutoxymethyl, 2-isobutoxyethyl, sec-butoxymethyl, 2-(sec-butoxy)ethyl, tert-butoxymethyl, 2-(tert-butoxy)ethyl, 1-ethylpropoxymethyl, 2-(1-ethylpropoxy)ethyl, 2-fluoroethoxymethyl, 2-(2-fluoroethoxy)ethyl, 2-(2-fluoroethoxy)propyl, 3-(2-fluoroethoxy)propyl, 4-(2-fluoroethoxy)butyl, 5-(2-fluoroethoxy)pentyl, 6-(2-fluoroethoxy)hexyl, 2-(2-fluoroethoxy)-2-methylpropyl, 3-(2-fluoroethoxy)-3-methylbutyl, 4-(2-fluoroethoxy)-4-methylpentyl, 2-ethyl-2-(2-fluoroethoxy)butyl, (2,2,2-trifluoroethoxy)methyl, 2-(2,2,2-trifluoroethoxy)ethyl, 2-(2,2,2-trifluoroethoxy)propyl, 3-(2,2,2-trifluoroethoxy)propyl, 4-(2,2,2-trifluoroethoxy)butyl, 5-(2,2,2-trifluoroethoxy)pentyl, 6-(2,2,2-trifluoroethoxy)hexyl, 2-(2,2,2-trifluoroethoxy)-2-methylpropyl, 3-(2,2,2-trifluoroethoxy)-3-methylbutyl, 4-(2,2,2-trifluoroethoxy)-4-methylpentyl, 2-ethyl-2-(2,2,2-trifluoroethoxy)butyl, cyclopropoxymethyl, 2-cyclopropoxyethyl, 2-cyclopropoxypropyl, 3-cyclopropoxypropyl, 4-cyclopropoxybutyl, 5-cyclopropoxypentyl, 6-cyclopropoxyhexyl, 2-cyclopropoxy-2-methylpropyl, 3-cyclopropoxy-3-methylbutyl, 4-cyclopropoxy-4-methylpentyl, 2-cyclopropoxy-2-ethylbutyl, cyclobutoxymethyl, 2-cyclobutoxyethyl, 2-cyclobutoxypropyl, 3-cyclobutoxypropyl, 4-cyclobutoxybutyl, 5-cyclobutoxypentyl, 6-cyclobutoxyhexyl, 2-cyclobutoxy-2-methylpropyl, 3-cyclobutoxy-3-methylbutyl, 4-cyclobutoxy-4-methylpentyl, 2-cyclobutoxy-2-ethylbutyl, cyclopropylmethoxymethyl, 2-cyclopropylmethoxyethyl, 2-cyclopropylmethoxypropyl, 3-cyclopropylmethoxypropyl, 4-cyclopropylmethoxybutyl, 5-cyclopropylmethoxypentyl, 6-cyclopropylmethoxyhexyl, 2-cyclopropylmethoxy-2-methylpropyl, 3-cyclopropylmethoxy-3-methylbutyl, 4-cyclopropylmethoxy-4-methylpentyl, 2-cyclopropylmethoxy-2-ethylbutyl, cyclobutylmethoxymethyl, 2-cyclobutylmethoxyethyl, 2-cyclobutylmethoxypropyl, 3-cyclobutylmethoxypropyl, 4-cyclobutylmethoxybutyl, 5-cyclobutylmethoxypentyl, 6-cyclobutylmethoxyhexyl, 2-cyclobutylmethoxy-2-methylpropyl, 3-cyclobutylmethoxy-3-methylbutyl, 4-cyclobutylmethoxy-4-methylpentyl, 2-cyclobutylmethoxy-2-ethylbutyl, methoxycarbonylmethyl, 2-methoxycarbonylethyl, 3-methoxycarbonylpropyl, 4-methoxycarbonylbutyl, 5-methoxycarbonylpentyl, 6-methoxycarbonylhexyl, 2-methoxycarbonyl-2-methylpropyl, 3-methoxycarbonyl-3-methylbutyl, 4-methoxycarbonyl-4-methylpentyl, 2-ethyl-2-methoxycarbonylbutyl, ethoxycarbonylmethyl, 2-ethoxycarbonylethyl, 3-ethoxycarbonylpropyl, 4-ethoxycarbonylbutyl, 5-ethoxycarbonylpentyl, 6-ethoxycarbonylhexyl, 2-ethoxycarbonyl-2-methylpropyl, 3-ethoxycarbonyl-3-methylbutyl, 4-ethoxycarbonyl-4-methylpentyl, 2-ethoxycarbonyl-2-ethylbutyl, propoxycarbonylmethyl, 2-propoxycarbonylethyl, 3-propoxycarbonylpropyl, 4-propoxycarbonylbutyl, 5-propoxycarbonylpentyl, 6-propoxycarbonylhexyl, 2-methyl-2-propoxycarbonylpropyl, 3-methyl-3-propoxycarbonylbutyl, 4-methyl-4-propoxycarbonylpentyl, 2-ethyl-2-propoxycarbonylbutyl,

butoxycarbonylmethyl, 2-butoxycarbonylethyl, 3-butoxycarbonylpropyl, 4-butoxycarbonylbutyl, 5-butoxycarbonylpentyl, 6-butoxycarbonylhexyl, 2-butoxycarbonyl-2-methylpropyl, 3-butoxycarbonyl-3-methylbutyl, 4-butoxycarbonyl-4-methylpentyl, 2-butoxycarbonyl-2-ethylbutyl, isopropoxycarbonylmethyl, 2-isopropoxycarbonylethyl, 3-isopropoxycarbonylpropyl, 4-isopropoxycarbonylbutyl, 5-isopropoxycarbonylpentyl, 6-isopropoxycarbonylhexyl, 2-isopropoxycarbonyl-2-methylpropyl, 3-isopropoxycarbonyl-3-methylbutyl, 4-isopropoxycarbonyl-4-methylpentyl, 2-ethyl-2-isopropoxycarbonylbutyl, isobutoxycarbonylmethyl, 2-isobutoxycarbonylethyl, 3-isobutoxycarbonylpropyl, 4-isobutoxycarbonylbutyl, 5-isobutoxycarbonylpentyl, 6-isobutoxycarbonylhexyl, 2-isobutoxycarbonyl-2-methylpropyl, 3-isobutoxycarbonyl-3-methylbutyl, 4-isobutoxycarbonyl-4-methylpentyl, 2-ethyl-2-isobutoxycarbonylbutyl, acetyloxymethyl, 2-acetyloxyethyl, 3-acetyloxypropyl, 4-acetyloxybutyl, 5-acetyloxypentyl, 6-acetyloxyhexyl, 2-acetyloxy-2-methylpropyl, 3-acetyloxy-3-methylbutyl, 4-acetyloxy-4-methylpentyl, 2-acetyloxy-2-ethylbutyl, propionyloxymethyl, 2-propionyloxyethyl, 3-propionyloxypropyl, 4-propionyloxybutyl, 5-propionyloxypentyl, 6-propionyloxyhexyl, 2-methyl-2-propionyloxypropyl, 3-methyl-3-propionyloxybutyl, 4-methyl-4-propionyloxypentyl, 2-ethyl-2-propionyloxybutyl, butyryloxymethyl, 2-butyryloxyethyl, 3-butyryloxypropyl, 4-butyryloxybutyl, 5-butyryloxypentyl, 6-butyryloxyhexyl, 2-butyryloxy-2-methylpropyl, 3-butyryloxy-3-methylbutyl, 4-butyryloxy-4-methylpentyl, 2-butyryloxy-2-ethylbutyl, acetylmethyl, 2-acetylethyl, 3-acetylpropyl, 4-acetylbutyl, 5-acetylpentyl, 6-acetylhexyl, 2-acetyl-2-methylpropyl, 3-acetyl-3-methylbutyl, 4-acetyl-4-methylpentyl, 2-acetyl-2-ethylbutyl,

propionylmethyl, 2-propionylethyl, 3-propionylpropyl, 4-propionylbutyl, 5-propionylpentyl, 6-propionylhexyl, 3-propionyl-3-methylbutyl, 4-propionyl-4-methylpentyl, 2-ethyl-2-propionylbutyl, butyrylmethyl, 2-butyrylethyl, 3-butyrylpropyl, 4-butyrylbutyl, 5-butyrylpentyl, 6-butyrylhexyl, 2-butyryl-2-methylpropyl, 3-butyryl-3-methylbutyl, 4-butyryl-4-methylpentyl, 2-butyryl-2-ethylbutyl, dimethylaminomethyl, 2-dimethylaminoethyl, 3-dimethylaminopropyl, 4-dimethylaminobutyl, diethylaminomethyl, 2-diethylaminoethyl, 3-diethylaminopropyl, 4-diethylaminobutyl, dipropylaminomethyl, 2-dipropylaminoethyl, 3-dipropylaminopropyl, 4-dipropylaminobutyl, dibutylaminomethyl, 2-dibutylaminoethyl, 3-dibutylaminopropyl, 4-dibutylaminobutyl, diisopropylaminomethyl, 2-diisopropylaminoethyl, 3-diisopropylaminopropyl, 4-diisopropylaminobutyl, cyclopropyl, 1-hydroxycyclopropyl, cyclobutyl, 1-hydroxycyclobutyl, cyclopropylmethyl, (1-hydroxycyclopropyl)methyl, cyclobutylmethyl, (1-hydroxycyclobutyl)methyl, cyclopropylhydroxymethyl, hydroxy(1-hydroxycyclopropyl)methyl, cyclobutylhydroxymethyl, hydroxy(1-hydroxycyclobutyl)methyl, 2-cyclopropylethyl, 2-(1-hydroxycyclopropyl)ethyl, 2-cyclobutylethyl, 2-(1-hydroxycyclobutyl)ethyl, 3-cyclopropylpropyl, 3-(1-hydroxycyclopropyl)propyl, 3-cyclobutylpropyl, 3-(1-hydroxycyclobutyl)propyl, 2-cyclopropyl-2-hydroxyethyl, 2-hydroxy-2-(1-hydroxycyclopropyl)ethyl,

2-cyclobutyl-2-hydroxyethyl, 2-hydroxy-2-(1-hydroxycyclobutyl)ethyl, 3-cyclopropyl-3-hydroxypropyl, 3-hydroxy-3-(1-hydroxycyclopropyl)propyl, 3-cyclobutyl-3-hydroxypropyl, 3-hydroxy-3-(1-hydroxycyclobutyl)propyl, 2-propenyl, 2-butenyl, 3-butenyl, 2-pentenyl, 3-pentenyl, 4-pentenyl, 2-hexenyl, 3-hexenyl, 4-hexenyl, 5-hexenyl, 2-methyl-2-propenyl, 2-methyl-2-butenyl, 3-methyl-2-butenyl, 2-methyl-3-butenyl, 3-methyl-3-butenyl, 2-methyl-2-pentenyl, 3-methyl-2-pentenyl, 4-methyl-2-pentenyl, 2-methyl-3-pentenyl, 3-methyl-3-pentenyl, 4-methyl-3-pentenyl, 2-methyl-4-pentenyl, 3-methyl-4-pentenyl, 4-methyl-4-pentenyl, 2,3-dimethyl-2-butenyl, ethynyl, 2-propynyl, 2-butynyl, 3-butynyl, 2-pentynyl, 3-pentynyl, 4-pentynyl, 2-methyl-3-butynyl, 2-hexynyl, 3-hexynyl, 4-hexynyl, 5-hexynyl, 4-methyl-2-pentynyl, 2-methyl-3-pentynyl, 2-methyl-4-pentynyl, 3-methyl-4-pentynyl, 2,2-dimethyl-3-butynyl, 1-hydroxy-2-propenyl, 1-hydroxy-2-butenyl, 2-hydroxy-3-butenyl, 1-hydroxy-2-pentenyl, 2-hydroxy-3-pentenyl, 3-hydroxy-4-pentenyl, 1-hydroxy-2-hexenyl, 2-hydroxy-3-hexenyl, 3-hydroxy-4-hexenyl, 4-hydroxy-5-hexenyl, 1-hydroxy-2-propynyl, 1-hydroxy-2-butynyl, 2-hydroxy-3-butynyl, 1-hydroxy-2-pentynyl, 2-hydroxy-3-pentynyl, 3-hydroxy-4-pentynyl, 1-hydroxy-2-hexynyl, 2-hydroxy-3-hexynyl, 3-hydroxy-4-hexynyl, 4-hydroxy-5-hexynyl,

phenyl, 2-fluorophenyl, 3-fluorophenyl, 4-fluorophenyl, 2,4-difluorophenyl, 2,6-difluorophenyl, 3,4-difluorophenyl, 2,4,6-trifluorophenyl, 2-chlorophenyl, 3-chlorophenyl, 4-chlorophenyl, 2,4-dichlorophenyl, 2,6-dichlorophenyl, 3,4-dichlorophenyl, 2,4,6-trichlorophenyl, 3-hydroxyphenyl, 4-hydroxyphenyl, 3-cyanophenyl, 4-cyanophenyl, 3-nitrophenyl, 4-nitrophenyl, 3-carboxyphenyl, 4-carboxyphenyl, 3-methylphenyl, 4-methylphenyl, 3-trifluoromethylphenyl, 4-trifluoromethylphenyl, 3-ethylphenyl, 4-ethylphenyl, 3-propylphenyl, 4-propylphenyl, 3-isopropylphenyl, 4-isopropylphenyl, 3-(1-hydroxy-1-methylethyl)phenyl, 4-(1-hydroxy-1-methylethyl)phenyl, 3-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)phenyl, 4-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)phenyl, 3-(1-carboxy-1-methylethyl)phenyl, 4-(1-carboxy-1-methylethyl)phenyl, 3-methoxyphenyl, 4-methoxyphenyl, 3-ethoxyphenyl, 4-ethoxyphenyl, 3-propoxyphenyl, 4-propoxyphenyl, 3-butoxyphenyl, 4-butoxyphenyl, 3-isopropoxyphenyl, 4-isopropoxyphenyl, 3-methoxycarbonylphenyl, 4-methoxycarbonylphenyl, 3-ethoxycarbonylphenyl, 4-ethoxycarbonylphenyl, 3-acetoxyphenyl, 4-acetoxyphenyl, 3-dimethylaminophenyl, 4-dimethylaminophenyl, 3-diethylaminophenyl, 4-diethylaminophenyl, 3-dipropylaminophenyl, 4-dipropylaminophenyl,

2-thienyl, 4-cyano-2-thienyl, 5-cyano-2-thienyl, 4-carboxy-2-thienyl, 5-carboxy-2-thienyl, 4-methyl-2-thienyl, 5-methyl-2-thienyl, 4-trifluoromethyl-2-thienyl, 5-trifluoromethyl-2-thienyl, 4-ethyl-2-thienyl, 5-ethyl-2-thienyl, 4-propyl-2-thienyl, 5-propyl-2-thienyl, 4-isopropyl-2-thienyl, 5-isopropyl-2-thienyl, 4-(1-hydroxy-1-methylethyl)-2-thienyl, 5-(1-hydroxy-1-methylethyl)-2-thienyl, 4-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-2-thienyl, 5-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-2-thienyl, 4-(1-carboxy-1-methylethyl)-2-thienyl, 5-(1-carboxy-1-methylethyl)-2-thienyl, 4-methoxycarbonyl-2-thienyl, 5-methoxycarbonyl-2-thienyl, 4-ethoxycarbonyl-2-thienyl, 5-ethoxycarbonyl-2-thienyl, 4-propoxycarbonyl-2-thienyl, 5-propoxycarbonyl-2-thienyl, 4-butoxycarbonyl-2-thienyl, 5-butoxycarbonyl-2-thienyl, 4-isopropoxycarbonyl-2-thienyl, 5-isopropoxycarbonyl-2-thienyl, 3-thienyl, 4-cyano-3-thienyl, 5-cyano-3-thienyl, 4-carboxy-3-thienyl, 5-carboxy-3-thienyl, 4-methyl-3-thienyl, 5-methyl-3-thienyl, 4-trifluoromethyl-3-thienyl, 5-trifluoromethyl-3-thienyl, 5-ethyl-3-thienyl, 5-propyl-3-thienyl, 5-isopropyl-3-thienyl, 5-(1-hydroxy-1-methylethyl)-3-thienyl, 5-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-3-thienyl, 5-(1-carboxy-1-methylethyl)-3-thienyl, 5-methoxycarbonyl-3-thienyl, 5-ethoxycarbonyl-3-thienyl,

4-thiazolyl, 2-cyano-4-thiazolyl, 2-carboxy-4-thiazolyl, 2-methyl-4-thiazolyl, 2-ethyl-4-thiazolyl, 2-propyl-4-thiazolyl, 2-isopropyl-4-thiazolyl, 2-trifluoromethyl-4-thiazolyl, 2-(1-hydroxy-1-methylethyl)-4-thiazolyl, 2-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-4-thiazolyl, 2-(1-carboxy-1-methylethyl)-4-thiazolyl, 2-methoxycarbonyl-4-thiazolyl, 2-ethoxycarbonyl-4-thiazolyl, 5-thiazolyl, 2-cyano-5-thiazolyl, 2-carboxy-5-thiazolyl, 2-methyl-5-thiazolyl, 2-ethyl-5-thiazolyl, 2-propyl-5-thiazolyl, 2-isopropyl-5-thiazolyl, 2-trifluoromethyl-5-thiazolyl, 2-(1-hydroxy-1-methylethyl)-5-thiazolyl, 2-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-5-thiazolyl, 2-(1-carboxy-1-methylethyl)-5-thiazolyl, 2-methoxycarbonyl-5-thiazolyl, 2-ethoxycarbonyl-5-thiazolyl, 2-propoxycarbonyl-5-thiazolyl, 2-isopropoxycarbonyl-5-thiazolyl, 4-pyrazolyl, 1-methyl-4-pyrazolyl, 1-ethyl-4-pyrazolyl, 3-pyrazolyl, 1-methyl-3-pyrazolyl, 1-ethyl-3-pyrazolyl, 6-cyano-2-pyridyl, 6-carboxy-2-pyridyl, 6-trifluoromethyl-2-pyridyl, 6-methoxy-2-pyridyl, 6-ethoxy-2-pyridyl, 6-methoxycarbonyl-2-pyridyl, 6-ethoxycarbonyl-2-pyridyl, 6-(1-hydroxy-1-methylethyl)-2-pyridyl, 6-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-2-pyridyl, 6-(1-carboxy-1-methylethyl)-2-pyridyl,

6-cyano-3-pyridyl, 6-carboxy-3-pyridyl, 6-trifluoromethyl-3-pyridyl, 6-methoxy-3-pyridyl, 6-ethoxy-3-pyridyl, 6-methoxycarbonyl-3-pyridyl, 6-ethoxycarbonyl-3-pyridyl, 6-(1-hydroxy-1-methylethyl)-3-pyridyl, 6-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-3-pyridyl, 6-(1-carboxy-1-methylethyl)-3-pyridyl, 2-cyano-3-pyridyl, 2-carboxy-3-pyridyl, 2-trifluoromethyl-3-pyridyl, 2-methoxy-3-pyridyl, 2-ethoxy-3-pyridyl, 2-propoxy-3-pyridyl, 2-methoxycarbonyl-3-pyridyl, 2-ethoxycarbonyl-3-pyridyl, 2-propoxycarbonyl-3-pyridyl, 2-(1-hydroxy-1-methylethyl)-3-pyridyl, 2-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-3-pyridyl, 2-(1-carboxy-1-methylethyl)-3-pyridyl, 2-cyano-4-pyridyl, 2-carboxy-4-pyridyl, 2-trifluoromethyl-4-pyridyl, 2-methoxy-4-pyridyl, 2-ethoxy-4-pyridyl, 2-propoxy-4-pyridyl, 2-methoxycarbonyl-4-pyridyl, 2-ethoxycarbonyl-4-pyridyl, 2-(1-hydroxy-1-methylethyl)-4-pyridyl, 2-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-4-pyridyl, 2-(1-carboxy-1-methylethyl)-4-pyridyl, benzyl, 2-fluorobenzyl, 3-fluorobenzyl, 4-fluorobenzyl, 2,4-difluorobenzyl, 2,6-difluorobenzyl, 3,4-difluorobenzyl, 2-chlorobenzyl, 3-chlorobenzyl, 4-chlorobenzyl, 2,4-dichlorobenzyl, 2,6-dichlorobenzyl, 3,4-dichlorobenzyl, 2-cyanobenzyl, 3-cyanobenzyl, 4-cyanobenzyl, 3-nitrobenzyl, 4-nitrobenzyl, 3-carboxybenzyl, 4-carboxybenzyl, 3-trifluoromethylbenzyl, 4-trifluoromethylbenzyl, 3-(1-hydroxy-1-methylethyl)benzyl, 4-(1-hydroxy-1-methylethyl)benzyl,

3-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)benzyl, 4-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)benzyl, 3-(1-carboxy-1-methylethyl)benzyl, 4-(1-carboxy-1-methylethyl)benzyl, 3-methoxybenzyl, 4-methoxybenzyl, 3-ethoxybenzyl, 4-ethoxybenzyl, 3-methoxycarbonylbenzyl, 4-methoxycarbonylbenzyl, 3-ethoxycarbonylbenzyl, 4-ethoxycarbonylbenzyl, 2-thienylmethyl, 4-cyano-2-thienylmethyl, 5-cyano-2-thienylmethyl, 4-carboxy-2-thienylmethyl, 5-carboxy-2-thienylmethyl, 4-methyl-2-thienylmethyl, 5-methyl-2-thienylmethyl, 4-trifluoromethyl-2-thienylmethyl, 5-trifluoromethyl-2-thienylmethyl, 4-(1-hydroxy-1-methylethyl)-2-thienylmethyl, 5-(1-hydroxy-1-methylethyl)-2-thienylmethyl, 4-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-2-thienylmethyl, 5-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-2-thienylmethyl, 4-(1-carboxy-1-methylethyl)-2-thienylmethyl, 5-(1-carboxy-1-methylethyl)-2-thienylmethyl, 3-thienylmethyl, 4-cyano-3-thienylmethyl, 5-cyano-3-thienylmethyl, 4-carboxy-3-thienylmethyl, 5-carboxy-3-thienylmethyl, 4-methyl-3-thienylmethyl, 5-methyl-3-thienylmethyl, 4-trifluoromethyl-3-thienylmethyl, 5-trifluoromethyl-3-thienylmethyl, 5-ethyl-3-thienylmethyl, 5-(1-hydroxy-1-methylethyl)-3-thienylmethyl, 5-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-3-thienylmethyl, 5-(1-carboxy-1-methylethyl)-3-thienylmethyl, 5-methoxycarbonyl-3-thienylmethyl, 4-thiazolylmethyl, 2-cyano-4-thiazolylmethyl, 2-carboxy-4-thiazolylmethyl, 2-methyl-4-thiazolylmethyl, 2-ethyl-4-thiazolylmethyl, 2-propyl-4-thiazolylmethyl, 2-isopropyl-4-thiazolylmethyl, 2-trifluoromethyl-4-thiazolylmethyl, 2-(1-hydroxy-1-methylethyl)-4-thiazolylmethyl, 2-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-4-thiazolylmethyl, 2-(1-carboxy-1-methylethyl)-4-thiazolylmethyl, 2-methoxycarbonyl-4-thiazolylmethyl,

5-thiazolylmethyl, 2-cyano-5-thiazolylmethyl, 2-carboxy-5-thiazolylmethyl, 2-methyl-5-thiazolylmethyl, 2-ethyl-5-thiazolylmethyl, 2-trifluoromethyl-5-thiazolylmethyl, 2-(1-hydroxy-1-methylethyl)-5-thiazolylmethyl, 2-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-5-thiazolylmethyl, 2-(1-carboxy-1-methylethyl)-5-thiazolylmethyl, 2-methoxycarbonyl-5-thiazolylmethyl, 4-pyrazolylmethyl, 6-cyano-2-pyridylmethyl, 6-carboxy-2-pyridylmethyl, 6-trifluoromethyl-2-pyridylmethyl, 6-methoxy-2-pyridylmethyl, 6-ethoxy-2-pyridylmethyl, 6-methoxycarbonyl-2-pyridylmethyl, 6-ethoxycarbonyl-2-pyridylmethyl, 6-(1-hydroxy-1-methylethyl)-2-pyridylmethyl, 6-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-2-pyridylmethyl, 6-(1-carboxy-1-methylethyl)-2-pyridylmethyl, 6-cyano-3-pyridylmethyl, 6-carboxy-3-pyridylmethyl, 6-trifluoromethyl-3-pyridylmethyl, 6-methoxy-3-pyridylmethyl, 6-ethoxy-3-pyridylmethyl, 6-methoxycarbonyl-3-pyridylmethyl, 6-ethoxycarbonyl-3-pyridylmethyl, 6-(1-hydroxy-1-methylethyl)-3-pyridylmethyl, 6-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-3-pyridylmethyl, 6-(1-carboxy-1-methylethyl)-3-pyridylmethyl, 2-cyano-3-pyridylmethyl, 2-carboxy-3-pyridylmethyl, 2-trifluoromethyl-3-pyridylmethyl, 2-methoxy-3-pyridylmethyl, 2-ethoxy-3-pyridylmethyl, 2-propoxy-3-pyridylmethyl, 2-methoxycarbonyl-3-pyridylmethyl, 2-ethoxycarbonyl-3-pyridylmethyl, 2-propoxycarbonyl-3-pyridylmethyl, 2-(1-hydroxy-1-methylethyl)-3-pyridylmethyl, 2-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-3-pyridylmethyl, 2-(1-carboxy-1-methylethyl)-3-pyridylmethyl,

2-cyano-4-pyridylmethyl, 2-carboxy-4-pyridylmethyl, 2-trifluoromethyl-4-pyridylmethyl, 2-methoxy-4-pyridylmethyl, 2-ethoxy-4-pyridylmethyl, 2-propoxy-4-pyridylmethyl, 2-methoxycarbonyl-4-pyridylmethyl, 2-ethoxycarbonyl-4-pyridylmethyl, 2-(1-hydroxy-1-methylethyl)-4-pyridyl, 2-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-4-pyridylmethyl, 2-(1-carboxy-1-methylethyl)-4-pyridylmethyl, phenethyl, 2-fluorophenethyl, 3-fluorophenethyl, 4-fluorophenethyl, 3-chlorophenethyl, 3-cyanophenethyl, 3-carboxyphenethyl, 3-methoxyphenethyl, 2-(2-thienyl)ethyl, 2-(3-thienyl)ethyl, 2-(4-thiazolyl)ethyl, 2-(5-thiazolyl)ethyl, 2-(4-pyrazolyl)ethyl, 2-(6-cyano-2-pyridyl)ethyl, 2-(6-carboxy-2-pyridyl)ethyl, 2-(6-methoxy-2-pyridyl)ethyl, 2-(6-cyano-3-pyridyl)ethyl, 2-(6-carboxy-3-pyridyl)ethyl, 2-(6-methoxy-3-pyridyl)ethyl, 2-(2-cyano-3-pyridyl)ethyl, 2-(2-carboxy-3-pyridyl)ethyl, 2-(2-methoxy-3-pyridyl)ethyl, hydroxyphenylmethyl, (2-fluorophenyl)hydroxymethyl, (3-fluorophenyl)hydroxymethyl, (4-fluorophenyl)hydroxymethyl, (3-chlorophenyl)hydroxymethyl, (3,4-difluorophenyl)hydroxymethyl, (2,4-difluorophenyl)hydroxymethyl, (3-cyanophenyl)hydroxymethyl, hydroxy(3-trifluoromethylphenyl)methyl or hydroxy(2-thienyl)methyl group,

more preferably a hydrogen atom, chlorine atom, bromine atom, methyl, ethyl, propyl, isopropyl, butyl, isobutyl, pentyl, isopentyl, neopentyl, hexyl, 2-ethylbutyl, 2,2-dimethylbutyl, 3,3-dimethylbutyl, heptyl, 2,2-dimethylpentyl, 3,3-dimethylpentyl, 4,4-dimethylpentyl, octyl, 4-ethylhexyl, 2,2-dimethylhexyl, 3,3-dimethylhexyl, 4,4-dimethylhexyl, 5,5-dimethylhexyl, 2-propylpentyl, 2,2,3,3-tetramethylbutyl, 2,2,2-trifluoroethyl, 3,3,3-trifluoropropyl, 2-chloroethyl, hydroxyethyl, 2-hydroxyethyl, 3-hydroxypropyl, 4-hydroxybutyl, 5-hydroxypentyl, 6-hydroxyhexyl, 2-hydroxy-2-methylpropyl, 3-hydroxy-3-methylbutyl, 4-hydroxy-4-methylpentyl, 2-ethyl-2-hydroxybutyl, 2-cyano-2-methylpropyl, 3-cyano-3-methylbutyl, 4-cyano-4-methylpentyl, 2-cyano-2-ethylbutyl, 2-carboxy-2-methylpropyl, 3-carboxy-3-methylbutyl, 4-carboxy-4-methylpentyl, 2-carboxy-2-ethylbutyl, methoxymethyl, 2-methoxyethyl, 3-methoxypropyl, 4-methoxybutyl, 5-methoxypentyl, 6-methoxyhexyl, 2-methoxy-2-methylpropyl, 3-methoxy-3-methylbutyl, 4-methoxy-4-methylpentyl, 2-ethyl-2-methoxybutyl, ethoxymethyl, 2-ethoxyethyl, 3-ethoxypropyl, 4-ethoxybutyl, 5-ethoxypentyl, 6-ethoxyhexyl, 2-ethoxy-2-methylpropyl, 3-ethoxy-3-methylbutyl, 4-ethoxy-4-methylpentyl, 2-ethoxy-2-ethylbutyl, propoxymethyl, 2-propoxyethyl, 3-propoxypropyl, 4-propoxybutyl, 2-methyl-2-propoxypropyl, 3-methyl-3-propoxybutyl, 4-methyl-4-propoxypentyl, 2-ethyl-2-propoxybutyl,

butoxymethyl, 2-butoxyethyl, 3-butoxypropyl, 4-butoxybutyl, 2-butoxy-2-methylpropyl, 3-butoxy-3-methylbutyl, 4-butoxy-4-methylpentyl, 2-butoxy-2-ethylbutyl, isopropoxymethyl, 2-isopropoxyethyl, 3-isopropoxypropyl, 4-isopropoxybutyl, isobutoxymethyl, sec-butoxymethyl, tert-butoxymethyl, 1-ethylpropoxymethyl, 2-fluoroethoxymethyl, 2-(2-fluoroethoxy)ethyl, 3-(2-fluoroethoxy)propyl, 4-(2-fluoroethoxy)butyl, 5-(2-fluoroethoxy)pentyl, 6-(2-fluoroethoxy)hexyl, 2-(2-fluoroethoxy)-2-methylpropyl, 3-(2-fluoroethoxy)-3-methylbutyl, 4-(2-fluoroethoxy)-4-methylpentyl, 2-ethyl-2-(2-fluoroethoxy)butyl, (2,2,2-trifluoroethoxy)methyl, cyclopropoxymethyl, cyclobutoxymethyl, 2-cyclobutoxyethyl, 3-cyclobutoxypropyl, 4-cyclobutoxybutyl, 5-cyclobutoxypentyl, 6-cyclobutoxyhexyl, 2-cyclobutoxy-2-methylpropyl, 3-cyclobutoxy-3-methylbutyl, 4-cyclobutoxy-4-methylpentyl, 2-cyclobutoxy-2-ethylbutyl, cyclopropylmethoxymethyl, 2-cyclopropylmethoxyethyl, 3-cyclopropylmethoxypropyl, 4-cyclopropylmethoxybutyl, 5-cyclopropylmethoxypentyl, 6-cyclopropylmethoxyhexyl, 2-cyclopropylmethoxy-2-methylpropyl, 3-cyclopropylmethoxy-3-methylbutyl, 4-cyclopropylmethoxy-4-methylpentyl, 2-cyclopropylmethoxy-2-ethylbutyl, cyclobutylmethoxymethyl, methoxycarbonylmethyl, 2-methoxycarbonylethyl, 3-methoxycarbonylpropyl, 4-methoxycarbonylbutyl, 2-methoxycarbonyl-2-methylpropyl, 3-methoxycarbonyl-3-methylbutyl, 4-methoxycarbonyl-4-methylpentyl, 2-ethyl-2-methoxycarbonylbutyl, ethoxycarbonylmethyl, 2-ethoxycarbonylethyl, 3-ethoxycarbonylpropyl, 4-ethoxycarbonylbutyl, 2-ethoxycarbonyl-2-methylpropyl, 3-ethoxycarbonyl-3-methylbutyl, 4-ethoxycarbonyl-4-methylpentyl, 2-ethoxycarbonyl-2-ethylbutyl, propoxycarbonylmethyl, 2-propoxycarbonylethyl, 3-propoxycarbonylpropyl, 4-propoxycarbonylbutyl, 2-methyl-2-propoxycarbonylpropyl, 3-methyl-3-propoxycarbonylbutyl, 4-methyl-4-propoxycarbonylpentyl, 2-ethyl-2-propoxycarbonylbutyl, butoxycarbonylmethyl, 2-butoxycarbonylethyl, 3-butoxycarbonylpropyl, 4-butoxycarbonylbutyl, 2-butoxycarbonyl-2-methylpropyl, 3-butoxycarbonyl-3-methylbutyl, 4-butoxycarbonyl-4-methylpentyl, 2-butoxycarbonyl-2-ethylbutyl, isopropoxycarbonylmethyl, 2-isopropoxycarbonylethyl, 3-isopropoxycarbonylpropyl, 4-isopropoxycarbonylbutyl, 2-isopropoxycarbonyl-2-methylpropyl, 3-isopropoxycarbonyl-3-methylbutyl, 4-isopropoxycarbonyl-4-methylpentyl, 2-ethyl-2-isopropoxycarbonylbutyl, isobutoxycarbonylmethyl, 2-isobutoxycarbonylethyl, 3-isobutoxycarbonylpropyl, 4-isobutoxycarbonylbutyl, acetyloxymethyl, 2-acetyloxyethyl, 3-acetyloxypropyl, 4-acetyloxybutyl, 5-acetyloxypentyl, 6-acetyloxyhexyl, 2-acetyloxy-2-methylpropyl, 3-acetyloxy-3-methylbutyl, 4-acetyloxy-4-methylpentyl, 2-acetyloxy-2-ethylbutyl, propionyloxymethyl, 2-propionyloxyethyl, 3-propionyloxypropyl, 4-propionyloxybutyl, 5-propionyloxypentyl, acetylmethyl, 2-acetylethyl, 3-acetylpropyl, 4-acetylbutyl, 5-acetylpentyl, 6-acetylhexyl, 2-acetyl-2-methylpropyl, 3-acetyl-3-methylbutyl, 4-acetyl-4-methylpentyl, 2-acetyl-2-ethylbutyl,

propionylmethyl, 2-propionylethyl, 3-propionylpropyl, 4-propionylbutyl, 5-propionylpentyl, dimethylaminomethyl, 2-dimethylaminoethyl, diethylaminomethyl, 2-diethylaminoethyl, dipropylaminomethyl, 2-dipropylaminoethyl, 2-dibutylaminomethyl, 3-dibutylaminoethyl, diisopropylaminomethyl, 2-diisopropylaminoethyl, cyclopropyl, 1-hydroxycyclopropyl, cyclobutyl, 1-hydroxycyclobutyl, cyclopropylmethyl, (1-hydroxycyclopropyl)methyl, cyclobutylmethyl, (1-hydroxycyclobutyl)methyl, cyclopropylhydroxymethyl, hydroxy(1-hydroxycyclopropyl)methyl, cyclobutylhydroxymethyl, hydroxy(1-hydroxycyclobutyl)methyl, 2-cyclopropylethyl, 2-(1-hydroxycyclopropyl)ethyl, 2-cyclobutylethyl, 2-(1-hydroxycyclobutyl)ethyl, 2-propenyl, 2-butenyl, 2-pentenyl, 2-hexenyl, 2-methyl-2-propenyl, 2-methyl-2-butenyl, 3-methyl-2-butenyl, 2-methyl-2-pentenyl, 3-methyl-2-pentenyl, 4-methyl-2-pentenyl, 2,3-dimethyl-2-butenyl, ethynyl, 2-propynyl, 2-butynyl, 2-pentynyl, 2-hexynyl, 4-methyl-2-pentynyl, 1-hydroxy-2-propenyl, 1-hydroxy-2-butenyl, 1-hydroxy-2-pentenyl, 1-hydroxy-2-hexenyl, 1-hydroxy-2-propynyl, 1-hydroxy-2-butynyl, 1-hydroxy-2-pentynyl, 1-hydroxy-2-hexynyl, phenyl, 2-fluorophenyl, 3-fluorophenyl, 4-fluorophenyl, 2,4-difluorophenyl, 2,6-difluorophenyl, 3,4-difluorophenyl, 2-chlorophenyl, 3-chlorophenyl, 4-chlorophenyl, 2,4-dichlorophenyl, 2,6-dichlorophenyl, 3,4-dichlorophenyl, 3-cyanophenyl, 4-cyanophenyl, 3-nitrophenyl, 4-nitrophenyl, 3-carboxyphenyl, 4-carboxyphenyl, 3-trifluoromethylphenyl, 4-trifluoromethylphenyl, 3-(1-hydroxy-1-methylethyl)phenyl,

4-(1-hydroxy-1-methylethyl)phenyl, 3-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)phenyl, 4-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)phenyl, 3-(1-carboxy-1-methylethyl)phenyl, 4-(1-carboxy-1-methylethyl)phenyl, 3-methoxyphenyl, 4-methoxyphenyl, 3-ethoxyphenyl, 4-ethoxyphenyl, 3-methoxycarbonylphenyl, 4-methoxycarbonylphenyl, 3-ethoxycarbonylphenyl, 4-ethoxycarbonylphenyl, 2-thienyl, 4-cyano-2-thienyl, 5-cyano-2-thienyl, 4-carboxy-2-thienyl, 5-carboxy-2-thienyl, 4-methyl-2-thienyl, 5-methyl-2-thienyl, 4-trifluoromethyl-2-thienyl, 5-trifluoromethyl-2-thienyl, 4-(1-hydroxy-1-methylethyl)-2-thienyl, 5-(1-hydroxy-1-methylethyl)-2-thienyl, 4-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-2-thienyl, 5-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-2-thienyl, 4-(1-carboxy-1-methylethyl)-2-thienyl, 5-(1-carboxy-1-methylethyl)-2-thienyl, 3-thienyl, 4-cyano-3-thienyl, 5-cyano-3-thienyl, 4-carboxy-3-thienyl, 5-carboxy-3-thienyl, 4-methyl-3-thienyl, 5-methyl-3-thienyl, 4-trifluoromethyl-3-thienyl, 5-trifluoromethyl-3-thienyl, 5-ethyl-3-thienyl, 5-(1-hydroxy-1-methylethyl)-3-thienyl, 5-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-3-thienyl, 5-(1-carboxy-1-methylethyl)-3-thienyl, 5-methoxycarbonyl-3-thienyl,

4-thiazolyl, 2-cyano-4-thiazolyl, 2-carboxy-4-thiazolyl, 2-methyl-4-thiazolyl, 2-ethyl-4-thiazolyl, 2-propyl-4-thiazolyl, 2-isopropyl-4-thiazolyl, 2-trifluoromethyl-4-thiazolyl, 2-(1-hydroxy-1-methylethyl)-4-thiazolyl, 2-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-4-thiazolyl, 2-(1-carboxy-1-methylethyl)-4-thiazolyl, 2-methoxycarbonyl-4-thiazolyl, 5-thiazolyl, 2-cyano-5-thiazolyl, 2-carboxy-5-thiazolyl, 2-methyl-5-thiazolyl, 2-ethyl-5-thiazolyl, 2-trifluoromethyl-5-thiazolyl, 2-(1-hydroxy-1-methylethyl)-5-thiazolyl, 2-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-5-thiazolyl, 2-(1-carboxy-1-methylethyl)-5-thiazolyl, 2-methoxycarbonyl-5-thiazolyl, 2-ethoxycarbonyl-5-thiazolyl, 2-propoxycarbonyl-5-thiazolyl, 2-isopropoxycarbonyl-5-thiazolyl, 4-pyrazolyl, 6-cyano-2-pyridyl, 6-carboxy-2-pyridyl, 6-trifluoromethyl-2-pyridyl, 6-methoxy-2-pyridyl, 6-ethoxy-2-pyridyl, 6-methoxycarbonyl-2-pyridyl, 6-ethoxycarbonyl-2-pyridyl, 6-(1-hydroxy-1-methylethyl)-2-pyridyl, 6-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-2-pyridyl, 6-(1-carboxy-1-methylethyl)-2-pyridyl,

6-cyano-3-pyridyl, 6-carboxy-3-pyridyl, 6-trifluoromethyl-3-pyridyl, 6-methoxy-3-pyridyl, 6-ethoxy-3-pyridyl, 6-methoxycarbonyl-3-pyridyl, 6-ethoxycarbonyl-3-pyridyl, 6-(1-hydroxy-1-methylethyl)-3-pyridyl, 6-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-3-pyridyl, 6-(1-carboxy-1-methylethyl)-3-pyridyl, 2-cyano-3-pyridyl, 2-carboxy-3-pyridyl, 2-trifluoromethyl-3-pyridyl, 2-methoxy-3-pyridyl, 2-ethoxy-3-pyridyl, 2-propoxy-3-pyridyl, 2-methoxycarbonyl-3-pyridyl, 2-ethoxycarbonyl-3-pyridyl, 2-propoxycarbonyl-3-pyridyl, 2-(1-hydroxy-1-methylethyl)-3-pyridyl, 2-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-3-pyridyl, 2-(1-carboxy-1-methylethyl)-3-pyridyl, 2-cyano-4-pyridyl, 2-carboxy-4-pyridyl, 2-trifluoromethyl-4-pyridyl, 2-methoxy-4-pyridyl, 2-ethoxy-4-pyridyl, 2-propoxy-4-pyridyl, 2-methoxycarbonyl-4-pyridyl, 2-ethoxycarbonyl-4-pyridyl, 2-(1-hydroxy-1-methylethyl)-4-pyridyl, 2-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-4-pyridyl, 2-(1-carboxy-1-methylethyl)-4-pyridyl, benzyl, 2-fluorobenzyl, 3-fluorobenzyl, 4-fluorobenzyl, 2,4-difluorobenzyl, 3,4-difluorobenzyl, 2-chlorobenzyl, 3-chlorobenzyl, 4-chlorobenzyl, 2,4-dichlorobenzyl, 3,4-dichlorobenzyl, 2-cyanobenzyl, 3-cyanobenzyl, 4-cyanobenzyl, 3-nitrobenzyl, 3-carboxybenzyl, 4-carboxybenzyl, 3-trifluoromethylbenzyl, 4-trifluoromethylbenzyl, 3-(1-hydroxy-1-methylethyl)benzyl, 4-(1-hydroxy-1-methylethyl)benzyl, 3-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)benzyl, 4-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)benzyl, 4-(1-carboxy-1-methylethyl)benzyl, 3-methoxybenzyl, 4-methoxybenzyl, 3-methoxycarbonylbenzyl, 4-methoxycarbonylbenzyl,

2-thienylmethyl, 5-cyano-2-thienylmethyl, 5-carboxy-2-thienylmethyl, 5-methyl-2-thienylmethyl, 5-trifluoromethyl-2-thienylmethyl, 5-(1-hydroxy-1-methylethyl)-2-thienylmethyl, 5-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-2-thienylmethyl, 4-(1-carboxy-1-methylethyl)-2-thienylmethyl, 3-thienylmethyl, 5-cyano-3-thienylmethyl, 5-carboxy-3-thienylmethyl, 5-methyl-3-thienylmethyl, 5-trifluoromethyl-3-thienylmethyl, 5-(1-hydroxy-1-methylethyl)-3-thienylmethyl, 5-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-3-thienylmethyl, 4-thiazolylmethyl, 2-cyano-4-thiazolylmethyl, 2-carboxy-4-thiazolylmethyl, 2-methyl-4-thiazolylmethyl, 2-trifluoromethyl-4-thiazolylmethyl, 2-(1-hydroxy-1-methylethyl)-4-thiazolylmethyl, 2-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-4-thiazolylmethyl, 5-thiazolylmethyl, 2-cyano-5-thiazolylmethyl, 2-carboxy-5-thiazolylmethyl, 2-methyl-5-thiazolylmethyl, 2-trifluoromethyl-5-thiazolylmethyl, 2-(1-hydroxy-1-methylethyl)-5-thiazolylmethyl, 2-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-5-thiazolylmethyl, 4-pyrazolylmethyl, 6-cyano-2-pyridylmethyl, 6-carboxy-2-pyridylmethyl, 6-trifluoromethyl-2-pyridylmethyl, 6-methoxy-2-pyridylmethyl, 6-(1-hydroxy-1-methylethyl)-2-pyridylmethyl, 6-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-2-pyridylmethyl,

6-cyano-3-pyridylmethyl, 6-carboxy-3-pyridylmethyl, 6-trifluoromethyl-3-pyridylmethyl, 6-methoxy-3-pyridylmethyl, 6-(1-hydroxy-1-methylethyl)-3-pyridylmethyl, 6-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-3-pyridylmethyl, 2-cyano-3-pyridylmethyl, 2-carboxy-3-pyridylmethyl, 2-trifluoromethyl-3-pyridylmethyl, 2-methoxy-3-pyridylmethyl, 2-(1-hydroxy-1-methylethyl)-3-pyridylmethyl, 2-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-3-pyridylmethyl, 2-cyano-4-pyridylmethyl, 2-carboxy-4-pyridylmethyl, 2-trifluoromethyl-4-pyridylmethyl, 2-methoxy-4-pyridylmethyl, 2-(1-hydroxy-1-methylethyl)-4-pyridyl, 2-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-4-pyridylmethyl, phenethyl, 2-fluorophenethyl, 3-fluorophenethyl, 4-fluorophenethyl, 3-chlorophenethyl, 3-cyanophenethyl, 3-carboxyphenethyl, 3-methoxyphenethyl, 2-(2-thienyl)ethyl, 2-(3-thienyl)ethyl, 2-(6-cyano-2-pyridyl)ethyl, 2-(6-methoxy-2-pyridyl)ethyl, 2-(6-cyano-3-pyridyl)ethyl, 2-(6-methoxy-3-pyridyl)ethyl, 2-(2-cyano-3-pyridyl)ethyl, 2-(2-methoxy-3-pyridyl)ethyl, hydroxyphenylmethyl, (2-fluorophenyl)hydroxymethyl, (3-fluorophenyl)hydroxymethyl, (4-fluorophenyl)hydroxymethyl, (3,4-difluorophenyl)hydroxymethyl or hydroxy(2-thienyl)methyl group,

more preferably a hydrogen atom, chlorine atom, bromine atom, methyl, ethyl, propyl, isopropyl, butyl, isobutyl, pentyl, isopentyl, neopentyl, hexyl, 2-ethylbutyl, 2,2-dimethylbutyl, 3,3-dimethylbutyl, 2,2,2-trifluoroethyl, 3,3,3-trifluoropropyl, 2-chloroethyl, hydroxymethyl, 2-hydroxy-2-methylpropyl, 3-hydroxy-3-methylbutyl, 4-hydroxy-4-methylpentyl, 2-ethyl-2-hydroxybutyl, 2-cyano-2-methylpropyl, 3-cyano-3-methylbutyl, 2-carboxy-2-methylpropyl, 3-carboxy-3-methylbutyl, 4-carboxy-4-methylpentyl, methoxymethyl, ethoxymethyl, isopropoxymethyl, 2-methoxyethyl, 2-ethoxyethyl, 2-isopropoxyethyl, isobutoxymethyl, sec-butoxymethyl, tert-butoxymethyl, 1-ethylpropoxymethyl, 2-fluoroethoxymethyl, cyclobutoxymethyl, cyclopropylmethoxymethyl, dimethylaminomethyl, cyclopropyl, 1-hydroxycyclopropyl, cyclobutyl, 1-hydroxycyclobutyl, cyclopropylmethyl, (1-hydroxycyclopropyl)methyl, cyclobutylmethyl, (1-hydroxycyclobutyl)methyl, cyclopropylhydroxymethyl, hydroxy(1-hydroxycyclopropyl)methyl, cyclobutylhydroxymethyl, hydroxy(1-hydroxycyclobutyl)methyl, 2-cyclopropylethyl, 2-(1-hydroxycyclopropyl)ethyl, 2-cyclobutylethyl, 2-(1-hydroxycyclobutyl)ethyl, 2-propenyl, 2-butenyl, 2-methyl-2-propenyl, 2-methyl-2-butenyl, 3-methyl-2-butenyl, 2,3-dimethyl-2-butenyl, ethynyl, 2-propynyl, 2-butynyl, 4-methyl-2-pentynyl, 1-hydroxy-2-propenyl, 1-hydroxy-2-butenyl, 1-hydroxy-2-propynyl, 1-hydroxy-2-butynyl,

phenyl, 2-fluorophenyl, 4-fluorophenyl, 2,4-difluorophenyl, 2-chlorophenyl, 4-chlorophenyl, 4-cyanophenyl, 4-nitrophenyl, 4-carboxyphenyl, 4-trifluoromethylphenyl, 3-methoxyphenyl, 4-methoxyphenyl, 4-methoxycarbonylphenyl, 2-thienyl, 5-cyano-2-thienyl, 5-carboxy-2-thienyl, 5-methyl-2-thienyl, 5-trifluoromethyl-2-thienyl, 3-thienyl, 5-cyano-3-thienyl, 5-carboxy-3-thienyl, 5-methyl-3-thienyl, 5-trifluoromethyl-3-thienyl, 4-thiazolyl, 2-cyano-4-thiazolyl, 2-carboxy-4-thiazolyl, 2-methyl-4-thiazolyl, 2-trifluoromethyl-4-thiazolyl, 2-(1-hydroxy-1-methylethyl)-4-thiazolyl, 2-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-4-thiazolyl, 5-thiazolyl, 2-cyano-5-thiazolyl, 2-carboxy-5-thiazolyl, 2-methyl-5-thiazolyl, 2-trifluoromethyl-5-thiazolyl, 2-(1-hydroxy-1-methylethyl)-5-thiazolyl, 2-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-5-thiazolyl, 4-pyrazolyl, 6-cyano-2-pyridyl, 6-carboxy-2-pyridyl, 6-trifluoromethyl-2-pyridyl, 6-methoxy-2-pyridyl, 6-(1-hydroxy-1-methylethyl)-2-pyridyl, 6-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-2-pyridyl, 6-cyano-3-pyridyl, 6-carboxy-3-pyridyl, 6-trifluoromethyl-3-pyridyl, 6-methoxy-3-pyridyl, 6-(1-hydroxy-1-methylethyl)-3-pyridyl, 6-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-3-pyridyl, 2-cyano-4-pyridyl, 2-carboxy-4-pyridyl, 2-trifluoromethyl-4-pyridyl, 2-methoxy-4-pyridyl, 2-(1-hydroxy-1-methylethyl)-4-pyridyl, 2-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-4-pyridyl, benzyl, 2-fluorobenzyl, 3-fluorobenzyl, 4-fluorobenzyl, 2,4-difluorobenzyl, 3,4-difluorobenzyl, 2-chlorobenzyl, 3-chlorobenzyl, 2-cyanobenzyl, 3-cyanobenzyl, 3-carboxybenzyl, 4-carboxybenzyl, 3-trifluoromethylbenzyl, 4-methoxybenzyl, 3-methoxycarbonylbenzyl,

2-thienylmethyl, 5-cyano-2-thienylmethyl, 5-carboxy-2-thienylmethyl, 5-trifluoromethyl-2-thienylmethyl, 3-thienylmethyl, 5-cyano-3-thienylmethyl, 5-carboxy-3-thienylmethyl, S-trifluoromethyl-3-thienylmethyl, 4-thiazolylmethyl, 2-cyano-4-thiazolylmethyl, 2-carboxy-4-thiazolylmethyl, 2-(1-hydroxy-1-methylethyl)-4-thiazolylmethyl, 2-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-4-thiazolylmethyl, 2-cyano-5-thiazolylmethyl, 2-carboxy-5-thiazolylmethyl, 2-(1-hydroxy-1-methylethyl)-5-thiazolylmethyl, 2-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-5-thiazolylmethyl, 6-cyano-2-pyridylmethyl, 6-carboxy-2-pyridylmethyl, 6-methoxy-2-pyridylmethyl, 6-(1-hydroxy-1-methylethyl)-2-pyridylmethyl, 6-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-2-pyridylmethyl, 6-cyano-3-pyridylmethyl, 6-carboxy-3-pyridylmethyl, 6-methoxy-3-pyridylmethyl, 6-(1-hydroxy-1-methylethyl)-3-pyridylmethyl, 6-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-3-pyridylmethyl, 2-cyano-3-pyridylmethyl, 2-carboxy-3-pyridylmethyl, 2-methoxy-3-pyridylmethyl, 2-(1-hydroxy-1-methylethyl)-3-pyridylmethyl, 2-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-3-pyridylmethyl, 2-cyano-4-pyridylmethyl, 2-carboxy-4-pyridylmethyl, 2-methoxy-4-pyridylmethyl, 2-(1-hydroxy-1-methylethyl)-4-pyridyl, 2-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-4-pyridylmethyl, phenethyl, 2-fluorophenethyl, 3-fluorophenethyl, 4-fluorophenethyl, 3-cyanophenethyl, 2-(2-thienyl)ethyl, 2-(6-cyano-2-pyridyl)ethyl, 2-(6-cyano-3-pyridyl)ethyl, 2-(2-cyano-3-pyridyl)ethyl, hydroxyphenylmethyl, (3-fluorophenyl)hydroxymethyl, (4-fluorophenyl)hydroxymethyl or hydroxy(2-thienyl)methyl group,

further more preferably a hydrogen atom, chlorine atom, bromine atom, methyl, ethyl, propyl, isopropyl, butyl, isobutyl, pentyl, isopentyl, neopentyl, hexyl, 2-ethylbutyl, 2,2,2-trifluoroethyl, 3,3,3-trifluoropropyl, 2-chloroethyl, hydroxymethyl, methoxymethyl, ethoxymethyl, isopropoxymethyl, 2-methoxyethyl, 2-ethoxyethyl, 2-isopropoxyethyl, isobutoxymethyl, sec-butoxymethyl, tert-butoxymethyl, 1-ethylpropoxymethyl, 2-fluoroethoxymethyl, cyclobutoxymethyl, cyclopropylmethoxymethyl, dimethylaminomethyl, cyclopropyl, cyclobutyl, cyclopropylmethyl, cyclobutylmethyl, cyclopropylhydroxymethyl, cyclobutylhydroxymethyl, 2-cyclopropylethyl, 2-cyclobutylethyl, 2-propenyl, 2-butenyl, 2-methyl-2-propenyl, 2-methyl-2-butenyl, 3-methyl-2-butenyl, 2,3-dimethyl-2-butenyl, ethynyl, 2-propynyl, 2-butynyl, 4-methyl-2-pentynyl, 1-hydroxy-2-propenyl, phenyl, 2-fluorophenyl, 4-fluorophenyl, 2,4-difluorophenyl, 2-chlorophenyl, 4-chlorophenyl, 4-cyanophenyl, 2-thienyl, 3-thienyl, 4-thiazolyl, 5-thiazolyl, 4-pyrazolyl, 6-methoxy-2-pyridyl, 6-methoxy-3-pyridyl, benzyl, 2-fluorobenzyl, 3-fluorobenzyl, 4-fluorobenzyl, 2,4-difluorobenzyl, 3,4-difluorobenzyl, 2-chlorobenzyl, 3-chlorobenzyl, 2-cyanobenzyl, 3-cyanobenzyl, 3-carboxybenzyl, 4-carboxybenzyl, 2-thienylmethyl, 5-cyano-2-thienylmethyl, 5-carboxy-2-thienylmethyl, 3-thienylmethyl, 5-cyano-3-thienylmethyl, 5-carboxy-3-thienylmethyl, 2-carboxy-4-thiazolylmethyl, 6-cyano-2-pyridylmethyl, 6-carboxy-2-pyridylmethyl, 6-methoxy-2-pyridylmethyl, 6-cyano-3-pyridylmethyl, 6-carboxy-3-pyridylmethyl, 6-methoxy-3-pyridylmethyl, 2-cyano-3-pyridylmethyl, 2-carboxy-3-pyridylmethyl, 2-cyano-4-pyridylmethyl, 2-carboxy-4-pyridylmethyl, phenethyl, 2-fluorophenethyl, 3-fluorophenethyl, 4-fluorophenethyl, 3-cyanophenethyl, 2-(2-thienyl)ethyl, 2-(6-cyano-2-pyridyl)ethyl, 2-(6-cyano-3-pyridyl)ethyl, 2-(2-cyano-3-pyridyl)ethyl, hydroxyphenylmethyl, (2-fluorophenyl)hydroxymethyl, (3-fluorophenyl)hydroxymethyl or (4-fluorophenyl)hydroxymethyl group,

particularly preferably a hydrogen atom, chlorine atom, bromine atom, methyl, ethyl, propyl, isopropyl, butyl, isobutyl, pentyl, isopentyl, hexyl, 2-ethylbutyl, 2,2,2-trifluoroethyl, 3,3,3-trifluoropropyl, 2-chloroethyl, hydroxymethyl, methoxymethyl, ethoxymethyl, isopropoxymethyl, 2-methoxyethyl, 2-ethoxyethyl, 2-isopropoxyethyl, isobutoxymethyl, sec-butoxymethyl, tert-butoxymethyl, 1-ethylpropoxymethyl, 2-fluoroethoxymethyl, cyclobutoxymethyl, cyclopropylmethoxymethyl, dimethylaminomethyl, cyclopropyl, cyclopropylmethyl, cyclopropylhydroxymethyl, 2-cyclopropylethyl, 2-propenyl, 2-butenyl, 2-methyl-2-propenyl, 2-methyl-2-butenyl, 3-methyl-2-butenyl, 2,3-dimethyl-2-butenyl, ethynyl, 2-propynyl, 2-butynyl, 4-methyl-2-pentynyl, 1-hydroxy-2-propenyl, phenyl, 2-thienyl, 3-thienyl, 4-pyrazolyl, benzyl, 2-fluorobenzyl, 3-fluorobenzyl, 4-fluorobenzyl, 2,4-difluorobenzyl, 3,4-difluorobenzyl, 2-chlorobenzyl, 3-chlorobenzyl, 2-cyanobenzyl, 3-cyanobenzyl, 3-carboxybenzyl, 2-thienylmethyl, 3-thienylmethyl, 6-methoxy-2-pyridylmethyl, 6-methoxy-3-pyridylmethyl, phenethyl, hydroxyphenylmethyl, (2-fluorophenyl)hydroxymethyl, (3-fluorophenyl)hydroxymethyl or (4-fluorophenyl)hydroxymethyl group,

most preferably a hydrogen atom, chlorine atom, bromine atom, methyl, ethyl, propyl, isopropyl, butyl, isobutyl, pentyl, isopentyl, hexyl, hydroxymethyl, methoxymethyl, ethoxymethyl, isopropoxymethyl, 2-methoxyethyl, 2-ethoxyethyl, isobutoxymethyl, sec-butoxymethyl, tert-butoxymethyl, 1-ethylpropoxymethyl, 2-fluoroethoxymethyl, cyclobutoxymethyl, cyclopropylmethoxymethyl, dimethylaminomethyl, cyclopropyl, cyclopropylmethyl, 2-cyclopropylethyl, 2-propenyl, ethynyl, 2-propynyl, 2-butynyl, 4-methyl-2-pentynyl, 1-hydroxy-2-propenyl, phenyl, 4-pyrazolyl, benzyl, 2-fluorobenzyl, 3-fluorobenzyl, 4-fluorobenzyl, 2-cyanobenzyl, 3-cyanobenzyl, 3-carboxybenzyl, 6-methoxy-2-pyridylmethyl, 6-methoxy-3-pyridylmethyl, phenethyl or hydroxyphenylmethyl group.

In the substituent(s) referred to in the present invention, respective atoms or respective rings are also included.

When geometric isomers or optical isomers exist in the pyrrolopyridazinone compound represented by the formula (1) of the present invention, these isomers are included in the scope of the present invention, and also, when proton tautomers exist, these tautomers are included in the scope of the present invention.

The pyrrolopyridazinone compound of the present invention can exist as a hydrate or a solvate, or a HCl adduct, and these are included in the present invention.

In the pyrrolopyridazinone compound represented by the formula (1) of the present invention, preferred are

(1) a compound wherein R 1 is a methyl or difluoromethyl group,

(2) a compound wherein R 1 is a difluoromethyl group,

(3) a compound wherein R 2 is a cyclopropyl, cyclobutyl, cyclopentyl, cyclopropylmethyl, cyclobutylmethyl, ethyl or isopropyl group,

(4) a compound wherein R 2 is a cyclopropyl, cyclobutyl, cyclopentyl, cyclopropylmethyl or isopropyl group,

(5) a compound wherein R 2 is a cyclopropyl or cyclopropylmethyl group,

(6) a compound wherein R 3 is a hydrogen atom or a substituted oxygen-containing hetero ring formed in combination with the group —O—R 2 (a 2,2-(1,2-ethylene)-tetrahydrofuran ring, 2,2-(1,3-propylene)-tetrahydrofuran ring, 2,2-(1,4-butylene)-tetrahydrofuran ring, 2-cyclopropyl-tetrahydrofuran ring, 2-cyclobutyl-tetrahydrofuran ring, 2,2-dimethyl-tetrahydrofuran ring, 6,6-(1,2-ethylene)-3,6-dihydro-2H-pyran ring, 6,6-(1,3-propylene)-3,6-dihydro-2H-pyran ring, 6,6-(1,4-butylene)-3,6-dihydro-2H-pyran ring, 6-cyclopropyl-3,6-dihydro-2H-pyran ring, 6-cyclobutyl-3,6-dihydro-2H-pyran ring or 6,6-dimethyl-3,6-dihydro-2H-pyran ring),

(7) a compound wherein R 3 is a hydrogen atom or a substituted oxygen-containing hetero ring formed in combination with the group —O—R 2 (a 2,2-(1,4-butylene)-tetrahydrofuran ring, 6,6-(1,3-propylene)-3,6-dihydro-2H-pyran ring, 6,6-(1,4-butylene)-3,6-dihydro-2H-pyran ring, 6-cyclopropyl-3,6-dihydro-2H-pyran ring or 6,6-dimethyl-3,6-dihydro-2H-pyran ring),

(8) a compound wherein R 4 is a hydrogen atom, chlorine atom, bromine atom, iodine atom, methyl, ethyl, propyl, isopropyl, butyl, isobutyl, pentyl, isopentyl, neopentyl, 2-methylbutyl, hexyl, 2-methylpentyl, 3-methylpentyl, 4-methylpentyl, 2-ethylbutyl, 2,2-dimethylbutyl, 3,3-dimethylbutyl, 2,3-dimethylbutyl, heptyl, 2-methylhexyl, 3-methylhexyl, 4-methylhexyl, 5-methylhexyl, 2,3-dimethylpentyl, 2,4-dimethylpentyl, 3,4-dimethylpentyl, 2,2-dimethylpentyl, 3,3-dimethylpentyl, 4,4-dimethylpentyl, octyl, 2-methylheptyl, 3-methylheptyl, 4-methylheptyl, 5-methylheptyl, 6-methylheptyl, 2-ethylhexyl, 3-ethylhexyl, 4-ethylhexyl, 2,3-dimethylhexyl, 2,4-dimethylhexyl, 2,5-dimethylhexyl, 3,4-dimethylhexyl, 3,5-dimethylhexyl, 2,2-dimethylhexyl, 3,3-dimethylhexyl, 4,4-dimethylhexyl, 5,5-dimethylhexyl, 2-methyl-3-ethylpentyl, 2-propylpentyl, 2,2,3,3-tetramethylbutyl, trifluoromethyl, 2,2,2-trifluoroethyl, 3,3,3-trifluoropropyl, 2-chloroethyl, hydroxymethyl, 1-hydroxyethyl, 2-hydroxyethyl, 1-hydroxypropyl, 3-hydroxypropyl, 1-hydroxybutyl, 4-hydroxybutyl, 1-hydroxypentyl, 5-hydroxypentyl, 1-hydroxyhexyl, 6-hydroxyhexyl, 1-hydroxy-2-methylpropyl, 2-hydroxy-2-methylpropyl, 1-hydroxy-3-methylbutyl, 3-hydroxy-3-methylbutyl, 1-hydroxy-4-methylpentyl, 4-hydroxy-4-methylpentyl, 2-ethyl-2-hydroxybutyl, cyanomethyl, 2-cyanoethyl, 3-cyanopropyl, 4-cyanobutyl, 5-cyanopentyl, 6-cyanohexyl, 2-cyano-2-methylpropyl, 3-cyano-3-methylbutyl, 4-cyano-4-methylpentyl, 2-cyano-2-ethylbutyl, carboxymethyl, 2-carboxyethyl, 3-carboxypropyl, 4-carboxybutyl, 5-carboxypentyl, 6-carboxyhexyl, 2-carboxy-2-methylpropyl, 3-carboxy-3-methylbutyl, 4-carboxy-4-methylpentyl, 2-carboxy-2-ethylbutyl, methoxymethyl, 2-methoxyethyl, 2-methoxypropyl, 3-methoxypropyl, 4-methoxybutyl, 5-methoxypentyl, 6-methoxyhexyl, 2-methoxy-2-methylpropyl, 3-methoxy-3-methylbutyl, 4-methoxy-4-methylpentyl, 2-ethyl-2-methoxybutyl,

ethoxymethyl, 2-ethoxyethyl, 2-ethoxypropyl, 3-ethoxypropyl, 4-ethoxybutyl, 5-ethoxypentyl, 6-ethoxyhexyl, 2-ethoxy-2-methylpropyl, 3-ethoxy-3-methylbutyl, 4-ethoxy-4-methylpentyl, 2-ethoxy-2-ethylbutyl, propoxymethyl, 2-propoxyethyl, 3-propoxypropyl, 4-propoxybutyl, 5-propoxypentyl, 6-propoxyhexyl, 2-methyl-2-propoxypropyl, 3-methyl-3-propoxybutyl, 4-methyl-4-propoxypentyl, 2-ethyl-2-propoxybutyl, butoxymethyl, 2-butoxyethyl, 3-butoxypropyl, 4-butoxybutyl, 5-butoxypentyl, 6-butoxyhexyl, 2-butoxy-2-methylpropyl, 3-butoxy-3-methylbutyl, 4-butoxy-4-methylpentyl, 2-butoxy-2-ethylbutyl, isopropoxymethyl, 2-isopropoxyethyl, 3-isopropoxypropyl, 4-isopropoxybutyl, 5-isopropoxypentyl, 6-isopropoxyhexyl, 2-isopropoxy-2-methylpropyl, 3-isopropoxy-3-methylbutyl, 4-isopropoxy-4-methylpentyl, 2-ethyl-2-isopropoxybutyl, 2-fluoroethoxymethyl, 2-(2-fluoroethoxy)ethyl, isobutoxymethyl, 2-isobutoxyethyl, sec-butoxymethyl, 2-(sec-butoxy)ethyl, tert-butoxymethyl, 2-(tert-butoxy)ethyl, 1-ethylpropoxymethyl, 2-(1-ethylpropoxy)ethyl, 2-(2-fluoroethoxy)propyl, 3-(2-fluoroethoxy)propyl, 4-(2-fluoroethoxy)butyl, 5-(2-fluoroethoxy)pentyl, 6-(2-fluoroethoxy)hexyl, 2-(2-fluoroethoxy)-2-methylpropyl, 3-(2-fluoroethoxy)-3-methylbutyl, 4-(2-fluoroethoxy)-4-methylpentyl, 2-ethyl-2-(2-fluoroethoxy)butyl, (2,2,2-trifluoroethoxy)methyl, 2-(2,2,2-trifluoroethoxy)ethyl, 2-(2,2,2-trifluoroethoxy)propyl, 3-(2,2,2-trifluoroethoxy)propyl, 4-(2,2,2-trifluoroethoxy)butyl, 5-(2,2,2-trifluoroethoxy)pentyl, 6-(2,2,2-trifluoroethoxy)hexyl, 2-(2,2,2-trifluoroethoxy)-2-methylpropyl, 3-(2,2,2-trifluoroethoxy)-3-methylbutyl, 4-(2,2,2-trifluoroethoxy)-4-methylpentyl, 2-ethyl-2-(2,2,2-trifluoroethoxy)butyl, cyclopropoxymethyl, 2-cyclopropoxyethyl, 2-cyclopropoxypropyl, 3-cyclopropoxypropyl, 4-cyclopropoxybutyl, 5-cyclopropoxypentyl, 6-cyclopropoxyhexyl, 2-cyclopropoxy-2-methylpropyl, 3-cyclopropoxy-3-methylbutyl, 4-cyclopropoxy-4-methylpentyl, 2-cyclopropoxy-2-ethylbutyl, cyclobutoxymethyl, 2-cyclobutoxyethyl, 2-cyclobutoxypropyl, 3-cyclobutoxypropyl, 4-cyclobutoxybutyl, 5-cyclobutoxypentyl, 6-cyclobutoxyhexyl, 2-cyclobutoxy-2-methylpropyl, 3-cyclobutoxy-3-methylbutyl, 4-cyclobutoxy-4-methylpentyl, 2-cyclobutoxy-2-ethylbutyl, cyclopropylmethoxymethyl, 2-cyclopropylmethoxyethyl, 2-cyclopropylmethoxypropyl, 3-cyclopropylmethoxypropyl, 4-cyclopropylmethoxybutyl, 5-cyclopropylmethoxypentyl, 6-cyclopropylmethoxyhexyl, 2-cyclopropylmethoxy-2-methylpropyl, 3-cyclopropylmethoxy-3-methylbutyl, 4-cyclopropylmethoxy-4-methylpentyl, 2-cyclopropylmethoxy-2-ethylbutyl, cyclobutylmethoxymethyl, 2-cyclobutylmethoxyethyl, 2-cyclobutylmethoxypropyl, 3-cyclobutylmethoxypropyl, 4-cyclobutylmethoxybutyl, 5-cyclobutylmethoxypentyl, 6-cyclobutylmethoxyhexyl, 2-cyclobutylmethoxy-2-methylpropyl, 3-cyclobutylmethoxy-3-methylbutyl, 4-cyclobutylmethoxy-4-methylpentyl, 2-cyclobutylmethoxy-2-ethylbutyl, methoxycarbonylmethyl, 2-methoxycarbonylethyl, 3-methoxycarbonylpropyl, 4-methoxycarbonylbutyl, 5-methoxycarbonylpentyl, 6-methoxycarbonylhexyl, 2-methoxycarbonyl-2-methylpropyl, 3-methoxycarbonyl-3-methylbutyl, 4-methoxycarbonyl-4-methylpentyl, 2-ethyl-2-methoxycarbonylbutyl, ethoxycarbonylmethyl, 2-ethoxycarbonylethyl, 3-ethoxycarbonylpropyl, 4-ethoxycarbonylbutyl, 5-ethoxycarbonylpentyl, 6-ethoxycarbonylhexyl, 2-ethoxycarbonyl-2-methylpropyl, 3-ethoxycarbonyl-3-methylbutyl, 4-ethoxycarbonyl-4-methylpentyl, 2-ethoxycarbonyl-2-ethylbutyl, propoxycarbonylmethyl, 2-propoxycarbonylethyl,

3-propoxycarbonylpropyl, 4-propoxycarbonylbutyl, 5-propoxycarbonylpentyl, 6-propoxycarbonylhexyl, 2-methyl-2-propoxycarbonylpropyl, 3-methyl-3-propoxycarbonylbutyl, 4-methyl-4-propoxycarbonylpentyl, 2-ethyl-2-propoxycarbonylbutyl, butoxycarbonylmethyl, 2-butoxycarbonylethyl, 3-butoxycarbonylpropyl, 4-butoxycarbonylbutyl, 5-butoxycarbonylpentyl, 6-butoxycarbonylhexyl, 2-butoxycarbonyl-2-methylpropyl, 3-butoxycarbonyl-3-methylbutyl, 4-butoxycarbonyl-4-methylpentyl, 2-butoxycarbonyl-2-ethylbutyl, isopropoxycarbonylmethyl, 2-isopropoxycarbonylethyl, 3-isopropoxycarbonylpropyl, 4-isopropoxycarbonylbutyl, 5-isopropoxycarbonylpentyl, 6-isopropoxycarbonylhexyl, 2-isopropoxycarbonyl-2-methylpropyl, 3-isopropoxycarbonyl-3-methylbutyl, 4-isopropoxycarbonyl-4-methylpentyl, 2-ethyl-2-isopropoxycarbonylbutyl, isobutoxycarbonylmethyl, 2-isobutoxycarbonylethyl, 3-isobutoxycarbonylpropyl, 4-isobutoxycarbonylbutyl, 5-isobutoxycarbonylpentyl, 6-isobutoxycarbonylhexyl, 2-isobutoxycarbonyl-2-methylpropyl, 3-isobutoxycarbonyl-3-methylbutyl, 4-isobutoxycarbonyl-4-methylpentyl, 2-ethyl-2-isobutoxycarbonylbutyl, acetyloxymethyl, 2-acetyloxyethyl, 3-acetyloxypropyl, 4-acetyloxybutyl, 5-acetyloxypentyl, 6-acetyloxyhexyl, 2-acetyloxy-2-methylpropyl, 3-acetyloxy-3-methylbutyl, 4-acetyloxy-4-methylpentyl, 2-acetyloxy-2-ethylbutyl, propionyloxymethyl, 2-propionyloxyethyl, 3-propionyloxypropyl, 4-propionyloxybutyl, 5-propionyloxypentyl, 6-propionyloxyhexyl, 2-methyl-2-propionyloxypropyl, 3-methyl-3-propionyloxybutyl, 4-methyl-4-propionyloxypentyl, 2-ethyl-2-propionyloxybutyl, butyryloxymethyl, 2-butyryloxyethyl, 3-butyryloxypropyl, 4-butyryloxybutyl, 5-butyryloxypentyl, 6-butyryloxyhexyl, 2-butyryloxy-2-methylpropyl, 3-butyryloxy-3-methylbutyl, 4-butyryloxy-4-methylpentyl, 2-butyryloxy-2-ethylbutyl,

acetylmethyl, 2-acetylethyl, 3-acetylpropyl, 4-acetylbutyl, 5-acetylpentyl, 6-acetylhexyl, 2-acetyl-2-methylpropyl, 3-acetyl-3-methylbutyl, 4-acetyl-4-methylpentyl, 2-acetyl-2-ethylbutyl, propionylmethyl, 2-propionylethyl, 3-propionylpropyl, 4-propionylbutyl, 5-propionylpentyl, 6-propionylhexyl, 3-propionyl-3-methylbutyl, 4-propionyl-4-methylpentyl, 2-ethyl-2-propionylbutyl, butyrylmethyl, 2-butyrylethyl, 3-butyrylpropyl, 4-butyrylbutyl, 5-butyrylpentyl, 6-butyrylhexyl, 2-butyryl-2-methylpropyl, 3-butyryl-3-methylbutyl, 4-butyryl-4-methylpentyl, 2-butyryl-2-ethylbutyl, dimethylaminomethyl, 2-dimethylaminoethyl, 3-dimethylaminopropyl, 4-dimethylaminobutyl, diethylaminomethyl, 2-diethylaminoethyl, 3-diethylaminopropyl, 4-diethylaminobutyl, dipropylaminomethyl, 2-dipropylaminoethyl, 3-dipropylaminopropyl, 4-dipropylaminobutyl, dibutylaminomethyl, 2-dibutylaminoethyl, 3-dibutylaminopropyl, 4-dibutylaminobutyl, diisopropylaminomethyl, 2-diisopropylaminoethyl, 3-diisopropylaminopropyl, 4-diisopropylaminobutyl, cyclopropyl, 1-hydroxycyclopropyl, cyclobutyl, 1-hydroxycyclobutyl, cyclopropylmethyl, (1-hydroxycyclopropyl)methyl, cyclobutylmethyl, (1-hydroxycyclobutyl)methyl, cyclopropylhydroxymethyl, hydroxy(1-hydroxycyclopropyl)methyl, cyclobutylhydroxymethyl, hydroxy(1-hydroxycyclobutyl)methyl, 2-cyclopropylethyl, 2-(1-hydroxycyclopropyl)ethyl, 2-cyclobutylethyl, 2-(1-hydroxycyclobutyl)ethyl, 3-cyclopropylpropyl, 3-(1-hydroxycyclopropyl)propyl, 3-cyclobutylpropyl, 3-(1-hydroxycyclobutyl)propyl, 2-cyclopropyl-2-hydroxyethyl, 2-hydroxy-2-(1-hydroxycyclopropyl)ethyl,

2-cyclobutyl-2-hydroxyethyl, 2-hydroxy-2-(1-hydroxycyclobutyl)ethyl, 3-cyclopropyl-3-hydroxypropyl, 3-hydroxy-3-(1-hydroxycyclopropyl)propyl, 3-cyclobutyl-3-hydroxypropyl, 3-hydroxy-3-(1-hydroxycyclobutyl)propyl, 2-propenyl, 2-butenyl, 3-butenyl, 2-pentenyl, 3-pentenyl, 4-pentenyl, 2-hexenyl, 3-hexenyl, 4-hexenyl, 5-hexenyl, 2-methyl-2-propenyl, 2-methyl-2-butenyl, 3-methyl-2-butenyl, 2-methyl-3-butenyl, 3-methyl-3-butenyl, 2-methyl-2-pentenyl, 3-methyl-2-pentenyl, 4-methyl-2-pentenyl, 2-methyl-3-pentenyl, 3-methyl-3-pentenyl, 4-methyl-3-pentenyl, 2-methyl-4-pentenyl, 3-methyl-4-pentenyl, 4-methyl-4-pentenyl, 2,3-dimethyl-2-butenyl, ethynyl, 2-propynyl, 2-butynyl, 3-butynyl, 2-pentynyl, 3-pentynyl, 4-pentynyl, 2-methyl-3-butynyl, 2-hexynyl, 3-hexynyl, 4-hexynyl, 5-hexynyl, 4-methyl-2-pentynyl, 2-methyl-3-pentynyl, 2-methyl-4-pentynyl, 3-methyl-4-pentynyl, 2,2-dimethyl-3-butynyl, 1-hydroxy-2-propenyl, 1-hydroxy-2-butenyl, 2-hydroxy-3-butenyl, 1-hydroxy-2-pentenyl, 2-hydroxy-3-pentenyl, 3-hydroxy-4-pentenyl, 1-hydroxy-2-hexenyl, 2-hydroxy-3-hexenyl, 3-hydroxy-4-hexenyl, 4-hydroxy-5-hexenyl, 1-hydroxy-2-propynyl, 1-hydroxy-2-butynyl, 2-hydroxy-3-butynyl, 1-hydroxy-2-pentynyl, 2-hydroxy-3-pentynyl, 3-hydroxy-4-pentynyl, 1-hydroxy-2-hexynyl, 2-hydroxy-3-hexynyl, 3-hydroxy-4-hexynyl, 4-hydroxy-5-hexynyl,

phenyl, 2-fluorophenyl, 3-fluorophenyl, 4-fluorophenyl, 2,4-difluorophenyl, 2,6-difluorophenyl, 3,4-difluorophenyl, 2,4,6-trifluorophenyl, 2-chlorophenyl, 3-chlorophenyl, 4-chlorophenyl, 2,4-dichlorophenyl, 2,6-dichlorophenyl, 3,4-dichlorophenyl, 2,4,6-trichlorophenyl, 3-hydroxyphenyl, 4-hydroxyphenyl, 3-cyanophenyl, 4-cyanophenyl, 3-nitrophenyl, 4-nitrophenyl, 3-carboxyphenyl, 4-carboxyphenyl, 3-methylphenyl, 4-methylphenyl, 3-trifluoromethylphenyl, 4-trifluoromethylphenyl, 3-ethylphenyl, 4-ethylphenyl, 3-propylphenyl, 4-propylphenyl, 3-isopropylphenyl, 4-isopropylphenyl, 3-(1-hydroxy-1-methylethyl)phenyl, 4-(1-hydroxy-1-methylethyl)phenyl, 3-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)phenyl, 4-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)phenyl, 3-(1-carboxy-1-methylethyl)phenyl, 4-(1-carboxy-1-methylethyl)phenyl, 3-methoxyphenyl, 4-methoxyphenyl, 3-ethoxyphenyl, 4-ethoxyphenyl, 3-propoxyphenyl, 4-propoxyphenyl, 3-butoxyphenyl, 4-butoxyphenyl, 3-isopropoxyphenyl, 4-isopropoxyphenyl, 3-methoxycarbonylphenyl, 4-methoxycarbonylphenyl, 3-ethoxycarbonylphenyl, 4-ethoxycarbonylphenyl, 3-acetoxyphenyl, 4-acetoxyphenyl, 3-dimethylaminophenyl, 4-dimethylaminophenyl, 3-diethylaminophenyl, 4-diethylaminophenyl, 3-dipropylaminophenyl, 4-dipropylaminophenyl, 2-thienyl, 4-cyano-2-thienyl, 5-cyano-2-thienyl, 4-carboxy-2-thienyl, 5-carboxy-2-thienyl, 4-methyl-2-thienyl, 5-methyl-2-thienyl, 4-trifluoromethyl-2-thienyl, 5-trifluoromethyl-2-thienyl, 4-ethyl-2-thienyl, 5-ethyl-2-thienyl, 4-propyl-2-thienyl, 5-propyl-2-thienyl, 4-isopropyl-2-thienyl, 5-isopropyl-2-thienyl, 4-(1-hydroxy-1-methylethyl)-2-thienyl, 5-(1-hydroxy-1-methylethyl)-2-thienyl, 4-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-2-thienyl, 5-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-2-thienyl, 4-(1-carboxy-1-methylethyl)-2-thienyl, 5-(1-carboxy-1-methylethyl)-2-thienyl, 4-methoxycarbonyl-2-thienyl, 5-methoxycarbonyl-2-thienyl, 4-ethoxycarbonyl-2-thienyl, 5-ethoxycarbonyl-2-thienyl,

4-propoxycarbonyl-2-thienyl, 5-propoxycarbonyl-2-thienyl, 4-butoxycarbonyl-2-thienyl, 5-butoxycarbonyl-2-thienyl, 4-isopropoxycarbonyl-2-thienyl, 5-isopropoxycarbonyl-2-thienyl, 3-thienyl, 4-cyano-3-thienyl, 5-cyano-3-thienyl, 4-carboxy-3-thienyl, 5-carboxy-3-thienyl, 4-methyl-3-thienyl, 5-methyl-3-thienyl, 4-trifluoromethyl-3-thienyl, 5-trifluoromethyl-3-thienyl, 5-ethyl-3-thienyl, 5-propyl-3-thienyl, 5-isopropyl-3-thienyl, 5-(1-hydroxy-1-methylethyl)-3-thienyl, 5-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-3-thienyl, 5-(1-carboxy-1-methylethyl)-3-thienyl, 5-methoxycarbonyl-3-thienyl, 5-ethoxycarbonyl-3-thienyl, 4-thiazolyl, 2-cyano-4-thiazolyl, 2-carboxy-4-thiazolyl, 2-methyl-4-thiazolyl, 2-ethyl-4-thiazolyl, 2-propyl-4-thiazolyl, 2-isopropyl-4-thiazolyl, 2-trifluoromethyl-4-thiazolyl, 2-(1-hydroxy-1-methylethyl)-4-thiazolyl, 2-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-4-thiazolyl, 2-(1-carboxy-1-methylethyl)-4-thiazolyl, 2-methoxycarbonyl-4-thiazolyl, 2-ethoxycarbonyl-4-thiazolyl, 5-thiazolyl, 2-cyano-5-thiazolyl, 2-carboxy-5-thiazolyl, 2-methyl-5-thiazolyl, 2-ethyl-5-thiazolyl, 2-propyl-5-thiazolyl, 2-isopropyl-5-thiazolyl, 2-trifluoromethyl-5-thiazolyl, 2-(1-hydroxy-1-methylethyl)-5-thiazolyl, 2-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-5-thiazolyl, 2-(1-carboxy-1-methylethyl)-5-thiazolyl, 2-methoxycarbonyl-5-thiazolyl, 2-ethoxycarbonyl-5-thiazolyl, 2-propoxycarbonyl-5-thiazolyl, 2-isopropoxycarbonyl-5-thiazolyl, 4-pyrazolyl, 1-methyl-4-pyrazolyl, 1-ethyl-4-pyrazolyl, 3-pyrazolyl, 1-methyl-3-pyrazolyl, 1-ethyl-3-pyrazolyl,

6-cyano-2-pyridyl, 6-carboxy-2-pyridyl, 6-trifluoromethyl-2-pyridyl, 6-methoxy-2-pyridyl, 6-ethoxy-2-pyridyl, 6-methoxycarbonyl-2-pyridyl, 6-ethoxycarbonyl-2-pyridyl, 6-(1-hydroxy-1-methylethyl)-2-pyridyl, 6-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-2-pyridyl, 6-(1-carboxy-1-methylethyl)-2-pyridyl, 6-cyano-3-pyridyl, 6-carboxy-3-pyridyl, 6-trifluoromethyl-3-pyridyl, 6-methoxy-3-pyridyl, 6-ethoxy-3-pyridyl, 6-methoxycarbonyl-3-pyridyl, 6-ethoxycarbonyl-3-pyridyl, 6-(1-hydroxy-1-methylethyl)-3-pyridyl, 6-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-3-pyridyl, 6-(1-carboxy-1-methylethyl)-3-pyridyl, 2-cyano-3-pyridyl, 2-carboxy-3-pyridyl, 2-trifluoromethyl-3-pyridyl, 2-methoxy-3-pyridyl, 2-ethoxy-3-pyridyl, 2-propoxy-3-pyridyl, 2-methoxycarbonyl-3-pyridyl, 2-ethoxycarbonyl-3-pyridyl, 2-propoxycarbonyl-3-pyridyl, 2-(1-hydroxy-1-methylethyl)-3-pyridyl, 2-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-3-pyridyl, 2-(1-carboxy-1-methylethyl)-3-pyridyl, 2-cyano-4-pyridyl, 2-carboxy-4-pyridyl, 2-trifluoromethyl-4-pyridyl, 2-methoxy-4-pyridyl, 2-ethoxy-4-pyridyl, 2-propoxy-4-pyridyl, 2-methoxycarbonyl-4-pyridyl, 2-ethoxycarbonyl-4-pyridyl, 2-(1-hydroxy-1-methylethyl)-4-pyridyl, 2-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-4-pyridyl, 2-(1-carboxy-1-methylethyl)-4-pyridyl, benzyl, 2-fluorobenzyl, 3-fluorobenzyl, 4-fluorobenzyl, 2,4-difluorobenzyl, 2,6-difluorobenzyl, 3,4-difluorobenzyl, 2-chlorobenzyl, 3-chlorobenzyl, 4-chlorobenzyl, 2,4-dichlorobenzyl, 2,6-dichlorobenzyl, 3,4-dichlorobenzyl, 2-cyanobenzyl, 3-cyanobenzyl, 4-cyanobenzyl, 3-nitrobenzyl, 4-nitrobenzyl, 3-carboxybenzyl, 4-carboxybenzyl, 3-trifluoromethylbenzyl, 4-trifluoromethylbenzyl, 3-(1-hydroxy-1-methylethyl)benzyl, 4-(1-hydroxy-1-methylethyl)benzyl, 3-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)benzyl, 4-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)benzyl,

3-(1-carboxy-1-methylethyl)benzyl, 4-(1-carboxy-1-methylethyl)benzyl, 3-methoxybenzyl, 4-methoxybenzyl, 3-ethoxybenzyl, 4-ethoxybenzyl, 3-methoxycarbonylbenzyl, 4-methoxycarbonylbenzyl, 3-ethoxycarbonylbenzyl, 4-ethoxycarbonylbenzyl, 2-thienylmethyl, 4-cyano-2-thienylmethyl, 5-cyano-2-thienylmethyl, 4-carboxy-2-thienylmethyl, 5-carboxy-2-thienylmethyl, 4-methyl-2-thienylmethyl, 5-methyl-2-thienylmethyl, 4-trifluoromethyl-2-thienylmethyl, 5-trifluoromethyl-2-thienylmethyl, 4-(1-hydroxy-1-methylethyl)-2-thienylmethyl, 5-(1-hydroxy-1-methylethyl)-2-thienylmethyl, 4-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-2-thienylmethyl, 5-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-2-thienylmethyl, 4-(1-carboxy-1-methylethyl)-2-thienylmethyl, 5-(1-carboxy-1-methylethyl)-2-thienylmethyl, 3-thienylmethyl, 4-cyano-3-thienylmethyl, 5-cyano-3-thienylmethyl, 4-carboxy-3-thienylmethyl, 5-carboxy-3-thienylmethyl, 4-methyl-3-thienylmethyl, 5-methyl-3-thienylmethyl, 4-trifluoromethyl-3-thienylmethyl, 5-trifluoromethyl-3-thienylmethyl, 5-ethyl-3-thienylmethyl, 5-(1-hydroxy-1-methylethyl)-3-thienylmethyl, 5-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-3-thienylmethyl, 5-(1-carboxy-1-methylethyl)-3-thienylmethyl, 5-methoxycarbonyl-3-thienylmethyl,

4-thiazolylmethyl, 2-cyano-4-thiazolylmethyl, 2-carboxy-4-thiazolylmethyl, 2-methyl-4-thiazolylmethyl, 2-ethyl-4-thiazolylmethyl, 2-propyl-4-thiazolylmethyl, 2-isopropyl-4-thiazolylmethyl, 2-trifluoromethyl-4-thiazolylmethyl, 2-(1-hydroxy-1-methylethyl)-4-thiazolylmethyl, 2-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-4-thiazolylmethyl, 2-(1-carboxy-1-methylethyl)-4-thiazolylmethyl, 2-methoxycarbonyl-4-thiazolylmethyl, 5-thiazolylmethyl, 2-cyano-5-thiazolylmethyl, 2-carboxy-5-thiazolylmethyl, 2-methyl-5-thiazolylmethyl, 2-ethyl-5-thiazolylmethyl, 2-trifluoromethyl-5-thiazolylmethyl, 2-(1-hydroxy-1-methylethyl)-5-thiazolylmethyl, 2-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-5-thiazolylmethyl, 2-(1-carboxy-1-methylethyl)-5-thiazolylmethyl, 2-methoxycarbonyl-5-thiazolylmethyl, 4-pyrazolylmethyl, 6-cyano-2-pyridylmethyl, 6-carboxy-2-pyridylmethyl, 6-trifluoromethyl-2-pyridylmethyl, 6-methoxy-2-pyridylmethyl, 6-ethoxy-2-pyridylmethyl, 6-methoxycarbonyl-2-pyridylmethyl, 6-ethoxycarbonyl-2-pyridylmethyl, 6-(1-hydroxy-1-methylethyl)-2-pyridylmethyl, 6-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-2-pyridylmethyl, 6-(1-carboxy-1-methylethyl)-2-pyridylmethyl, 6-cyano-3-pyridylmethyl, 6-carboxy-3-pyridylmethyl, 6-trifluoromethyl-3-pyridylmethyl, 6-methoxy-3-pyridylmethyl, 6-ethoxy-3-pyridylmethyl, 6-methoxycarbonyl-3-pyridylmethyl, 6-ethoxycarbonyl-3-pyridylmethyl, 6-(1-hydroxy-1-methylethyl)-3-pyridylmethyl, 6-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-3-pyridylmethyl, 6-(1-carboxy-1-methylethyl)-3-pyridylmethyl, 2-cyano-3-pyridylmethyl, 2-carboxy-3-pyridylmethyl,

2-trifluoromethyl-3-pyridylmethyl, 2-methoxy-3-pyridylmethyl, 2-ethoxy-3-pyridylmethyl, 2-propoxy-3-pyridylmethyl, 2-methoxycarbonyl-3-pyridylmethyl, 2-ethoxycarbonyl-3-pyridylmethyl, 2-propoxycarbonyl-3-pyridylmethyl, 2-(1-hydroxy-1-methylethyl)-3-pyridylmethyl, 2-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-3-pyridylmethyl, 2-(1-carboxy-1-methylethyl)-3-pyridylmethyl, 2-cyano-4-pyridylmethyl, 2-carboxy-4-pyridylmethyl, 2-trifluoromethyl-4-pyridylmethyl, 2-methoxy-4-pyridylmethyl, 2-ethoxy-4-pyridylmethyl, 2-propoxy-4-pyridylmethyl, 2-methoxycarbonyl-4-pyridylmethyl, 2-ethoxycarbonyl-4-pyridylmethyl, 2-(1-hydroxy-1-methylethyl)-4-pyridyl, 2-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-4-pyridylmethyl, 2-(1-carboxy-1-methylethyl)-4-pyridylmethyl, phenethyl, 2-fluorophenethyl, 3-fluorophenethyl, 4-fluorophenethyl, 3-chlorophenethyl, 3-cyanophenethyl, 3-carboxyphenethyl, 3-methoxyphenethyl, 2-(2-thienyl)ethyl, 2-(3-thienyl)ethyl, 2-(4-thiazolyl)ethyl, 2-(5-thiazolyl)ethyl, 2-(4-pyrazolyl)ethyl, 2-(6-cyano-2-pyridyl)ethyl, 2-(6-carboxy-2-pyridyl)ethyl, 2-(6-methoxy-2-pyridyl)ethyl, 2-(6-cyano-3-pyridyl)ethyl, 2-(6-carboxy-3-pyridyl)ethyl, 2-(6-methoxy-3-pyridyl)ethyl, 2-(2-cyano-3-pyridyl)ethyl, 2-(2-carboxy-3-pyridyl)ethyl, 2-(2-methoxy-3-pyridyl)ethyl, hydroxyphenylmethyl, (2-fluorophenyl)hydroxymethyl, (3-fluorophenyl)hydroxymethyl, (4-fluorophenyl)hydroxymethyl, (3-chlorophenyl)hydroxymethyl, (3,4-difluorophenyl)hydroxymethyl, (2,4-difluorophenyl)hydroxymethyl, (3-cyanophenyl)hydroxymethyl, hydroxy(3-trifluoromethylphenyl)methyl or hydroxy(2-thienyl)methyl group,

(9) a compound wherein R 4 is a hydrogen atom, chlorine atom, bromine atom, methyl, ethyl, propyl, isopropyl, butyl, isobutyl, pentyl, isopentyl, neopentyl, hexyl, 2-ethylbutyl, 2,2-dimethylbutyl, 3,3-dimethylbutyl, heptyl, 2,2-dimethylpentyl, 3,3-dimethylpentyl, 4,4-dimethylpentyl, octyl, 4-ethylhexyl, 2,2-dimethylhexyl, 3,3-dimethylhexyl, 4,4-dimethylhexyl, 5,5-dimethylhexyl, 2-propylpentyl, 2,2,3,3-tetramethylbutyl, 2,2,2-trifluoroethyl, 3,3,3-trifluoropropyl, 2-chloroethyl, hydroxyethyl, 2-hydroxyethyl, 3-hydroxypropyl, 4-hydroxybutyl, 5-hydroxypentyl, 6-hydroxyhexyl, 2-hydroxy-2-methylpropyl, 3-hydroxy-3-methylbutyl, 4-hydroxy-4-methylpentyl, 2-ethyl-2-hydroxybutyl, 2-cyano-2-methylpropyl, 3-cyano-3-methylbutyl, 4-cyano-4-methylpentyl, 2-cyano-2-ethylbutyl, 2-carboxy-2-methylpropyl, 3-carboxy-3-methylbutyl, 4-carboxy-4-methylpentyl, 2-carboxy-2-ethylbutyl, methoxymethyl, 2-methoxyethyl, 3-methoxypropyl, 4-methoxybutyl, 5-methoxypentyl, 6-methoxyhexyl, 2-methoxy-2-methylpropyl, 3-methoxy-3-methylbutyl, 4-methoxy-4-methylpentyl, 2-ethyl-2-methoxybutyl, ethoxymethyl, 2-ethoxyethyl, 3-ethoxypropyl, 4-ethoxybutyl, 5-ethoxypentyl, 6-ethoxyhexyl, 2-ethoxy-2-methylpropyl, 3-ethoxy-3-methylbutyl, 4-ethoxy-4-methylpentyl, 2-ethoxy-2-ethylbutyl, propoxymethyl, 2-propoxyethyl, 3-propoxypropyl, 4-propoxybutyl, 2-methyl-2-propoxypropyl, 3-methyl-3-propoxybutyl, 4-methyl-4-propoxypentyl, 2-ethyl-2-propoxybutyl, butoxymethyl, 2-butoxyethyl, 3-butoxypropyl, 4-butoxybutyl, 2-butoxy-2-methylpropyl, 3-butoxy-3-methylbutyl, 4-butoxy-4-methylpentyl, 2-butoxy-2-ethylbutyl, isopropoxymethyl, 2-isopropoxyethyl, 3-isopropoxypropyl, 4-isopropoxybutyl, isobutoxymethyl, sec-butoxymethyl, tert-butoxymethyl, 1-ethylpropoxymethyl, 2-fluoroethoxymethyl, 2-(2-fluoroethoxy)ethyl, 3-(2-fluoroethoxy)propyl, 4-(2-fluoroethoxy)butyl, 5-(2-fluoroethoxy)pentyl, 6-(2-fluoroethoxy)hexyl, 2-(2-fluoroethoxy)-2-methylpropyl, 3-(2-fluoroethoxy)-3-methylbutyl, 4-(2-fluoroethoxy)-4-methylpentyl, 2-ethyl-2-(2-fluoroethoxy)butyl, (2,2,2-trifluoroethoxy)methyl, cyclopropoxymethyl, cyclobutoxymethyl, 2-cyclobutoxyethyl, 3-cyclobutoxypropyl, 4-cyclobutoxybutyl, 5-cyclobutoxypentyl, 6-cyclobutoxyhexyl, 2-cyclobutoxy-2-methylpropyl, 3-cyclobutoxy-3-methylbutyl, 4-cyclobutoxy-4-methylpentyl, 2-cyclobutoxy-2-ethylbutyl, cyclopropylmethoxymethyl, 2-cyclopropylmethoxyethyl, 3-cyclopropylmethoxypropyl, 4-cyclopropylmethoxybutyl, 5-cyclopropylmethoxypentyl, 6-cyclopropylmethoxyhexyl, 2-cyclopropylmethoxy-2-methylpropyl, 3-cyclopropylmethoxy-3-methylbutyl, 4-cyclopropylmethoxy-4-methylpentyl, 2-cyclopropylmethoxy-2-ethylbutyl, cyclobutylmethoxymethyl, methoxycarbonylmethyl, 2-methoxycarbonylethyl, 3-methoxycarbonylpropyl, 4-methoxycarbonylbutyl, 2-methoxycarbonyl-2-methylpropyl, 3-methoxycarbonyl-3-methylbutyl, 4-methoxycarbonyl-4-methylpentyl, 2-ethyl-2-methoxycarbonylbutyl, ethoxycarbonylmethyl, 2-ethoxycarbonylethyl, 3-ethoxycarbonylpropyl, 4-ethoxycarbonylbutyl, 2-ethoxycarbonyl-2-methylpropyl, 3-ethoxycarbonyl-3-methylbutyl, 4-ethoxycarbonyl-4-methylpentyl, 2-ethoxycarbonyl-2-ethylbutyl, propoxycarbonylmethyl, 2-propoxycarbonylethyl, 3-propoxycarbonylpropyl, 4-propoxycarbonylbutyl, 2-methyl-2-propoxycarbonylpropyl, 3-methyl-3-propoxycarbonylbutyl, 4-methyl-4-propoxycarbonylpentyl, 2-ethyl-2-propoxycarbonylbutyl, butoxycarbonylmethyl, 2-butoxycarbonylethyl, 3-butoxycarbonylpropyl, 4-butoxycarbonylbutyl, 2-butoxycarbonyl-2-methylpropyl, 3-butoxycarbonyl-3-methylbutyl, 4-butoxycarbonyl-4-methylpentyl, 2-butoxycarbonyl-2-ethylbutyl, isopropoxycarbonylmethyl, 2-isopropoxycarbonylethyl, 3-isopropoxycarbonylpropyl, 4-isopropoxycarbonylbutyl, 2-isopropoxycarbonyl-2-methylpropyl, 3-isopropoxycarbonyl-3-methylbutyl, 4-isopropoxycarbonyl-4-methylpentyl, 2-ethyl-2-isopropoxycarbonylbutyl, isobutoxycarbonylmethyl, 2-isobutoxycarbonylethyl, 3-isobutoxycarbonylpropyl, 4-isobutoxycarbonylbutyl, acetyloxymethyl, 2-acetyloxyethyl, 3-acetyloxypropyl, 4-acetyloxybutyl, 5-acetyloxypentyl, 6-acetyloxyhexyl, 2-acetyloxy-2-methylpropyl, 3-acetyloxy-3-methylbutyl, 4-acetyloxy-4-methylpentyl, 2-acetyloxy-2-ethylbutyl, propionyloxymethyl, 2-propionyloxyethyl, 3-propionyloxypropyl, 4-propionyloxybutyl, 5-propionyloxypentyl, acetylmethyl, 2-acetylethyl, 3-acetylpropyl, 4-acetylbutyl, 5-acetylpentyl, 6-acetylhexyl, 2-acetyl-2-methylpropyl, 3-acetyl-3-methylbutyl, 4-acetyl-4-methylpentyl, 2-acetyl-2-ethylbutyl, propionylmethyl, 2-propionylethyl, 3-propionylpropyl, 4-propionylbutyl, 5-propionylpentyl,

dimethylaminomethyl, 2-dimethylaminoethyl, diethylaminomethyl, 2-diethylaminoethyl, dipropylaminomethyl, 2-dipropylaminoethyl, 2-dibutylaminomethyl, 3-dibutylaminoethyl, diisopropylaminomethyl, 2-diisopropylaminoethyl, cyclopropyl, 1-hydroxycyclopropyl, cyclobutyl, 1-hydroxycyclobutyl, cyclopropylmethyl, (1-hydroxycyclopropyl)methyl, cyclobutylmethyl, (1-hydroxycyclobutyl)methyl, cyclopropylhydroxymethyl, hydroxy(1-hydroxycyclopropyl)methyl, cyclobutylhydroxymethyl, hydroxy(1-hydroxycyclobutyl)methyl, 2-cyclopropylethyl, 2-(1-hydroxycyclopropyl)ethyl, 2-cyclobutylethyl, 2-(1-hydroxycyclobutyl)ethyl, 2-propenyl, 2-butenyl, 2-pentenyl, 2-hexenyl, 2-methyl-2-propenyl, 2-methyl-2-butenyl, 3-methyl-2-butenyl, 2-methyl-2-pentenyl, 3-methyl-2-pentenyl, 4-methyl-2-pentenyl, 2,3-dimethyl-2-butenyl, ethynyl, 2-propynyl, 2-butynyl, 2-pentynyl, 2-hexynyl, 4-methyl-2-pentynyl, 1-hydroxy-2-propenyl, 1-hydroxy-2-butenyl, 1-hydroxy-2-pentenyl, 1-hydroxy-2-hexenyl, 1-hydroxy-2-propynyl, 1-hydroxy-2-butynyl, 1-hydroxy-2-pentynyl, 1-hydroxy-2-hexynyl, phenyl, 2-fluorophenyl, 3-fluorophenyl, 4-fluorophenyl, 2,4-difluorophenyl, 2,6-difluorophenyl, 3,4-difluorophenyl, 2-chlorophenyl, 3-chlorophenyl, 4-chlorophenyl, 2,4-dichlorophenyl, 2,6-dichlorophenyl, 3,4-dichlorophenyl, 3-cyanophenyl, 4-cyanophenyl, 3-nitrophenyl, 4-nitrophenyl, 3-carboxyphenyl, 4-carboxyphenyl, 3-trifluoromethylphenyl, 4-trifluoromethylphenyl,

3-(1-hydroxy-1-methylethyl)phenyl, 4-(1-hydroxy-1-methylethyl)phenyl, 3-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)phenyl, 4-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)phenyl, 3-(1-carboxy-1-methylethyl)phenyl, 4-(1-carboxy-1-methylethyl)phenyl, 3-methoxyphenyl, 4-methoxyphenyl, 3-ethoxyphenyl, 4-ethoxyphenyl, 3-methoxycarbonylphenyl, 4-methoxycarbonylphenyl, 3-ethoxycarbonylphenyl, 4-ethoxycarbonylphenyl, 2-thienyl, 4-cyano-2-thienyl, 5-cyano-2-thienyl, 4-carboxy-2-thienyl, 5-carboxy-2-thienyl, 4-methyl-2-thienyl, 5-methyl-2-thienyl, 4-trifluoromethyl-2-thienyl, 5-trifluoromethyl-2-thienyl, 4-(1-hydroxy-1-methylethyl)-2-thienyl, 5-(1-hydroxy-1-methylethyl)-2-thienyl, 4-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-2-thienyl, 5-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-2-thienyl, 4-(1-carboxy-1-methylethyl)-2-thienyl, 5-(1-carboxy-1-methylethyl)-2-thienyl, 3-thienyl, 4-cyano-3-thienyl, 5-cyano-3-thienyl, 4-carboxy-3-thienyl, 5-carboxy-3-thienyl, 4-methyl-3-thienyl, 5-methyl-3-thienyl, 4-trifluoromethyl-3-thienyl, 5-trifluoromethyl-3-thienyl, 5-ethyl-3-thienyl, 5-(1-hydroxy-1-methylethyl)-3-thienyl, 5-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-3-thienyl, 5-(1-carboxy-1-methylethyl)-3-thienyl, 5-methoxycarbonyl-3-thienyl, 4-thiazolyl, 2-cyano-4-thiazolyl, 2-carboxy-4-thiazolyl, 2-methyl-4-thiazolyl, 2-ethyl-4-thiazolyl, 2-propyl-4-thiazolyl, 2-isopropyl-4-thiazolyl, 2-trifluoromethyl-4-thiazolyl,

2-(1-hydroxy-1-methylethyl)-4-thiazolyl, 2-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-4-thiazolyl, 2-(1-carboxy-1-methylethyl)-4-thiazolyl, 2-methoxycarbonyl-4-thiazolyl, 5-thiazolyl, 2-cyano-5-thiazolyl, 2-carboxy-5-thiazolyl, 2-methyl-5-thiazolyl, 2-ethyl-5-thiazolyl, 2-trifluoromethyl-5-thiazolyl, 2-(1-hydroxy-1-methylethyl)-5-thiazolyl, 2-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-5-thiazolyl, 2-(1-carboxy-1-methylethyl)-5-thiazolyl, 2-methoxycarbonyl-5-thiazolyl, 2-ethoxycarbonyl-5-thiazolyl, 2-propoxycarbonyl-5-thiazolyl, 2-isopropoxycarbonyl-5-thiazolyl, 4-pyrazolyl, 6-cyano-2-pyridyl, 6-carboxy-2-pyridyl, 6-trifluoromethyl-2-pyridyl, 6-methoxy-2-pyridyl, 6-ethoxy-2-pyridyl, 6-methoxycarbonyl-2-pyridyl, 6-ethoxycarbonyl-2-pyridyl, 6-(1-hydroxy-1-methylethyl)-2-pyridyl, 6-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-2-pyridyl, 6-(1-carboxy-1-methylethyl)-2-pyridyl, 6-cyano-3-pyridyl, 6-carboxy-3-pyridyl, 6-trifluoromethyl-3-pyridyl, 6-methoxy-3-pyridyl, 6-ethoxy-3-pyridyl, 6-methoxycarbonyl-3-pyridyl, 6-ethoxycarbonyl-3-pyridyl, 6-(1-hydroxy-1-methylethyl)-3-pyridyl, 6-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-3-pyridyl, 6-(1-carboxy-1-methylethyl)-3-pyridyl, 2-cyano-3-pyridyl, 2-carboxy-3-pyridyl, 2-trifluoromethyl-3-pyridyl, 2-methoxy-3-pyridyl, 2-ethoxy-3-pyridyl, 2-propoxy-3-pyridyl, 2-methoxycarbonyl-3-pyridyl, 2-ethoxycarbonyl-3-pyridyl, 2-propoxycarbonyl-3-pyridyl, 2-(1-hydroxy-1-methylethyl)-3-pyridyl, 2-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-3-pyridyl, 2-(1-carboxy-1-methylethyl)-3-pyridyl, 2-cyano-4-pyridyl, 2-carboxy-4-pyridyl, 2-trifluoromethyl-4-pyridyl, 2-methoxy-4-pyridyl, 2-ethoxy-4-pyridyl, 2-propoxy-4-pyridyl, 2-methoxycarbonyl-4-pyridyl, 2-ethoxycarbonyl-4-pyridyl, 2-(1-hydroxy-1-methylethyl)-4-pyridyl, 2-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-4-pyridyl, 2-(1-carboxy-1-methylethyl)-4-pyridyl,

benzyl, 2-fluorobenzyl, 3-fluorobenzyl, 4-fluorobenzyl, 2,4-difluorobenzyl, 3,4-difluorobenzyl, 2-chlorobenzyl, 3-chlorobenzyl, 4-chlorobenzyl, 2,4-dichlorobenzyl, 3,4-dichlorobenzyl, 2-cyanobenzyl, 3-cyanobenzyl, 4-cyanobenzyl, 3-nitrobenzyl, 3-carboxybenzyl, 4-carboxybenzyl, 3-trifluoromethylbenzyl, 4-trifluoromethylbenzyl, 3-(1-hydroxy-1-methylethyl)benzyl, 4-(1-hydroxy-1-methylethyl)benzyl, 3-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)benzyl, 4-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)benzyl, 4-(1-carboxy-1-methylethyl)benzyl, 3-methoxybenzyl, 4-methoxybenzyl, 3-methoxycarbonylbenzyl, 4-methoxycarbonylbenzyl, 2-thienylmethyl, 5-cyano-2-thienylmethyl, 5-carboxy-2-thienylmethyl, 5-methyl-2-thienylmethyl, 5-trifluoromethyl-2-thienylmethyl, 5-(1-hydroxy-1-methylethyl)-2-thienylmethyl, 5-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-2-thienylmethyl, 4-(1-carboxy-1-methylethyl)-2-thienylmethyl, 3-thienylmethyl, 5-cyano-3-thienylmethyl, 5-carboxy-3-thienylmethyl, 5-methyl-3-thienylmethyl, 5-trifluoromethyl-3-thienylmethyl, 5-(1-hydroxy-1-methylethyl)-3-thienylmethyl, 5-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-3-thienylmethyl, 4-thiazolylmethyl, 2-cyano-4-thiazolylmethyl, 2-carboxy-4-thiazolylmethyl, 2-methyl-4-thiazolylmethyl, 2-trifluoromethyl-4-thiazolylmethyl, 2-(1-hydroxy-1-methylethyl)-4-thiazolylmethyl, 2-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-4-thiazolylmethyl,

5-thiazolylmethyl, 2-cyano-5-thiazolylmethyl, 2-carboxy-5-thiazolylmethyl, 2-methyl-5-thiazolylmethyl, 2-trifluoromethyl-5-thiazolylmethyl, 2-(1-hydroxy-1-methylethyl)-5-thiazolylmethyl, 2-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-5-thiazolylmethyl, 4-pyrazolylmethyl, 6-cyano-2-pyridylmethyl, 6-carboxy-2-pyridylmethyl, 6-trifluoromethyl-2-pyridylmethyl, 6-methoxy-2-pyridylmethyl, 6-(1-hydroxy-1-methylethyl)-2-pyridylmethyl, 6-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-2-pyridylmethyl, 6-cyano-3-pyridylmethyl, 6-carboxy-3-pyridylmethyl, 6-trifluoromethyl-3-pyridylmethyl, 6-methoxy-3-pyridylmethyl, 6-(1-hydroxy-1-methylethyl)-3-pyridylmethyl, 6-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-3-pyridylmethyl, 2-cyano-3-pyridylmethyl, 2-carboxy-3-pyridylmethyl, 2-trifluoromethyl-3-pyridylmethyl, 2-methoxy-3-pyridylmethyl, 2-(1-hydroxy-1-methylethyl)-3-pyridylmethyl, 2-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-3-pyridylmethyl, 2-cyano-4-pyridylmethyl, 2-carboxy-4-pyridylmethyl, 2-trifluoromethyl-4-pyridylmethyl, 2-methoxy-4-pyridylmethyl, 2-(1-hydroxy-1-methylethyl)-4-pyridyl, 2-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-4-pyridylmethyl, phenethyl, 2-fluorophenethyl, 3-fluorophenethyl, 4-fluorophenethyl, 3-chlorophenethyl, 3-cyanophenethyl, 3-carboxyphenethyl, 3-methoxyphenethyl, 2-(2-thienyl)ethyl, 2-(3-thienyl)ethyl, 2-(6-cyano-2-pyridyl)ethyl, 2-(6-methoxy-2-pyridyl)ethyl, 2-(6-cyano-3-pyridyl)ethyl, 2-(6-methoxy-3-pyridyl)ethyl, 2-(2-cyano-3-pyridyl)ethyl, 2-(2-methoxy-3-pyridyl)ethyl, hydroxyphenylmethyl, (2-fluorophenyl)hydroxymethyl, (3-fluorophenyl)hydroxymethyl, (4-fluorophenyl)hydroxymethyl, (3,4-difluorophenyl)hydroxymethyl or hydroxy(2-thienyl)methyl group,

(10) a compound wherein R 4 is a hydrogen atom, chlorine atom, bromine atom, methyl, ethyl, propyl, isopropyl, butyl, isobutyl, pentyl, isopentyl, neopentyl, hexyl, 2-ethylbutyl, 2,2-dimethylbutyl, 3,3-dimethylbutyl, 2,2,2-trifluoroethyl, 3,3,3-trifluoropropyl, 2-chloroethyl, hydroxymethyl, 2-hydroxy-2-methylpropyl, 3-hydroxy-3-methylbutyl, 4-hydroxy-4-methylpentyl, 2-ethyl-2-hydroxybutyl, 2-cyano-2-methylpropyl, 3-cyano-3-methylbutyl, 2-carboxy-2-methylpropyl, 3-carboxy-3-methylbutyl, 4-carboxy-4-methylpentyl, methoxymethyl, ethoxymethyl, isopropoxymethyl, 2-methoxyethyl, 2-ethoxyethyl, 2-isopropoxyethyl, isobutoxymethyl, sec-butoxymethyl, tert-butoxymethyl, 1-ethylpropoxymethyl, 2-fluoroethoxymethyl, cyclobutoxymethyl, cyclopropylmethoxymethyl, dimethylaminomethyl, cyclopropyl, 1-hydroxycyclopropyl, cyclobutyl, 1-hydroxycyclobutyl, cyclopropylmethyl, (1-hydroxycyclopropyl)methyl, cyclobutylmethyl, (1-hydroxycyclobutyl)methyl, cyclopropylhydroxymethyl, hydroxy(1-hydroxycyclopropyl)methyl, cyclobutylhydroxymethyl, hydroxy(1-hydroxycyclobutyl)methyl, 2-cyclopropylethyl, 2-(1-hydroxycyclopropyl)ethyl, 2-cyclobutylethyl, 2-(1-hydroxycyclobutyl)ethyl, 2-propenyl, 2-butenyl, 2-methyl-2-propenyl, 2-methyl-2-butenyl, 3-methyl-2-butenyl, 2,3-dimethyl-2-butenyl, ethynyl, 2-propynyl, 2-butynyl, 4-methyl-2-pentynyl, 1-hydroxy-2-propenyl, 1-hydroxy-2-butenyl, 1-hydroxy-2-propynyl, 1-hydroxy-2-butynyl, phenyl, 2-fluorophenyl, 4-fluorophenyl, 2,4-difluorophenyl, 2-chlorophenyl, 4-chlorophenyl, 4-cyanophenyl, 4-nitrophenyl, 4-carboxyphenyl, 4-trifluoromethylphenyl, 3-methoxyphenyl, 4-methoxyphenyl, 4-methoxycarbonylphenyl, 2-thienyl, 5-cyano-2-thienyl, 5-carboxy-2-thienyl, 5-methyl-2-thienyl, 5-trifluoromethyl-2-thienyl, 3-thienyl, 5-cyano-3-thienyl, 5-carboxy-3-thienyl, 5-methyl-3-thienyl, 5-trifluoromethyl-3-thienyl,

4-thiazolyl, 2-cyano-4-thiazolyl, 2-carboxy-4-thiazolyl, 2-methyl-4-thiazolyl, 2-trifluoromethyl-4-thiazolyl, 2-(1-hydroxy-1-methylethyl)-4-thiazolyl, 2-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-4-thiazolyl, 5-thiazolyl, 2-cyano-5-thiazolyl, 2-carboxy-5-thiazolyl, 2-methyl-5-thiazolyl, 2-trifluoromethyl-5-thiazolyl, 2-(1-hydroxy-1-methylethyl)-5-thiazolyl, 2-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-5-thiazolyl, 4-pyrazolyl, 6-cyano-2-pyridyl, 6-carboxy-2-pyridyl, 6-trifluoromethyl-2-pyridyl, 6-methoxy-2-pyridyl, 6-(1-hydroxy-1-methylethyl)-2-pyridyl, 6-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-2-pyridyl, 6-cyano-3-pyridyl, 6-carboxy-3-pyridyl, 6-trifluoromethyl-3-pyridyl, 6-methoxy-3-pyridyl, 6-(1-hydroxy-1-methylethyl)-3-pyridyl, 6-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-3-pyridyl, 2-cyano-4-pyridyl, 2-carboxy-4-pyridyl, 2-trifluoromethyl-4-pyridyl, 2-methoxy-4-pyridyl, 2-(1-hydroxy-1-methylethyl)-4-pyridyl, 2-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-4-pyridyl, benzyl, 2-fluorobenzyl, 3-fluorobenzyl, 4-fluorobenzyl, 2,4-difluorobenzyl, 3,4-difluorobenzyl, 2-chlorobenzyl, 3-chlorobenzyl, 2-cyanobenzyl, 3-cyanobenzyl, 3-carboxybenzyl, 4-carboxybenzyl, 3-trifluoromethylbenzyl, 4-methoxybenzyl, 3-methoxycarbonylbenzyl, 2-thienylmethyl, 5-cyano-2-thienylmethyl, 5-carboxy-2-thienylmethyl, 5-trifluoromethyl-2-thienylmethyl, 3-thienylmethyl, 5-cyano-3-thienylmethyl, 5-carboxy-3-thienylmethyl, 5-trifluoromethyl-3-thienylmethyl,

4-thiazolylmethyl, 2-cyano-4-thiazolylmethyl, 2-carboxy-4-thiazolylmethyl, 2-(1-hydroxy-1-methylethyl)-4-thiazolylmethyl, 2-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-4-thiazolylmethyl, 2-cyano-5-thiazolylmethyl, 2-carboxy-5-thiazolylmethyl, 2-(1-hydroxy-1-methylethyl)-5-thiazolylmethyl, 2-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-5-thiazolylmethyl, 6-cyano-2-pyridylmethyl, 6-carboxy-2-pyridylmethyl, 6-methoxy-2-pyridylmethyl, 6-(1-hydroxy-1-methylethyl)-2-pyridylmethyl, 6-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-2-pyridylmethyl, 6-cyano-3-pyridylmethyl, 6-carboxy-3-pyridylmethyl, 6-methoxy-3-pyridylmethyl, 6-(1-hydroxy-1-methylethyl)-3-pyridylmethyl, 6-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-3-pyridylmethyl, 2-cyano-3-pyridylmethyl, 2-carboxy-3-pyridylmethyl, 2-methoxy-3-pyridylmethyl, 2-(1-hydroxy-1-methylethyl)-3-pyridylmethyl, 2-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-3-pyridylmethyl, 2-cyano-4-pyridylmethyl, 2-carboxy-4-pyridylmethyl, 2-methoxy-4-pyridylmethyl, 2-(1-hydroxy-1-methylethyl)-4-pyridyl, 2-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-4-pyridylmethyl, phenethyl, 2-fluorophenethyl, 3-fluorophenethyl, 4-fluorophenethyl, 3-cyanophenethyl, 2-(2-thienyl)ethyl, 2-(6-cyano-2-pyridyl)ethyl, 2-(6-cyano-3-pyridyl)ethyl, 2-(2-cyano-3-pyridyl)ethyl, hydroxyphenylmethyl, (3-fluorophenyl)hydroxymethyl, (4-fluorophenyl)hydroxymethyl or hydroxy(2-thienyl)methyl group,

(11) a compound wherein R 4 is a hydrogen atom, chlorine atom, bromine atom, methyl, ethyl, propyl, isopropyl, butyl, isobutyl, pentyl, isopentyl, neopentyl, hexyl, 2-ethylbutyl, 2,2,2-trifluoroethyl, 3,3,3-trifluoropropyl, 2-chloroethyl, hydroxymethyl, methoxymethyl, ethoxymethyl, isopropoxymethyl, 2-methoxyethyl, 2-ethoxyethyl, 2-isopropoxyethyl, isobutoxymethyl, sec-butoxymethyl, tert-butoxymethyl, 1-ethylpropoxymethyl, 2-fluoroethoxymethyl, cyclobutoxymethyl, cyclopropylmethoxymethyl, dimethylaminomethyl, cyclopropyl, cyclobutyl, cyclopropylmethyl, cyclobutylmethyl, cyclopropylhydroxymethyl, cyclobutylhydroxymethyl, 2-cyclopropylethyl, 2-cyclobutylethyl, 2-propenyl, 2-butenyl, 2-methyl-2-propenyl, 2-methyl-2-butenyl, 3-methyl-2-butenyl, 2,3-dimethyl-2-butenyl, ethynyl, 2-propynyl, 2-butynyl, 4-methyl-2-pentynyl, 1-hydroxy-2-propenyl, phenyl, 2-fluorophenyl, 4-fluorophenyl, 2,4-difluorophenyl, 2-chlorophenyl, 4-chlorophenyl, 4-cyanophenyl, 2-thienyl, 3-thienyl, 4-thiazolyl, 5-thiazolyl, 4-pyrazolyl, 6-methoxy-2-pyridyl, 6-methoxy-3-pyridyl, benzyl, 2-fluorobenzyl, 3-fluorobenzyl, 4-fluorobenzyl, 2,4-difluorobenzyl, 3,4-difluorobenzyl, 2-chlorobenzyl, 3-chlorobenzyl, 2-cyanobenzyl, 3-cyanobenzyl, 3-carboxybenzyl, 4-carboxybenzyl, 2-thienylmethyl, 5-cyano-2-thienylmethyl, 5-carboxy-2-thienylmethyl, 3-thienylmethyl, 5-cyano-3-thienylmethyl, 5-carboxy-3-thienylmethyl, 2-carboxy-4-thiazolylmethyl, 6-cyano-2-pyridylmethyl, 6-carboxy-2-pyridylmethyl, 6-methoxy-2-pyridylmethyl, 6-cyano-3-pyridylmethyl, 6-carboxy-3-pyridylmethyl, 6-methoxy-3-pyridylmethyl, 2-cyano-3-pyridylmethyl, 2-carboxy-3-pyridylmethyl, 2-cyano-4-pyridylmethyl, 2-carboxy-4-pyridylmethyl, phenethyl, 2-fluorophenethyl, 3-fluorophenethyl, 4-fluorophenethyl, 3-cyanophenethyl, 2-(2-thienyl)ethyl, 2-(6-cyano-2-pyridyl)ethyl, 2-(6-cyano-3-pyridyl)ethyl, 2-(2-cyano-3-pyridyl)ethyl, hydroxyphenylmethyl, (2-fluorophenyl)hydroxymethyl, (3-fluorophenyl)hydroxymethyl or (4-fluorophenyl)hydroxymethyl group,

(12) a compound wherein R 4 is a hydrogen atom, chlorine atom, bromine atom, methyl, ethyl, propyl, isopropyl, butyl, isobutyl, pentyl, isopentyl, hexyl, 2-ethylbutyl, 2,2,2-trifluoroethyl, 3,3,3-trifluoropropyl, 2-chloroethyl, hydroxymethyl, methoxymethyl, ethoxymethyl, isopropoxymethyl, 2-methoxyethyl, 2-ethoxyethyl, 2-isopropoxyethyl, isobutoxymethyl, sec-butoxymethyl, tert-butoxymethyl, 1-ethylpropoxymethyl, 2-fluoroethoxymethyl, cyclobutoxymethyl, cyclopropylmethoxymethyl, dimethylaminomethyl, cyclopropyl, cyclopropylmethyl, cyclopropylhydroxymethyl, 2-cyclopropylethyl, 2-propenyl, 2-butenyl, 2-methyl-2-propenyl, 2-methyl-2-butenyl, 3-methyl-2-butenyl, 2,3-dimethyl-2-butenyl, ethynyl, 2-propynyl, 2-butynyl, 4-methyl-2-pentynyl, 1-hydroxy-2-propenyl, phenyl, 2-thienyl, 3-thienyl, 4-pyrazolyl, benzyl, 2-fluorobenzyl, 3-fluorobenzyl, 4-fluorobenzyl, 2,4-difluorobenzyl, 3,4-difluorobenzyl, 2-chlorobenzyl, 3-chlorobenzyl, 2-cyanobenzyl, 3-cyanobenzyl, 3-carboxybenzyl, 2-thienylmethyl, 3-thienylmethyl, 6-methoxy-2-pyridylmethyl, 6-methoxy-3-pyridylmethyl, phenethyl, hydroxyphenylmethyl, (2-fluorophenyl)hydroxymethyl, (3-fluorophenyl)hydroxymethyl or (4-fluorophenyl)hydroxymethyl group,

(13) a compound wherein R 4 is a hydrogen atom, chlorine atom, bromine atom, methyl, ethyl, propyl, isopropyl, butyl, isobutyl, pentyl, isopentyl, hexyl, hydroxymethyl, methoxymethyl, ethoxymethyl, isopropoxymethyl, 2-methoxyethyl, 2-ethoxyethyl, isobutoxymethyl, sec-butoxymethyl, tert-butoxymethyl, 1-ethylpropoxymethyl, 2-fluoroethoxymethyl, cyclobutoxymethyl, cyclopropylmethoxymethyl, dimethylaminomethyl, cyclopropyl, cyclopropylmethyl, 2-cyclopropylethyl, 2-propenyl, ethynyl, 2-propynyl, 2-butynyl, 4-methyl-2-pentynyl, 1-hydroxy-2-propenyl, phenyl, 4-pyrazolyl, benzyl, 2-fluorobenzyl, 3-fluorobenzyl, 4-fluorobenzyl, 2-cyanobenzyl, 3-cyanobenzyl, 3-carboxybenzyl, 6-methoxy-2-pyridylmethyl, 6-methoxy-3-pyridylmethyl, phenethyl or hydroxyphenylmethyl group.

Also, in the above-mentioned groups of (1)-(2), (3)(5), (6)-(7), and (8)-(13), a larger number shows a preferred compound, and a compound obtained by optionally selecting R 1 from the groups (1)-(2), R 2 from the groups (3)-(5), R 3 from the groups (6)-(7), and R 4 from the groups (8)-(13), and also, these are optionally combined is a preferred compound.

Such a compound may be mentioned

(14) a compound wherein R 1 is a methyl or difluoromethyl group,

R 2 represents a cyclopropyl, cyclobutyl, cyclopentyl, cyclopropylmethyl, cyclobutylmethyl, ethyl or isopropyl group,

R 3 represents a hydrogen atom, and

R 4 represents a hydrogen atom, chlorine atom, bromine atom, methyl, ethyl, propyl, isopropyl, butyl, isobutyl, pentyl, isopentyl, neopentyl, hexyl, 2-ethylbutyl, 2,2,2-trifluoroethyl, 3,3,3-trifluoropropyl, 2-chloroethyl, hydroxymethyl, methoxymethyl, ethoxymethyl, isopropoxymethyl, 2-methoxyethyl, 2-ethoxyethyl, 2-isopropoxyethyl, isobutoxymethyl, sec-butoxymethyl, tert-butoxymethyl, 1-ethylpropoxymethyl, 2-fluoroethoxymethyl, cyclobutoxymethyl, cyclopropylmethoxymethyl, dimethylaminomethyl, cyclopropyl, cyclobutyl, cyclopropylmethyl, cyclobutylmethyl, cyclopropylhydroxymethyl, cyclobutylhydroxymethyl, 2-cyclopropylethyl, 2-cyclobutylethyl, 2-propenyl, 2-butenyl, 2-methyl-2-propenyl, 2-methyl-2-butenyl, 3-methyl-2-butenyl, 2,3-dimethyl-2-butenyl, ethynyl, 2-propynyl, 2-butynyl, 4-methyl-2-pentynyl, 1-hydroxy-2-propenyl, phenyl, 2-fluorophenyl, 4-fluorophenyl, 2,4-difluorophenyl, 2-chlorophenyl, 4-chlorophenyl, 4-cyanophenyl, 2-thienyl, 3-thienyl, 4-thiazolyl, 5-thiazolyl, 4-pyrazolyl, 6-methoxy-2-pyridyl, 6-methoxy-3-pyridyl, benzyl, 2-fluorobenzyl, 3-fluorobenzyl, 4-fluorobenzyl, 2,4-difluorobenzyl, 3,4-difluorobenzyl, 2-chlorobenzyl, 3-chlorobenzyl, 2-cyanobenzyl, 3-cyanobenzyl, 3-carboxybenzyl, 4-carboxybenzyl, 2-thienylmethyl, 5-cyano-2-thienylmethyl, 5-carboxy-2-thienylmethyl, 3-thienylmethyl, 5-cyano-3-thienylmethyl, 5-carboxy-3-thienylmethyl, 2-carboxy-4-thiazolylmethyl, 6-cyano-2-pyridylmethyl, 6-carboxy-2-pyridylmethyl, 6-methoxy-2-pyridylmethyl, 6-cyano-3-pyridylmethyl, 6-carboxy-3-pyridylmethyl, 2-cyano-3-pyridylmethyl, 6-methoxy-3-pyridylmethyl, 2-carboxy-3-pyridylmethyl, 2-cyano-4-pyridylmethyl, 2-carboxy-4-pyridylmethyl, phenethyl, 2-fluorophenethyl, 3-fluorophenethyl, 4-fluorophenethyl, 3-cyanophenethyl, 2-(2-thienyl)ethyl, 2-(6-cyano-2-pyridyl)ethyl, 2-(6-cyano-3-pyridyl)ethyl, 2-(2-cyano-3-pyridyl)ethyl, hydroxyphenylmethyl, (2-fluorophenyl)hydroxymethyl, (3-fluorophenyl)hydroxymethyl or (4-fluorophenyl)hydroxymethyl group,

(15) a compound wherein R 1 represents a methyl or difluoromethyl group,

R 2 represents a cyclopropyl, cyclobutyl, cyclopentyl, cyclopropylmethyl or isopropyl group,

R 3 represents a hydrogen atom, and

R 4 represents a hydrogen atom, chlorine atom, bromine atom, methyl, ethyl, propyl, isopropyl, butyl, isobutyl, pentyl, isopentyl, neopentyl, hexyl, 2-ethylbutyl, 2,2,2-trifluoroethyl, 3,3,3-trifluoropropyl, 2-chloroethyl, hydroxymethyl, methoxymethyl, ethoxymethyl, isopropoxymethyl, 2-methoxyethyl, 2-ethoxyethyl, 2-isopropoxyethyl, isobutoxymethyl, sec-butoxymethyl, tert-butoxymethyl, 1-ethylpropoxymethyl, 2-fluoroethoxymethyl, cyclobutoxymethyl, cyclopropylmethoxymethyl, dimethylaminomethyl, cyclopropyl, cyclobutyl, cyclopropylmethyl, cyclobutylmethyl, cyclopropylhydroxymethyl, cyclobutylhydroxymethyl, 2-cyclopropylethyl, 2-cyclobutylethyl, 2-propenyl, 2-butenyl, 2-methyl-2-propenyl, 2-methyl-2-butenyl, 3-methyl-2-butenyl, 2,3-dimethyl-2-butenyl, ethynyl, 2-propynyl, 2-butynyl, 4-methyl-2-pentynyl, 1-hydroxy-2-propenyl, phenyl, 2-fluorophenyl, 4-fluorophenyl, 2,4-difluorophenyl, 2-chlorophenyl, 4-chlorophenyl, 4-cyanophenyl, 2-thienyl, 3-thienyl, 4-thiazolyl, 5-thiazolyl, 4-pyrazolyl, 6-methoxy-2-pyridyl, 6-methoxy-3-pyridyl, benzyl, 2-fluorobenzyl, 3-fluorobenzyl, 4-fluorobenzyl, 2,4-difluorobenzyl, 3,4-difluorobenzyl, 2-chlorobenzyl, 3-chlorobenzyl, 2-cyanobenzyl, 3-cyanobenzyl, 3-carboxybenzyl, 4-carboxybenzyl, 2-thienylmethyl, 5-cyano-2-thienylmethyl, 5-carboxy-2-thienylmethyl, 3-thienylmethyl, 5-cyano-3-thienylmethyl, 5-carboxy-3-thienylmethyl, 2-carboxy-4-thiazolylmethyl, 6-cyano-2-pyridylmethyl, 6-carboxy-2-pyridylmethyl, 6-methoxy-2-pyridylmethyl, 6-cyano-3-pyridylmethyl, 6-carboxy-3-pyridylmethyl, 6-methoxy-3-pyridylmethyl, 2-cyano-3-pyridylmethyl, 2-carboxy-3-pyridylmethyl, 2-cyano-4-pyridylmethyl, 2-carboxy-4-pyridylmethyl, phenethyl, 2-fluorophenethyl, 3-fluorophenethyl, 4-fluorophenethyl, 3-cyanophenethyl, 2-(2-thienyl)ethyl, 2-(6-cyano-2-pyridyl)ethyl, 2-(6-cyano-3-pyridyl)ethyl, 2-(2-cyano-3-pyridyl)ethyl, hydroxyphenylmethyl, (2-fluorophenyl)hydroxymethyl, (3-fluorophenyl)hydroxymethyl or (4-fluorophenyl)hydroxymethyl group,

(16) a compound wherein R 1 represents a difluoromethyl group,

R 2 represents a cyclopropyl or cyclopropylmethyl group,

R 3 represents a hydrogen atom, and

R 4 represents a hydrogen atom, chlorine atom, bromine atom, methyl, ethyl, propyl, isopropyl, butyl, isobutyl, pentyl, isopentyl, hexyl, 2-ethylbutyl, 2,2,2-trifluoroethyl, 3,3,3-trifluoropropyl, 2-chloroethyl, hydroxymethyl, methoxymethyl, ethoxymethyl, isopropoxymethyl, 2-methoxyethyl, 2-ethoxyethyl, 2-isopropoxyethyl, isobutoxymethyl, sec-butoxymethyl, tert-butoxymethyl, 1-ethylpropoxymethyl, 2-fluoroethoxymethyl, cyclobutoxymethyl, cyclopropylmethoxymethyl, dimethylaminomethyl, cyclopropyl, cyclopropylmethyl, cyclopropylhydroxymethyl, 2-cyclopropylethyl, 2-propenyl, 2-butenyl, 2-methyl-2-propenyl, 2-methyl-2-butenyl, 3-methyl-2-butenyl, 2,3-dimethyl-2-butenyl, ethynyl, 2-propynyl, 2-butynyl, 4-methyl-2-pentynyl, 1-hydroxy-2-propenyl, phenyl, 2-thienyl, 3-thienyl, 4-pyrazolyl, benzyl, 2-fluorobenzyl, 3-fluorobenzyl, 4-fluorobenzyl, 2,4-difluorobenzyl, 3,4-difluorobenzyl, 2-chlorobenzyl, 3-chlorobenzyl, 2-cyanobenzyl, 3-cyanobenzyl, 3-carboxybenzyl, 2-thienylmethyl, 3-thienylmethyl, 6-methoxy-2-pyridylmethyl, 6-methoxy-3-pyridylmethyl, phenethyl, hydroxyphenylmethyl, (2-fluorophenyl)hydroxylmethyl, (3-fluorophenyl)hydroxymethyl or (4-fluorophenyl)hydroxymethyl group,

(17) a compound wherein R 1 represents a difluoromethyl group,

R 2 represents a cyclopropyl or cyclopropylmethyl group,

R 3 represents a hydrogen atom, and

R 4 represents a hydrogen atom, chlorine atom, bromine atom, methyl, ethyl, propyl, isopropyl, butyl, isobutyl, pentyl, isopentyl, hexyl, hydroxymethyl, methoxymethyl, ethoxymethyl, isopropoxymethyl, 2-methoxyethyl, 2-ethoxyethyl, isobutoxymethyl, sec-butoxymethyl, tert-butoxymethyl, 1-ethylpropoxymethyl, 2-fluoroethoxymethyl, cyclobutoxymethyl, cyclopropylmethoxymethyl, dimethylaminomethyl, cyclopropyl, cyclopropylmethyl, 2-cyclopropylethyl, 2-propenyl, ethynyl, 2-propynyl, 2-butynyl, 4-methyl-2-pentynyl, 1-hydroxy-2-propenyl, phenyl, 4-pyrazolyl, benzyl, 2-fluorobenzyl, 3-fluorobenzyl, 4-fluorobenzyl, 2-cyanobenzyl, 3-cyanobenzyl, 3-carboxybenzyl, 6-methoxy-2-pyridylmethyl, 6-methoxy-3-pyridylmethyl, phenethyl or hydroxyphenylmethyl group,

(18) the pyrrolopyridazinone compound is a compound of

2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one,

3-chloro-2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one,

3-bromo-2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one,

2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-3-methyl-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one,

2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-3-ethyl-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one,

2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-3-propyl-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one,

2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-3-isopropyl-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one,

3-butyl-2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one,

2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-3-isobutyl-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one,

2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-3-pentyl-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one,

2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-3-hexyl-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one,

2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-3-hydroxymethyl-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one,

2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-3-methoxymethyl-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one,

2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-3-(2-methoxyethyl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one,

2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-3-ethoxymethyl-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one,

2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-3-(2-ethoxyethyl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one,

2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-3-isopropoxymethyl-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one,

2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-3-(2-fluoroethoxymethyl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one,

3-cyclobutoxymethyl-2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one,

2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-3-cyclopropylmethoxymethyl-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one,

2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-3-dimethylaminomethyl-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one,

2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-3-cyclopropyl-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one,

2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-3-cyclopropylmethyl-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one,

2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-3-(2-cyclopropylethyl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one,

2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-3-(2-propenyl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one,

2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-3-ethynyl-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one,

2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-3-(2-propynyl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one,

3-(2-butynyl)-2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one,

2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-3-(4-methyl-2-pentynyl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one,

2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-3-(1-hydroxy-2-propenyl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one,

2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-3-phenyl-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one,

2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-3-(4-pyrazolyl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one,

3-benzyl-2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one,

2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-3-(2-fluorobenzyl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one,

2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-3-(3-fluorobenzyl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one,

2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-3-(4-fluorobenzyl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one,

3-(2-cyanobenzyl)-2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one,

3-(3-cyanobenzyl)-2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one,

3-(3-carboxybenzyl)-2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one,

2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-3-(6-methoxy-2-pyridylmethyl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one,

2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-3-(6-methoxy-3-pyridylmethyl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one,

2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-3-phenethyl-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one,

2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-3-hydroxyphenylmethyl-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one,

2-(3-cyclopropylmethoxy-4-difluoromethoxyphenyl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one,

3-chloro-2-(3-cyclopropylmethoxy-4-difluoromethoxyphenyl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one,

2-(3-cyclopropylmethoxy-4-difluoromethoxyphenyl)-3-ethyl-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one,

2-(3-cyclopropylmethoxy-4-difluoromethoxyphenyl)-3-phenyl-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one,

2-(4-difluoromethoxy-3-isopropoxyphenyl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one,

3-chloro-2-(4-difluoromethoxy-3-isopropoxyphenyl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one,

3-bromo-2-(4-difluoromethoxy-3-isopropoxyphenyl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one,

2-(3-cyclobutoxy-4-difluoromethoxyphenyl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one,

3-chloro-2-(3-cyclobutoxy-4-difluoromethoxyphenyl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one,

3-bromo-2-(3-cyclobutoxy-4-difluoromethoxyphenyl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one,

2-(3-cyclobutoxy-4-difluoromethoxyphenyl)-3-phenyl-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one,

3-chloro-2-(3-cyclopropoxy-4-methoxyphenyl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one,

3-bromo-2-(3-cyclopropoxy-4-methoxyphenyl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one,

3-butyl-2-(3-cyclopropoxy-4-methoxyphenyl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one,

3-chloro-2-(3-cyclopropylmethoxy-4-methoxyphenyl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one,

3-chloro-2-(3-isopropoxy-4-methoxyphenyl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one,

3-chloro-2-(3-cyclobutoxy-4-methoxyphenyl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one,

2-(3-cyclopentoxy-4-methoxyphenyl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one,

2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-3-isobutoxymethyl-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one,

3-(sec-butoxymethyl)-2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one,

3-(tert-butoxymethyl)-2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one, or

2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-3-(1-ethylpropoxymethyl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one,

(19) a compound wherein R 1 represents a methyl or difluoromethyl group,

the substituted oxygen-containing hetero ring formed by R 3 in combination with the group —O—R 2 represents a 2,2-(1,4-butylene)-tetrahydrofuran ring, 6,6-(1,3-propylene)-3,6-dihydro-2H-pyran ring, 6,6-(1,4-butylene)-3,6-dihydro-2H-pyran ring, 6-cyclopropyl-3,6-dihydro-2H-pyran ring or 6,6-dimethyl-3,6-dihydro-2H-pyran ring, and

R 4 represents a hydrogen atom, chlorine atom, bromine atom, methyl, ethyl, propyl, isopropyl, butyl, isobutyl, pentyl, isopentyl, neopentyl, hexyl, 2-ethylbutyl, 2,2,2-trifluoroethyl, 3,3,3-trifluoropropyl, 2-chloroethyl, hydroxymethyl, methoxymethyl, ethoxymethyl, isopropoxymethyl, 2-methoxyethyl, 2-ethoxyethyl, 2-isopropoxyethyl, isobutoxymethyl, sec-butoxymethyl, tert-butoxymethyl, 1-ethylpropoxymethyl, 2-fluoroethoxymethyl, cyclobutoxymethyl, cyclopropylmethoxymethyl, dimethylaminomethyl, cyclopropyl, cyclobutyl, cyclopropylmethyl, cyclobutylmethyl, cyclopropylhydroxymethyl, cyclobutylhydroxymethyl, 2-cyclopropylethyl, 2-cyclobutylethyl, 2-propenyl, 2-butenyl, 2-methyl-2-propenyl, 2-methyl-2-butenyl, 3-methyl-2-butenyl, 2,3-dimethyl-2-butenyl, ethynyl, 2-propynyl, 2-butynyl, 4-methyl-2-pentynyl, 1-hydroxy-2-propenyl, phenyl, 2-fluorophenyl, 4-fluorophenyl, 2,4-difluorophenyl, 2-chlorophenyl, 4-chlorophenyl, 4-cyanophenyl, 2-thienyl, 3-thienyl, 4-thiazolyl, 5-thiazolyl, 4-pyrazolyl, 6-methoxy-2-pyridyl, 6-methoxy-3-pyridyl, benzyl, 2-fluorobenzyl, 3-fluorobenzyl, 4-fluorobenzyl, 2,4-difluorobenzyl, 3,4-difluorobenzyl, 2-chlorobenzyl, 3-chlorobenzyl, 2-cyanobenzyl, 3-cyanobenzyl, 3-carboxybenzyl, 4-carboxybenzyl, 2-thienylmethyl, 5-cyano-2-thienylmethyl, 5-carboxy-2-thienylmethyl, 3-thienylmethyl, 5-cyano-3-thienylmethyl, 5-carboxy-3-thienylmethyl, 2-carboxy-4-thiazolylmethyl, 6-cyano-2-pyridylmethyl, 6-carboxy-2-pyridylmethyl, 6-methoxy-2-pyridylmethyl, 6-cyano-3-pyridylmethyl, 6-carboxy-3-pyridylmethyl, 6-methoxy-3-pyridylmethyl, 2-cyano-3-pyridylmethyl, 2-carboxy-3-pyridylmethyl, 2-cyano-4-pyridylmethyl, 2-carboxy-4-pyridylmethyl, phenethyl, 2-fluorophenethyl, 3-fluorophenethyl, 4-fluorophenethyl, 3-cyanophenethyl, 2-(2-thienyl)ethyl, 2-(6-cyano-2-pyridyl)ethyl, 2-(6-cyano-3-pyridyl)ethyl, 2-(2-cyano-3-pyridyl)ethyl, hydroxyphenylmethyl, (2-fluorophenyl)hydroxymethyl, (3-fluorophenyl)hydroxymethyl or (4-fluorophenyl)hydroxymethyl group,

(20) a compound wherein R 1 represents a methyl or difluoromethyl group,

the substituted oxygen-containing hetero ring formed by R 3 in combination with the group —O—R 2 represents a 2,2-(1,4-butylene)-tetrahydrofuran ring, 6,6-(1,3-propylene)-3,6-dihydro-2H-pyran ring, 6,6-(1,4-butylene)-3,6-dihydro-2H-pyran ring, 6-cyclopropyl-3,6-dihydro-2H-pyran ring or 6,6-dimethyl-3,6-dihydro-2H-pyran ring, and

R 4 represents a hydrogen-atom, chlorine atom, bromine atom, methyl, ethyl, propyl, isopropyl, butyl, isobutyl, pentyl, isopentyl, hexyl, 2-ethylbutyl, 2,2,2-trifluoroethyl, 3,3,3-trifluoropropyl, 2-chloroethyl, hydroxymethyl, methoxymethyl, ethoxymethyl, isopropoxymethyl, 2-methoxyethyl, 2-ethoxyethyl, 2-isopropoxyethyl, isobutoxymethyl, sec-butoxymethyl, tert-butoxymethyl, 1-ethylpropoxymethyl, 2-fluoroethoxymethyl, cyclobutoxymethyl, cyclopropylmethoxymethyl, dimethylaminomethyl, cyclopropyl, cyclopropylmethyl, cyclopropylhydroxymethyl, 2-cyclopropylethyl, 2-propenyl, 2-butenyl, 2-methyl-2-propenyl, 2-methyl-2-butenyl, 3-methyl-2-butenyl, 2,3-dimethyl-2-butenyl, ethynyl, 2-propynyl, 2-butynyl, 4-methyl-2-pentynyl, 1-hydroxy-2-propenyl, phenyl, 2-thienyl, 3-thienyl, 4-pyrazolyl, benzyl, 2-fluorobenzyl, 3-fluorobenzyl, 4-fluorobenzyl, 2,4-difluorobenzyl, 3,4-difluorobenzyl, 2-chlorobenzyl, 3-chlorobenzyl, 2-cyanobenzyl, 3-cyanobenzyl, 3-carboxybenzyl, 2-thienylmethyl, 3-thienylmethyl, 6-methoxy-2-pyridylmethyl, 6-methoxy-3-pyridylmethyl, phenethyl, hydroxyphenylmethyl, (2-fluorophenyl)hydroxylmethyl, (3-fluorophenyl)hydroxymethyl or (4-fluorophenyl)hydroxymethyl group,

(21) a compound wherein R 1 represents a difluoromethyl group,

the substituted oxygen-containing hetero ring formed by R 3 in combination with the group —O—R 2 represents a 2,2-(1,4-butylene)-tetrahydrofuran ring, 6,6-(1,3-propylene)-3,6-dihydro-2H-pyran ring, 6,6-(1,4-butylene)-3,6-dihydro-2H-pyran ring, 6-cyclopropyl-3,6-dihydro-2H-pyran ring or 6,6-dimethyl-3,6-dihydro-2H-pyran ring, and

R 4 represents a hydrogen atom, chlorine atom, bromine atom, methyl, ethyl, propyl, isopropyl, butyl, isobutyl, pentyl, isopentyl, hexyl, 2-ethylbutyl, 2,2,2-trifluoroethyl, 3,3,3-trifluoropropyl, 2-chloroethyl, hydroxymethyl, methoxymethyl, ethoxymethyl, isopropoxymethyl, 2-methoxyethyl, 2-ethoxyethyl, 2-isopropoxyethyl, isobutoxymethyl, sec-butoxymethyl, tert-butoxymethyl, 1-ethylpropoxymethyl, 2-fluoroethoxymethyl, cyclobutoxymethyl, cyclopropylmethoxymethyl, dimethylaminomethyl, cyclopropyl, cyclopropylmethyl, cyclopropylhydroxymethyl, 2-cyclopropylethyl, 2-propenyl, 2-butenyl, 2-methyl-2-propenyl, 2-methyl-2-butenyl, 3-methyl-2-butenyl, 2,3-dimethyl-2-butenyl, ethynyl, 2-propynyl, 2-butynyl, 4-methyl-2-pentynyl, 1-hydroxy-2-propenyl, phenyl, 2-thienyl, 3-thienyl, 4-pyrazolyl, benzyl, 2-fluorobenzyl, 3-fluorobenzyl, 4-fluorobenzyl, 2,4-difluorobenzyl, 3,4-difluorobenzyl, 2-chlorobenzyl, 3-chlorobenzyl, 2-cyanobenzyl, 3-cyanobenzyl, 3-carboxybenzyl, 2-thienylmethyl, 3-thienylmethyl, 6-methoxy-2-pyridylmethyl, 6-methoxy-3-pyridylmethyl, phenethyl, hydroxyphenylmethyl, (2-fluorophenyl)hydroxylmethyl, (3-fluorophenyl)hydroxymethyl or (4-fluorophenyl)hydroxymethyl group,

(22) a compound wherein R 1 represents a difluoromethyl group,

the substituted oxygen-containing hetero ring formed by R 3 in combination with the group —O—R 2 represents a 2,2-(1,4-butylene)-tetrahydrofuran ring, 6,6-(1,3-propylene)-3,6-dihydro-2H-pyran ring, 6,6-(1,4-butylene)-3,6-dihydro-2H-pyran ring, 6-cyclopropyl-3,6-dihydro-2H-pyran ring or 6,6-dimethyl-3,6-dihydro-2H-pyran ring, and

R 4 represents a hydrogen atom, chlorine atom, bromine atom, methyl, ethyl, propyl, isopropyl, butyl, isobutyl, pentyl, isopentyl, hexyl, hydroxymethyl, methoxymethyl, ethoxymethyl, isopropoxymethyl, 2-methoxyethyl, 2-ethoxyethyl, isobutoxymethyl, sec-butoxymethyl, tert-butoxymethyl, 1-ethylpropoxymethyl, 2-fluoroethoxymethyl, cyclobutoxymethyl, cyclopropylmethoxymethyl, dimethylaminomethyl, cyclopropyl, cyclopropylmethyl, 2-cyclopropylethyl, 2-propenyl, ethynyl, 2-propynyl, 2-butynyl, 4-methyl-2-pentynyl, 1-hydroxy-2-propenyl, phenyl, 4-pyrazolyl, benzyl, 2-fluorobenzyl, 3-fluorobenzyl, 4-fluorobenzyl, 2-cyanobenzyl, 3-cyanobenzyl, 3-carboxybenzyl, 6-methoxy-2-pyridylmethyl, 6-methoxy-3-pyridylmethyl, phenethyl or hydroxyphenylmethyl group,

(23) a compound wherein the pyrrolopyridazinone compound is a compound of 3-chloro-2-(8-difluoromethoxy-2,2-dimethyl-2H-chromen-5-yl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one,

2-(8-difluoromethoxy-2,2-dimethyl-2H-chromen-5-yl)-3-methyl-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one,

2-(8-difluoromethoxy-2,2-dimethyl-2H-chromen-5-yl)-3-ethyl-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one,

3-cyclopropyl-2-(8-difluoromethoxy-2,2-dimethyl-2H-chromen-5-yl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one,

2-(2-cyclopropyl-8-difluoromethoxy-2H-chromen-5-yl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one,

3-chloro-2-(8-difluoromethoxy-2H-chromen-2-spiro-1′-cyclobutan-5-yl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one,

3-chloro-2-(8-difluoromethoxy-2H-chromen-2-spiro-1′-cyclopentan-5-yl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one,

2-(7-difluoromethoxy-2,3-dihydrobenzofuran-2-spiro-1′-cyclopentan-4-yl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one,

2-(2,3-dihydro-7-methoxybenzofuran-2-spiro-1′-cyclopentan-4-yl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one, or

3-chloro-2-(2,3-dihydro-7-methoxybenzofuran-2-spiro-1′-cyclopentan-4-yl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one, etc.

Incidentally, the present invention also provides

(24) a pharmaceutical composition which contains a compound represented by the above-mentioned formula (1), a pyrrolopyridazinone compound or a pharmaceutically acceptable salt thereof as described in any one of (1) to (17) as an effective ingredient, and

(25) a pharmaceutical composition as described in (24), wherein the pharmaceutical composition is a composition for prevention or treatment of a respiratory disease and/or an inflammatory disease.

As preferred compounds having the formula (1) in the present invention, those compounds of Table 1 to Table 5 can be specifically exemplified. Incidentally, the compound described in Table 1 has a structure represented by the formula (1a), the compound described in Table 2 has a structure represented by the formula (1b), the compound described in Table 3 has a structure represented by the formula (1c), the compound described in Table 4 has a structure represented by the formula (1d), and the compound described in Table 5 has a structure represented by the formula (1e).

Incidentally, the abbreviations in the above-mentioned respective Tables mean the following groups.

Me: methyl group, Et: ethyl group, Pr: propyl group, Bu: butyl group, Pent: pentyl group, iPr: isopropyl group, iBu: isobutyl group, sBu: sec-butyl group, tBu: tert-butyl group, cPr: cyclopropyl group, cBu: cyclobutyl group, cPent: cyclopentyl group, Ac: acetyl group, cPr(1-OH): 1-hydroxycyclopropyl group, cBu(1-OH): 1-hydroxycyclobutyl group, Ph: phenyl group, 2-F-Ph: 2-fluorophenyl group, 3-F-Ph: 3-fluorophenyl group, 4-F-Ph: 4-fluorophenyl group, 2,4-diF-Ph: 2,4-difluorophenyl group, 2,6-diF-Ph: 2,6-difluorophenyl group, 3,4-diF-Ph: 3,4-difluorophenyl group, 2-Cl-Ph: 2-chlorophenyl group, 3-Cl-Ph: 3-chlorophenyl group, 4-Cl-Ph: 4-chlorophenyl group, 2,4-diCl-Ph: 2,4-dichlorophenyl group, 2,6-diCl-Ph: 2,6-dichlorophenyl group, 3,4-diCl-Ph: 3,4-dichlorophenyl group, 3-CN-Ph: 3-cyanophenyl group, 4-CN-Ph: 4-cyanophenyl group, 3-NO 2 -Ph: 3-nitrophenyl group, 4-NO 2 -Ph: 4-nitrophenyl group, 3-COOH-Ph: 3-carboxyphenyl group, 4-COOH-Ph: 4-carboxyphenyl group, 3-CF 3 -Ph: 3-trifluoromethylphenyl group, 4-CF 3 -Ph: 4-trifluoromethylphenyl group, 3-C(OH) (Me) 2 -Ph: 3-(1-hydroxy-1-methylethyl)phenyl group, 4-C(OH) (Me) 2 -Ph: 4-(1-hydroxy-1-methylethyl)phenyl group, 3-C(OH) (CF 3 ) 2 -Ph: 3-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)phenyl group, 4-C(OH) (CF 3 ) 2 -Ph: 4-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)phenyl group, 3-C(COOH)(Me) 2 -Ph: 3-(1-carboxy-1-methylethyl)phenyl group, 4-C(COOH) (Me) 2 -Ph: 4-(1-carboxy-1-methylethyl)phenyl group, 3-OMe-Ph: 3-methoxyphenyl group, 4-OMe-Ph: 4-methoxyphenyl group, 3-OEt-Ph: 3-ethoxyphenyl group, 4-OEt-Ph: 4-ethoxyphenyl group, 3-COOMe-Ph: 3-methoxycarbonylphenyl group, 4-COOMe-Ph: 4-methoxycarbonylphenyl group, 3-COOEt-Ph: 3-ethoxycarbonylphenyl group, 4-COOEt-Ph: 4-ethoxycarbonylphenyl group, Th-2-yl: 2-thienyl group, 4-CN—Th-2-yl: 4-cyano-2-thienyl group, 5-CN—Th-2-yl: 5-cyano-2-thienyl group, 4-COOH—Th-2-yl: 4-carboxy-2-thienyl group, 5-COOH—Th-2-yl: 5-carboxy-2-thienyl group, 4-Me-Th-2-yl: 4-methyl-2-thienyl group, 5-Me-Th-2-yl: 5-methyl-2-thienyl group, 4-CF 3 —Th-2-yl: 4-trifluoromethyl-2-thienyl group, 5-CF 3 —Th-2-yl: 5-trifluoromethyl-2-thienyl group, 4-C(OH)(Me) 2 -Th-2-yl: 4-(1-hydroxy-1-methylethyl)-2-thienyl group, 5-C(OH)(Me) 2 -Th-2-yl: 5-(1-hydroxy-1-methylethyl)-2-thienyl group, 4-C(OH)(CF 3 ) 2 —Th-2-yl: 4-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-2-thienyl group, 5-C(OH)(CF 3 ) 2 —Th-2-yl: 5-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-2-thienyl group, 4-C(COOH)(Me) 2 -Th-2-yl: 4-(1-carboxy-1-methylethyl)-2-thienyl group, 5-C(COOH)(Me) 2 -Th-2-yl: 5-(1-carboxy-1-methylethyl)-2-thienyl group, Th-3-yl: 3-thienyl group, 4-CN—Th-3-yl: 4-cyano-3-thienyl group, 5-CN—Th-3-yl: 5-cyano-3-thienyl group, 4-COOH—Th-3-yl: 4-carboxy-3-thienyl group, 5-COOH—Th-3-yl: 5-carboxy-3-thienyl group, 4-Me-Th-3-yl: 4-methyl-3-thienyl group, 5-Me-Th-3-yl: 5-methyl-3-thienyl group, 4-CF 3 —Th-3-yl: 4-trifluoromethyl-3-thienyl group, 5-CF 3 —Th-3-yl: 5-trifluoromethyl-3-thienyl group, 5-Et-Th-3-yl: 5-ethyl-3-thienyl group, 5-C(OH) (Me) 2 -Th-3-yl: 5-(1-hydroxy-1-methylethyl)-3-thienyl group, 5-C(OH) (CF 3 ) 2 —Th-3-yl: 5-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-3-thienyl group, 5-C(COOH) (Me) 2 -Th-3-yl: 5-(1-carboxy-1-methylethyl)-3-thienyl group, 5-COOMe-Th-3-yl: 5-methoxycarbonyl-3-thienyl group, Thz-4-yl: 4-thiazolyl group, 2-CN-Thz-4-yl: 2-cyano-4-thiazolyl group, 2-COOH-Thz-4-yl: 2-carboxy-4-thiazolyl group, 2-Me-Thz-4-yl: 2-methyl-4-thiazolyl group, 2-Et-Thz-4-yl: 2-ethyl-4-thiazolyl group, 2-Pr-Thz-4-yl: 2-propyl-4-thiazolyl group, 2-iPr-Thz-4-yl: 2-isopropyl-4-thiazolyl group, 2-CF 3 -Thz-4-yl: 2-trifluoromethyl-4-thiazolyl group, 2-C(OH) (Me) 2 -Thz-4-yl: 2-(1-hydroxy-1-methylethyl)-4-thiazolyl group, 2-C(OH) (CF 3 ) 2 -Thz-4-yl: 2-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-4-thiazolyl group, 2-C(COOH) (Me) 2 -Thz-4-yl: 2-(1-carboxy-1-methylethyl)-4-thiazolyl group, 2-COOMe-Thz-4-yl: 2-methoxycarbonyl-4-thiazolyl group, Thz-5-yl: 5-thiazolyl group, 2-CN-Thz-5-yl: 2-cyano-5-thiazolyl group, 2-COOH-Thz-5-yl: 2-carboxy-5-thiazolyl group, 2-Me-Thz-5-yl: 2-methyl-5-thiazolyl group, 2-Et-Thz-5-yl: 2-ethyl-5-thiazolyl group, 2-CF 3 -Thz-5-yl: 2-trifluoromethyl-5-thiazolyl group, 2-C(OH) (Me) 2 -Thz-5-yl: 2-(1-hydroxy-1-methylethyl)-5-thiazolyl group, 2-C(OH)(CF 3 ) 2 -Thz-5-yl: 2-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-5-thiazolyl group, 2-C(COOH)(Me) 2 -Thz-5-yl: 2-(1-carboxy-1-methylethyl)-5-thiazolyl group, 2-COOMe-Thz-5-yl: 2-methoxycarbonyl-5-thiazolyl group, 2-COOEt-Thz-5-yl: 2-ethoxycarbonyl-5-thiazolyl group, 2-COOPr-Thz-5-yl: 2-propoxycarbonyl-5-thiazolyl group, 2-COOiPr-Thz-5-yl: 2-isopropoxycarbonyl-5-thiazolyl group, Pyz-4-yl: 4-pyrazolyl group, 6-CN-Py-2-yl: 6-cyano-2-pyridyl group, 6-COOH-Py-2-yl: 6-carboxy-2-pyridyl group, 6-CF 3 -Py-2-yl: 6-trifluoromethyl-2-pyridyl group, 6-OMe-Py-2-yl: 6-methoxy-2-pyridyl group, 6-OEt-Py-2-yl: 6-ethoxy-2-pyridyl group, 6-COOMe-Py-2-yl: 6-methoxycarbonyl-2-pyridyl group, 6-COOEt-Py-2-yl: 6-ethoxycarbonyl-2-pyridyl group, 6-C(OH)(Me) 2 -Py-2-yl: 6-(1-hydroxy-1-methylethyl)-2-pyridyl group, 6-C(OH)(CF 3 ) 2 -Py-2-yl: 6-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-2-pyridyl group, 6-C(COOH)(Me) 2 -Py-2-yl: 6-(1-carboxy-1-methylethyl)-2-pyridyl group, 6-CN-Py-3-yl: 6-cyano-3-pyridyl group, 6-COOH-Py-3-yl: 6-carboxy-3-pyridyl group, 6-CF 3 -Py-3-yl: 6-trifluoromethyl-3-pyridyl group, 6-OMe-Py-3-yl: 6-methoxy-3-pyridyl group, 6-OEt-Py-3-yl: 6-ethoxy-3-pyridyl group, 6-COOMe-Py-3-yl: 6-methoxycarbonyl-3-pyridyl group, 6-COOEt-Py-3-yl: 6-ethoxycarbonyl-3-pyridyl group, 6-C(OH)(Me) 2 -Py-3-yl: 6-(1-hydroxy-1-methylethyl)-3-pyridyl group, 6-C(OH)(CF 3 ) 2 -Py-3-yl: 6-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-3-pyridyl group, 6-C(COOH)(Me) 2 -Py-3-yl: 6-(1-carboxy-1-methylethyl)-3-pyridyl group, 2-CN-Py-3-yl: 2-cyano-3-pyridyl group, 2-COOH-Py-3-yl: 2-carboxy-3-pyridyl group, 2-CF 3 -Py-3-yl: 2-trifluoromethyl-3-pyridyl group, 2-OMe-Py-3-yl: 2-methoxy-3-pyridyl group, 2-OEt-Py-3-yl: 2-ethoxy-3-pyridyl group, 2-OPr-Py-3-yl: 2-propoxy-3-pyridyl group, 2-COOMe-Py-3-yl: 2-methoxycarbonyl-3-pyridyl group, 2-COOEt-Py-3-yl: 2-ethoxycarbonyl-3-pyridyl group, 2-COOPr-Py-3-yl: 2-propoxycarbonyl-3-pyridyl group, 2-C(OH) (Me) 2 -Py-3-yl: 2-(1-hydroxy-1-methylethyl)-3-pyridyl group, 2-C(OH) (CF 3 ) 2 -Py-3-yl: 2-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-3-pyridyl group, 2-C(COOH) (Me) 2 -Py-3-yl: 2-(1-carboxy-1-methylethyl)-3-pyridyl group, 2-CN-Py-4-yl: 2-cyano-4-pyridyl group, 2-COOH-Py-4-yl: 2-carboxy-4-pyridyl group, 2-CF 3 -Py-4-yl: 2-trifluoromethyl-4-pyridyl group, 2-OMe-Py-4-yl: 2-methoxy-4-pyridyl group, 2-OEt-Py-4-yl: 2-ethoxy-4-pyridyl group, 2-OPr-Py-4-yl: 2-propoxy-4-pyridyl group, 2-COOMe-Py-4-yl: 2-methoxycarbonyl-4-pyridyl group, 2-COOEt-Py-4-yl: 2-ethoxycarbonyl-4-pyridyl group, 2-C(OH) (Me) 2 -Py-4-yl: 2-(1-hydroxy-1-methylethyl)-4-pyridyl group, 2-C(OH) (CF 3 ) 2 -Py-4-yl: 2-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)-4-pyridyl group, 2-C(COOH) (Me) 2 -Py-4-yl: 2-(1-carboxy-1-methylethyl)-4-pyridyl group, Bn: benzyl group, 2-F-Bn: 2-fluorobenzyl group, 3-F-Bn: 3-fluorobenzyl group, 4-F-Bn: 4-fluorobenzyl group, 2,4-diF-Bn: 2,4-difluorobenzyl group, 3,4-diF-Bn: 3,4-difluorobenzyl group, 2—Cl-Bn: 2-chlorobenzyl group, 3—Cl-Bn: 3-chlorobenzyl group, 4—Cl-Bn: 4-chlorobenzyl group, 2,4-diCl-Bn: 2,4-dichlorobenzyl group, 3,4-diCl-Bn: 3,4-dichlorobenzyl group, 2-CN-Bn: 2-cyanobenzyl group, 3-CN-Bn: 3-cyanobenzyl group, 4-CN-Bn: 4-cyanobenzyl group, 3-NO 2 -Bn: 3-nitrobenzyl group, 3-COOH-Bn: 3-carboxybenzyl group, 4-COOH-Bn: 4-carboxybenzyl group, 3-CF 3 -Bn: 3-trifluoromethylbenzyl group, 4-CF 3 -Bn: 4-trifluoromethylbenzyl group, 3-C(OH) (Me) 2 -Bn: 3-(1-hydroxy-1-methylethyl)benzyl group, 4-C(OH) (Me) 2 -Bn: 4-(1-hydroxy-1-methylethyl)benzyl group, 3-C(OH)(CF 3 ) 2 -Bn: 3-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)benzyl group, 4-C(OH)(CF 3 ) 2 -Bn: 4-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl)benzyl group, 4-C(COOH) (Me) 2 -Bn: 4-(1-carboxy-1-methylethyl)benzyl group, 3-OMe-Bn: 3-methoxybenzyl group, 4-OMe-Bn: 4-methoxybenzyl group, 3-COOMe-Bn: 3-methoxycarbonylbenzyl group, or 4-COOMe-Bn: 4-methoxycarbonylbenzyl group.

In the above-mentioned Tables, more preferred are compounds of Compounds Nos. 1-1, 1-2, 1-3, 1-4, 1-5, 1-6, 1-7, 1-8, 1-9, 1-10, 1-11, 1-12, 1-14, 1-15, 1-16, 1-29, 1-30, 1-31, 1-32, 1-33, 1-34, 1-38, 1-39, 1-40, 1-41, 1-42, 1-43, 1-46, 1-47, 1-48, 1-50, 1-51, 1-52, 1-56, 1-60, 1-61, 1-66, 1-70, 1-71, 1-78, 1-79, 1-86, 1-87, 1-90, 1-102, 1-112, 1-123, 1-124, 1-131, 1-132, 1-139, 1-140, 1-147, 1-155, 1-156, 1-163, 1-164, 1-167, 1-168, 1-177, 1-178, 1-182, 1-183, 1-192, 1-193, 1-197, 1-207, 1-208, 1-209, 1-210, 1-211, 1-212, 1-213, 1-214, 1-215, 1-216, 1-217, 1-218, 1-219, 1-220, 1-221, 1-224, 1-225, 1-226, 1-230, 1-231, 1-232, 1-233, 1-236, 1-237, 1-238, 1-241, 1-242, 1-245, 1-246, 1-247, 1-248, 1-249, 1-252, 1-254, 1-259, 1-261, 1-263, 1-265, 1-268, 1-269, 1-272, 1-273, 1-275, 1-280, 1-282, 1-284, 1-286, 1-288, 1-295, 1-297, 1-299, 1-301, 1-303, 1-309, 1-310, 1-311, 1-312, 1-316, 1-317, 1-318, 1-321, 1-322, 1-323, 1-324, 1-326, 1-327, 1-328, 1-334, 1-335, 1-336, 1-337, 1-338, 1-342, 1-343, 1-345, 1-346, 1-347, 1-348, 1-352, 1-353, 1-355, 1-356, 1-357, 1-358, 1-364, 1-365, 1-367, 1-378, 1-379, 1-380, 1-381, 1-382, 1-383, 1-384, 1-385, 1-386, 1-387, 1-388, 1-389, 1-390, 1-391, 1-392, 1-393, 1-394, 1-395, 1-396, 1-403, 1-404, 1-406, 1-407, 1-408, 1-410, 1-414, 1-415, 1-416, 1-418, 1-421, 1-422, 1-423, 1-426, 1-427, 1-429, 1-430, 1-433, 1-434, 1-436, 1-437, 1-439, 1-440, 1-441, 1-442, 1-443, 1-445, 1-446, 1-447, 1-448, 1-449, 1-451, 1-452, 1-453, 1-454, 1-455, 1-457, 1-458, 1-459, 1-460, 1-461, 1-462, 1-463, 1-464, 1-465, 1-468, 1-470, 1-472, 1-474, 1-476, 1-477, 1-479, 1-481, 1-482, 1-483, 1-484, 1-485, 1-486, 1-487, 1-488, 1-489, 1-490, 1-491, 1-492, 1-493, 1-495, 1-496, 1-498, 1-499, 1-500, 1-503, 1-504, 1-506, 1-509, 1-510, 1-511, 1-512, 1-513, 1-514, 1-515, 1-516, 1-517, 1-518, 1-519, 1-520, 1-521, 1-522, 1-524, 1-528, 1-529, 1-532, 1-534, 1-536, 1-537, 1-538, 1-539, 1-540, 1-545, 1-546, 1-547, 1-551, 1-553, 1-554, 1-555, 1-556, 1-558, 1-563, 1-568, 1-575, 1-582, 1-586, 1-592, 1-598, 1-601, 1-602, 1-603, 1-604, 1-605, 1-607, 1-609, 1-610, 1-611, 1-614, 1-616, 1-620, 1-624, 1-625, 1-627, 1-628, 1-631, 1-632, 1-635, 1-640, 1-645, 1-650, 1-653, 1-654, 1-655, 1-656, 1-658, 1-662, 1-663, 1-664, 1-666, 1-667, 1-668, 1-669, 1-670, 1-671, 1-672, 1-673, 1-674, 1-675, 1-676, 1-677, 1-679, 1-680, 1-682, 1-683, 1-684, 1-687, 1-688, 1-690, 1-693, 1-694, 1-695, 1-696, 1-697, 1-698, 1-699, 1-700, 1-701, 1-702, 1-703, 1-704, 1-705, 1-706, 1-707, 1-712, 1-713, 1-716, 1-718, 1-720, 1-721, 1-722, 1-723, 1-724, 1-729, 1-730, 1-731, 1-735, 1-737, 1-738, 1-739, 1-740, 1-742, 1-747, 1-752, 1-759, 1-766, 1-770, 1-776, 1-782, 1-785, 1-786, 1-787, 1-788, 1-789, 1-791, 1-793., 1-794, 1-795, 1-798, 1-800, 1-804, 1-808, 1-809, 1-811, 1-812, 1-815, 1-816, 1-819, 1-824, 1-829, 1-834, 1-837, 1-838, 1-839, 1-840, 1-842, 1-846, 1-847, 1-848, 1-850, 1-851, 1-852, 1-854, 1-856, 1-857, 1-862, 1-863, 1-864, 1-865, 1-868, 1-870, 1-873, 1-880, 1-883, 1-887, 1-890, 1-894, 1-895, 1-896, 1-897, 1-898, 1-901, 1-906, 1-907, 1-913, 1-915, 1-916, 1-917, 1-918, 1-919, 1-920, 1-921, 1-922, 1-923, 1-924, 1-925, 1-926, 1-927, 1-929, 1-930, 1-932, 1-933, 1-934, 1-937, 1-938, 1-940, 1-943, 1-944, 1-945, 1-946, 1-947, 1-948, 1-949, 1-950, 1-951, 1-952, 1-953, 1-954, 1-955, 1-956, 1-957, 1-962, 1-963, 1-966, 1-968, 1-970, 1-971, 1-972, 1-973, 1-974, 1-979, 1-980, 1-981, 1-985, 1-987, 1-988, 1-989, 1-990, 1-992, 1-997, 1-1002, 1-1009, 1-1016, 1-1020, 1-1026, 1-1032, 1-1035, 1-1036, 1-1037, 1-1038, 1-1039, 1-1041, 1-1043, 1-1044, 1-1045, 1-1048, 1-1050, 1-1054, 1-1058, 1-1059, 1-1061, 1-1062, 1-1065, 1-1066, 1-1069, 1-1074, 1-1079, 1-1084, 1-1087, 1-1088, 1-1089, 1-1090, 1-1092, 1-1096, 1-1097, 1-1098, 1-1100, 1-1101, 1-1102, 1-1103, 1-1104, 1-1105, 1-1106, 1-1107, 1-1108, 1-1115, 1-1120, 1-1122, 1-1124, 1-1126, 1-1127, 1-1128, 1-1129, 1-1130, 1-1131, 1-1141, 1-1144, 1-1156, 1-1160, 1-1161, 1-1162, 1-1163, 1-1166, 1-1167, 1-1168, 1-1178, 1-1179, 1-1182, 1-1187, 1-1191, 1-1193, 1-1197, 1-1198, 1-1202, 1-1203, 1-1204, 1-1205, 1-1208, 1-1212, 1-1213, 1-1224, 1-1227, 1-1230, 1-1231, 1-1234, 1-1236, 1-1237, 1-1238, 1-1241, 1-1245, 1-1246, 1-1256, 1-1260, 1-1263, 1-1264, 1-1267, 1-1269, 1-1270, 1-1271, 1-1274, 1-1278, 1-1279, 1-1289, 1-1299, 1-1309, 1-1319, 2-1, 2-2, 2-3, 2-4, 2-5, 2-6, 2-7, 2-8, 2-9, 2-10, 2-11, 2-12, 2-14, 2-15, 2-17, 2-18, 2-19, 2-22, 2-23, 2-25, 2-28, 2-29, 2-30, 2-31, 2-32, 2-33, 2-34, 2-35, 2-36, 2-37, 2-38, 2-39, 2-40, 2-41, 2-43, 2-47, 2-48, 2-51, 2-53, 2-55, 2-56, 2-57, 2-58, 2-59, 2-64, 2-65, 2-66, 2-70, 2-72, 2-73, 2-74, 2-75, 2-77, 2-82, 2-87, 2-94, 2-101, 2-105, 2-111, 2-117, 2-120, 2-121, 2-122, 2-123, 2-124, 2-126, 2-128, 2-129, 2-130, 2-133, 2-135, 2-139, 2-143, 2-144, 2-146, 2-147, 2-150, 2-151, 2-155, 2-159, 2-164, 2-169, 2-172, 2-173, 2-174, 2-175, 2-177, 2-181, 2-182, 2-183, 2-185, 2-186, 2-187, 2-188, 2-189, 2-190, 2-191, 2-192, 2-193, 2-198, 2-200, 2-205, 2-207, 2-209, 2-211, 2-212, 2-213, 2-214, 2-215, 2-216, 2-226, 2-229, 2-241, 2-245, 2-246, 2-247, 2-248, 2-251, 2-252, 2-253, 2-263, 2-264, 2-267, 2-272, 3-1, 3-2, 3-3,3-4, 3-5, 3-6, 3-7, 3-8, 3-9, 3-10, 3-11, 3-12, 3-14, 3-15, 3-17, 3-18, 3-19, 3-22, 3-23, 3-25, 3-28, 3-29, 3-30, 3-31, 3-32, 3-33, 3-34, 3-35, 3-36, 3-37, 3-38, 3-39, 3-40, 3-41, 3-42, 3-47, 3-48, 3-51, 3-53, 3-55, 3-56, 3-57, 3-58, 3-59, 3-64, 3-65, 3-66, 3-70, 3-72, 3-73, 3-74, 3-75, 3-77, 3-82, 3-87, 3-94, 3-101, 3-105, 3-111, 3-117, 3-120, 3-121, 3-122, 3-123, 3-124, 3-126, 3-128, 3-129, 3-130, 3-133, 3-135, 3-139, 3-143, 3-144, 3-146, 3-147, 3-150, 3-151, 3-154, 3-159, 3-164, 3-169, 3-172, 3-173, 3-174, 3-175, 3-177, 3-181, 3-182, 3-183, 3-185, 3-186, 3-187, 3-188, 3-189, 3-190, 3-191, 3-192, 3-193, 3-198, 3-200, 3-205, 3-207, 3-209, 3-211, 3-212, 3-213, 3-214, 3-215, 3-216, 3-226, 3-229, 3-241, 3-245, 3-246, 3-247, 3-248, 3-251, 3-252, 3-253, 3-263, 3-264, 3-267, 3-272, 4-1, 4-2, 4-8, 4-12, 4-13, 4-14, 4-15, 4-16, 4-19, 4-23, 4-24, 4-31, 4-33, 4-34, 4-35, 4-41, 4-45, 4-46, 4-47, 4-48, 4-49, 4-52, 4-56, 4-57, 4-64, 4-66, 4-67, 4-68, 4-74, 4-78, 4-79, 4-80, 4-81, 4-82, 4-85, 4-89, 4-90, 4-97, 4-99, 4-107, 4-108, 4-110, 4-111, 4-113, 4-114, 4-115, 4-118, 4-122, 4-123, 4-130, 4-140, 4-141, 4-144, 4-146, 4-147, 4-148, 4-151, 4-155, 4-156, 4-163, 4-173, 4-174, 4-176, 4-177, 4-178, 4-179, 4-180, 4-181, 4-184, 4-189, 4-196, 5-1, 5-2, 5-8, 5-11, 5-12, 5-13, 5-14, 5-15, 5-16, 5-19, 5-23, 5-24, 5-31, 5-33, 5-34, 5-35, 5-41, 5-45, 5-46, 5-47, 5-48, 5-49, 5-52, 5-56, 5-57, 5-64, 5-66, 5-67, 5-68, 5-74, 5-78, 5-79, 5-80, 5-81, 5-82, 5-85, 5-89, 5-90, 5-97, 5-99, 5-107, 5-108, 5-110, 5-111, 5-113, 5-114, 5-115, 5-118, 5-122, 5-123, 5-130, 5-140, 5-141, 5-144, 5-146, 5-147, 5-148, 5-151, 5-155, 5-156, 5-163, 5-166, 5-167, 5-173, 5-174, 5-176, 5-177, 5-178, 5-179, 5-180, 5-181, 5-184, 5-188, 5-189 and 5-196,

further more preferably compounds of Compounds Nos. 1-1, 1-2, 1-3, 1-4, 1-5, 1-6, 1-7, 1-8, 1-9, 1-10, 1-12, 1-29, 1-30, 1-32, 1-33, 1-38, 1-50, 1-51, 1-60, 1-61, 1-70, 1-78, 1-86, 1-87, 1-90, 1-102, 1-112, 1-139, 1-155, 1-163, 1-167, 1-177, 1-182, 1-192, 1-197, 1-207, 1-208, 1-210, 1-216, 1-226, 1-230, 1-231, 1-232, 1-233, 1-236, 1-237, 1-245, 1-0.246, 1-247, 1-248, 1-252, 1-254, 1-259, 1-265, 1-268, 1-269, 1-273, 1-280, 1-286, 1-295, 1-301, 1-309, 1-312, 1-321, 1-324, 1-334, 1-335, 1-345, 1-355, 1-367, 1-378, 1-379, 1-380, 1-381, 1-389, 1-390, 1-393, 1-394, 1-403, 1-406, 1-414, 1-421, 1-429, 1-436, 1-439, 1-442, 1-445, 1-448, 1-451, 1-454, 1-460, 1-461, 1-462, 1-463, 1-464, 1-468, 1-476, 1-477, 1-481, 1-482, 1-483, 1-484, 1-485, 1-486, 1-487, 1-488, 1-489, 1-490, 1-496, 1-499, 1-509, 1-511, 1-513, 1-515, 1-516, 1-517, 1-519, 1-520, 1-522, 1-528, 1-538, 1-545, 1-546, 1-558, 1-563, 1-568, 1-575, 1-582, 1-586, 1-592, 1-602, 1-603, 1-616, 1-620, 1-635, 1-640, 1-645, 1-653, 1-654, 1-662, 1-666, 1-667, 1-668, 1-669, 1-670, 1-671, 1-672, 1-673, 1-674, 1-683, 1-695, 1-699, 1-700, 1-701, 1-703, 1-704, 1-729, 1-730, 1-731, 1-785, 1-786, 1-787, 1-788, 1-819, 1-824, 1-829, 1-837, 1-850, 1-851, 1-852, 1-856, 1-857, 1-862, 1-863, 1-864, 1-865, 1-868, 1-870, 1-873, 1-883, 1-890, 1-895, 1-896, 1-897, 1-898, 1-901, 1-906, 1-916, 1-917, 1-918, 1-923, 1-930, 1-933, 1-943, 1-945, 1-947, 1-949, 1-950, 1-951, 1-953, 1-954, 1-956, 1-972, 1-979, 1-992, 1-997, 1-1016, 1-1026, 1-1032, 1-1036, 1-1037, 1-1038, 1-1069, 1-1074, 1-1079, 1-1087, 1-1088, 1-1101, 1-1103, 1-1107, 1-1108, 1-1115, 1-1120, 1-1122, 1-1124, 1-1126, 1-1127, 1-1128, 1-1131, 1-1141, 1-1144, 1-1156, 1-1160, 1-1161, 1-1182, 1-1191, 1-1193, 1-1197, 1-1198, 1-1202, 1-1203, 1-1204, 1-1205, 1-1208, 1-1212, 1-1213, 1-1224, 1-1227, 1-1230, 1-1231, 1-1234, 1-1236, 1-1237, 1-1238, 1-1241, 1-1246, 1-1256, 1-1263, 1-1264, 1-1269, 1-1270, 1-1271, 1-1274, 1-1279, 1-1289, 1-1299, 1-1309, 1-1319, 2-1, 2-2, 2-3, 2-4, 2-5, 2-6, 2-7, 2-8, 2-9, 2-15, 2-18, 2-28, 2-30, 2-32, 2-34, 2-35, 2-36, 2-38, 2-39, 2-41, 2-47, 2-57, 2-64, 2-65, 2-66, 2-77, 2-82, 2-87, 2-94, 2-101, 2-105, 2-111, 2-121, 2-122, 2-135, 2-139, 2-155, 2-159, 2-164, 2-172, 2-173, 2-181, 2-185, 2-186, 2-187, 2-188, 2-189, 2-192, 2-193, 2-198, 2-200, 2-205, 2-207, 2-209, 2-211, 2-212, 2-213, 2-215, 2-216, 2-226, 2-245, 2-246, 2-247, 2-251, 2-252, 2-263, 2-264, 2-267, 3-1, 3-2, 3-3, 3-8, 3-9, 3-15, 3-18, 3-28, 3-30, 3-32, 3-34, 3-35, 3-36, 3-38, 3-39, 3-41, 3-47, 3-57, 3-64, 3-65, 3-66, 3-77, 3-82, 3-87, 3-94, 3-101, 3-105, 3-111, 3-120, 3-121, 3-122, 3-135, 3-139, 3-143, 3-154, 3-159, 3-164, 3-169, 3-172, 3-177, 3-185, 3-188, 3-189, 3-192, 3-193, 3-198, 3-200, 3-205, 3-207, 3-209, 3-211, 3-212, 3-213, 3-215, 3-216, 3-226, 3-229, 3-245, 3-246, 3-247, 3-267, 4-1, 4-8, 4-14, 4-15, 4-16, 4-24, 4-35, 4-41, 4-45, 4-46, 4-47, 4-48, 4-49, 4-56, 4-57, 4-64, 4-68, 4-78, 4-80, 4-81, 4-82, 4-89, 4-99, 4-107, 4-108, 4-113, 4-114, 4-115, 4-122, 4-140, 4-141, 4-144, 4-146, 4-147, 4-148, 4-151, 4-176, 4-179, 4-180, 4-181, 4-184, 4-189, 5-1, 5-8, 5-14, 5-15, 5-16, 5-24, 5-35, 5-41, 5-45, 5-46, 5-47, 5-48, 5-49, 5-56, 5-57, 5-64, 5-67, 5-68, 5-78, 5-80, 5-81, 5-82, 5-89, 5-99, 5-107, 5-108, 5-113, 5-114, 5-115, 5-122, 5-140, 5-141, 5-144, 5-146, 5-147, 5-148, 5-151, 5-166, 5-167, 5-176, 5-179, 5-180, 5-181, 5-184 and 5-189,

particularly preferably

Compound No. 1-1: 2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one, Compound No. 1-2: 3-chloro-2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one, Compound No. 1-3: 3-bromo-2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one, Compound No. 1-4: 2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-3-methyl-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one, Compound No. 1-5: 2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-3-ethyl-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one, Compound No. 1-6: 2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-3-propyl-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one, Compound No. 1-7: 2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-3-isopropyl-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one, Compound No. 1-8: 3-butyl-2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one, Compound No. 1-9: 2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-3-isobutyl-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one, Compound No. 1-10: 2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-3-pentyl-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one, Compound No. 1-12: 2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-3-hexyl-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one, Compound No. 1-32: 2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-3-hydroxymethyl-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one, Compound No. 1-50: 2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-3-methoxymethyl-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one, Compound No. 1-51: 2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-3-(2-methoxyethyl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one, Compound No. 1-60: 2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-3-ethoxymethyl-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one, Compound No. 1-61: 2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-3-(2-ethoxyethyl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one, Compound No. 1-86: 2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-3-isopropoxymethyl-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one, Compound No. 1-90: 2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-3-(2-fluoroethoxymethyl)-1,5-dihydropyrrolo[2,3-d]-pyridazin-4-one, Compound No. 1-102: 3-cyclobutoxymethyl-2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one, Compound No. 1-112: 2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-3-cyclopropylmethoxymethyl-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one, Compound No. 1-197: 2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-3-dimethylaminomethyl-1,5-dihydropyrrolo[2,3-d]-pyridazin-4-one, Compound No. 1-207: 2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-3-cyclopropyl-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one, Compound No. 1-208: 2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-3-cyclopropylmethyl-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one, Compound No. 1-216: 2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-3-(2-cyclopropylethyl)-1,5-dihydropyrrolo[2,3-d]-pyridazin-4-one, Compound No. 1-220: 2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-3-(2-propenyl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one, Compound No. 1-231: 2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-3-ethynyl-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one, Compound No. 1-232: 2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-3-(2-propynyl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one, Compound No. 1-233: 3-(2-butynyl)-2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one, Compound No. 1-236: 2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-3-(4-methyl-2-pentynyl)-1,5-dihydropyrrolo[2,3-d]-pyridazin-4-one, Compound No. 1-237: 2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-3-(1-hydroxy-2-propenyl)-1,5-dihydropyrrolo[2,3-d]-pyridazin-4-one, Compound No. 1-245: 2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-3-phenyl-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one, Compound No. 1-334: 2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-3-(4-pyrazolyl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one, Compound No. 1-378: 3-benzyl-2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one, Compound No. 1-379: 2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-3-(2-fluorobenzyl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one, Compound No. 1-380: 2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-3-(3-fluorobenzyl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one, Compound No. 1-381: 2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-3-(4-fluorobenzyl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one, Compound No. 1-389: 3-(2-cyanobenzyl)-2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one, Compound No. 1-390: 3-(3-cyanobenzyl)-2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one, Compound No. 1-393: 3-(3-carboxybenzyl)-2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one, Compound No. 1-439: 2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-3-(6-methoxy-2-pyridylmethyl)-1,5-dihydropyrrolo-[2,3-d]pyridazin-4-one, Compound No. 1-445: 2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-3-(6-methoxy-3-pyridylmethyl)-1,5-dihydropyrrolo-[2,3-d]pyridazin-4-one, Compound No. 1-460: 2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-3-phenethyl-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one, Compound No. 1-476: 2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-3-hydroxyphenylmethyl-1,5-dihydropyrrolo[2,3-d]-pyridazin-4-one, Compound No. 1-482: 2-(3-cyclopropylmethoxy-4-difluoromethoxyphenyl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one, Compound No. 1-483: 3-chloro-2-(3-cyclopropylmethoxy-4-difluoromethoxyphenyl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one, Compound No. 1-486: 2-(3-cyclopropylmethoxy-4-difluoromethoxyphenyl)-3-ethyl-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one, Compound No. 1-545: 2-(3-cyclopropylmethoxy-4-difluoromethoxyphenyl)-3-phenyl-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one, Compound No. 1-666: 2-(4-difluoromethoxy-3-isopropoxyphenyl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one, Compound No. 1-667: 3-chloro-2-(4-difluoromethoxy-3-isopropoxyphenyl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one, Compound No. 1-668: 3-bromo-2-(4-difluoromethoxy-3-isopropoxyphenyl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one, Compound No. 1-850: 2-(3-cyclobutoxy-4-difluoromethoxyphenyl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one, Compound No. 1-851: 3-chloro-2-(3-cyclobutoxy-4-difluoromethoxyphenyl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one, Compound No. 1-852: 3-bromo-2-(3-cyclobutoxy-4-difluoromethoxyphenyl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one, Compound No. 1-870: 2-(3-cyclobutoxy-4-difluoromethoxyphenyl)-3-phenyl-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one, Compound No. 1-917: 3-chloro-2-(3-cyclopropoxy-4-methoxyphenyl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one, Compound No. 1-918: 3-bromo-2-(3-cyclopropoxy-4-methoxyphenyl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one, Compound No. 1-923: 3-butyl-2-(3-cyclopropoxy-4-methoxyphenyl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one, Compound No. 1-1101: 3-chloro-2-(3-cyclopropylmethoxy-4-methoxyphenyl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one, Compound No. 1-1191: 3-chloro-2-(3-isopropoxy-4-methoxyphenyl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one, Compound No. 1-1224: 3-chloro-2-(3-cyclobutoxy-4-methoxyphenyl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one, Compound No. 1-1256: 2-(3-cyclopentoxy-4-methoxyphenyl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one, Compound No. 1-1289: 2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-3-isobutoxymethyl-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one, Compound No. 1-1299: 3-(sec-butoxymethyl)-2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-1,5-dihydropyrrolo[2,3-d]-pyridazin-4-one, Compound No. 1-1309: 3-(tert-butoxymethyl)-2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-1,5-dihydropyrrolo[2,3-d]-pyridazin-4-one, Compound No. 1-1319: 2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-3-(1-ethylpropoxymethyl)-1,5-dihydropyrrolo[2,3-d]-pyridazin-4-one, Compound No. 2-2: 3-chloro-2-(8-difluoromethoxy-2,2-dimethyl-2H-chromen-5-yl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one, Compound No. 2-4: 2-(8-difluoromethoxy-2,2-dimethyl-2H-chromen-5-yl)-3-methyl-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one, Compound No. 2-5: 2-(8-difluoromethoxy-2,2-dimethyl-2H-chromen-5-yl)-3-ethyl-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one, Compound No. 2-38: 3-cyclopropyl-2-(8-difluoromethoxy-2,2-dimethyl-2H-chromen-5-yl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one, Compound No. 3-1: 2-(2-cyclopropyl-8-difluoromethoxy-2H-chromen-5-yl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one, Compound No. 4-35: 3-chloro-2-(8-difluoromethoxy-2H-chromen-2-spiro-1′-cyclobutan-5-yl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one, Compound No. 4-68: 3-chloro-2-(8-difluoromethoxy-2H-chromen-2-spiro-1′-cyclopentan-5-yl)-1,5-dihydropyrrolo-[2,3-d]pyridazin-4-one, Compound No. 5-67: 2-(7-difluoromethoxy-2,3-dihydrobenzofuran-2-spiro-1′-cyclopentan-4-yl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one, Compound No. 5-166: 2-(2,3-dihydro-7-methoxybenzofuran-2-spiro-1′-cyclopentan-4-yl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one, and Compound No. 5-167: 3-chloro-2-(2,3-dihydro-7-methoxybenzofuran-2-spiro-1′-cyclopentan-4-yl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one.

The pyrrolopyridazinone compound represented by the formula (1) or a pharmaceutically acceptable salt thereof of the present invention has excellent properties in the points of solubility, oral absorbability, concentration in blood, metabolic stability, tissue transferability, bioavailability (BA), in vitro activity, in vivo activity, rapidness of showing medical effects, continuity of medical effects, physical stability, medicaments interaction, toxicity, etc., also shows excellent PDE4 inhibiting activity, and less occurrence of side effects such as emesis, etc., whereby according to the present invention, it is useful as a prophylaxis or treatment agent of a respiratory disease to which PDE4 participates (for example, bronchitic asthma (including atopic asthma), COPD, chronic bronchitis, pneumonial disease, adult respiratory distress syndrome (ARDS), etc.) (particularly expected to be a prophylaxis or treatment agent of bronchitic asthma and COPD.).

Moreover, Compound (1) of the present invention is useful as a prevention and treatment agent for other diseases which have been known to be participated by PDE4, for example, diseases to which cytokine (IL-1, IL-4, IL-6 and TNF (tumor necrosis factor)), etc., pertains (for example, chronic rheumatism, ulcerative colitis, Crohn's disease, sepsis, septic shock, endotoxin shock, Gram-negative bacterial sepsis, toxic shock syndrome, nephritis, hepatitis, infection (bacteria and virus), circulatory failure (cardiac insufficiency, arteriosclerosis, cardiac infarction, cerebral apoplexy), etc.), and the like.

The pyrrolopyridazinone compound of the present invention can be prepared by the following methods.

[Preparation Method 1]

wherein R 1 , R 2 , R 3 and R 4 have the same meanings as defined above, R 5 represents a 4-methoxybenzyl group, methoxymethyl (hereinafter abbreviated to as MOM) group, methoxyethoxymethyl (hereinafter abbreviated to as MEM) group, benzyloxymethyl (hereinafter abbreviated to as BOM) group, 2-trimethylsilylethoxymethyl (hereinafter abbreviated to as SEM) group, tert-butoxycarbonyl (hereinafter abbreviated to as BOC) group or tetrahydropyranyl (hereinafter abbreviated to as THP) group, R 6 represents a benzyl group, 4-methoxybenzyl group, MOM group, MEM group, BOM group, SEM group, BOC group or THP group, R 5′ represents a SEM group or BOM group (provided that when R 5′ is a BOM group, R 6 is not a BOM group), R 5″ represents a BOM group, R 6′ represents a MOM group, MEM group, BOM group, SEM group, BOC group or THP group, X represents a chlorine, bromine or iodine atom, Z represents a dihydroxyboryl group or a boronic acid ester group such as a 4,4,5,5-tetramethyl[1,3,2]dioxaborolanyl group, etc.

Preparation method 1 is a method of preparing Compound (1) of the present invention by reacting a pyrrolopyridazinone compound (3) with a boronic acid compound (4) to prepare an intermediate compound (2), and then, removing two protective groups simultaneously or stepwisely.

[Step 1A]

Step 1A is a so-called Suzuki reaction, and is a step of preparing Compound (2) by reacting Compound (3) with Compound (4) in an inert solvent and in an inert gas atmosphere, in the presence of either a base or a fluoride (provided that R 5 is a SEM group, a base is preferred.), and in the presence of a palladium catalyst.

As the palladium catalyst to be used, there may be mentioned, for example, a metal palladium such as palladium-active carbon or palladium black, etc.; an organopalladium complex such as tetrakis(triphenylphosphine)palladium, bis(triphenylphosphine)palladium chloride, 1,1′-bis(diphenylphosphino)ferrocene palladium chloride or tris(dibenzylideneacetone)dipalladium, etc.; or a palladium salt such as palladium chloride or palladium acetate, etc. and the like, preferably tetrakis(triphenylphosphine)palladium or palladium acetate. An amount of palladium to be used as a catalyst is generally 0.0001 to 1-fold mol amount, preferably 0.005 to 0.3-fold mol amount based on 1 mol of Compound (3).

Incidentally, when tris(dibenzylideneacetone) dipalladium, palladium chloride or palladium acetate is used as a catalyst, it is particularly preferred to copresent an organophosphine compound.

As the organophosphine compound to be used, there may be mentioned, for example, tributylphosphine, tri(tertbutyl)phosphine, tricyclohexylphosphine, butyl-di-1-adamantylphosphine, triphenylphosphine, tri(o-tolyl)phosphine, 2-dicyclohexylphosphino-2′,6′-dimethoxybiphenyl, 1,1′-bis(diphenylphosphino)ferrocene or 1,2,3,4,5-pentaphenyl-1′-(di-t-butylphosphino)ferrocene, etc., preferably tricyclohexylphosphine, butyl-di-1-adamantylphosphine, triphenylphosphine or 2-dicyclohexylphosphino-2′,6′-dimethoxybiphenyl. An amount of the organophosphine compound to be used is generally 1 to 3-fold mol amount, preferably 1.5 to 2.5-fold mol amount based on 1 mol of palladium.

As the base or fluoride to be used, there may be mentioned, for example, an alkali metal acetate such as sodium acetate or potassium acetate, etc.; an alkali metal carbonate such as sodium carbonate, potassium carbonate or cesium carbonate, etc.; an alkali metal phosphate such as sodium phosphate or potassium phosphate, etc.; an alkali metal hydroxide such as lithium hydroxide, sodium hydroxide or potassium hydroxide, etc.; a quaternary ammonium hydroxide such as tetramethylammonium hydroxide, tetraethylammonium hydroxide or tetrabutylammonium hydroxide, etc.; or a fluoride such as cesium fluoride, tetramethylammonium fluoride, tetraethylammonium fluoride or tetrabutylammonium fluoride, etc., preferably sodium carbonate or potassium phosphate. An amount of the base or fluoride to be used is generally 1 to 10-fold mol amount, preferably 2 to 5-fold mol amount based on 1 mol of Compound (3).

As the inert gas to be used, there may be mentioned, for example, a nitrogen, helium or argon gas, etc.

As the inert solvent to be used, it is not specifically limited so long as it does not inhibit the reaction and dissolves the starting materials, a catalyst and a base (or a fluoride) with a certain extent, and there may be mentioned, for example, an aromatic hydrocarbon such as benzene or toluene, etc.; an ether such as tetrahydrofuran, 1,2-dimethoxyethane or 1,4-dioxane, etc.; an alcohol such as methanol, ethanol, propanol or isopropanol, etc.; an ester such as methyl acetate or ethyl acetate, etc.; an amide such as N,N-dimethylformamide, N,N-dimethylacetamide or N-methylpyrrolidone, etc.; a sulfoxides such as dimethylsulfoxide, etc.; a nitrile such as acetonitrile or propionitrile, etc.; water; or a mixed solvent of an optional combination of the above, etc., preferably toluene, toluene-ethanol-water mixed solvent or toluene-water mixed solvent.

An amount of Compound (4) to be used is generally 1 to 3-fold mol amount, preferably 1 to 1.5-fold mol amount based on 1 mol of Compound (3).

A reaction temperature may vary depending on a kind, an amount to be used of starting materials, solvent(s), etc., and is generally in the range of 0° C. to 200° C., preferably 50° C. to 150° C.

A reaction time may vary depending on a reaction temperature, etc., and is generally for 10 minutes to 240 hours, preferably 1 hour to 48 hours.

Step 1B, (Step 1B11-Step 1B12) and (Step 1B21-Step 1B22) are all, steps for preparing Compound (1) of the present invention by removing a protective group from Compound (2).

(A) Step 1B is a step of preparing Compound (1) of the present invention by removing R 5 and R 6 which are protective groups from Compound (2) simultaneously.

(B) (Step 1B11-Step 1B12) and (Step 1B21-Step 1B22) are steps of preparing Compound (1) of the present invention by removing each of R 5′ and R 6′ , as well as R 6″ and R 5″ which are protective groups stepwisely.

[Step 1B]

In Step 1B, to remove R 5 and R 6 simultaneously, it is necessary to select optional combination of R 5 and R 6 , and with respective combinations, it is carried out by a treatment under acidic conditions, a treatment under hydrogenation decomposition conditions or a treatment under fluoride treatment conditions with specific conditions.

As a combination of R 5 and R 6 to remove them under acidic conditions, a combination in which both of R 5 and R 6 are 4-methoxybenzyl group, MOM group, MEM group, BOM group, SEM group, BOC group or THP group is suitable.

As a combination of R 5 and R 6 to remove them under hydrogenation decomposition conditions, a combination in which R 5 is a BOM group, and R 6 is a benzyl group or BOM group is suitable.

To remove them under fluoride treatment conditions with specific conditions, a combination in which both of R 5 and R 6 are SEM groups is suitable, and, for example, it is necessary to carry out the reaction under specific conditions that it is carried out in an inert solvent, and a reaction temperature of 80° C. or higher.

When Step 1B is carried out under acidic conditions, it is carried out in an inert solvent by treating with an acid or a Lewis acid.

As the inert solvent to be used, it is not specifically limited so long as it does not inhibit the reaction and dissolves the starting materials with a certain extent, and there may be mentioned, for example, an alcohol such as methanol, ethanol, propanol or isopropanol, etc.; an ether such as tetrahydrofuran, 1,4-dioxane or 1,2-dimethoxyethane, etc.; a halogenated aliphatic hydrocarbon such as dichloromethane, chloroform or 1,2-dichloroethane, etc.; an organic acid such as formic acid, acetic acid, propionic acid or trifluoroacetic acid, etc.; water; or a mixed solvent of an optional combination of the above, etc., preferably methanol, ethanol or 1,4-dioxane.

As the acid or Lewis acid to be used, there may be mentioned, for example, a hydrogen chloride gas, hydrochloric acid, hydrobromic acid, hydroiodic acid, sulfuric acid, phosphoric acid, p-toluenesulfonic acid, methanesulfonic acid, trifluoroacetic acid or boron trifluoride diethyl ether complex, etc., preferably a hydrogen chloride gas or hydrochloric acid.

An amount of the acid to be used is generally 10 to 2000-fold mol amount, preferably 30 to 300-fold mol amount based on 1 mol of Compound (2).

A reaction temperature may vary depending on a kind, an amount to be used of starting materials, solvent(s), etc., and is generally in the range of 0° C. to 200° C., preferably 15° C. to 150° C.

A reaction time may vary depending on a reaction temperature, etc., and is generally for 10 minutes to 240 hours, preferably 1 to 48 hours.

When Step 1B is carried out under hydrogenation decomposition conditions (the case where R 5 of a compound is a BOM group, and R 6 is a benzyl group or BOM group), it is carried out in an inert solvent in the presence of a catalyst.

As the inert solvent to be used, it is not specifically limited so long as it does not inhibit the reaction and dissolves the starting materials with a certain extent, and there may be mentioned, for example, an alcohol such as methanol, ethanol, propanol or isopropanol, etc.; an ether such as tetrahydrofuran, 1,4-dioxane or 1,2-dimethoxyethane, etc.; a halogenated aliphatic hydrocarbon such as dichloromethane, chloroform or 1,2-dichloroethane, etc.; an ester such as methyl formate, ethyl formate, methyl acetate or ethyl acetate, etc.; an organic acid such as formic acid, acetic acid, propionic acid or trifluoroacetic acid, etc.; an aromatic hydrocarbon such as benzene or toluene, etc.; water; or a mixed solvent of an optional combination of the above, etc., preferably methanol or ethanol.

The catalyst to be used may be mentioned, for example, palladium-active carbon, platinum-active carbon, platinum black, rhodium-active carbon or Raney nickel, etc., preferably palladium-active carbon or Raney nickel. An amount of the catalyst to be used is generally 0.0005 to 1-fold mol amount, preferably 0.01 to 0.1-fold mol amount based on 1 mol of Compound (2).

Incidentally, an acid may be added as an additive to promote the reaction.

As the acid to be used, there may be mentioned, for example, a hydrogen chloride gas, hydrochloric acid, hydrobromic acid, hydroiodic acid, p-toluenesulfonic acid, methanesulfonic acid or trifluoroacetic acid, etc., preferably hydrochloric acid, hydrobromic acid, p-toluenesulfonic acid, methanesulfonic acid or trifluoroacetic acid. An amount of the acid to be used is generally 0.5 to 10-fold mol amount, preferably 1 to 3-fold mol amount based on 1 mol of Compound (2).

A hydrogen partial pressure in the hydrogenation decomposition reaction is generally 1 atm to 10 atm, preferably 1 atm to 5 atm.

A reaction temperature may vary depending on a kind, an amount to be used of starting materials, solvent(s), etc., and is generally in the range of 0° C. to 100° C., preferably 15° C. to 80° C.

A reaction time may vary depending on a reaction temperature, etc., and is usually 15 minutes to 72 hours, preferably 30 minutes to 48 hours.

When Step 1B is carried out under fluoride treatment conditions, specific reaction conditions of (the case where R 5 and R 6 of a compound are both SEM groups) are as follows.

As the inert solvent to be used, it is not specifically limited so long as it does not inhibit the reaction and dissolves the starting materials with a certain extent, and there may be mentioned, for example, an amide such as N,N-dimethylformamide, N-methylpyrrolidone or N,N-dimethylacetamide, etc.; an ether such as 1,4-dioxane or 1,2-dimethoxyethane, etc.; an aromatic hydrocarbon such as benzene or toluene, etc.; or a sulfoxide such as dimethylsulfoxide, etc., preferably N,N-dimethylformamide, N-methylpyrrolidone or N,N-dimethylacetamide.

As the fluoride to be used, there may be mentioned, for example, tetraethylammonium fluoride or tetrabutylammonium fluoride, etc. An amount of the fluoride to be used is generally 1 to 100-fold mol amount, preferably 5 to 15-fold mol amount based on 1 mol of Compound (2). To promote the reaction, an amine, for example, ammonia, methylamine, ethylamine, propylamine or ethylenediamine, etc. may be added. An amount of the amine to be used is generally 1 to 100-fold mol amount, preferably 1 to 15-fold mol amount based on 1 mol of Compound (2).

A reaction temperature may vary depending on a kind, an amount to be used of starting materials, solvent(s), etc., and is generally in the range of 80° C. to 150° C., preferably 80° C. to 100° C.

A reaction time may vary depending on a reaction temperature, etc., and is usually 15 minutes to 72 hours, preferably 30 minutes to 48 hours.

(Step 1B11-Step 1B12) are steps of removing protective groups in the order of firstly R 5′ , and then R 6 .

In (Step 1B11-Step 1B12), to prepare Compound (1) of the present invention from Compound (2′), it is necessary to select suitable reaction conditions under a suitable combination of R 5′ and R 6 .

[Step 1B11]

In Step 1B11, as a treatment method of removing R 5′ ,

(Treatment 1) a treatment with a fluoride in the case that R 5′ is a SEM group, or

(Treatment 2) a treatment under hydrogenation decomposition conditions wherein R 5′ is a BOM group, and R 6 is a group other than the BOM group is suitable.

(Treatment 1)

A step of preparing Compound (5) from Compound (2′) (the case where R 5′ is a SEM group) of Step 1B11 is carried out in the presence of an inert solvent by treating with a fluoride.

As the inert solvent to be used, it is not specifically limited so long as it does not inhibit the reaction and dissolves the starting materials with a certain extent, and there may be mentioned, for example, an alcohol such as methanol, ethanol, propanol or isopropanol, etc.; an ether such as tetrahydrofuran, 1,4-dioxane or 1,2-dimethoxyethane, etc.; an ester such as methyl formate, ethyl formate, methyl acetate or ethyl acetate, etc.; a nitrile such as acetonitrile or propionitrile, etc.; water; or a mixed solvent of an optional combination of the above, etc., preferably tetrahydrofuran, 1,4-dioxane or 1,2-dimethoxyethane.

As the fluoride to be used, there may be mentioned, tetraethylammonium fluoride or tetrabutylammonium fluoride, etc. An amount of the fluoride to be used is generally 1 to 100-fold mol amount, preferably 5 to 15-fold mol amount based on 1 mol of Compound (2′).

To promote the reaction, an amine derivative such as ammonia, methylamine, ethylamine, propylamine or ethylenediamine, etc. may be added.

An amount of the amine derivative to be used is generally 1 to 100-fold mol amount, preferably 5 to 15-fold mol amount based on 1 mol of Compound (2′).

A reaction temperature may vary depending on a kind, an amount to be used of starting materials, solvent(s), etc., and is generally in the range of 0° C. to 100° C., preferably 15° C. to 80° C.

A reaction time may vary depending on a reaction temperature, etc., and is generally for 10 minutes to 240 hours, preferably 1 to 24 hours.

(Treatment 2)

A step of preparing Compound (5) from Compound (2′) (the case where R 5 is a BOM group, and R 6 is a group other than the BOM group) of Step 1B11 is carried out in the same manner as in the treatment under hydrogenation decomposition conditions of the above-mentioned “Step 1B”.

[Step 1B12]

In Step 1B12, as a treatment method of removing R 6 ,

(Treatment 3) a treatment under acidic conditions wherein R 6 is a 4-methoxybenzyl group, MOM group, MEM group, BOM group, SEM group, BOC group or THP group,

(Treatment 4) a treatment under strong hydrogenation decomposition conditions wherein R 6 is a benzyl group, or

(Treatment 5) a treatment by a fluoride wherein R 6 is a SEM group is suitable.

(Treatment 3)

The step of preparing Compound (1) of the present invention from Compound (5) of Step 1B12 can be carried out in the same treatment under acidic conditions of the above-mentioned “Step 1B”.

(Treatment 4)

In the step of preparing Compound (1) of the present invention from Compound (5) of Step 1B12, the strong hydrogenation decomposition conditions when R 6 of Compound (5) is a benzyl group refer to the same treatment conditions of the hydrogenation decomposition conditions of the above-mentioned “Step 1B” except that acetic acid is used as an inert solvent, a reaction temperature is preferably in the range of 80° C. to 110° C., a reaction time may vary depending on a reaction temperature, etc., preferably 6 to 48 hours.

(Treatment 5)

A step of preparing Compound (1) of the present invention from Compound (5) where R 6 is a SEM group of Step 1B12 can be carried out in the same manner as in the above-mentioned (Treatment 1) of the above-mentioned “Step 1B11”. To promote the reaction, lithium bromide may be added.

An amount of the lithium bromide to be used is generally 1 to 20-fold mol amount, preferably 1 to 5-fold mol amount based on 1 mol of Compound (5).

(Step 1B21-Step 1B22) are steps of removing protective groups in the order of firstly R 6′ , and then R 5″ .

In (Step 1B21-Step 1B22), to prepare Compound (1) of the present invention from Compound (2″), it is necessary to select suitable reaction conditions in the respective steps with a suitable combination of R 5″ and R 6″

[Step 1B21]

In Step 1B21, as a treatment method of removing R 6′ , (Treatment 6) a treatment under relatively weak acidic conditions when R 5″ is a BOM group, and R 6′ is a MOM group, MEM group, BOM group, SEM group, BOC group or THP group, is suitable.

(Treatment 6)

The step of preparing Compound (6′) from Compound (2″) of Step 1B21 can be carried out in the same manner as in the treatment under acidic conditions of the above-mentioned “Step 1B” except for a reaction temperature and a reaction time.

A reaction temperature is preferably in the range of 0° C. to 100° C., more preferably 15° C. to 60° C.

A reaction time may vary depending on a reaction temperature, etc., and is generally for 10 minutes to 10 hours, preferably 30 minutes to 5 hours.

[Step 1B22]

In Step 1B22, as a treatment method of removing R 5″ , (Treatment 7) in Step 1B, a treatment under stronger acidic conditions than the conditions for removing R 6 is suitable.

(Treatment 7)

In the step of preparing Compound (1) of the present invention from Compound (6′) of Step 1B22, treatment conditions under stronger acidic conditions than the conditions for removing R 6 in “Step 1B” are the same treatment conditions as in the treatment conditions under acidic conditions of the above-mentioned “Step 1B” except for a reaction temperature and a reaction time.

A reaction temperature is preferably in the range of 50° C. to 150° C., more preferably 80° C. to 120° C.

A reaction time may vary depending on a reaction temperature, etc., and is preferably 1 hour to 48 hours, more preferably 5 hours to 24 hours.

[Preparation Method 2]

wherein R 1 , R 2 , R 3 , R 4 , R 5 , X and Z have the same meanings as defined above.

Preparation method 2 is another method of preparing Compound (1) of the present invention.

Step 2A is a step of preparing Compound (6) by Suzuki Reaction of boric acid Compound (4) and Compound (3a). This step is carried out in the same manner as in the above-mentioned “Step 1A” except for using Compound (3a) in place of Compound (3), and using tetrakis(triphenylphosphine)palladium as a catalyst.

Step 2B is a step of preparing Compound (1) of the present invention by removing a protective group R 5 from Compound (6). This step is carried out in the same manner as in the above-mentioned “Step 1B” except for using Compound (6) in place of Compound (2).

Incidentally, a compound in which R 1 is a difluoromethyl group in Compound (3) or Compound (4) which is used as a starting substance in “Preparation method 1” and “Preparation method 2”, and Compound (2), Compound (5) or Compound (6) which is an intermediate substance are novel compounds, and can be prepared by any one of Preparation methods shown as Preparation methods 4 to 31, or 43 to 47 mentioned below.

Also, a compound in which R 1 in Compound (4) is a methyl group is conventionally known, or can be prepared from a conventionally known compound by a conventionally known method (for example, see Synthesis, 18, 2805 (2003)).

[Preparation Method 3]

wherein R 1 , R 2 and R 3 have the same meanings as defined above, R 4′ represents a hydrogen atom, a C 7 -C 8 aralkyl group, an aromatic ring group, a heteroaromatic ring group or a C 1 -C 8 alkyl group defined in R 4 , (the C 7 -C 8 aralkyl group may be mentioned, for example, a benzyl or phenethyl group, the aromatic ring group may be mentioned, for example, a phenyl or naphthyl group, preferably a phenyl group, and the heteroaromatic ring group may be mentioned, for example, a thienyl, oxazolyl, isoxazolyl, thiazolyl, isothiazolyl, imidazolyl, pyrazolyl, pyridyl, pyridazinyl, pyrimidinyl or pyrazinyl group, etc., preferably a thienyl, thiazolyl, pyrazolyl or pyridyl group.), R 7 and R 8 may be the same or different from each other, and each represents a C 1 -C 4 alkyl group or a “C 7 -C 8 aralkyl group which may be substituted by a C 1 -C 2 alkoxy group”, (the C 1 -C 4 alkyl group may be mentioned, for example, a methyl, ethyl, propyl, isopropyl, butyl, isobutyl, sec-butyl or tert-butyl group, preferably a methyl or ethyl group, the “C 7 -C 8 aralkyl group which may be substituted by a C 1 -C 2 alkoxy group” may be mentioned, for example, benzyl, 4-methoxybenzyl, 3-methoxybenzyl, 2-methoxybenzyl, 4-ethoxybenzyl, 3-ethoxybenzyl, 2-ethoxybenzyl, phenethyl, 4-methoxyphenethyl, 3-methoxyphenethyl, 2-methoxyphenethyl, 4-ethoxyphenethyl, 3-ethoxyphenethyl or 2-ethoxyphenethyl group, etc., preferably benzyl or 4-methoxybenzyl group.),

M represents a counter metal such as MgCl, MgBr or Li, etc. which form an organometallic compound such as a Grignard reagent and an organolithium reagent, etc.

Preparation method 3 is a method for preparing Compound (1′) of the present invention by using a benzoic acid compound (7) as a starting substance and constructing a pyrrolopyridazinone skeleton stepwisely.

Step 3A is a step of preparing an amide compound (8) by reacting Compound (7) with a halogenating agent in an inert solvent to lead to an acid halide compound, then, reacting the compound with a N,O-dimethylhydroxylamine in the presence of a base. Compound (7) is a compound which is conventionally known, or can be prepared by the below mentioned “Preparation method 41”.

As the inert solvent to be used, it is not specifically limited so long as it does not inhibit the reaction and dissolves the starting materials with a certain extent, and there may be mentioned, for example, a halogenated aliphatic hydrocarbon such as chloroform, dichloromethane or 1,2-dichloroethane, etc.; an ether such as 1,4-dioxane, tetrahydrofuran, diethyl ether or 1,2-dimethoxyethane, etc.; an amide such as N,N-dimethylformamide, N,N-dimethylacetamide or N-methylpyrrolidone, etc.; or a mixed solvent of an optional combination of the above, etc., preferably dichloromethane, 1,2-dichloroethane, N,N-dimethylformamide or a mixed solvent thereof.

As the halogenating agent to be used, there may be mentioned, for example, thionyl chloride, phosphorus trichloride, phosphorus tribromide, phosphorus oxychloride or phosphorus pentachloride, etc., preferably thionyl chloride. An amount of the halogenating agent to be used is generally 1 to 10-fold mol amount, preferably 1 to 3-fold mol amount based on 1 mol of Compound (7).

An amount of the N,O-dimethylhydroxylamine to be used is generally 1 to 10-fold mol amount, preferably 4.5 to 5.5-fold mol amount based on 1 mol of Compound (7).

As the base to be used, there may be mentioned, for example, an organic base such as triethylamine or N,N-diisopropylethylamine, etc.; or an inorganic base such as sodium carbonate or potassium carbonate, etc., preferably triethylamine or N,N-diisopropylethylamine. An amount of the base to be used is generally 1 to 100-fold mol amount, preferably 1 to 20-fold mol amount based on 1 mol of Compound (7).

A reaction temperature may vary depending on a kind, an amount to be used of starting materials, solvent(s), etc., and is generally in the range of −20° C. to 100° C., preferably −5° C. to 50° C.

A reaction time may vary depending on a reaction temperature, etc., and is generally for 10 minutes to 24 hours, preferably 1 hour to 6 hours.

Step 3B is a step of preparing a carbonyl compound (10) by reacting Compound (8) with an organometallic compound (9) such as an organolithium compound or a Grignard compound, etc., in an inert solvent.

As the inert solvent to be used, it is not specifically limited so long as it does not inhibit the reaction and dissolves the starting materials with a certain extent, and there may be mentioned, for example, an ether such as 1,4-dioxane, tetrahydrofuran, diethyl ether or 1,2-dimethoxyethane, etc. or a mixed solvent of an optional combination of the above, preferably tetrahydrofuran, diethyl ether or a mixed solvent thereof.

As the organometallic compound (9) to be used, there may be mentioned, for example, an organolithium reagent such as methyl lithium, butyl lithium, phenyl lithium, etc.; or an organomagnesium reagent (Grignard reagent) such as methyl magnesium bromide, ethyl magnesium bromide, propyl magnesium bromide, butyl magnesium bromide, phenyl magnesium bromide, benzyl magnesium bromide, phenethyl magnesium bromide, etc., preferably methyl magnesium bromide, ethyl magnesium bromide, propyl magnesium bromide, butyl magnesium bromide, phenyl magnesium bromide, benzyl magnesium bromide or phenethyl magnesium bromide. An amount of the organometallic compound (9) to be used is generally 1 to 10-fold mol amount, preferably 1 to 3-fold mol amount based on 1 mol of Compound (8).

A reaction temperature may vary depending on a kind, an amount to be used of starting materials, solvent(s), etc., and is generally in the range of −20° C. to 100° C., preferably −5° C. to 50° C.

A reaction time may vary depending on a reaction temperature, etc., and is generally for 10 minutes to 240 hours, preferably 1 hour to 24 hours.

Step 3C is a step of preparing a brominated compound (11) by using a brominating agent in an inert solvent.

As the inert solvent to be used, it is not specifically limited so long as it does not inhibit the reaction and dissolves the starting materials with a certain extent, and there may be mentioned, for example, an alcohol such as methanol, ethanol, propanol or isopropanol, etc.; an ether such as diethyl ether, 1,2-dimethoxyethane, 1,4-dioxane or tetrahydrofuran, etc.; a halogenated aliphatic hydrocarbon such as dichloromethane, chloroform or 1,2-dichloroethane, etc.; an ester such as methyl acetate or ethyl acetate, etc.; an organic acid such as acetic acid, propionic acid or trifluoroacetic acid, etc.; or a mixed solvent of an optional combination of the above, preferably methanol, isopropanol or tetrahydrofuran.

As the brominating agent to be used, there may be mentioned, for example, bromine, benzyltrimethylammonium tribromide, trimethylphenylammonium tribromide, tetramethylammonium tribromide, tetraethylammonium tribromide, tetrabutylammonium tribromide or pyridinium hydrobromide perbromide, etc., preferably bromine or trimethylphenylammonium tribromide. An amount of the brominating agent to be used is generally 1 to 50-fold mol amount, preferably 1 to 10-fold mol amount based on 1 mol of Compound (10).

A reaction temperature may vary depending on a kind, an amount to be used of starting materials, solvent(s), etc., and is generally in the range of −20° C. to 100° C., preferably −5° C. to 50° C.

A reaction time may vary depending on a reaction temperature, etc., and is generally for 10 minutes to 240 hours, preferably 1 hour to 48 hours.

Step 3D is a step of preparing a diketone compound (13) by the reaction of Compound (11) and an acetoacetic acid ester derivative (12) in an inert solvent in the presence of a base.

As the inert solvent to be used, it is not specifically limited so long as it does not inhibit the reaction and dissolves the starting materials with a certain extent, and there may be mentioned, for example, an alcohol such as methanol, ethanol, propanol or isopropanol, etc.; an ether such as diethyl ether, 1,4-dioxane or tetrahydrofuran, etc.; a halogenated aliphatic hydrocarbon such as dichloromethane, chloroform or 1,2-dichloroethane, etc.; an ester such as methyl acetate or ethyl acetate, etc.; an amide such as N,N-dimethylformamide, N,N-dimethylacetamide or N-methylpyrrolidone, etc.; a nitrile such as acetonitrile or propionitrile, etc.; or a mixed solvent of an optional combination of the above, preferably methanol or ethanol.

As the acetoacetic acid ester derivative (12) to be used, there may be mentioned, for example, methyl 4-benzyloxy-3-oxobutyrate, ethyl 4-benzyloxy-3-oxobutyrate, propyl 4-benzyloxy-3-oxobutyrate, isopropyl 4-benzyloxy-3-oxobutyrate, methyl 4-methoxy-3-oxobutyrate, ethyl 4-methoxy-3-oxobutyrate, propyl 4-methoxy-3-oxobutyrate, isopropyl 4-methoxy-3-oxobutyrate, methyl 4-ethoxy-3-oxobutyrate, ethyl 4-ethoxy-3-oxobutyrate, propyl 4-ethoxy-3-oxobutyrate, isopropyl 4-ethoxy-3-oxobutyrate, methyl 3-oxo-4-propoxybutyrate, ethyl 3-oxo-4-propoxybutyrate, propyl 3-oxo-4-propoxybutyrate, isopropyl 3-oxo-4-propoxybutyrate, methyl 4-(4-methoxybenzyloxy)-3-oxobutyrate, ethyl 4-(4-methoxybenzyloxy)-3-oxobutyrate, propyl 4-(4-methoxybenzyloxy)-3-oxobutyrate or isopropyl 4-(4-methoxybenzyloxy)-3-oxobutyrate, etc., preferably methyl 4-benzyloxy-3-oxobutyrate, ethyl 4-benzyloxy-3-oxobutyrate, methyl 4-methoxy-3-oxobutyrate, ethyl 4-methoxy-3-oxobutyrate, methyl 4-ethoxy-3-oxobutyrate, ethyl 4-ethoxy-3-oxobutyrate, methyl 4-(4-methoxybenzyloxy)-3-oxobutyrate or ethyl 4-(4-methoxybenzyloxy)-3-oxobutyrate. An amount of the acetoacetic acid ester derivative (12) to be used is generally 1 to 10-fold mol amount, preferably 1 to 2-fold mol amount based on 1 mol of Compound (11).

As the base to be used, there may be mentioned, for example, sodium methoxide, sodium ethoxide, potassium methoxide, potassium ethoxide, sodium tert-butoxide or potassium tert-butoxide, etc., preferably sodium methoxide or sodium ethoxide. An amount of the base to be used is generally 1 to 10-fold mol amount, preferably 1 to 2-fold mol amount based on 1 mol of Compound (11).

A reaction temperature may vary depending on a kind, an amount to be used of starting materials, solvent(s), etc., and is generally in the range of −20° C. to 100° C., preferably −5° C. to 50° C.

A reaction time may vary depending on a reaction temperature, etc., and is generally for 10 minutes to 240 hours, preferably 30 minutes to 48 hours.

Step 3E is a step of preparing a pyrrole compound (15) by the reaction of Compound (13) and an ammonium salt (14) in an inert solvent.

As the inert solvent to be used, it is not specifically limited so long as it does not inhibit the reaction and dissolves the starting materials with a certain extent, and there may be mentioned, for example, an alcohol such as methanol, ethanol, propanol or isopropanol, etc.; an ether such as diethyl ether, 1,4-dioxane or tetrahydrofuran, etc.; a halogenated aliphatic hydrocarbon such as dichloromethane, chloroform or 1,2-dichloroethane, etc.; an ester such as methyl acetate or ethyl acetate, etc.; an amide such as N,N-dimethylformamide, N,N-dimethylacetamide or N-methylpyrrolidone, etc.; a nitrile such as acetonitrile or propionitrile, etc.; or a mixed solvent of an optional combination of the above, etc., preferably methanol or ethanol.

As the ammonium salt (14) to be used, there may be mentioned, for example, ammonium formate, ammonium acetate or ammonium propionate, etc., preferably ammonium acetate. An amount of the ammonium salt (14) is generally 1 to 50-fold mol amount, preferably 1 to 10-fold mol amount based on 1 mol of Compound (13).

A reaction temperature may vary depending on a kind, an amount to be used of starting materials, solvent(s), etc., and is generally in the range of 0° C. to 200° C., preferably 15° C. to 100° C.

A reaction time may vary depending on a reaction temperature, etc., and is generally for 10 minutes to 240 hours, preferably 30 minutes to 48 hours.

Step 3F is a step of preparing a pyrrole compound (16) by treating Compound (15) with an oxidizing agent in an inert solvent.

As the inert solvent to be used, it is not specifically limited so long as it does not inhibit the reaction and dissolves the starting materials with a certain extent, and there may be mentioned, for example, an alcohol such as methanol, ethanol, propanol or isopropanol, etc.; an ether such as diethyl ether, 1,4-dioxane or tetrahydrofuran, etc.; a halogenated aliphatic hydrocarbon such as dichloromethane, chloroform or 1,2-dichloroethane, etc.; an ester such as methyl acetate or ethyl acetate, etc.; an amide such as N,N-dimethylformamide, N,N-dimethylacetamide or N-methylpyrrolidone, etc.; a nitrile such as acetonitrile or propionitrile, etc.; water; or a mixed solvent of an optional combination of the above, etc., preferably a mixed solvent of dichloromethane and water.

As the oxidizing agent to be used, there may be mentioned, for example, 2,3-dichloro-5,6-dicyano-1,4-benzoquinone or ammonium cerium(IV) nitrate, etc., preferably 2,3-dichloro-5,6-dicyano-1,4-benzoquinone. An amount of the oxidizing agent to be used is generally 1 to 50-fold mol amount, preferably 1 to 3-fold mol amount based on 1 mol of Compound (15).

A reaction temperature may vary depending on a kind, an amount to be used of starting materials, solvent(s), etc., and is generally in the range of −20° C. to 100° C., preferably −5° C. to 50° C.

A reaction time may vary depending on a reaction temperature, etc., and is generally for 10 minutes to 240 hours, preferably 30 minutes to 48 hours.

Step 3G is a step of preparing Compound (1′) of the present invention having a pyrrolopyridazinone skeleton by reacting Compound (16) with a hydrazine monohydrate in an inert solvent.

As the inert solvent to be used, it is not specifically limited so long as it does not inhibit the reaction and dissolves the starting materials with a certain extent, and there may be mentioned, for example, an alcohol such as methanol, ethanol, propanol, isopropanol, ethylene glycol or diethylene glycol, etc.; a nitrile such as acetonitrile or propionitrile, etc.; an ether such as 1,2-dimethoxyethane, 1,4-dioxane or tetrahydrofuran, etc.; an amide such as N,N-dimethylformamide, N,N-dimethylacetamide or N-methylpyrrolidone, etc.; water; or a mixed solvent of an optional combination of the above, etc., preferably ethylene glycol or diethylene glycol.

An amount of the hydrazine monohydrate to be used is generally 1 to 100-fold mol amount, preferably 1 to 10-fold mol amount based on 1 mol of Compound (16).

A reaction temperature may vary depending on a kind, an amount to be used of starting materials, solvent(s), etc., and is generally in the range of 0° C. to 300° C., preferably 50° C. to 200° C.

A reaction time may vary depending on a reaction temperature, etc., and is generally for 10 minutes to 240 hours, preferably 1 hour to 72 hours.

[Preparation Method 4]

wherein R 1 , R 2 , R 3 , R 4′ , R 7 and R 8 have the same meanings as defined above, R 5a represents a 4-methoxybenzyl group, MOM group, MEM group, BOM group, SEM group or THP group, R 5b represents a BOC group, and R 5c represents a THP group.

Preparation method 4 is a method for preparing intermediate compound (6a), (6b) or (6c) of Preparation method 1 from a pyrrole compound (15), and comprises the corresponding Step 4A (Step 4A1, 4A2, 4A3), Step 4B (Step 4B1, 4B2, 4B3) and Step 4C (Step 4C1, 4C2, 4C3), respectively.

Step 4A is a step of introducing R 5a , R 5b or R 5c which is a protective group corresponding to respective groups by reacting a pyrrole compound (15) with Compound (17a), (17b) or (17c), and a method or conditions for introduction can be referred to a written book (see W. Greene and P. G. H. Wuts “Protective Groups in Organic Synthesis” 3 rd Ed., John Wiley & Sons), etc., and it is not specifically limited by these conditions.

Step 4A1 is a step of preparing Compound (18a) in which R 5a is introduced as a protective group into the NH group of the pyrrole ring of Compound (15) by reacting a pyrrole compound (15) with Compound (17a) in an inert solvent in the presence of a base. Compound (15) can be prepared by the above-mentioned “Step 3e”.

As Compound (17a) to be used, there may be mentioned, for example, 4-methoxybenzyl chloride, methoxymethyl chloride, methoxyethoxymethyl chloride, benzyloxymethyl chloride, (2-trimethylsilylethoxy)methyl chloride or tetrahydropyranyl chloride, etc. An amount of Compound (17a) to be used is generally 1 to 3-fold mol amount, preferably 1 to 1.5-fold mol amount based on 1 mol of Compound (15).

As the inert solvent to be used, it is not specifically limited so long as it does not inhibit the reaction and dissolves the starting materials with a certain extent, and there may be mentioned, for example, an ether such as tetrahydrofuran, 1,4-dioxane or 1,2-dimethoxyethane, etc.; an ester such as methyl acetate or ethyl acetate, etc.; a nitrile such as acetonitrile or propionitrile, etc.; an amide such as N,N-dimethylformamide, N,N-dimethylacetamide or N-methylpyrrolidone, etc.; a sulfoxide such as dimethylsulfoxide, etc.; a halogenated aliphatic hydrocarbon such as dichloromethane, chloroform or 1,2-dichloroethane, etc.; or a mixed solvent of an optional combination of the above, etc., preferably N,N-dimethylformamide, dichloromethane or 1,2-dichloroethane.

Incidentally, when the inert solvent is an ester, a nitrile or a halogenated aliphatic hydrocarbon, an amine is preferred as a base.

As the base to be used, there may be mentioned, for example, an alkali metal such as metal sodium or metal potassium, etc.; an alkali metal hydride such as sodium hydride or potassium hydride, etc.; an alkali metal amide such as lithium amide, sodium amide, lithium diisopropyl amide or lithium bis(trimethylsilyl) amide, etc.; an alkali metal alkoxide such as sodium tert-butoxide or potassium tert-butoxide, etc.; or an amine such as triethylamine, tributylamine, N,N-diisopropylethylamine, pyridine, picoline, 2,6-lutidine or 4-dimethylaminopyridine, etc., and the like, preferably metal sodium, sodium hydride, triethylamine or N,N-diisopropylethylamine. An amount of the base to be used is generally 1 to 3-fold mol amount, preferably 1 to 1.5-fold mol amount based on 1 mol of Compound (15).

A reaction temperature may vary depending on a kind, an amount to be used of starting materials, solvent(s), etc., and is generally in the range of −80° C. to 100° C., preferably 0° C. to 60° C.

A reaction time may vary depending on a reaction temperature, etc., and is generally for 10 minutes to 240 hours, preferably 1 hour to 48 hours.

Step 4A2 is a step of preparing Compound (18b) in which R 5b is introduced into the NH group of the pyrrole ring of Compound (15) as a protective group by reacting a pyrrole compound (15) with Compound (17b) in an inert solvent in the presence of a base.

As Compound (17b) to be used, there may be mentioned, for example, di(tert-butyl) dicarbonate, tert-butoxy carbonyl azide or tert-butyl phenyl carbonate, etc., preferably tert-butoxy carbonyl azide or tert-butyl phenyl carbonate. An amount of Compound (17b) to be used is generally 1 to 3-fold mol amount, preferably 1 to 1.5-fold mol amount based on 1 mol of Compound (15).

As the inert solvent to be used, it is not specifically limited so long as it does not inhibit the reaction and dissolves the starting materials with a certain extent, and there may be mentioned, for example, an ether such as tetrahydrofuran, 1,4-dioxane or 1,2-dimethoxyethane, etc.; an amide such as N,N-dimethylformamide, N,N-dimethylacetamide or N-methylpyrrolidone, etc.; a sulfoxide such as dimethylsulfoxide, etc.; or a mixed solvent of an optional combination of the above, etc., preferably N,N-dimethylformamide.

As the base to be used, there may be mentioned, for example, an alkali metal such as metal sodium or metal potassium, etc.; an alkali metal hydride such as sodium hydride or potassium hydride, etc.; an alkali metal amide such as lithium amide, sodium amide, lithium diisopropyl amide or lithium bistrimethylsilyl amide, etc.; or an alkali metal alkoxide such as sodium tert-butoxide or potassium tert-butoxide, etc., and the like, preferably sodium hydride. An amount of the base to be used is generally 1 to 3-fold mol amount, preferably 1 to 1.5-fold mol amount based on 1 mol of Compound (15).

A reaction temperature may vary depending on a kind, an amount to be used of starting materials, solvent(s), etc., and is generally in the range of −80° C. to 100° C., preferably 0° C. to 60° C.

A reaction time may vary depending on a reaction temperature, etc., and is generally for 10 minutes to 240 hours, preferably 1 hour to 48 hours.

Step 4A3 is a step of preparing Compound (18c) in which R 5c is introduced into the NH group of the pyrrole ring of Compound (15) as a protective group by reacting a pyrrole compound (15) with Compound (17c) in an inert solvent in the presence of a chloride or an acid, which is another method for introducing a THP group.

An amount of Compound (17c) to be used is generally 1 to 5-fold mol amount, preferably 1 to 3-fold mol amount based on 1 mol of Compound (15).

As the inert solvent to be used, it is not specifically limited so long as it does not inhibit the reaction and dissolves the starting materials with a certain extent, and there may be mentioned, for example, an ether such as diethyl ether, tetrahydrofuran, 1,4-dioxane or 1,2-dimethoxyethane, etc.; an ester such as methyl acetate or ethyl acetate, etc.; a nitrile such as acetonitrile or propionitrile, etc.; a halogenated aliphatic hydrocarbon such as dichloromethane, chloroform or 1,2-dichloroethane, etc.; or a mixed solvent of an optional combination of the above, etc., preferably diethyl ether, tetrahydrofuran, acetonitrile, dichloromethane or 1,2-dichloroethane.

As the chloride or acid to be used, there may be mentioned, for example, a chloride which generates a hydrogen chloride gas in a system such as oxalyl chloride, thionyl chloride or acetyl chloride, etc.; an acid such as a hydrogen chloride gas, methanesulfonic acid or p-toluenesulfonic acid, etc., preferably a hydrogen chloride gas or p-toluenesulfonic acid. An amount of the chloride or the acid to be used is generally 0.05 to 3-fold mol amount, preferably 0.1 to 0.5-fold mol amount based on 1 mol of Compound (15).

A reaction temperature may vary depending on a kind, an amount to be used of starting materials, solvent(s), etc., and is generally in the range of −20° C. to 100° C., preferably 0° C. to 50° C.

A reaction time may vary depending on a reaction temperature, etc., and is generally for 10 minutes to 48 hours, preferably 1 hour to 24 hours.

Step 4B (Steps 4B1, 4B2 and 4B3) is a step of preparing a corresponding formyl compound (19a), (19b) or (19c) by treating each of Compound (18a), (18b) or (18c) with an oxidizing agent. This step is carried out in the same manner as in the above-mentioned “Step 3F” except for using Compound (18a), (18b) or (18c) in place of Compound (15).

Step 4C (Steps 4C1, 4C2 and 4C3) is a step of preparing Compound (6a), (6b) or (6c) each having a corresponding pyrrolopyridazinone skeleton by reacting Compound (19a), (19b) or (19c) with hydrazine monohydrate, respectively. This step is carried out in the same manner as in the above-mentioned “Step 3G” except for using Compound (19a), (19b) or (19c) in place of Compound (16).

[Preparation Method 5]

wherein R 1 , R 2 , R 3 , R 5 , R 7 , X and Z have the same meanings as defined above, and R 9 represents “an aromatic ring group or heteroaromatic ring group each may be substituted by a substituent(s) selected from Substituent group (c)” having the same meaning as defined above.

Preparation method 5 is a method for preparing Compound (6d) in which R 4 of the above-mentioned intermediate compound (6) is a methyl group substituted by R 9 .

Step 5A is a step of preparing Compound (19) by Suzuki reaction of a boronic acid compound (4) and a pyrrole compound (20). Compound (4) can be prepared by either method of the following mentioned “Preparation method 28”, “Preparation method 29”, “Preparation method 30” or “Preparation method 31”. Compound (20) can be prepared by the following mentioned “Step 23D”. This step is carried out in the same manner as in the above-mentioned “Step 1A” except for using Compound (20) in place of Compound (3).

Step 5B is a step of preparing Compound (6d) having a pyrrolopyridazinone skeleton by reacting Compound (19d) with hydrazine monohydrate. This step is carried out in the same manner as in the above-mentioned “Step 3G” except for using Compound (19d) in place of Compound (16).

[Preparation Method 6]

wherein R 1 , R 2 , R 3 , R 5 , R 6 and X have the same meanings as defined above.

Preparation method 6 is a method for preparing a compound in which R 4 of the above-mentioned intermediate compound (2) or compound (6) is a chlorine, bromine or iodine atom, respectively. This preparation method comprises a step (Step 6A) for preparing Compound (2f) and a step (Step 6B) for preparing Compound (6f) each using a common halogenating agent (21).

Step 6A is a step of preparing a halogenated compound (2f) by reacting Compound (2e) with a halogenating agent (21) in an inert solvent.

Compound (2e) can be prepared, for example, by the above-mentioned “Step 1A”.

As the halogenating agent (21) to be used, there may be mentioned, for example, a chlorinating agent such as chlorine, sulfuryl chloride or N-chlorosuccineimide, etc.; a brominating agent such as bromine, benzyltrimethylammonium tribromide, trimethylphenylammonium tribromide, tetramethylammonium tribromide, tetraethylammonium tribromide, tetrabutylammonium tribromide, pyridinium hydrobromide perbromide or N-bromosuccineimide, etc.; or an iodinating agent such as iodine chloride or N-iodosuccineimide, etc., and the like, preferably N-chlorosuccineimide, N-bromosuccineimide or iodine chloride.

An amount of the halogenating agent to be used is generally 1 to 10-fold mol amount, preferably 1 to 3-fold mol amount based on 1 mol of Compound (2e).

Incidentally, when iodine chloride is used, it is necessary to add magnesium sulfate, sodium hydrogencarbonate and ε-caprolactam as an additive.

In such a case, an amount of the magnesium sulfate generally 1 to 20-fold mol amount, preferably 1 to 5-fold mol amount based on 1 mol of Compound (2e).

An amount of the sodium hydrogencarbonate to be used is generally 1 to 20-fold mol amount, preferably 1 to 5-fold mol amount based on 1 mol of Compound (2e).

An amount of the ε-caprolactam to be used is generally 1 to 10-fold mol amount, preferably 1 to 3-fold mol amount based on 1 mol of Compound (2e).

As the inert solvent to be used, it is not specifically limited so long as it does not inhibit the reaction and dissolves the starting materials with a certain extent, and there may be mentioned, for example, an aromatic hydrocarbon such as benzene or toluene, etc.; an ether such as diethyl ether, tetrahydrofuran, 1,2-dimethoxyethane or 1,4-dioxane, etc.; an alcohol such as methanol, ethanol, propanol or isopropanol, etc.; a nitrile such as acetonitrile or propionitrile, etc.; a halogenated aliphatic hydrocarbon such as dichloromethane, chloroform or 1,2-dichloroethane, etc.; or a mixed solvent of an optional combination of the above, etc., preferably acetonitrile or 1,2-dichloroethane.

A reaction temperature may vary depending on a kind, an amount to be used of starting materials, solvent(s), etc., and is generally in the range of −20° C. to 100° C., preferably 0° C. to 50° C.

A reaction time may vary depending on a reaction temperature, etc., and is generally for 10 minutes to 48 hours, preferably 1 hour to 24 hours.

Step 6B is a step of preparing a halogenated compound (6f) by reacting Compound (6e) with a halogenating agent (21) in an inert solvent. Compound (6e) can be prepared, for example, by the above-mentioned “Step 1A”. This step is carried out in the same manner as in the above-mentioned “Step 6A” except for using Compound (6e) in place of Compound (2e).

[Preparation Method 7]

wherein R 1 , R 2 , R 3 , R 5 , R 6 , X and Z have the same meanings as defined above, and R 4″ represents a C 1 -C 8 alkyl group, a C 2 -C 6 alkenyl group, “a C 3 -C 6 cycloalkyl group which may be substituted by a substituent(s) selected from Substituent group (b)”, “an aromatic ring group or heteroaromatic ring group each of which may be substituted by a substituent(s) selected from Substituent group (c)” or “C 1 -C 2 alkyl group which is substituted by an aromatic ring group or heteroaromatic ring group which may be substituted by a group selected from Substituent group (c), and may be substituted by a hydroxy group” (provided that the nitrogen atom of the heteroaromatic ring group may be protected by R 5 .) which are defined in R 4 .

Preparation method 7 is a method for preparing a compound in which R 4 of the above-mentioned intermediate compound (2) or compound (6) is both R 4 . This preparation method comprises a step (Step 7A) for preparing Compound (2g) by applying Compound (2f) and a boronic acid compound (22) to Suzuki reaction, and a step (Step 7B) for preparing Compound (6g) by applying Compound (6f) and a boronic acid compound (22) to Suzuki reaction.

Step 7A is a step of preparing Compound (2g) by reacting Compound (2f) with Compound (22) in the presence or absence of an inert solvent (preferably in the presence) and in the presence of either a base or a fluoride (provided that R 5 is a SEM group, a base is preferred.) and a palladium catalyst.

Compound (2f) can be prepared by the above-mentioned “Step 6A”.

As the boronic acid compound (22) to be used, there may be mentioned, for example, an alkylboronic acid such as methylboronic acid, ethylboronic acid, propylboronic acid, butylboronic acid, isobutylboronic acid, hexylboronic acid or octylboronic acid, etc.; an alkenylboronic acid such as cis-propenylboronic acid or trans-propenylboronic acid, etc.; a cycloalkylboronic acid such as cyclopropylboronic acid, etc.; a phenylboronic acid which may be substituted such as phenylboronic acid, 2-carboxyphenylboronic acid, 3-carboxyphenylboronic acid, 4-carboxyphenylboronic acid, 2-fluorophenylboronic acid, 3-fluorophenylboronic acid, 4-fluorophenylboronic acid, 2,3-difluorophenylboronic acid, 3,4-difluorophenylboronic acid, 2-chlorophenylboronic acid, 3-chlorophenylboronic acid, 4-chlorophenylboronic acid, 2,3-dichlorophenylboronic acid, 3,4-dichlorophenylboronic acid, 2-cyanophenylboronic acid, 3-hydroxyphenylboronic acid, 4-hydroxyphenylboronic acid, 3-methylphenylboronic acid, 4-methylphenylboronic acid, 3-isopropylphenylboronic acid, 4-isopropylphenylboronic acid, 3-methoxyphenylboronic acid, 4-methoxyphenylboronic acid, 3-cyanophenylboronic acid, 4-cyanophenylboronic acid, 3-trifluoromethylphenylboronic acid, 4-trifluoromethylphenylboronic acid, 2-methoxycarbonylphenylboronic acid or 3-nitrophenylboronic acid, etc.; an aralkylboronic acid such as phenethylboronic acid, etc.; a thienylboronic acid which may be substituted such as 2-thienylboronic acid, 3-thienylboronic acid, 5-cyano-2-thienylboronic acid or 5-methyl-2-thienylboronic acid, etc.; a pyrazolylboronic acid which may be substituted such as 1-(2-trimethylsilylethoxymethyl)-4-pyrazolylboronic acid, etc.: or a pinacol ester of the above-mentioned boronic acid, etc. An amount of Compound (22) to be used is generally 1 to 5-fold mol amount, preferably 1.5 to 3-fold mol amount based on 1 mol of Compound (2f).

This step is carried out in the same manner as in the above-mentioned “Step 1A” except for using Compound (2f) in place of Compound (3), and Compound (22) with the above-mentioned equivalent number in place of Compound (4).

Step 7B is a step of preparing Compound (6g) by reacting Compound (6f) with Compound (22) in the presence or absence of an inert solvent (preferably in the presence) and in the presence of either a base or a fluoride (provided that R 5 is a SEM group, a base is preferred.) and a palladium catalyst.

Compound (6f) can be prepared by the above-mentioned “Step 6B”.

An amount of Compound (22) to be used is generally 1 to 5-fold mol amount, preferably 1.5 to 3-fold mol amount based on 1 mol of Compound (6f).

This step is carried out in the same manner as in the above-mentioned “Step 1A” except for using Compound (6f) in place of Compound (3), and Compound (22) with the above-mentioned equivalent number in place of Compound (4).

[Preparation Method 8]

wherein R 1 , R 2 , R 3 , R 4 , R 5 , R 6 and X have the same meanings as defined above, W represents a trimethylsilyl group or triethylsilyl group, R 10 represents “a C 3 -C 6 cycloalkyl group which may be substituted by a substituent(s) selected from Substituent group (b)” or “a C 1 -C 6 alkyl group” (the “C 1 -C 6 alkyl group” has the same meaning as the unsubstituted “C 1 -C 6 alkyl group” defined in R 4 .) having the same meanings as defined above, and R 10′ represents a C 1 -C 4 alkyl group having the same meaning as defined above.

Preparation method 8 is a method for preparing a compound in which an ethynyl group the terminal of which is substituted by W, R 10 or R 10′ is introduced at the 3-position of the pyrrolopyridazine ring.

This preparation method comprises

(1) Step 8A1 for preparing Compound (2h) by reacting Compound (2f) with an acetylene-terminated compound (23a),

(2) Step 8A2 for preparing Compound (2i) by reacting Compound (2f) with an acetylene-terminated compound (23b),

(3) Step 8A3 for preparing Compound (2i′) by reacting Compound (2f) with an acetylene-terminated compound (23c),

(4) Step 8B1 for preparing Compound (6h) by reacting Compound (6f) with an acetylene-terminated compound (23a),

(5) Step 8B2 for preparing Compound (61) by reacting Compound (6f) with an acetylene-terminated compound (23b), and

(6) Step 8B3 for preparing Compound (6i′) by reacting Compound (6f) with an acetylene-terminated compound (23c).

These 6 Steps each can be carried out by the reaction of a halogen compound and an acetylene-terminated compound, which is the so-called Sonogashira reaction in the presence of a palladium catalyst, cuprous iodide and an amine.

Step 8A1 is a step of preparing Compound (2h) by reacting Compound (2f) with Compound (23a) in an inert gas atmosphere in the presence of a palladium catalyst, cuprous iodide and an amine and in the absence of a solvent or in an inert solvent.

Compound (2f) can be prepared by the above-mentioned “Step 6A”.

As the inert gas to be used, there may be mentioned, for example, nitrogen, helium or argon gas, etc.

As the palladium catalyst to be used, the palladium catalyst mentioned in the above-mentioned “Step A1” can be used. Incidentally, when tris (dibenzylideneacetone)dipalladium, palladium chloride or palladium acetate is used as the catalyst, it is particularly preferred to coexist an organophosphine compound.

An amount of the palladium to be used as a catalyst in this case is generally 0.0001 to 1-fold mol amount, preferably 0.005 to 0.1-fold mol amount based on 1 mol of Compound (2f).

As the organophosphine compound to be used, triphenylphosphine or tri(o-tolyl)phosphine is preferred. An amount of the organophosphine compound to be used is generally 1 to 10-fold mol amount, preferably 2 to 5-fold mol amount based on 1 mol of the palladium.

An amount of the cuprous iodide to be used is generally 1 to 10-fold mol amount, preferably 1 to 5-fold mol amount based on 1 mol of the palladium.

As the amine to be used, there may be mentioned, for example, isopropylamine, butylamine, diethylamine, diisopropylamine, triethylamine or N,N-diisopropylethylamine, preferably diisopropylamine. An amount of the amine to be used is generally 1 to 10-fold mol amount, preferably 2 to 5-fold mol amount based on 1 mol of Compound (2f), and it may be used markedly excessively as a solvent.

As the inert solvent to be used, it is not specifically limited so long as it does not inhibit the reaction and dissolves the starting materials with a certain extent, and there may be mentioned, for example, an aromatic hydrocarbon such as benzene or toluene, etc.; an ether such as tetrahydrofuran, 1,2-dimethoxyethane or 1,4-dioxane, etc.; an ester such as methyl acetate or ethyl acetate, etc.; an amide such as N,N-dimethylformamide, N,N-dimethylacetamide or N-methylpyrrolidone, etc.; a sulfoxide such as dimethylsulfoxide, etc.; a nitrile such as acetonitrile or propionitrile, etc.; or a mixed solvent of an optional combination of the above, etc., preferably N,N-dimethylformamide, N,N-dimethylacetamide, N-methylpyrrolidone, dimethylsulfoxide or acetonitrile.

An amount of Compound (23a) to be used is generally 1 to 3-fold mol amount, preferably 1 to 1.5-fold mol amount based on 1 mol of Compound (2f).

A reaction temperature may vary depending on a kind, an amount to be used of starting materials, solvent(s), etc., and is generally in the range of 0° C. to 200° C., preferably 50° C. to 150° C.

A reaction time may vary depending on a reaction temperature, etc., and is generally for 10 minutes to 240 hours, preferably 1 hour to 48 hours.

Step 8A2 is carried out in the same manner as in the above-mentioned “Step 8A1” except for using Compound (23b) in place of Compound (23a).

Step 8A3 is carried out in the same manner as in the above-mentioned “Step 8A1” except for using Compound (23c) in place of Compound (23a).

Step 8B1 is carried out in the same manner as in the above-mentioned “Step 8A1” except for using Compound (6f) in place of Compound (2f). Compound (6f) can be prepared by the above-mentioned “Step 6B”.

Step 8B2 is carried out in the same manner as in the above-mentioned “Step 8A1” except for using Compound (6f) in place of Compound (2f), and Compound (23b) in place of Compound (23a).

Step 8B3 is carried out in the same manner as in the above-mentioned “Step 8A1” except for using Compound (6f) in place of Compound (2f), and Compound (23c) in place of Compound (23a).

[Preparation Method 9]

wherein R 1 , R 2 , R 3 , R 5 , R 6 and W have the same meanings as defined above.

Preparation method 9 is a method for preparing Compound (2l) or Compound (6l) in which R 4 of the above-mentioned intermediate compound (2) or compound (6) is an ethyl group, respectively. This preparation method comprises steps (Step 9A1-Step 9B1-Step 9C1) for preparing Compound (6l) from Compound (6h), and steps (Step 9A2-Step 9B2-Step 9C2) for preparing Compound (2l) from Compound (2h).

Step 9A1 is a step of preparing Compound (6j) in which the protective group at the terminal ethynyl group is removed by treating Compound (6h) with a base in an inert solvent.

Compound (6h) can be prepared by the above-mentioned “Step 8B1”.

As the inert solvent to be used, it is not specifically limited so long as it does not inhibit the reaction and dissolves the starting materials with a certain extent, and there may be mentioned, for example, an alcohol such as methanol, ethanol, propanol, isopropanol or tert-butanol, etc.; an ether such as diethyl ether, tetrahydrofuran, 1,2-dimethoxyethane or 1,4-dioxane, etc.; an amide such as N,N-dimethylformamide or N-methylpyrrolidone, etc.; a sulfoxide such as dimethylsulfoxide, etc.; a nitrile such as acetonitrile or propionitrile, etc.; water; or a mixed solvent of an optional combination of the above, etc., preferably methanol, ethanol, methanol-water or ethanol-water mixed solvent.

As the base to be used, there may be mentioned, for example, an alkali metal hydroxide such as lithium hydroxide, sodium hydroxide or potassium hydroxide, etc.; an alkali metal carbonate such as lithium carbonate, sodium carbonate or potassium carbonate, etc.; an alkali metal alkoxide such as sodium methoxide, sodium ethoxide or potassium tert-butoxide, etc.; or an organic base such as tetramethylguanidine, etc., and the like, preferably sodium hydroxide, potassium hydroxide, sodium carbonate or potassium carbonate. An amount of the base to be used is generally 0.1 to 100-fold mol amount, preferably 1 to 10-fold mol amount based on 1 mol of Compound (6h).

A reaction temperature may vary depending on a kind, an amount to be used of starting materials, solvent(s), etc., and is generally in the range of 0° C. to 200° C., preferably 10° C. to 100° C.

A reaction time may vary depending on a reaction temperature, etc., and is generally for 10 minutes to 24 hours, preferably 1 hour to 12 hours.

Step 9B1 is a step of preparing Compound (6k) in which R 4 is a vinyl group by subjecting Compound (6j) in which R 4 of Compound (6) is an ethynyl group to hydrogenation reduction by using a Lindlar catalyst.

An amount of the Lindlar catalyst to be used is generally 0.0005 to 1-fold mol amount, preferably 0.01 to 0.1-fold mol amount based on 1 mol of Compound (6j).

Step 9B1 can be carried out in the same manner as in the above-mentioned “treatment under hydrogenation decomposition conditions of Step 1B” except that a catalyst to be used is a Lindlar catalyst. Provided that it is necessary not to co-exist an acid.

Step 9C1 is a step of preparing Compound (6l) in which R 4 is an ethyl group by subjecting Compound (6k) in which R 4 of Compound (6) is a vinyl group to hydrogenation reduction in the presence of a catalyst. Step 9C1 can be carried out in the same manner as in the above-mentioned “treatment under hydrogenation decomposition conditions of Step 1B”. Provided that in this case it is necessary not to co-exist an acid.

Step 9A2 is a step of preparing Compound (2j) in which the protective group at the terminal of the ethynyl group is removed by treating Compound (2h) with a base in an inert solvent. Compound (2h) can be prepared by the above-mentioned “Step 8A1”. Step 9A2 can be carried out in the same manner as in the above-mentioned “Step 9A1” except for using Compound (2h) in place of Compound (6h).

Step 9B2 is a step of preparing Compound (2k) in which R 4 is a vinyl group by subjecting Compound (2j) in which R 4 of Compound (2) is an ethynyl group to hydrogenation reduction using a Lindlar catalyst. Step 9B2 can be carried out in the same manner as in the above-mentioned “Step 9B1” except for using Compound (2j) in place of Compound (6j).

Step 9C2 is a step of preparing Compound (2i) in which R 4 of Compound (2) is an ethyl group by subjecting Compound (2k) to hydrogenation reduction using a catalyst. Step 9C2 can be carried out in the same manner as in the above-mentioned “Step 9C1” except for using Compound (2k) in place of Compound (6k).

[Preparation Method 10]

wherein R 1 , R 2 , R 3 , R 5 , R 6 , R 10 and R 10′ have the same meanings as defined above.

Preparation method 10 is a method for preparing Compound (6n) or Compound (2n) in which R 4 in the above-mentioned intermediate compound (6) or compound (2) is an ethyl group substituted by R 10 , or Compound (6m) or Compound (2m) in which R 4 of the same is a vinyl group substituted by R 10′ , respectively.

This preparation method comprises Step 10A1 for preparing Compound (6m) from Compound (6i′), Step 10B1 for preparing Compound (6n) from Compound (6i), Step 10A2 for preparing Compound (2m) from Compound (2i′), and Step 10B2 for preparing Compound (2n) from Compound (2i).

Step 10A1 is a step of preparing an olefin compound (6m) by subjecting an acetylene compound (6i′) to hydrogenation reduction using a Lindlar catalyst. Compound (6i′) can be prepared by the above-mentioned “Step 8B3”. This step is carried out in the same manner as in the above-mentioned “Step 9B1” except for using Compound (6i′) in place of Compound (6j).

Step 10A2 is a step of preparing an olefin compound (2m) by subjecting an acetylene compound (2i′) to hydrogenation reduction using a Lindlar catalyst. Compound (2i′) can be prepared by the above-mentioned “Step 8A3”. This step is carried out in the same manner as in the above-mentioned “Step 9B1” except for using Compound (2i′) in place of Compound (6j).

Step 10B1 is a step of preparing Compound (6n) by subjecting an acetylene compound (6i) to hydrogenation reduction in the presence of a catalyst. Compound (6i) can be prepared by the above-mentioned “Step 8B2”. This step is carried out in the same manner as in the above-mentioned “Step 9C1” except for using Compound (6i) in place of Compound (6k).

Step 10B2 is a step of preparing Compound (2n) by subjecting an acetylene compound (2i) to hydrogenation reduction in the presence of a catalyst. Compound (2i) can be prepared by the above-mentioned “Step 8A2”. This step is carried out in the same manner as in the above-mentioned “Step 9C1” except for using Compound (2i) in place of Compound (6k).

[Preparation Method 11]

wherein R 1 , R 2 , R 3 , R 5 , R 6 and X have the same meanings as defined above, R 11 and R 12 may be the same or different from each other, and each represents a hydrogen atom, C 1 -C 4 alkoxy group or C 1 -C 6 alkyl group. (provided that R 11 and R 12 are both C 1 -C 6 alkyl groups, a total carbon number of R 11 and R 12 is 6 or less.)

Preparation method 11 is a method for preparing compounds in which R 4 of the above-mentioned intermediate compound (2) or compound (6) is a vinyl group or ethyl group each substituted by R 11 or R 12 , respectively. This preparation method comprises steps (Step 11A1-Step 11B1) for preparing Compound (6p) from Compound (6f), and steps (Step 11A2-Step 11B2) for preparing Compound (2p) from Compound (2f).

Step 11A1 is a step of preparing Compound (6o) by reacting Compound (6f) with Compound (24) in an inert gas atmosphere and in the presence of a palladium catalyst and a base in an inert solvent.

Compound (6f) can be prepared by the above-mentioned “Step 6B”.

As the inert gas to be used, there may be mentioned, for example, nitrogen, helium or argon gas, etc.

As the palladium catalyst to be used, the palladium catalyst mentioned in the above-mentioned “Step A1” can be used, and co-presence of triphenylphosphine or tri(otolyl)phosphine is preferred.

An amount of the palladium catalyst to be used is generally 0.01 to 1-fold mol amount, preferably 0.01 to 0.3-fold mol amount based on 1 mol of Compound (6f). Compound (24) is a compound which is conventionally known, or can be prepared from a conventionally known compound by a conventionally known method. An amount of Compound (24) to be used is generally 1 to 3-fold mol amount, preferably 1 to 1.5-fold mol amount based on 1 mol of Compound (6f).

As the inert solvent to be used, it is not specifically limited so long as it does not inhibit the reaction and dissolves the starting materials with a certain extent, and there may be mentioned, for example, an amide such as N,N-dimethylformamide, N,N-dimethylacetamide or N-methylpyrrolidone, etc.; a sulfoxide such as dimethylsulfoxide, etc.; or a nitrile such as acetonitrile or propionitrile, etc., and the like, preferably N,N-dimethylformamide.

As the base to be used, there may be mentioned, for example, an amine such as triethylamine, tributylamine, N,N-diisopropylethylamine, pyridine, picoline, 2,6-lutidine or 4-dimethylaminopyridine, etc., preferably triethylamine. An amount of the base to be used is generally 1 to 10-fold mol amount, preferably 1 to 2-fold mol amount based on 1 mol of Compound (6f).

A reaction temperature may vary depending on a kind, an amount to be used of starting materials, solvent(s), etc., and is generally in the range of 0° C. to 200° C., preferably 50° C. to 150° C.

A reaction time may vary depending on a reaction temperature, etc., and is generally for 30 minutes to 48 hours, preferably 1 hour to 24 hours.

Step 11B1 is a step of preparing Compound (6p) by subjecting an olefin compound (6o) to hydrogenation reduction in the presence of a catalyst.

Step 11B1 is carried out in the same manner as in the above-mentioned “Step 9C1” except for using Compound (6o) in place of Compound (6k).

Step 11A2 is carried out in the same manner as in the above-mentioned “Step 11A1” except for using Compound (2f) in place of Compound (6f). Compound (2f) can be prepared by the above-mentioned “Step 6A”.

Step 11B2 is carried out in the same manner as in the above-mentioned “Step 9C1” except for using Compound (2o) in place of Compound (6k).

[Preparation Method 12]

wherein R 1 , R 2 , R 3 , R 5 , R 6 , M, X and Z have the same meanings as defined above, and R 13 represents a C 1 -C 7 alkyl group, a vinyl group or ethynyl group each of the terminal may be substituted by the above-mentioned “C 1 -C 3 alkyl group”, “a C 1 -C 5 alkyl group substituted by a substituent(s) selected from Substituent group (a)”, “a C 3 -C 6 cycloalkyl group which may be substituted by a substituent(s) selected from Substituent group (b)” or “an aromatic ring group or heteroaromatic ring group each may be substituted by a substituent(s) selected from Substituent group (d)”.

(As the C 1 -C 7 alkyl group in R 13 , it represents, for example, a straight or branched alkyl chain such as a methyl, ethyl, propyl, isopropyl, butyl, isobutyl, sec-butyl, tert-butyl, pentyl, isopentyl, neopentyl, tert-pentyl, 1-methylbutyl, 2-methylbutyl, 1,2-dimethylpropyl, 1-ethylpropyl, hexyl, 1-methylpentyl, 2-methylpentyl, 3-methylpentyl, 4-methylpentyl, 1-ethylbutyl, 2-ethylbutyl, 1,1-dimethylbutyl, 2,2-dimethylbutyl, 3,3-dimethylbutyl, 1,3-dimethylbutyl, 2,3-dimethylbutyl, heptyl, 1-methylhexyl, 2-methylhexyl, 3-methylhexyl, 4-methylhexyl, 5-methylhexyl, 1-ethylpentyl, 2-ethylpentyl, 3-ethylpentyl, 1,2-dimethylpentyl, 1,3-dimethylpentyl, 1,4-dimethylpentyl, 2,3-dimethylpentyl, 2,4-dimethylpentyl, 3,4-dimethylpentyl, 1,1-dimethylpentyl, 2,2-dimethylpentyl, 3,3-dimethylpentyl, 4,4-dimethylpentyl or 1-methyl-2-ethylbutyl group, etc.,

as the C 1 -C 5 alkyl group in “a C 1 -C 5 alkyl group substituted by a substituent(s) selected from Substituent group (a)”, it represents, for example, a straight or branched alkyl chain such as a methyl, ethyl, propyl, isopropyl, butyl, isobutyl, sec-butyl, tert-butyl, pentyl, isopentyl, neopentyl, tert-pentyl, 1-methylbutyl, 2-methylbutyl and 1,2-dimethylpropyl group, etc., and

Substituent group (d) in “an aromatic ring group or heteroaromatic ring group each may be substituted by a substituent(s) selected from Substituent group (d)” represents a C 1 -C 4 alkyl group which may be substituted by a substituent(s) selected from the group consisting of (a halogen atom, a hydroxy group and a carboxy group), a halogen atom, a hydroxy group, a C 1 -C 4 alkoxy group or a C 1 -C 4 alkyl-substituted amino group.)

Preparation method 12 is a method for preparing a compound wherein R 4 of the above-mentioned intermediate compound (2) or compound (6) is a methyl group substituted by R 13 and a hydroxy group, or a compound wherein R 4 of the same is a methyl group substituted by R 13 , respectively. This preparation method comprises steps (Step 12A1-Step 12B1-Step 12C1) for preparing Compound (6r) from Compound (4) and Compound (25a), and steps (Step 12A2-Step 12B2-Step 12C2) for preparing Compound (2r) from Compound (4) and Compound (25b).

Step 12A1 is a step of preparing Compound (26a) by reacting Compound (25a) with a boronic acid compound (4) in an inert gas atmosphere in an inert solvent and in the presence of a palladium catalyst and a base. Compound (4) can be prepared by either of the methods of the following mentioned “Preparation method 28”, “Preparation method 29”, “Preparation method 30” or “Preparation method 31”. Compound (25a) can be prepared by the following mentioned “Step 26A2-Step 26B2” when X is a bromine atom, and by the following mentioned “Step 26A2-Step 26B2” when X is a chlorine atom or iodine atom, except for the case where a chlorinating agent or iodinating agent of the above-mentioned halogenating agent (21) is used. Step 12A1 is carried out in the same manner as in the above-mentioned “Step 1A” except for using Compound (25a) in place of Compound (3), and using tetrakis(triphenylphosphine)palladium as a catalyst.

Step 12B1 is a step of preparing Compound (6q) having a hydroxy group by reacting Compound (26a) having a formyl group with an organometallic compound (27) in an inert solvent.

As the organometallic compound (27) to be used, there may be mentioned, for example, an organolithium reagent such as methyl lithium, butyl lithium or phenyl lithium, etc.; or an organomagnesium reagent (Grignard reagent) such as methyl magnesium chloride, methyl magnesium bromide, ethyl magnesium chloride, ethyl magnesium bromide, propyl magnesium chloride, propyl magnesium bromide, butyl magnesium chloride, butyl magnesium bromide, vinyl magnesium bromide, ethynyl magnesium bromide, propynyl magnesium bromide, 3-methyl-1-butynyl magnesium bromide, cyclopropyl magnesium chloride, cyclopropyl magnesium bromide, phenyl magnesium chloride or phenyl magnesium bromide, etc.

Step 12B1 is carried out in the same manner as in the above-mentioned “Step 3B” except for using an organometallic compound (27) in place of the organometallic compound (9), and Compound (26a) (provided that an amount of the organometallic compound (27) to be used is generally 1 to 10-fold mol amount, preferably 2 to 4-fold mol amount based on 1 mol of Compound (26a)) in place of Compound (8), respectively.

Step 12C1 is a step of preparing Compound (6r) by reducing Compound (6q) having a hydroxy group with an organosilane compound or organotin compound in an inert solvent in the presence of an acid or a Lewis acid.

As the acid or Lewis acid to be used, there may be mentioned, for example, trifluoroacetic acid or boron trifluoride diethyl ether complex, etc., preferably trifluoroacetic acid. An amount of the acid or the Lewis acid to be used is generally 0.1 to 100-fold mol amount, preferably 1 to 10-fold mol amount based on 1 mol of Compound (6q), and it may be used markedly excessively as a solvent.

As the organosilane compound or organotin compound to be used, there may be mentioned, for example, an organosilane such as triethylsilane, etc., or an organotin such as tributyltin, etc., and the like, preferably triethylsilane. An amount of the organosilane compound or organotin compound to be used is generally 0.1 to 100-fold mol amount, preferably 1 to 10-fold mol amount based on 1 mol of Compound (6q).

As the inert solvent to be used, it is not specifically limited so long as it does not inhibit the reaction and dissolves the starting materials with a certain extent, and there may be mentioned, for example, a halogenated aliphatic hydrocarbon such as dichloromethane, chloroform or 1,2-dichloroethane, etc.; or an organic acid such as formic acid, acetic acid or propionic acid, etc., and the like, preferably dichloromethane or 1,2-dichloroethane.

A reaction temperature may vary depending on a kind, an amount to be used of starting materials, solvent(s), etc., and is generally in the range of −100° C. to 100° C., preferably 0° C. to 50° C.

A reaction time may vary depending on a reaction temperature, etc., and is generally for 10 minutes to 24 hours, preferably 1 hour to 12 hours.

Step 12A2 is carried out in the same manner as in the above-mentioned “Step 12A1” except for using Compound (25b) in place of Compound (25a). Compound (25b) is prepared by the following mentioned “Step 26A1-Step 26B1” when X is a bromine atom, and by the following mentioned “Step 26A1-Step 26B1” when X is a chlorine atom or iodine atom except for using a chlorinating agent or iodinating agent of the above-mentioned halogenating agent (21).

Step 12B2 is carried out in the same manner as in the above-mentioned “Step 12B1” except for using Compound (26b) in place of Compound (26a). Step 12C2 is carried out in the same manner as in the above-mentioned “Step 12C1” except for using Compound (2q) in place of Compound (6q).

[Preparation Method 13]

wherein R 1 , R 2 , R 3 , R 5 and R 6 have the same meanings as defined above, R 14 and R 15 may be the same or different from each other, and each represents a hydrogen atom or C 1 -C 4 alkyl group. (provided that R 14 and R 15 do not represent hydrogen atoms simultaneously.)

Preparation method 13 is a method for preparing an intermediate compound wherein R 4 of the above-mentioned intermediate compound (6) or compound (2) is an aminomethyl group (the nitrogen atom is substituted by at least one C 1 -C 4 alkyl group). This preparation method comprises steps (Step 13A1-Step 13B1) for preparing Compound (6s) from Compound (26a), and steps (Step 13A2-Step 13B2) for preparing Compound (2s) from Compound (26b).

Step 13A1 is a step of preparing an imine or iminium compound (29a) by reacting Compound (26a) having a formyl group with an organic amine compound (28) in an inert solvent, in the presence of a dehydrating agent.

Compound (26a) can be prepared by the above-mentioned “Step 12A1”.

As the organic amine compound (28) to be used, there may be mentioned, for example, a primary amine such as methylamine, ethylamine, propylamine, isopropylamine, butylamine or isobutylamine, etc.; a secondary amine such as dimethylamine, diethylamine, dipropylamine, diisopropylamine, dibutylamine, methylethylamine, methylpropylamine, butylmethylamine, ethylpropylamine or butylethylamine, etc.; a hydrochloride thereof; or a hydrobromide thereof, etc., preferably dimethylamine, diethylamine, dipropylamine, dimethylamine hydrochloride, diethylamine hydrochloride or dipropylamine hydrochloride.

When a salt is used, there may coexist, for example, a tertiary amine such as triethylamine or N,N-diisopropylethylamine, etc. An amount of the organic amine compound (28) to be used is generally 1 to 10-fold mol amount, preferably 1.5 to 3-fold mol amount based on 1 mol of Compound (26a).

When the organic amine compound is a salt, the above-mentioned tertiary amine can be presented with an equal mol amount.

As the dehydrating agent to be used, there may be mentioned, for example, Molecular Sieve or anhydrous magnesium sulfate, etc. An amount of the dehydrating agent to be used is generally 100 g to 2000 g, preferably 500 g to 1000 g based on 1 mol of Compound (26a).

As the inert solvent to be used, it is not specifically limited so long as it does not inhibit the reaction and dissolves the starting materials with a certain extent, and there may be mentioned, for example, a halogenated aliphatic saturated hydrocarbon such as dichloromethane, chloroform or 1,2-dichloroethane, etc.; or an aromatic hydrocarbon such as benzene or toluene, etc., and the like, preferably dichloromethane or 1,2-dichloroethane.

A reaction temperature may vary depending on a kind, an amount to be used of starting materials, solvent(s), etc., and is generally in the range of −100° C. to 100° C., preferably 0° C. to 50° C.

A reaction time may vary depending on a reaction temperature, etc., and is generally for 10 minutes to 24 hours, preferably 1 hour to 12 hours.

Incidentally, Compound (29a) obtained by the reaction is used in the next step without isolation.

Step 13B1 is a step of preparing Compound (6s) having a substituted aminomethyl group by reducing Compound (29a) using a borohydride compound.

As the borohydride compound to be used, there may be mentioned, for example, sodium borohydride, sodium cyanoborohydride or sodium triacetoxyborohydride, etc., preferably sodium triacetoxyborohydride. An amount of the borohydride compound to be used is generally 1 to 10-fold mol amount, preferably 1.5 to 3-fold mol amount based on 1 mol of Compound (29a).

As the inert solvent to be used, the similar inert solvent in the above-mentioned “Step 13A1” can be used.

A reaction temperature may vary depending on a kind, an amount to be used of starting materials, solvent(s), etc., and is generally in the range of −100° C. to 100° C., preferably 0° C. to 50° C.

A reaction time may vary depending on a reaction temperature, etc., and is generally for 10 minutes to 12 hours, preferably 1 hour to 6 hours.

Step 13A2 is carried out in the same manner as in the above-mentioned “Step 13A1” except for using Compound (26b) in place of Compound (26a). Compound (26b) can be prepared by the above-mentioned “Step 12A2”. Step 13B2 is carried out in the same manner as in the above-mentioned “Step 13B1” except for using Compound (29b) in place of Compound (29a).

[Preparation Method 14]

wherein R 5 , R 6 , R 7 , R 8 and X have the same meanings as defined above, X′ represents a chlorine, bromine or iodine atom, and X and X′ may be the same or different from each other.

Preparation method 14 is a method for preparing Compound (3b) which is a compound in which R 4 of the above-mentioned compound (3) is a chlorine, bromine or iodine atom, or Compound (3b′) which is a partially deprotected product of Compound (3b), respectively, by using Compound (30) as a starting compound.

Step 14A is a step of preparing a half ester compound (31) by treating a malonic acid compound (30) with an equivalent amount of potassium hydroxide in an inert solvent.

Compound (30) is a compound which has been known, or can be prepared from a conventionally known compound according to a conventionally known method.

As the inert solvent to be used, it is not specifically limited so long as it does not inhibit the reaction and dissolves the starting materials with a certain extent, and there may be mentioned, for example, an alcohol such as methanol, ethanol, propanol or isopropanol, etc., and the like, preferably ethanol.

A reaction temperature may vary depending on a kind, an amount to be used of starting materials, solvent(s), etc., and is generally in the range of −100° C. to 150° C., preferably 0° C. to 80° C.

A reaction time may vary depending on a reaction temperature, etc., and is generally for 10 minutes to 24 hours, preferably 1 hour to 12 hours.

Step 14B is a step of preparing Compound (33) by reacting Compound (31) with Compound (32) in an inert solvent in the presence of magnesium chloride and an organic base.

As the inert solvent to be used, it is not specifically limited so long as it does not inhibit the reaction and dissolves the starting materials with a certain extent, and there may be mentioned, for example, an ester such as methyl acetate or ethyl acetate, etc.; a nitrile such as acetonitrile or propionitrile, etc.; an aromatic hydrocarbon such as benzene or toluene, etc.; an ether such as tetrahydrofuran, 1,2-dimethoxyethane or 1,4-dioxane, etc.; or an amide such as N,N-dimethylformamide, N,N-dimethylacetamide or N-methylpyrrolidone, etc., and the like, preferably ethyl acetate or acetonitrile.

An amount of the magnesium chloride to be used is generally 0.5 to 5-fold mol amount, preferably 1 to 2-fold mol amount based on 1 mol of Compound (31).

As the organic base to be used, there may be mentioned, for example, triethylamine, N,N-diisopropylethylamine, 2,6-lutidine or 4-dimethylaminopyridine, etc., preferably triethylamine or N,N-diisopropylethylamine. An amount of the organic base to be used is generally 1 to 10-fold mol amount, preferably 2 to 3-fold mol amount based on 1 mol of Compound (31).

As Compound (32) to be used, there may be mentioned, for example, a conventionally known acid halide compound such as methoxyacetyl chloride, etc. An amount of Compound (32) to be used is generally 0.9 to 2-fold mol amount, preferably 1 to 1.5-fold mol amount based on 1 mol of Compound (31).

A reaction temperature may vary depending on a kind, an amount to be used of starting materials, solvent(s), etc., and is generally in the range of −100° C. to 100° C., preferably 0° C. to 60° C.

A reaction time may vary depending on a reaction temperature, etc., and is generally for 1 hour to 72 hours, preferably 12 hours to 24 hours.

Step 14C is a step of preparing a mixture of a 1,4-diketone compound (34) and a dihydrofuran compound (34′) by subjecting Compound (33) to deacetalation under acidic conditions in an inert solvent.

As the inert solvent to be used, it is not specifically limited so long as it does not inhibit the reaction and dissolves the starting materials with a certain extent, and there may be mentioned, for example, an alcohol such as methanol, ethanol, propanol or isopropanol, etc.; an organic acid such as formic acid, acetic acid, propionic acid or trifluoroacetic acid, etc.; an aromatic hydrocarbon such as benzene or toluene, etc.; a halogenated aliphatic hydrocarbon such as dichloromethane, chloroform or 1,2-dichloroethane, etc.; water; or a mixed solvent of water and an optional combination of the above, etc., preferably water.

As the acid to be used, there may be mentioned, for example, hydrochloric acid, hydrobromic acid, hydroiodic acid, sulfuric acid, phosphoric acid or polyphosphoric acid, etc., preferably phosphoric acid. An amount of the acid to be used is generally 1 to 10-fold mol amount, preferably 3 to 6-fold mol amount based on 1 mol of Compound (33).

A reaction temperature may vary depending on a kind, an amount to be used of starting materials, solvent(s), etc., and is generally in the range of −100° C. to 50° C., preferably 0° C. to 20° C.

A reaction time may vary depending on a reaction temperature, etc., and is generally for 1 hour to 24 hours, preferably 2 hours to 12 hours.

Compound (34) and Compound (34′) can be used in the next step without separation, and gives the same compound (35).

Step 14D is a step of preparing pyrrole compound (35) by reacting “a mixture of Compound (34) and Compound (34′)” with an ammonium salt (14). This step is carried out in the same manner as in the above-mentioned “Step 3E” except for using “a mixture of Compound (34) and Compound (34′)” in place of Compound (13).

Step 14E is a step of preparing Compound (36) by incorporating a R 5 group into the NH group of the pyrrole ring of Compound (35) as a protective group. This step is carried out in the same manner as in either of the above-mentioned “Step 4A1”, “Step 4A2” or “Step 4A3” except for using Compound (35) in place of Compound (15).

Step 14F is a step of preparing Compound (37) having a formyl group by oxidizing Compound (36). This step is carried out in the same manner as in the above-mentioned “Step 3F” except for using Compound (36) in place of Compound (15).

Step 14G is a step of preparing pyrrolopyridazinone compound (38) by reacting Compound (37) with hydrazine monohydrate. This step is carried out in the same manner as in the above-mentioned “Step 3G” except for using Compound (37) in place of Compound (16).

Step 14H is a step of preparing pyrrolopyridazinone compound (40) by introducing a R 6 group into an amidic NH group of Compound (38) as a protective group.

As the protecting agent (39) to be used, there may be mentioned, for example, benzyl chloride, 4-methoxybenzyl chloride, methoxymethyl chloride, methoxyethoxymethyl chloride, benzyloxymethyl chloride, (2-trimethylsilylethoxy)methyl chloride, tetrahydropyranyl chloride or di(tert-butyl) dicarbonate, etc.

This step is carried out in the same manner as in either of the steps of the above-mentioned “Step 4A1”, “Step 4A2” or “Step 4A3” except for using Compound (38) in place of Compound (15), and using Compound (39) in place of Compound (17a), (17b) or (17c), respectively.

Step 14I is a step of preparing Compound (41a) in which 3-position of the pyrrolopyridazinone ring is halogenated by reacting Compound (40) with a halogenating agent (21). This step is carried out in the same manner as in the above-mentioned “Step 6A” except for using Compound (40) in place of Compound (2e).

Step 14J is a step of preparing 2,3-dihalogeno compound (3b) by further reacting Compound (41a) with a halogenating agent (21). This step is carried out in the same manner as in the above-mentioned “Step 6A” except for using Compound (41a) in place of Compound (2e).

Step 14K is a step of preparing Compound (41b) in which 3-position of the pyrrolopyridazinone ring is halogenated by reacting Compound (38) with a halogenating agent (21). This step is carried out in the same manner as in the above-mentioned “Step 6A” except for using Compound (38) in place of Compound (2e).

Step 14L is a step of preparing 2,3-dihalogeno compound (3b′) by further reacting Compound (41b) with a halogenating agent (21). This step is carried out in the same manner as in the above-mentioned “Step 6A” except for using Compound (41b) in place of Compound (2e).

[Preparation Method 15]

wherein R 7 , R 8 and X have the same meanings as defined above.

Preparation method 15 is another method of preparing Compound (33) in the above-mentioned “Preparation method 14”.

Step 15A is a step of preparing a benzyl ester compound (43) by reacting Compound (31) with a benzyl halide (42) in an inert solvent. Compound (31) can be prepared by the above-mentioned “Step 14A”. As the benzyl halide (42) to be used, there may be mentioned, for example, a benzyl halide such as benzyl chloride and benzyl bromide, etc., preferably benzyl bromide. This step is carried out in the same manner as in the above-mentioned “Step 4A1” except for using a benzyl halide (42) in place of Compound (17a).

Step 15B is a step of preparing a triester compound (44) by reacting Compound (43) with Compound (32) in an inert solvent in the presence of a base.

An amount of Compound (32) to be used is generally 1 to 3-fold mol amount, preferably 1 to 1.5-fold mol amount based on 1 mol of Compound (43).

As the inert solvent to be used, it is not specifically limited so long as it does not inhibit the reaction and dissolves the starting materials with a certain extent, and there may be mentioned, for example, an ether such as tetrahydrofuran, 1,4-dioxane or 1,2-dimethoxyethane, etc.; an amide such as N,N-dimethylformamide, N,N-dimethylacetamide or N-methylpyrrolidone, etc.; or a sulfoxide such as dimethylsulfoxide, etc., preferably N,N-dimethylformamide.

As the base to be used, there may be mentioned, for example, an alkali metal such as metal sodium or metal potassium, etc.; an alkali metal hydride such as sodium hydride or potassium hydride, etc.; an alkali metal amide such as lithium amide, sodium amide, lithium diisopropyl amide or lithium bistrimethylsilyl amide, etc.; or an alkali metal alkoxide such as sodium tert-butoxide or potassium tert-butoxide, etc., and the like, preferably metal sodium or sodium hydride. An amount of the base to be used is generally 1 to 3-fold mol amount, preferably 1 to 1.5-fold mol amount based on 1 mol of Compound (43).

A reaction temperature may vary depending on a kind, an amount to be used of starting materials, solvent(s), etc., and is generally in the range of −20° C. to 100° C., preferably 0° C. to 50° C.

A reaction time may vary depending on a reaction temperature, etc., and is generally for 10 minutes to 24 hours, preferably 1 hour to 12 hours.

Step 15C is a step of preparing Compound (33) by subjecting Compound (44) to hydrogenation decomposition to carry out debenzylation and decarboxylation simultaneously. This step is carried out in the same manner as in “the treatment under hydrogenation decomposition conditions of Step 1B” except for using Compound (44) in place of Compound (2).

[Preparation Method 16]

wherein R 4″ , R 5 , R 6 , X and Z have the same meanings as defined above.

Preparation method 16 is a step of preparing Compound (3c) wherein R 4 of the above-mentioned compound (3) is R 4 , or Compound (3c′) which is a partially deprotected product of Compound (3c). This preparation method comprises steps (Step 16A1-Step 16B1) for preparing Compound (3c) from Compound (41a), and steps (Step 16A2-Step 16B2) for preparing Compound (3c′) from Compound (41b).

Step 16A1 is a step of preparing Compound (41c) by reacting a boronic acid compound (22) with Compound (41a) in an inert gas atmosphere in an inert solvent and in the presence of a palladium catalyst and a base. Compound (41a) can be prepared by the above-mentioned “Step 14I”. Step 16A1 is carried out in the same manner as in the above-mentioned “Step 7A” except for using Compound (41a) in place of Compound (2f).

Step 16B1 is a step of preparing Compound (3c) by reacting Compound (41c) with a halogenating agent (21). Step 16B1 is carried out in the same manner as in the above-mentioned “Step 6A” except for using Compound (41c) in place of Compound (2e).

Step 16A2 is carried out in the same manner as in the above-mentioned “Step 7A” except for using Compound (41b) in place of Compound (2f). Compound (41b) can be prepared, for example, by reacting Compound (38) with a halogenating agent (21) in the same manner as in the above-mentioned “Step 14I”. Step 16B2 is carried out in the same manner as in the above-mentioned “Step 6A” except for using Compound (41d) in place of Compound (2e).

[Preparation Method 17]

wherein R 5 , R 6 , R 13 , M and X have the same meanings as defined above.

Preparation method 17 is a method of preparing Compound (3d) wherein R 4 of the above-mentioned starting compound (3) is a methyl group substituted by R 13 by using Compound (46) as a starting compound.

Step 17A is a step of preparing a formyl compound (47) from Compound (46) in an inert solvent in the presence of a palladium catalyst, a base and a reducing agent under carbon monoxide atmosphere.

Compound (46) is a compound wherein X in the above-mentioned compound (41a) is an iodine atom, and can be prepared by the above-mentioned “Step 14I”.

As the inert solvent to be used, it is not specifically limited so long as it does not inhibit the reaction and dissolves the starting materials with a certain extent, and there may be mentioned, for example, an amide such as N,N-dimethylformamide, N,N-dimethylacetamide or N-methylpyrrolidone, etc.; a sulfoxide such as dimethylsulfoxide, etc.; or a nitrile such as acetonitrile or propionitrile, etc., and the like, preferably N,N-dimethylformamide.

As the palladium catalyst to be used, there may be mentioned, for example, a metal palladium such as palladium-active carbon or palladium black, etc.; an organopalladium complex such as tetrakis(triphenylphosphine)palladium, bis(triphenylphosphine)palladium chloride, 1,1′-bis(diphenylphosphino)ferrocene palladium chloride or tris(dibenzylideneacetone)dipalladium, etc.; or a palladium salt such as palladium chloride or palladium acetate, etc., and the like, preferably palladium acetate. An amount of the palladium as a catalyst to be used is generally 0.0001 to 1-fold mol amount, preferably 0.005 to 0.1-fold mol amount based on 1 mol of Compound (46).

Incidentally, when tris(dibenzylideneacetone)dipalladium, palladium chloride or palladium acetate is used as a catalyst, it is particularly preferred to copresent an organophosphine compound.

As the organophosphine compound to be used, there may be mentioned, for example, tributylphosphine, tri(tertbutyl)phosphine, tricyclohexylphosphine, butyl-di-1-adamantylphosphine, triphenylphosphine, tri(o-tolyl)phosphine, 2-dicyclohexylphosphino-2′,6′-dimethoxybiphenyl, 1,1′-bis(diphenylphosphino)ferrocene or 1,2,3,4,5-pentaphenyl-1′-(di-t-butylphosphino)ferrocene, etc., preferably 1,1′-bis(diphenylphosphino)ferrocene. An amount of the organophosphine compound to be used is generally 1 to 3-fold mol amount, preferably 1.5 to 2.5-fold mol amount based on 1 mol of palladium.

As the amine to be used, there may be mentioned, for example, an amine such as triethylamine, tributylamine, N,N-diisopropylethylamine, pyridine, picoline, 2,6-lutidine or 4-dimethylaminopyridine, etc., preferably triethylamine. An amount of the amine to be used is generally 1 to 10-fold mol amount, preferably 1 to 2-fold mol amount based on 1 mol of Compound (46).

As the reducing agent to be used, there may be mentioned, for example, an organosilane compound such as triethylsilane, etc.; or an organotin compound such as tributyltin, etc., and the like, preferably-triethylsilane. An amount of the reducing agent to be used is generally 1 to 5-fold mol amount, preferably 1.5 to 2.5-fold mol amount based on 1 mol of Compound (46).

A partial pressure of the carbon monoxide is generally 1 atm to 10 atm, preferably 1 atm to 5 atm.

A reaction temperature may vary depending on a kind, an amount to be used of starting materials, solvent(s), etc., and is generally in the range of 0° C. to 200° C., preferably 50° C. to 15° C.

A reaction time may vary depending on a reaction temperature, etc., and is generally for 30 minutes to 72 hours, preferably for 1 hour to 48 hours.

Step 17B is a step of preparing Compound (48) having a hydroxy group by reacting Compound (47) with an organometallic compound (27). This step is carried out in the same manner as in the above-mentioned “Step 3B” except for using an organometallic compound (27) in place of the organometallic compound (9), and using Compound (47) in place of Compound (8).

Step 17C is a step of preparing Compound (49) by reducing Compound (48) having a hydroxy group using an organosilane compound or organotin compound in an inert solvent in the presence of an acid or a Lewis acid. This step is carried out in the same manner as in the above-mentioned “Step 12C1” except for using Compound (48) in place of Compound (6q).

Step 17D is a step of preparing Compound (3d) by reacting Compound (49) with a halogenating agent (21). This step is carried out in the same manner as in the above-mentioned “Step 6A” except for using Compound (49) in place of Compound (2e).

[Preparation Method 18]

wherein R 5 , R 6 , R 10 , R 10′ and W have the same meanings as defined above.

Preparation method 18 is a method for preparing a compound in which an ethynyl group the terminal of which is substituted by W, R 10 or R 10′ is introduced into the 3-position of the pyrrolopyridazine ring of the above-mentioned compound (3).

This preparation method comprises,

Step 18A1 for preparing Compound (3f) by reacting Compound (3e) with an acetylene-terminated compound (23a),

Step 18A2 for preparing Compound (3ga) by reacting Compound (3e) with an acetylene-terminated compound (23b),

Step 18A3 for preparing Compound (3gb) by reacting Compound (3e) with an acetylene-terminated compound (23c),

Step 18B1 for preparing Compound (3f′) by reacting Compound (3e′) with an acetylene-terminated compound (23a),

Step 18B2 for preparing Compound (3ga′) by reacting Compound (3e′) with an acetylene-terminated compound (23b), and

Step 18B3 for preparing Compound (3gb′) by reacting Compound (3e′) with an acetylene-terminated compound (23c).

These 6 Steps are all carried out by the reaction of a halogen compound and an acetylene-terminated compound in the presence of a palladium catalyst, cuprous iodide and an amine, which is so-called Sonogashira reaction.

Step 18A1 is carried out in the same manner as in the above-mentioned “Step 8A1” except for using Compound (3e) in place of Compound (2f). Compound (3e) is a compound wherein X of the above-mentioned compound (3b) is an iodine atom and X′ is a chlorine atom, and can be prepared by the above-mentioned “Step 14J”.

Step 18A2 is carried out in the same manner as in the above-mentioned “Step 8A1” except for using Compound (3e) in place of Compound (2f).

Step 18A3 is carried out in the same manner as in the above-mentioned “Step 8A1” except for using Compound (3e) in place of Compound (2f).

Step 18B1 is carried out in the same manner as in the above-mentioned “Step 8A1” except for using Compound (3e′) in place of Compound (2f). Compound (3e′) is a compound wherein X in the above-mentioned compound (3b′) is an iodine atom, and X′ is a chlorine atom, and can be prepared by the above-mentioned “Step 14L”.

Step 18B2 is carried out in the same manner as in the above-mentioned “Step 8A1” except for using Compound (3e′) in place of Compound (2f), and Compound (23b) in place of Compound (23a), respectively.

Step 18B3 is carried out in the same manner as in the above-mentioned “Step 8A1” except for using Compound (3e′) in place of Compound (2f), and Compound (23c) in place of Compound (23a), respectively.

[Preparation Method 19]

wherein R 5 , R 6 , R 11 and R 12 have the same meanings as defined above.

Preparation method 19 is a method for preparing Compound (3h) wherein R 4 of the above-mentioned compound (3) is a vinyl group substituted by R 11 and R 12 , or Compound (3h′) which is a partially deprotected product of Compound (3h), respectively.

Step 19A is a step for preparing Compound (3h) by applying Compound (3e) to Heck reaction with Compound (24). This step is carried out in the same manner as in the above-mentioned “Step 11A1” except for using Compound (3e) in place of Compound (6f).

Step 19B is a step for preparing Compound (3h′) by applying Compound (3e′) to Heck reaction with Compound (24). This step is carried out in the same manner as in the above-mentioned “Step 11A1” except for using Compound (3e′) in place of Compound (6f).

[Preparation Method 20]

wherein R 5 , R 6 , W and X have the same meanings as defined above.

Preparation method 20 is a method for preparing Compound (3i) wherein R 4 of the above-mentioned compound (3) is an ethyl group, or Compound (3i′) which is a partially deprotected product of Compound (3i), respectively. This preparation method comprises steps (Step 20A1-Step 20B1-Step 20C1-Step 20D1) for preparing Compound (3i) from Compound (46), and steps (Step 20A2-Step 20B2-Step 20C2-Step 20D2) for preparing Compound (3i′) from Compound (46′).

Step 20A1 is a step for preparing an acetylene compound (50) by reacting Compound (46) with an acetylene compound (23a) in an inert gas atmosphere in the absence of a solvent or in an inert solvent and in the presence of a palladium catalyst, cuprous iodide and an amine. This step is carried out in the same manner as in the above-mentioned “Step 8A1” except for using Compound (46) in place of Compound (2f).

Step 20B1 is a step for preparing Compound (51) in which the 3-position of the pyrrolopyridazine ring is an ethynyl group by removing the protective group W at the end of the ethynyl group of Compound (50). This step is carried out in the same manner as in the above-mentioned “Step 9A1” except for using Compound (50) in place of Compound (6h).

Step 20C1 is a step for preparing Compound (52) in which the 3-position is an ethyl group by applying Compound (51) to hydrogenation reduction. This step is carried out in the same manner as in the above-mentioned “Step 9C1” except for using Compound (51) in place of Compound (6k).

Step 20D1 is a step for preparing Compound (31) by reacting Compound (52) with a halogenating agent (21). This step is carried out in the same manner as in the above-mentioned “Step 6A” except for using Compound (52) in place of Compound (2e).

Step 20A2 is carried out in the same manner as in the above-mentioned “Step 8A1” except for using Compound (46′) in place of Compound (2f). Compound (46′) is a compound in which X of the above-mentioned compound (41b) is an iodine atom, and can be prepared by the above-mentioned “Step 14K”.

Step 20B2 is carried out in the same manner as in the above-mentioned “Step 9A1” except for using Compound (50′) in place of Compound (6h).

Step 20C2 is carried out in the same manner as in the above-mentioned “Step 9C1” except for using Compound (51′) in place of Compound (6k).

Step 20D2 is carried out in the same manner as in the above-mentioned “Step 6A” except for using Compound (52′) in place of Compound (2e).

[Preparation Method 21]

wherein R 5 , R 6 , R 10 and X have the same meanings as defined above.

Preparation method 21 is a method for preparing Compound (3j) wherein R 4 of the above-mentioned compound (3) is an ethyl group substituted by R 10 , or Compound (3j′) which is a partially deprotected product of Compound (3j), respectively. This preparation method comprises steps (Step 21A1-Step 21B1-Step 21C1) for preparing Compound (3j) from Compound (46), and steps (Step 21A2-Step 21B2-Step 21C2) for preparing Compound (3j′) from Compound (46′).

Step 21A1 is a step for preparing an acetylene compound (53) by reacting Compound (46) with an acetylene compound (23b) in an inert gas atmosphere in the absence of a solvent or in an inert solvent and in the presence of a palladium catalyst, cuprous iodide and an amine. This step is carried out in the same manner as in the above-mentioned “Step 8A2” except for using Compound (46) in place of Compound (2f).

Step 21B1 is a step for preparing Compound (54) by subjecting Compound (53) to hydrogenation reduction in the presence of a catalyst. This step is carried out in the same manner as in the above-mentioned “Step 9C1” except for using Compound (53) in place of Compound (6k).

Step 21C1 is a step for preparing Compound (3j) by reacting Compound (54) with a halogenating agent (21). This step is carried out in the same manner as in the above-mentioned “Step 6A” except for using Compound (54) in place of Compound (2e).

Step 21A2 is carried out in the same manner as in the above-mentioned “Step 8A2” except for using Compound (46′) in place of Compound (2f).

Step 21B2 is carried out in the same manner as in the above-mentioned “Step 9C1” except for using Compound (53′) in place of Compound (6k).

Step 21C2 is carried out in the same manner as in the above-mentioned “Step 6A” except for using Compound (54′) in place of Compound (2e).

[Preparation Method 22]

wherein R 5 , R 6 , R 11 , R 12 and X have the same meanings as defined above.

Preparation method 22 is a method for preparing Compound (3k) wherein R 4 of the above-mentioned Compound (3) is an ethyl group substituted by R 11 and R 12 , or Compound (3k′) which is a partially deprotected product of Compound (3k), respectively. This preparation method comprises steps (Step 22A1-Step 22B1-Step 22C1) for preparing Compound (3k) from Compound (46), and steps (Step 22A2-Step 22B2-Step 22C2) for preparing Compound (3k′) from Compound (46′).

Step 22A1 is a step for preparing an olefin compound (55) by reacting Compound (46) with Compound (24) in an inert gas atmosphere in an inert solvent and in the presence of a palladium catalyst and a base. This step is carried out in the same manner as in the above-mentioned “Step 11A1” except for using Compound (46) in place of Compound (6f).

Step 22B1 is a step for preparing Compound (56) by subjecting Compound (55) to hydrogenation reduction in the presence of a catalyst. This step is carried out in the same manner as in the above-mentioned “Step 9C1” except for using Compound (55) in place of Compound (6k).

Step 22C1 is a step for preparing a halogenated compound (3k) by reacting Compound (56) with a halogenating agent (21). This step is carried out in the same manner as in the above-mentioned “Step 6A” except for using Compound (56) in place of Compound (2e).

Step 22A2 is carried out in the same manner as in the above-mentioned “Step 11A1” except for using Compound (46′) in place of Compound (6f).

Step 22B2 is carried out in the same manner as in the above-mentioned “Step 9C1” except for using Compound (55′) in place of Compound (6k).

Step 22C2 is carried out in the same manner as in the above-mentioned “Step 6A” except for using Compound (56′) in place of Compound (2e).

[Preparation Method 23]

wherein R 5 , R 7 , R 9 and X have the same meanings as defined above.

Preparation method 23 is a method for preparing Compound (31) wherein R 4 of the above-mentioned compound (3) is a methyl group substituted by R 9 by using Compound (37) as a starting compound.

Step 23A is a step for preparing a halogenated pyrrole compound (57) by reacting a pyrrole compound (37) with a halogenating agent (21). Compound (37) can be prepared by the above-mentioned “Step 14F”. This step is carried out in the same manner as in the above-mentioned “Step 6A” except for using Compound (37) in place of Compound (2e).

Step 23B is a step for preparing a boronic acid ester compound (58) by reacting Compound (57) with a bis(pinacolato)diboron in an inert solvent and in the presence of a palladium catalyst and a base. This step is carried out in the same manner as in the above-mentioned “Step 1A” except for selecting 1,4-dioxane as an inert solvent, 1,1′-bis(diphenylphosphino)ferrocene palladium chloride as a palladium catalyst, and potassium acetate as a base, respectively, and using Compound (57) in place of Compound (3), and using bis(pinacolato)diboron in place of Compound (4), respectively.

Step 23C is a step for preparing Compound (60) by reacting Compound (58) with Compound (59) in an inert solvent in an inert gas atmosphere and in the presence of a palladium catalyst and a base. This step is carried out in the same manner as in the above-mentioned “Step 1A” except for selecting a 1,2-dimethoxyethane-water mixed solvent as an inert solvent, tetrakis(triphenylphosphine)palladium as a palladium catalyst, and sodium carbonate as a base, respectively, and using Compound (59) in place of Compound (3), and using Compound (58) in place of Compound (4), respectively.

Step 23D is a step for preparing a halogenated pyrrole compound (20) by reacting Compound (60) with a halogenating agent (21). This step is carried out in the same manner as in the above-mentioned “Step 6A” except for using Compound (60) in place of Compound (2e).

Step 23E is a step for preparing a pyrrolopyridazinone compound (31) by reacting Compound (20) with a hydrazine monohydrate. This step is carried out in the same manner as in the above-mentioned “Step 3G” except for using Compound (20) in place of Compound (16).

[Preparation Method 24]

wherein R 4″ , R 5 , R 7 , X and Z have the same meanings as defined above.

Preparation method 24 is a method for preparing Compound (3m) wherein R 4 of the above-mentioned compound (3) is R 4″ and R 6 is deprotected by using a pyrrole compound (57) as a starting compound.

Step 24A is a step for preparing a pyrrole compound (61) by reacting Compound (57) with Compound (22) in an inert solvent in an inert gas atmosphere and in the presence of a palladium catalyst and a base. Compound (57) can be prepared by the above-mentioned “Step 23A”. This step is carried out in the same manner as in the above-mentioned “Step 1A” except for using Compound (57) in place of Compound (3), and using Compound (22) in place of Compound (4), respectively.

Step 24B is a step for preparing a halogenated pyrrole compound (62) by reacting Compound (61) with a halogenating agent (21). This step is carried out in the same manner as in the above-mentioned “Step 6A” except for using Compound (61) in place of Compound (2e).

Step 24C is a step for preparing a pyrrolopyridazinone compound (3m) by reacting Compound (62) with a hydrazine monohydrate. This step is carried out in the same manner as in the above-mentioned “Step 3G” except for using Compound (62) in place of Compound (16).

[Preparation Method 25]

wherein R 5 , R 6 , R 7 , R 8 and X have the same meanings as defined above.

Preparation method 25 is a method for preparing Compound (3o) wherein R 4 of the above-mentioned Compound (3) is a hydrogen atom using a pyrrole compound (36) as a starting compound.

Step 25A is a step for preparing a halogenated pyrrole compound (63) by reacting a pyrrole compound (36) with a halogenating agent (21). Compound (36) can be prepared by the above-mentioned “Step 14E”. This step is carried out in the same manner as in the above-mentioned “Step 6A” except for using Compound (36) in place of Compound (2e).

Step 25B is a step for preparing a formyl compound (64) by subjecting Compound (63) to oxidation. This step is carried out in the same manner as in the above-mentioned “Step 3F” except for using Compound (63) in place of Compound (15).

Step 25C is a step for preparing a pyrrolopyridazinone compound (3n) by reacting Compound (64) with a hydrazine monohydrate. This step is carried out in the same manner as in the above-mentioned “Step 3G” except for using Compound (64) in place of Compound (16).

Step 25D is a step for preparing Compound (3o) by introducing R 6 as a protective group into amidic NH group of Compound (3n) This step is carried out in the same manner as in the above-mentioned “Step 14H” except for using Compound (3n) in place of Compound (38).

[Preparation Method 26]

wherein R 5 and R 6 have the same meanings as defined above.

Preparation method 26 is a method for preparing a formyl compound (67a) wherein X of Compound (25a) in the above-mentioned “Preparation method 12” is a bromine atom, or a formyl compound (67b) wherein X of Compound (25b) is a bromine atom, respectively. This preparation method comprises steps (Step 26A1-Step 26B1) for preparing Compound (67a) from Compound (65a), and steps (Step 26A2-Step 26B2) for preparing Compound (67b) from Compound (65b).

Step 26A1 is a step for preparing a bromomethyl compound (66a) by reacting Compound (65a) with N-bromosuccineimide as a brominating agent in an inert solvent in the presence of a radical initiator or under photoirradiation.

Compound (65a) is a compound wherein R 4 of Compound (41c) in the above-mentioned “Preparation method 16” is a methyl group, and can be prepared by the above-mentioned “Step 16A1”.

As the inert solvent to be used, there may be mentioned, for example, a halogenated aliphatic hydrocarbon such as dichloromethane, chloroform or 1,2-dichloroethane, etc., and the like, preferably dichloromethane or 1,2-dichloroethane.

An amount of the N-bromosuccineimide to be used is generally 2 to 5-fold mol amount, preferably 2 to 3-fold mol amount based on 1 mol of Compound (65a).

As the radical initiator to be used, there may be mentioned, for example, a radical initiator such as azobisisobutyronitrile or benzoyl peroxide, etc. An amount of the radical initiator to be used is generally 0.001 to 0.1-fold mol amount, preferably 0.01 to 0.05-fold mol amount based on 1 mol of Compound (65a).

A reaction temperature may vary depending on a kind, an amount to be used of starting materials, solvent(s), etc., and is generally in the range of 0° C. to 100° C., preferably 30° C. to 80° C.

A reaction time may vary depending on a reaction temperature, etc., and is generally for 1 hour to 12 hours, preferably 3 hours to 8 hours.

When the reaction is carried out under photoirradiation, it is carried out in the same manner as in the case where the radical initiator is used except for irradiating light using a mercury lamp as a light source.

Step 26B1 is a step for preparing a formyl compound (67a) by reacting Compound (66a) with 2-nitropropane in an inert solvent in the presence of a base.

As the inert solvent to be used, it is not specifically limited so long as it does not inhibit the reaction and dissolves the starting materials with a certain extent, and there may be mentioned, for example, an alcohol such as methanol, ethanol, propanol or isopropanol, etc.; an amide such as N,N-dimethylformamide, N,N-dimethylacetamide or N-methylpyrrolidone, etc.; a sulfoxide such as dimethylsulfoxide, etc.; a nitrile such as acetonitrile or propionitrile, etc.; an ether such as tetrahydrofuran, 1,2-dimethoxyethane or 1,4-dioxane, etc.; or a mixed solvent of an optional combination of the above, etc., preferably ethanol.

As the base to be used, there may be mentioned, for example, an alkali metal such as lithium, sodium or potassium, etc.; an alkali metal hydride such as sodium hydride, etc.; or an alkali metal alkoxide such as sodium methoxide, sodium ethoxide, sodium butoxide or potassium tert-butoxide, etc., and the like, preferably sodium ethoxide. An amount of the base to be used is generally 1 to 20-fold mol amount, preferably 5 to 10-fold mol amount based on 1 mol of Compound (66a).

An amount of the 2-nitropropane to be used is generally 1 to 20-fold mol amount, preferably 5 to 10-fold mol amount based on 1 mol of Compound (66a).

A reaction temperature may vary depending on a kind, an amount to be used of starting materials, solvent(s), etc., and is generally in the range of −20° C. to 100° C., preferably 0° C. to 40° C.

A reaction time may vary depending on a reaction temperature, etc., and is generally for 1 hour to 12 hours, preferably 2 hours to 6 hours.

Step 26A2 is carried out in the same manner as in the above-mentioned “Step 26A1” except for using Compound (65b) in place of Compound (65a). Compound (65b) is a compound wherein R 4 of Compound (41d) in the above-mentioned “Preparation method 16” is a methyl group, and can be prepared by the above-mentioned “Step 16A2”. Step 26B2 is carried out in the same manner as in the above-mentioned “Step 26B1” except for using Compound (66b) in place of Compound (66a).

[Preparation Method 27]

wherein R 5 and R 6 have the same meanings as defined above, and R 16 represents a C 1 -C 5 alkyl group, halogen C 1 -C 4 alkyl group, C 3 -C 6 cycloalkyl group or (C 3 -C 6 cycloalkyl)C 1 -C 2 alkyl group. (As the C 1 -C 5 alkyl group, it represents a straight or branched alkyl chain, for example, a methyl, ethyl, propyl, isopropyl, butyl, isobutyl, sec-butyl, tert-butyl, pentyl, isopentyl, neopentyl, tert-pentyl, 1-methylbutyl, 2-methylbutyl, 1,2-dimethylpropyl or 1-ethylpropyl group, etc., the halogeno C 1 -C 4 alkyl group has the same meaning as the “C 1 -C 4 alkyl group substituted by a halogen atom” defined in Substituent group (c) of the above-mentioned R 4 , the C 3 -C 6 cycloalkyl group has the same meaning as the “C 3 -C 6 cycloalkyl group which may be substituted by a substituent(s) selected from Substituent group (b)” of the above-mentioned R 4 , and as the (C 3 -C 6 cycloalkyl)C 1 -C 2 alkyl group, there may be mentioned, for example, a cyclopropylmethyl, cyclobutylmethyl, cyclopentylmethyl, cyclohexylmethyl, 2-cyclopropylethyl, 2-cyclobutylethyl, 2-cyclopentylethyl or 2-cyclohexylethyl group, etc.)

Preparation method 27 is a method for preparing Compound (3pa) wherein R 4 of the above-mentioned compound (3) is an alkoxymethyl group, or Compound (3pb) which is a partially deprotected product of Compound (3pa), respectively.

Step 27A1 is a step for preparing an ether compound (3pa) by reacting a bromomethyl compound (66a) and an alcohol compound (68) in an inert solvent under basic conditions. Compound (66a) can be prepared by the above-mentioned “Step 26A1”.

An amount of Compound (68) to be used is generally 1 to 50-fold mol amount, preferably 2 to 10-fold mol amount based on 1 mol of Compound (66a), and it may be used markedly excessively as a solvent.

As the inert solvent to be used, it is not specifically limited so long as it does not inhibit the reaction and dissolves the starting materials with a certain extent, and there may be mentioned, for example, an ether such as diethyl ether, tetrahydrofuran, 1,2-dimethoxyethane or 1,4-dioxane, etc.; an amide such as N,N-dimethylformamide, N,N-dimethylacetamide or N-methylpyrrolidone, etc.; or a mixed solvent thereof, etc., preferably tetrahydrofuran.

As the base to be used, there may be mentioned an alkali metal such as lithium, sodium or potassium, etc.; an alkali metal hydride such as sodium hydride or potassium hydride, etc.; or an alkali metal alkoxide such as sodium methoxide, sodium ethoxide, sodium butoxide, sodium tert-butoxide or potassium tert-butoxide, etc., and the like, preferably sodium hydride. An amount of the base to be used is generally 1 to 20-fold mol amount, preferably 1 to 10-fold mol amount based on 1 mol of Compound (66a).

A reaction temperature may vary depending on a kind, an amount to be used of starting materials, solvent(s), etc., and is generally in the range of 0° C. to 100° C., preferably 10° C. to 50° C.

A reaction time may vary depending on a reaction temperature, etc., and is generally for 10 minutes to 12 hours, preferably 1 hour to 6 hours.

Step 27A2 is carried out in the same manner as in the above-mentioned “Step 27A1” except for using Compound (66b) in place of Compound (66a), and a preferred amount of the base to be used is 2 to 10-fold mol amount based on 1 mol of Compound (66b). Compound (66b) can be prepared by the above-mentioned “Step 26A2”.

[Preparation Method 28]

wherein R 1 , R 2 , R 3 and X have the same meanings as defined above.

Preparation method 28 is a method for preparing Compound (4a) wherein Z of the above-mentioned compound (4) is a 4,4,5,5-tetramethyl-[1,3,2]dioxaborolanyl group by using Compound (69) as a starting compound.

Step 28A is a step for preparing a lithiated compound (70) by reacting Compound (69) with an organolithium compound in an inert solvent. Compound (69) is a compound which is conventionally known, or can be prepared by either of the following mentioned “Preparation method 32”, “Preparation method 36”, “Preparation method 37”, “Preparation method 38”, “Preparation method 39” or “Preparation method 40”.

As the inert solvent to be used, it is not specifically limited so long as it does not inhibit the reaction and dissolves the starting materials with a certain extent, and there may be mentioned, for example, an ether such as diethyl ether, tetrahydrofuran or 1,2-dimethoxyethane, etc.; an aliphatic saturated hydrocarbon such as pentane, hexane, cyclohexane or heptane, etc.; an aromatic hydrocarbon such as benzene or toluene, etc.; or a mixed solvent of an optional combination of the above, etc., preferably diethyl ether or tetrahydrofuran.

As the organolithium compound, there may be mentioned, for example, an organolithium compound such as butyl lithium or sec-butyl lithium, etc. An amount of the organolithium compound to be used is generally 0.9 to 1.5-fold mol amount, preferably 1 to 1.1-fold mol amount based on 1 mol of Compound (69).

A reaction temperature may vary depending on a kind, an amount to be used of starting materials, solvent(s), etc., and is generally in the range of −80° C. to 20° C., preferably −70° C. to 0° C.

A reaction time may vary depending on a reaction temperature, etc., and is generally for 10 minutes to 12 hours, preferably 30 minutes to 6 hours.

In this step, the lithiated compound (70) can be applied to the next Step 28B without isolation from the reaction mixture.

Step 28B is a step for preparing a boronic acid ester compound (4a) by reacting the lithiated compound (70) with 2-isopropoxy-4,4,5,5-tetramethyl[1,3,2]dioxaborolane in an inert solvent.

The inert solvent to be used in this step is the same solvents as those used in the above-mentioned “Step 28A”.

An amount of the 2-isopropoxy-4,4,5,5-tetramethyl-[1,3,2]dioxaborolane to be used is generally 1 to 2-fold mol amount, preferably 1 to 1.5-fold mol amount based on 1 mol of Compound (69) or Compound (70).

A reaction temperature may vary depending on a kind, an amount to be used of starting materials, solvent(s), etc., and is generally in the range of −80° C. to 50° C., preferably −70° C. to 30° C.

A reaction time may vary depending on a reaction temperature, etc., and is generally for 30 minutes to 6 hours, preferably 30 minutes to 3 hours.

[Preparation Method 29]

wherein R 1 , R 2 , R 3 and X have the same meanings as defined above.

Preparation method 29 is another method for preparing a boronic acid ester compound (4a) described in the above-mentioned “Preparation method 28”.

Step 29 is a step for preparing a boronic acid ester compound (4a) by reacting Compound (69) with bis(pinacolato)diboron in an inert solvent in the presence of a palladium catalyst. This step is carried out in the same manner as in the above-mentioned “Step 1A” except for selecting 1,4-dioxane as an inert solvent, 1,1′-bis(diphenylphosphino)ferrocene palladium chloride as a palladium catalyst and potassium acetate as a base, respectively, and using Compound (69) in place of Compound (3), and bis(pinacolato)diboron in place of Compound (4), respectively.

[Preparation Method 30]

wherein R 1 , R 2 , R 3 and X have the same meanings as defined above.

Preparation method 30 is another method for preparing a boronic acid ester compound (4a) described in the above-mentioned “Preparation method 28”.

Step 30 is a step for preparing a boronic acid ester compound (4a) by reacting Compound (69) with pinacol borane in an inert solvent in the presence of a palladium catalyst. This step is carried out in the same manner as in the above-mentioned “Step 1A” except for selecting 1,4-dioxane, 1,2-dimethoxyethane or toluene as an inert solvent, selecting 1,1′-bis(diphenylphosphino)ferrocene palladium chloride as a palladium catalyst and selecting triethylamine or N,N-diisopropylethylamine as a base, respectively, and using Compound (69) in place of Compound (3) and using pinacol borane in place of Compound (4).

[Preparation Method 31]

wherein R 1 , R 2 and R 3 have the same meanings as defined above.

Preparation method 31 is a method for preparing Compound (4c) wherein Z in the above-mentioned boronic acid compound (4) is a dihydroxyboryl group and using a boronic acid ester compound (4a) as a starting compound.

Step 31A is a step for preparing a boronic acid amine complex compound (4b) by reacting Compound (4a) with diethanolamine in an inert solvent. Compound (4a) can be prepared by either method of the above-mentioned “Preparation method 28”, “Preparation method 29” or “Preparation method 30”.

As the inert solvent to be used, it is not specifically limited so long as it does not inhibit the reaction and dissolves the starting materials with a certain extent, and there may be mentioned, for example, an alcohol such as methanol, ethanol, propanol, isopropanol, butanol or tert-butanol, etc., and the like, preferably isopropanol.

An amount of diethanolamine to be used is generally 1 to 20-fold mol amount, preferably 3 to 10-fold mol amount based on 1 mol of Compound (4a).

A reaction temperature may vary depending on a kind, an amount to be used of starting materials, solvent(s), etc., and is generally in the range of −10° C. to 5° C., preferably 0° C. to 30° C.

A reaction time may vary depending on a reaction temperature, etc., and is generally for 30 minutes to 48 hours, preferably 1 hour to 24 hours.

Step 31B is a step for preparing a boronic acid compound (4c) by hydrolyzing Compound (4b) in an inert solvent under acidic conditions.

As the inert solvent to be used, it is not specifically limited so long as it does not inhibit the reaction and dissolves the starting materials with a certain extent, and there may be mentioned, for example, an ether such as tetrahydrofuran or 1,4-dioxane, etc.; an organic acid such as formic acid, acetic acid, propionic acid or trifluoroacetic acid, etc.; water; or a mixed solvent of an optional combination of the above, etc., preferably water.

As the acid to be used, there may be mentioned, for example, hydrochloric acid, hydrobromic acid, hydroiodic acid, sulfuric acid, phosphoric acid, p-toluenesulfonic acid, methanesulfonic acid or trifluoroacetic acid, etc., preferably hydrochloric acid. An amount of the acid to be used is generally 10 to 2000-fold mol amount, preferably 30 to 300-fold mol amount based on 1 mol of Compound (4b).

A reaction temperature may vary depending on a kind, an amount to be used of starting materials, solvent(s), etc., and is generally in the range of 0° C. to 100° C., preferably 15° C. to 50° C.

A reaction time may vary depending on a reaction temperature, etc., and is generally for 10 minutes to 48 hours, preferably 1 hour to 24 hours.

[Preparation Method 32]

wherein R 1 , R 2 and X have the same meanings as defined above.

Preparation method 32 is another method for preparing Compound (69a) wherein X in the above-mentioned compound (69) is a bromine atom, or Compound (69b) wherein X is a bromine atom, and R 1 is a difluoromethyl group, respectively.

Step 32A is a step for preparing Compound (72) by reacting Compound (71) with bromine in an inert solvent.

Compound (71) is conventionally known or can be prepared by the following mentioned “Preparation method 33”.

As the inert solvent to be used, it is not specifically limited so long as it does not inhibit the reaction and dissolves the starting materials with a certain extent, and there may be mentioned, for example, an alcohol such as methanol, ethanol, propanol or isopropanol, etc.; a nitrile such as acetonitrile or propionitrile, etc.; an ether such as tetrahydrofuran, 1,2-dimethoxyethane or 1,4-dioxane, etc.; a halogenated aliphatic hydrocarbon such as dichloromethane, chloroform or 1,2-dichloroethane, etc.; or a mixed solvent of an optional combination of the above, etc., preferably dichloromethane or 1,4-dioxane.

An amount of bromine to be used is generally 1 to 1.5-fold mol amount, preferably 1 to 1.05-fold mol amount based on 1 mol of Compound (71).

A reaction temperature may vary depending on a kind, an amount to be used of starting materials, solvent(s), etc., and is generally in the range of −80° C. to 50° C., preferably −60° C. to 20° C.

A reaction time may vary depending on a reaction temperature, etc., and is generally for 10 minutes to 6 hours, preferably 30 minutes to 3 hours.

Step 32B is a step for preparing Compound (69a) by reacting Compound (72) with a halogen compound (73) in an inert solvent in the presence of a base.

As the inert solvent to be used, it is not specifically limited so long as it does not inhibit the reaction and dissolves the starting materials with a certain extent, and there may be mentioned, for example, a ketone such as acetone, methyl ethyl ketone or methyl isobutyl ketone, etc.; a nitrile such as acetonitrile or propionitrile, etc.; an amide such as N,N-dimethylformamide, N,N-dimethylacetamide or N-methylpyrrolidone, etc.; or a sulfoxide such as dimethylsulfoxide, etc., preferably acetone or N,N-dimethylformamide.

The halogen compound (73) is a known compound such as methyl iodide, etc., or a compound which can be prepared from a known compound according to a known method. An amount of the halogen compound (73) to be used is generally 1 to 5-fold mol amount, preferably 1 to 1.5-fold mol amount based on 1 mol of Compound (72).

As the base to be used, there may be mentioned, for example, an alkali metal carbonate such as sodium carbonate, potassium carbonate or cesium carbonate, etc.; an alkali metal alkoxide such as sodium methoxide, sodium ethoxide, sodium tert-butoxide or potassium tert-butoxide, etc.; or an alkali metal hydride such as sodium hydride, etc., preferably sodium carbonate or potassium carbonate. An amount of the base to be used is generally 1 to 5-fold mol amount, preferably 1 to 3-fold mol amount based on 1 mol of Compound (72).

A reaction temperature may vary depending on a kind, an amount to be used of starting materials, solvent(s), etc., and is generally in the range of 0° C. to 100° C., preferably 10° C. to 50° C.

A reaction time may vary depending on a reaction temperature, etc., and is generally for 10 minutes to 24 hours, preferably 1 hour to 12 hours.

Step 32C is a step for preparing Compound (69b) by reacting Compound (72) with a difluoromethylating agent (74) in an inert solvent in the presence of a base.

As the inert solvent to be used, it is not specifically limited so long as it does not inhibit the reaction and dissolves the starting materials with a certain extent, and there may be mentioned, for example, an alcohol such as methanol, ethanol, propanol or isopropanol, etc.; a nitrile such as acetonitrile or propionitrile, etc.; an amide such as N,N-dimethylformamide, N,N-dimethylacetamide or N-methylpyrrolidone, etc.; a sulfoxide such as dimethylsulfoxide, etc.; an ether such as tetrahydrofuran, 1,2-dimethoxyethane or 1,4-dioxane, etc.; a halogenated aliphatic hydrocarbon such as dichloromethane, chloroform or 1,2-dichloroethane, etc.; an aromatic hydrocarbon such as benzene or toluene, etc.; water; or a mixed solvent of an optional combination of the above, etc., preferably dichloromethane, 1,4-dioxane or toluene-water mixed solvent.

As the difluoromethylating agent (74) to be used, there may be mentioned, for example, chlorodifluoromethane, chlorodifluoroacetic acid, sodium chlorodifluoroacetate, methyl chlorodifluoroacetate or ethyl chlorodifluoroacetate, etc., preferably chlorodifluoromethane or sodium chlorodifluoroacetate. An amount of the difluoromethylating agent (74) to be used is generally 1 to 10-fold mol amount, preferably 1 to 3-fold mol amount based on 1 mol of Compound (72).

As the base to be used, there may be mentioned, for example, an alkali metal hydroxide such as lithium hydroxide, sodium hydroxide, potassium hydroxide, etc.; or an alkali metal carbonate such as sodium carbonate, potassium carbonate or cesium carbonate, etc., preferably sodium hydroxide or sodium carbonate. An amount of the base to be used is generally 1 to 10-fold mol amount, preferably 1 to 3-fold mol amount based on 1 mol of Compound (72).

Incidentally, when toluene-water mixed solvent is used as an inert solvent, a phase-transfer catalyst such as tetraethylammonium chloride or tetrabutylammonium bromide, etc. may be used.

An amount of the phase-transfer catalyst to be used is generally 0.05 to 10-fold mol amount, preferably 0.1 to 1-fold mol amount based on 1 mol of Compound (72).

A reaction temperature may vary depending on a kind, an amount to be used of starting materials, solvent(s), etc., and is generally in the range of 20° C. to 150° C., preferably 50° C. to 100° C.

A reaction time may vary depending on a reaction temperature, etc., and is generally for 10 minutes to 12 hours, preferably 1 hour to 6 hours.

[Preparation Method 33]

wherein R 1 , R 2 and X have the same meanings as defined above, R 17 represents a methyl group, benzyl group, 4-methoxybenzyl group, cyclopropylmethyl group, MEM group, MOM group or BOM group.

Preparation method 33 is another method for preparing a starting compound (71) described in the above-mentioned “Preparation method 32”.

Step 33A is a step for preparing Compound (77) by reacting Compound (75) with Compound (76). Compound (75) is a known compound such as 2-methoxyphenol or 2-benzyloxyphenol, etc., or a compound which can be prepared from a known compound according to a known method. Compound (76) is a known compound such as methyl iodide or cyclopropylmethyl bromide, etc., or a compound which can be prepared from a known compound according to a known method. This step is carried out in the same manner as in the above-mentioned “Step 32B” except for using Compound (75) in place of Compound (72), and using Compound (76) in place of Compound (73), respectively.

Step 33B is a step for preparing Compound (71) by removing R 17 which is a protective group of Compound (77).

With regard to removal of the protective group, it can be carried out easily by referring to conventionally known literatures (W. Greene and P. G. H. Wuts “Protective Groups in Organic Synthesis” 3 rd Ed., John Wiley & Sons), etc. For example, when R 17 is a methyl group, it is carried out by a method using boron tribromide or sodium ethylthiolate; when R 17 is a 4-methoxybenzyl group, cyclopropylmethyl group, MEM group, MOM group or BOM group, by a method of applying acid treatment; or when R 17 is a benzyl group, 4-methoxybenzyl group or BOM group, by a method of hydrogenation decomposition using a palladium catalyst, respectively.

[Preparation Method 34]

wherein R 1 , R 2 , R 17 and X have the same meanings as defined above.

Preparation method 34 is another method for preparing an intermediate compound (72) described in the above-mentioned “Preparation method 32”.

Step 34A is a step for preparing Compound (78) by reacting Compound (75) with trifluoroacetic anhydride in an inert solvent in the presence of a base catalyst, then brominating the product using N-bromosuccineimide, and further treating the reaction mixture with water. This step is carried out according to the method described in WO 01/19785.

Step 34B is a step for preparing Compound (79) by reacting Compound (78) with Compound (76). This step is carried out in the same manner as in the above-mentioned “Step 32B” except for using Compound (78) in place of Compound (72), and using Compound (76) in place of Compound (73), respectively.

Step 34C is a step for preparing Compound (72) by removing R 17 which is a protective group of Compound (79). This step is carried out in the same manner as in the above-mentioned “Step 33B” except for using Compound (79) in place of Compound (77).

[Preparation Method 35]

wherein R 1 , R 2 , R 17 and X have the same meanings as defined above.

Preparation method 35 is another method for preparing Compound (78) described in the above-mentioned “Preparation method 34” using the known compound (80) as a starting compound.

Step 35A is a step for preparing Compound (82) by reacting Compound (80) with Compound (81) in the presence of a base. As Compound (81), there may be mentioned, for example, known compounds such as methyl iodide, benzyl bromide, cyclopropylmethyl chloride, cyclopropylmethyl bromide, methoxymethyl chloride and methoxyethoxymethyl chloride, etc. This step is carried out in the same manner as in the above-mentioned “Step 32B” except for using Compound (80) in place of Compound (72), and using Compound (81) in place of Compound (73), respectively.

Step 35B is a step for preparing Compound (78) by applying Compound (82) to Baeyer-Villiger oxidation in an inert solvent.

As the inert solvent to be used, it is not specifically limited so long as it does not inhibit the reaction and dissolves the starting materials with a certain extent, and there may be mentioned, for example, a halogenated aliphatic hydrocarbon such as dichloromethane, chloroform or 1,2-dichloroethane, etc., and the like, preferably dichloromethane.

As the oxidizing agent to be used, there may be mentioned, for example, an oxidizing agent such as m-chloroperbenzoic acid and hydrogen peroxide, etc., preferably m-chloroperbenzoic acid. An amount of the oxidizing agent to be used is generally 1 to 10-fold mol amount, preferably 1 to 1.5-fold mol amount based on 1 mol of Compound (82).

A reaction temperature may vary depending on a kind, an amount to be used of starting materials, solvent(s), etc., and is generally in the range of 0° C. to 100° C., preferably 10° C. to 50° C.

A reaction time may vary depending on a reaction temperature, etc., and is generally for 1 day to 7 days, preferably 1 day to 3 days.

[Preparation Method 36]

wherein R 1 , R 17 and X have the same meanings as defined above.

Preparation method 36 is a method for preparing Compound (69c) wherein an oxygen-containing heterocyclic ring formed by ring fusion of R 2 and R 3 of the above-mentioned compound (69) is a 2,2-(1,4-butylene)-tetrahydrofuran ring by using Compound (78) as a starting compound.

Step 36A, Step 36B, Step 36C and Step 36D are carried out according to the method described in WO 96/03399. Compound (78) can be prepared, for example, by the above-mentioned “Preparation method 35”.

Step 36E is a step for preparing a phenol compound (89) by removing R 17 which is a protective group of Compound (88). This step is carried out in the same manner as in the above-mentioned “Step 33B” except for using Compound (88) in place of Compound (77).

Step 36F is a step for preparing Compound (69c) by reacting Compound (89) with a halogen compound (73). This step is carried out in the same manner as in the above-mentioned “Step 32B” except for using Compound (89) in place of Compound (72).

[Preparation Method 37]

wherein R 1 and W have the same meanings as defined above, R 18 and R 19 each represents a hydrogen atom, methyl group or cyclopropyl group (provided that R 18 and R 19 do not represent hydrogen atoms or cyclopropyl groups simultaneously). Also, R 18 and R 19 may form a cyclic C 2 -C 4 alkylene group in combination.

Preparation method 37 is a method for preparing Compound (69d) wherein an oxygen-containing heterocyclic ring formed by ring fusion of R 2 and R 3 of the above-mentioned compound (69) is a 3,6-dihydro-2H-pyran ring by using Compound (90) as a starting compound.

Step 37A is a step for preparing Compound (92) by reacting Compound (90) with Compound (91). Compound (90) can be prepared, for example, in the same manner as in the above-mentioned “Preparation method 35” except for using Compound (73) of the above-mentioned “Step 32B” in place of Compound (81). As Compound (91), there may be mentioned, for example, known compounds such as 3-butyn-2-ol, 2-methyl-3-butyn-2-ol, 1-cyclopropyl-2-propyn-1-ol, 1-ethynylcyclopropanol, 1-ethynylcyclobutanol and 1-ethynylcyclopentanol, etc. This step is carried out in the same method as described in WO 97/43288.

Step 37B is a step for preparing Compound (921) by reacting Compound (90) with Compound (91′). As Compound (91′), there may be mentioned, for example, known compounds such as 4-trimethylsilyl-3-butyn-2-ol, 2-methyl-4-trimethylsilyl-3-butyn-2-ol, 1-cyclopropyl-3-trimethylsilyl-2-propyn-1-ol, 1-trimethylsilylethynylcyclopropanol, 1-trimethylsilylethynylcyclobutanol and 1-trimethylsilylethynylcyclopentanol, etc.

This step is carried out according to the method described in WO 97/43288 similarly as in the above-mentioned “Step 37A”.

Step 37C is a step for preparing Compound (92) by removing a protective group at the end of the ethynyl group of Compound (92′). This step is carried out in the same manner as in the above-mentioned “Step 9A1” except for using Compound (92′) in place of Compound (6h).

Step 37B is a step for preparing Compound (69d) by intramolecular cyclization of Compound (92). This step is carried out according to the method described in WO 97/43288 similarly as in the above-mentioned “Step 37A”.

[Preparation Method 38]

wherein R 1 , R 17 , R 18 and R 19 have the same meanings as defined above.

Preparation method 38 is another method for preparing Compound (69d) wherein an oxygen-containing heterocyclic ring formed by ring fusion of R 2 and R 3 of the above-mentioned compound (69) is a 3,6-dihydro-2H-pyran ring by using Compound (78) as a starting compound.

Step 38A and Step 38B are carried out in the same method as described in WO 97/43288. Compound (78) can be prepared, for example, by the above-mentioned “Preparation method 35”.

Step 38C is a step for preparing Compound (95) by removing R 17 which is a protective group of Compound (94). This step is carried out in the same manner as in the above-mentioned “Step 33B” except for using Compound (94) in place of Compound (77).

Step 38D is a step for preparing Compound (69d) by reacting Compound (95) with a halogen Compound (73). This step is carried out in the same manner as in the above-mentioned “Step 32B” except for using Compound (95) in place of Compound (72).

[Preparation Method 39]

wherein R 18 and R 19 have the same meanings as defined above.

Preparation method 39 is a method for preparing Compound (69e) wherein an oxygen-containing heterocyclic ring formed by ring fusion of R 2 and R 3 of the above-mentioned compound (69) is a 3,6-dihydro-2H-pyran ring and R 1 is a difluoromethyl group by using Compound (95) as a starting compound.

Step 39 is a step for preparing Compound (69e) by reacting Compound (95) with a difluoromethylating agent (74) in an inert solvent in the presence of a base.

Compound (95) can be prepared by the above-mentioned “Step 38C”.

Step 39 is carried out in the same manner as in the above-mentioned “Step 32C” except for using Compound (95) in place of Compound (72).

[Preparation Method 40]

wherein R 1 , R 18 and R 19 have the same meanings as defined above.

Preparation method 40 is a method for preparing Compound (69d) wherein an oxygen-containing heterocyclic ring formed by ring fusion of R 2 and R 3 of the above-mentioned compound (69) is a 3,6-dihydro-2H-pyran ring by using the known compound (96) as a starting compound.

Step 40A is a step for preparing Compound (97) by reacting the known compound (96) with cyclopropylmethyl bromide in an inert solvent in the presence of a base. This step is carried out in the same manner as in the above-mentioned “Step 32B” except for using Compound (96) in place of Compound (72), and using cyclopropylmethyl bromide in place of the halogen compound (73). In this case, it is particularly preferred that N,N-dimethylformamide is selected as an inert solvent, and potassium carbonate as a base, respectively, and amounts thereof are 1-fold mol amount based on 1 mol of Compound (96), a reaction temperature is 80° C., and a reaction time is 2 hours.

Step 40B is a step for preparing an iodized compound (98) after subjecting the bromine atom of Compound (97) to bromine atom-lithium metal exchange by using butyl lithium. This step is carried out in the same manner as in the above-mentioned “Preparation method 28” except for using Compound (97) in place of Compound (69), and using iodine in place of 2-isopropoxy-4,4,5,5-tetramethyl[1,3,2]dioxaborolane, respectively.

Step 40C is a step for preparing a phenol compound (99) by removing a MOM group which is a protective group of Compound (98). This step is carried out in the same manner as in the above-mentioned “Step 33B” except for using Compound (98) in place of Compound (77).

Step 40D is a step for preparing a brominated compound (100) by reacting Compound (99) with bromine. This step is carried out in the same manner as in the above-mentioned “Step 32A” except for using Compound (99) in place of Compound (71).

Step 40E is a step for preparing Compound (101) by reacting Compound (100) with a halogen compound (73). This step is carried out in the same manner as in the above-mentioned “Step 32B” except for using Compound (100) in place of Compound (72).

Step 40F is a step for preparing Compound (102) by removing a cyclopropylmethyl group which is a protective group of Compound (101). This step is carried out in the same manner as in the above-mentioned “Step 33B” except for using Compound (101) in place of Compound (77).

Step 40G is a step for preparing Compound (69d) by reacting Compound (102) with Compound (103) in the presence of a palladium catalyst. As Compound (103), there may be mentioned, for example, known compounds such as 3-buten-2-ol, 2-methyl-3-buten-2-ol, 1-cyclopropyl-2-propen-1-ol, 1-vinylcyclopropanol, 1-vinylcyclobutanol and 1-vinylcyclopentanol, etc. This step is carried out in the same method as described in WO 01/83476.

[Preparation Method 41]

wherein R 1 , R 2 and R 3 have the same meanings as defined above.

Preparation method 41 is a method for preparing Compound (7) in the above-mentioned “Preparation method 3”.

Step 41 is a step for preparing Compound (7) to which a carboxy group is introduced by reacting a lithiated compound (70) with carbon dioxide. Compound (70) can be prepared by the above-mentioned “Step 28A”. This step is carried out in the same manner as in the above-mentioned “Step 28B” except for using carbon dioxide in place of 2-isopropoxy-4,4,5,5-tetramethyl[1,3,2]dioxaborolane.

[Preparation Method 42]

wherein R 1 , R 2 , R 3 , R 4′ and M have the same meanings as defined above.

Preparation method 42 is another method for preparing Compound (10) of the above-mentioned “Preparation method 3”.

Step 42 is a step for preparing Compound (10) by reacting a benzoic acid compound (7) with an organometallic compound (9) in an inert solvent. Compound (7) can be prepared by, for example, the above-mentioned “Preparation method 41”; This step is carried out in the same manner as in the above-mentioned “Step 3B” except for using Compound (7) in place of Compound (8).

[Preparation Method 43]

wherein R 7 , X and M have the same meanings as defined above, R 20 represents a BOM group, 4-methoxybenzyl group or SEM group, R 21 represents a hydrogen atom, BOM group or SEM group, and R 22 represents a C 1 -C 6 alkyl group, “a C 3 -C 6 cycloalkyl group which may be substituted by a substituent(s) selected from Substituent group (b)” or “an aromatic ring group or heteroaromatic ring group each may be substituted by a substituent(s) selected from Substituent group (d)”. (the C 1 -C 6 alkyl group of R 22 has the same meaning as the unsubstituted C 1 -C 6 alkyl group in the “C 1 -C 6 alkyl group substituted by a substituent(s) selected from Substituent group (a)”.)

Preparation method 43 is a method for preparing Compound (111) wherein R 5 and R 6 of the above-mentioned compound (3) are each a SEM group or BOM group, and R 4 is an ethyl group substituted by R 22 , or R 5 of the above-mentioned compound (3a) is a SEM group or BOM group, and R 4 is an ethyl group substituted by R 22 .

Step 43A is a step for preparing a vinyl ether compound (106) by reacting Compound (104) with Compound (105) in an inert gas atmosphere in an inert solvent and in the presence of a palladium catalyst and a base. Compound (104) is a compound wherein R 5 and R 6 of the above-mentioned compound (41a) are each a SEM group, 4-methoxybenzyl group or BOM group, and X is a bromine atom, or a compound wherein R 5 of the above-mentioned compound (41b) is a SEM group, 4-methoxybenzyl group or BOM group, and X is a bromine atom, and can be prepared by the above-mentioned “Step 14I” or “Step 14K”. Compound (105) is a compound which is a known compound such as methylvinyl ether, ethylvinyl ether, propylvinyl ether, butylvinyl ether and tert-butylvinyl ether, etc., or can be prepared from a known compound according to the known method. This step is carried out in the same manner as in the above-mentioned “Step 11A1” except for using Compound (104) in place of Compound (6f) and using Compound (105) in place of Compound (24), respectively, using 1,3-bis(diphenylphosphino)propane in place of triphenylphosphine or tri(o-tolyl)phosphine as a phosphine derivative which is preferably co-present, using N,N-diisopropylethylamine as a preferred base, and using thallium acetate to control selectivity of the reaction. An amount of the thallium acetate to be used to control selectivity of the reaction is generally 0.5 to 3-fold mol amount, preferably 1 to 1.5-fold mol amount based on Compound (104).

Step 43B is a step for preparing Compound (107) having an acetyl group by hydrolyzing a vinyl ether compound (106) in an inert solvent in the presence of an acid catalyst.

As the inert solvent to be used, there may be mentioned, for example, an aliphatic hydrocarbon such as pentane, hexane or heptane, etc.; an aromatic hydrocarbon such as benzene or toluene, etc.; an ether such as tetrahydrofuran, 1,2-dimethoxyethane or 1,4-dioxane, etc.; an alcohol such as methanol, ethanol, propanol or isopropanol, etc.; an ester such as methyl acetate or ethyl acetate, etc.; an amide such as N,N-dimethylformamide, N,N-dimethylacetamide or N-methylpyrrolidone, etc.; a sulfoxide such as dimethylsulfoxide, etc.; a nitrile such as acetonitrile or propionitrile, etc.; water; or a mixed solvent of an optional combination of the above, etc., preferably a mixed solvent of hexane-ethyl acetate or methanol.

As the acid catalyst to be used, there may be mentioned a solid acid such as silica gel, etc.; an ion exchange resin such as Amberlite 15 (trade name), etc.; an inorganic acid such as hydrochloric acid, hydrobromic acid, sulfuric acid or phosphoric acid, etc.; an organic acid such as formic acid, acetic acid, propionic acid or trifluoroacetic acid, etc.; or a sulfonic acid such as methanesulfonic acid or p-toluenesulfonic acid, etc., preferably silica gel or hydrochloric acid. An amount of the acid catalyst to be used is generally 0.5 to 3-fold mol amount, preferably 1 to 1.5-fold mol amount based on 1 mol of Compound (106). Provided that in the case of the solid acid, it is generally 1 to 20 kg, preferably 5 to 15 kg based on 1 mol of Compound (106).

A reaction temperature may vary depending on a kind, an amount to be used of starting materials, solvent(s), etc., and is generally in the range of 0° C. to 200° C., preferably 10° C. to 50° C.

A reaction time may vary depending on a reaction temperature, etc., and is generally for 10 minutes to 72 hours, preferably 1 hour to 24 hours.

Step 43C is a step for preparing Compound (109) having a hydroxy group by reacting Compound (107) having an acetyl group with an organometallic compound (108) in an inert solvent. As the organometallic compound (108) to be used, there may be mentioned, for example, an organolithium reagent such as methyl lithium, butyl lithium or phenyl lithium, etc.; or an organomagnesium reagent (Grignard reagent) such as methyl magnesium chloride, methyl magnesium bromide, ethyl magnesium chloride, ethyl magnesium bromide, propyl magnesium chloride, propyl magnesium bromide, butyl magnesium chloride, butyl magnesium bromide, cyclopropyl magnesium chloride, cyclopropyl magnesium bromide, phenyl magnesium chloride or phenyl magnesium bromide, etc. Step 43C is carried out in the same manner as in the above-mentioned “Step 3B” except for using Compound (107) in place of Compound (8), and using an organometallic compound (108) in place of the organometallic compound (9), respectively.

Step 43D is a step for preparing Compound (110) by reducing Compound (109) having a hydroxy group using an organosilane compound or organotin compound in an inert solvent in the presence of an acid or a Lewis acid. Step 43D is carried out in the same manner as in the above-mentioned “Step 12C1” except for using Compound (109) in place of Compound (6q).

Step 43E is a step for preparing Compound (111) wherein the 2-position of the pyrrolopyridazinone ring is halogenated by reacting Compound (110) with a halogenating agent (21). This step is carried out in the same manner as in the above-mentioned “Step 6A” except for using Compound (110) in place of Compound (2e).

[Preparation Method 44]

wherein R 7 , R 20 and R 21 have the same meanings as defined above, R 23 represents a C 1 -C 4 alkyl group having the same meaning as defined above or a (C 3 -C 6 cycloalkyl)C 1 -C 2 alkyl group having the same meaning as defined above, X represents a chlorine atom or bromine atom.

Preparation method 44 is a method for preparing Compound (119) wherein R 4 of the above-mentioned compound (3) is an ethyl group substituted by a group-OR 23 .

Step 44A is a step for preparing a haloacetyl derivative (112) by reacting Compound (106) with a halogenating agent in an inert solvent.

Compound (106) can be prepared by the above-mentioned “Step 43A”.

As the inert solvent to be used, it is not specifically limited so long as it does not inhibit the reaction and dissolves the starting materials with a certain extent, and there may be mentioned, for example, an aromatic hydrocarbon such as benzene or toluene, etc.; an ether such as diethyl ether, tetrahydrofuran, 1,2-dimethoxyethane or 1,4-dioxane, etc.; an alcohol such as methanol, ethanol, propanol or isopropanol, etc.; a nitrile such as acetonitrile or propionitrile, etc.; a halogenated aliphatic hydrocarbon such as dichloromethane, chloroform or 1,2-dichloroethane, etc.; water and a mixed solvent of the above with water, or a mixed solvent of an optional combination of the above, etc., preferably a mixed solvent of tetrahydrofuran-water.

As the halogenating agent to be used, there may be mentioned, for example, a chlorinating agent such as chlorine, sulfuryl chloride or N-chlorosuccineimide, etc.; a brominating agent such as bromine, benzyltrimethylammonium tribromide, trimethylphenylammonium tribromide, tetramethylammonium tribromide, tetraethylammonium tribromide, tetrabutylammonium tribromide, pyridinium hydrobromide perbromide or N-bromosuccineimide, etc., and the like, preferably N-chlorosuccineimide or N-bromosuccineimide. An amount of the halogenating agent to be used is generally 1 to 10-fold mol amount, preferably 1 to 3-fold mol amount based on 1 mol of Compound (106).

A reaction temperature may vary depending on a kind, an amount to be used of starting materials, solvent(s), etc., and is generally in the range of −10° C. to 100° C., preferably 0° C. to 50° C.

A reaction time may vary depending on a reaction temperature, etc., and is generally for 10 minutes to 48 hours, preferably 1 hour to 24 hours.

Step 44B is a step for preparing a halohydrin compound (113) by treating a haloacetyl derivative (112) with a reducing agent in an inert solvent.

As the reducing agent to be used, there may be mentioned, for example, sodium borohydride, lithium borohydride, sodium cyanoborohydride, sodium trimethoxyborohydride and lithium aluminum hydride, etc., preferably sodium borohydride. An amount of the reducing agent to be used is generally 1 to 5-fold mol amount, preferably 1 to 2.5-fold mol amount based on 1 mol of Compound (112).

The solvent to be used may be mentioned, for example, an alcohol such as methanol, ethanol, propanol or butanol, etc.; an ether such as tetrahydrofuran, 1,4-dioxane or 1,2-dimethoxyethane, etc.; a nitrile such as acetonitrile or propionitrile, etc.; an amide such as N,N-dimethylformamide, N,N-dimethylacetamide or N-methylpyrrolidone, etc.; water or a mixed solvent of the above solvents, preferably tetrahydrofuran or a mixed solvent with tetrahydrofuran.

A reaction temperature may vary depending on a kind, an amount to be used of starting materials, solvent(s), etc., and is generally in the range of −10° C. to 100° C., preferably 0° C. to 50° C.

A reaction time may vary depending on a reaction temperature, etc., and is generally for 10 minutes to 10 hours, preferably 30 minutes to 6 hours.

Step 44C is a step for preparing an epoxide derivative (114) by treating a halohydrin compound (113) with a base in an inert solvent.

As the inert solvent to be used, it is not specifically limited so long as it does not inhibit the reaction and dissolves the starting materials with a certain extent, and there may be mentioned, for example, an ether such as diethyl ether, tetrahydrofuran, 1,2-dimethoxyethane or 1,4-dioxane, etc.; an amide such as N,N-dimethylformamide, N,N-dimethylacetamide or N-methylpyrrolidone, etc.; or a mixed solvent of the above solvents, etc., preferably tetrahydrofuran.

As the base to be used, there may be mentioned an alkali metal such as lithium, sodium or potassium, etc.; an alkali metal hydride such as sodium hydride or potassium hydride, etc.; or an alkali metal alkoxide such as sodium methoxide, sodium ethoxide, sodium butoxide, sodium tert-butoxide or potassium tert-butoxide, etc., and the like, preferably potassium tert-butoxide. An amount of the base to be used is generally 1 to 5-fold mol amount, preferably 1 to 2-fold mol amount based on 1 mol of Compound (113).

A reaction temperature may vary depending on a kind, an amount to be used of starting materials, solvent(s), etc., and is generally in the range of −10° C. to 100° C., preferably 0° C. to 60° C.

A reaction time may vary depending on a reaction temperature, etc., and is generally for 10 minutes to 24 hours, preferably 1 hour to 12 hours.

Step 44D is a step for preparing Compound (115) by treating an epoxide derivative (114) with methanol.

A reaction temperature may vary depending on a kind, an amount to be used of starting materials, solvent(s), etc., and is generally in the range of −10° C. to 100° C., preferably 0° C. to 60° C.

A reaction time may vary depending on a reaction temperature, etc., and is generally for 10 minutes to 48 hours, preferably 1 hour to 24 hours.

Step 44E is a step for preparing Compound (116) by reducing Compound (115) under hydrogen atmosphere using a catalyst in an inert solvent.

As the inert solvent to be used, it is not specifically limited so long as it does not inhibit the reaction and dissolves the starting materials with a certain extent, and there may be mentioned, for example, an alcohol such as methanol, ethanol, propanol or isopropanol, etc.; an ether such as tetrahydrofuran, 1,4-dioxane or 1,2-dimethoxyethane, etc.; a halogenated aliphatic hydrocarbon such as dichloromethane, chloroform or 1,2-dichloroethane, etc.; an ester such as methyl formate, ethyl formate, methyl acetate or ethyl acetate, etc.; an organic acid such as formic acid, acetic acid, propionic acid or trifluoroacetic acid, etc.; an aromatic hydrocarbon such as benzene or toluene, etc.; water; or a mixed solvent of an optional combination of the above, etc., preferably acetic acid.

The catalyst to be used may be mentioned, for example, palladium-active carbon, platinum-active carbon, platinum black, rhodium-active carbon or Raney nickel, etc., preferably palladium-active carbon. An amount of the catalyst to be used is generally 0.0005 to 1-fold mol amount, preferably 0.01 to 0.1-fold mol amount based on 1 mol of Compound (115).

A hydrogen partial pressure in the reaction is generally 1 atm to 10 atm, preferably 1 atm to 5 atm.

A reaction temperature may vary depending on a kind, an amount to be used of starting materials, solvent(s), etc., and is generally in the range of 0° C. to 100° C., preferably 15° C. to 80° C.

A reaction time may vary depending on a reaction temperature, etc., and is generally for 15 minutes to 24 hours, preferably 30 minutes to 12 hours.

Step 44F is a step for preparing an alkoxyethyl derivative (118) by reacting Compound (116) with an alkylating agent (117) in an organic solvent in the presence of a base.

As the inert solvent to be used, it is not specifically limited so long as it does not inhibit the reaction and dissolves the starting materials with a certain extent, and there may be mentioned, for example, an aprotic polar solvent such as N,N-dimethylformamide, N-methylpyrrolidone, dimethylsulfoxide, N,N-dimethylacetamide or hexamethylphosphoric triamide, etc.; a halogenated hydrocarbon such as dichloromethane, chloroform or 1,2-dichloroethane, etc.; a ketone such as acetone, methyl ethyl ketone or methyl isobutyl ketone, etc.; a nitrile such as acetonitrile or propionitrile, etc.; an ester such as methyl formate, ethyl formate, methyl acetate or ethyl acetate, etc.; an ether such as diethyl ether, diisopropyl ether, tetrahydrofuran or 1,4-dioxane, etc.; or a mixed solvent of the above solvents, preferably an aprotic polar solvent, an ether or a mixed solvent thereof.

As the base to be used, there may be mentioned, for example, an alkali metal hydroxide such as sodium hydroxide or lithium hydroxide, etc.; an alkali metal hydride such as sodium hydride, etc.; an alkali metal amide such as sodium amide, etc.; an amine such as triethylamine, tributylamine, N,N-diisopropylethylamine, pyridine, picoline, lutidine or 4-dimethylaminopyridine, etc.; an alkali metal carbonate such as sodium carbonate, potassium carbonate or sodium hydrogencarbonate, etc.; or an alkali metal alkoxide such as sodium methoxide, sodium ethoxide, sodium butoxide, sodium tert-butoxide or potassium tert-butoxide, etc., and the like, preferably sodium tert-butoxide or potassium tert-butoxide. An amount of the base to be used is generally 1 to 10-fold mol amount, preferably 1 to 3-fold mol amount based on 1 mol of Compound (116).

Compound (117) is a compound which is conventionally known, or can be prepared from a conventionally known compound by a conventionally known method. An amount of Compound (117) to be used is generally 1 to 10-fold mol amount, preferably 1 to 5-fold mol amount based on 1 mol of Compound (116).

A reaction temperature may vary depending on a kind, an amount to be used of starting materials, solvent(s), etc., and is generally in the range of −50° C. to 150° C., preferably −10° C. to 100° C.

A reaction time may vary depending on a reaction temperature, etc., and is generally for 5 minutes to 10 hours, preferably 30 minutes to 5 hours.

Step 44G is a step for preparing a halogen compound (119) by reacting Compound (118) with a halogenating agent (21). This step is carried out in the same manner as in the above-mentioned “Step 6A” except for using Compound (118) in place of Compound (2e).

[Preparation Method 45]

wherein R 1 , R 2 , R 3 , R 5 , R 6 , R 10 and X have the same meanings as defined above.

Preparation method 45 is a method for preparing Compound (2n) wherein R 4 of the above-mentioned compound (3) is an ethyl group substituted by R 10 .

Step 45A is a step for preparing an olefin compound (121) by reacting Compound (26b) with Compound (120) in an inert solvent in the presence of a base. This step is a reaction which has been known as the so-called Wittig Reaction, and can be carried out by optionally selecting known conditions.

Compound (26b) can be prepared by the above-mentioned “Step 12A2”.

As the inert solvent to be used, it is not specifically limited so long as it does not inhibit the reaction and dissolves the starting materials with a certain extent, and there may be mentioned, for example, a halogenated hydrocarbon such as dichloromethane, chloroform, 1,2-dichloroethane, etc.; an ether such as diethyl ether, tetrahydrofuran, 1,4-dioxane, 1,2-dimethoxyethane, etc.; an aromatic hydrocarbon such as benzene, toluene, xylene, etc.; an ester such as methyl acetate, ethyl acetate, etc.; a nitrile such as acetonitrile or propionitrile, etc.; an amide such as N,N-dimethylformamide, N,N-dimethylacetamide, N-methylpyrrolidone, etc.; dimethylsulfoxide; or a mixed solvent of the above.

The base to be used may be mentioned, for example, an alkali metal hydroxide such as lithium hydroxide, sodium hydroxide, potassium hydroxide, etc.; an alkali metal carbonate such as sodium carbonate, potassium carbonate, etc.; an alkali metal alkoxide such as sodium methoxide, sodium ethoxide, sodium tert-butoxide, potassium tert-butoxide, etc.; an alkali metal hydride such as sodium hydride, potassium hydride, etc.; an alkyl lithium such as methyl lithium, butyl lithium, etc.; a metal amide such as sodium amide, lithium diisopropyl amide, etc.; or an organic amine such as triethylamine, N,N-diisopropylethylamine, tripropylamine, 1,5-diazabicyclo[4.3.0]-5-nonene, etc. An amount of the base to be used is generally 1 to 5-fold mol amount, preferably 1 to 2-fold mol amount based on 1 mol of Compound (26b).

Compound (120) is a compound which is conventionally known, or can be prepared from a conventionally known compound by a conventionally known method. An amount of Compound (120) to be used is generally 1 to 10-fold mol amount, preferably 1 to 1.5-fold mol amount based on 1 mol of Compound (26b).

A reaction temperature may vary depending on a kind, an amount to be used of starting materials, solvent(s), etc., and is generally in the range of 0° C. to 150° C., preferably 15 to 80° C.

A reaction time may vary depending on a reaction temperature, etc., and is generally for 1 hour to 24 hours, preferably 1 hour to 6 hours.

Step 45B is a step for preparing Compound (2n) wherein R 4 of Compound (2) is an ethyl group substituted by R 10 group by subjecting Compound (121) to hydrogenation reduction in the presence of a catalyst. Step 45B is carried out in the same manner as in the above-mentioned “Step 9C1” except for using Compound (121) in place of Compound (6k).

[Preparation Method 46]

wherein R 1 , R 2 and R 3 have the same meanings as defined above, R 24 represents a C 2 -C 6 alkynyl group having the same meaning as defined above, and R 25 represents a C 2 -C 6 alkenyl group having the same meaning as defined above.

Preparation method 46 is a step for preparing Compound (123) wherein R 4 of the above-mentioned compound (1) is a C 2 -C 6 alkenyl group by subjecting Compound (122) wherein R 4 is a C 2 -C 6 alkynyl group to hydrogenation reduction in the presence of a catalyst. This step is carried out in the same manner as in the above-mentioned “Step 9B1” except for using Compound (122) in place of Compound (6j).

[Preparation Method 47]

wherein R 1 , R 2 , R 3 , R 6 and R 13 have the same meanings as defined above.

Preparation method 47 is a method for preparing Compound (5a) wherein R 4 of Compound (5) described in the above-mentioned “Preparation method 1” is a group —CH(OH)R 13 , and Compound (5b) wherein R 4 of the same is a group —CH 2 R 13 .

Step 47A is a step for removing the SEM group as a protective group. Compound (2q′) is a compound wherein R 4 of Compound (2) is a group —CH(OH)R 13 and R 5 of the same is a SEM group, and can be prepared, for example, by the above-mentioned “Step 12B”. This step is carried out in the same manner as in the above-mentioned (Treatment 1) of “Step 1B11” except for using Compound (2q′) in place of Compound (2′).

Step 47B is a step for preparing Compound (5b) by reducing Compound (5a) having a hydroxy group using an organosilane compound or organotin compound in an inert solvent in the presence of an acid or a Lewis acid. This step is carried out in the same manner as in the above-mentioned “Step 12C1” except for using Compound (5a) in place of Compound (6q).

After completion of the above-mentioned respective reactions, the desired compound may be isolated from the reaction mixture according to the conventional manner. For example, it can be obtained by neutralizing the reaction mixture as needed, removing insoluble materials by filtration, if any one present, adding organic solvents which are not miscible with water such as ethyl acetate, washing with water, separating the organic layer containing the desired compound, drying it over anhydrous magnesium sulfate, etc., and then distillating off the solvent.

The obtained desired compound can be separated and purified, if necessary, by a conventional manner, for example, recrystallization; reprecipitation; or a method conventionally used for separation and purification of an organic compound in an optional combination by eluting with an appropriate eluent (for example, an adsorption column chromatography method using a carrier such as silica gel, alumina, etc.; ion exchange chromatography method; or a normal phase-reverse phase column chromatography method using silica gel or alkylated silica gel (suitably it is high performance liquid chromatography.)).

Compound (1) of the present invention can be converted into a pharmaceutically acceptable addition salt according to the conventional manner, if necessary, and it can be directly separated as an addition salt from the reaction mixture.

As the pharmaceutically acceptable addition salt, when Compound (1) of the present invention has a substituted amino group, there may be mentioned, for example, an inorganic acid addition salt such as hydrochloride, hydrobromide, hydroiodide, nitrate, sulfate or phosphate, etc.; or an organic acid addition salt such as acetate, benzoate, oxalate, malonate, succinate, maleate, fumarate, tartarate, citrate, methanesulfonate, ethanesulfonate, trifluoromethanesulfonate, benzenesulfonate, p-toluenesulfonate, glutamate or aspartate, etc. Also, when Compound (1) of the present invention has a carboxy group, there may be mentioned, for example, a metal salt such as a sodium salt, potassium salt, calcium salt or magnesium salt, etc.: or a salt with an organic base such as an ammonium salt, triethylamine salt or guanidine salt, etc., and the like.

When Compound (1) of the present invention or an addition salt thereof is used as a medicine, it can be administered as such (as a resulting powder as such), or as a preparation such as a tablet, capsule, granule, powder or syrup, etc., which are prepared by mixing with an optional pharmaceutically acceptable excipient, diluent, etc., orally, or non-orally (preferably orally) as a preparation such as an injection or suppository, etc., prepared in the same manner.

These preparations are prepared by the conventionally known method by using an additive such as an excipient, a lubricant, a binder, a disintegrator, an emulsifier, a stabilizer, a corrigent or a diluent, etc.

The excipient may be mentioned, for example, an organic excipient or an inorganic excipient. The organic excipient may be mentioned, for example, a sugar derivative such as lactose, sucrose, glucose, mannitol or sorbitol, etc.; a starch derivative such as corn starch, potato starch, α-starch or dextrin, etc.; a cellulose derivative such as crystalline cellulose, etc.; Gum Arabic; dextran; or pullulan, etc. The inorganic excipient may be mentioned, for example, light silicic acid anhydride; or a sulfate such as calcium sulfate, etc., and the like.

The lubricant may be mentioned, for example, stearic acid; a stearic acid metal salt such as calcium stearate or magnesium stearate, etc.; talc; colloidal silica; a wax such as beeds wax or spermaceti, etc.; boric acid; adipic acid; a sulfate such as sodium sulfate, etc.; glycol; fumaric acid; sodium benzoate; D,L-leucine; sodium lauryl sulfate; a silicic acid such as silicic anhydride or silicic acid hydrate, etc.; or the starch derivative in the above-mentioned excipient, etc.

The binder may be mentioned, for example, hydroxypropyl cellulose, hydroxypropylmethyl cellulose, polyvinylpyrrolidone, Macrogol or compounds shown in the above-mentioned excipient, etc.

The disintegrator may be mentioned, for example, a cellulose derivative such as low-substitution degree hydroxypropyl cellulose, carboxymethyl cellulose, calcium carboxymethyl cellulose or internally cross-linked calcium carboxymethyl cellulose, etc.; cross-linked polyvinylpyrrolidone; or chemically-modified starch or cellulose derivatives such as carboxymethyl starch or sodium carboxymethyl starch, etc.

The emulsifier may be mentioned, for example, a colloidal clay such as bentonite or bee gum, etc.; an anionic surfactant such as sodium lauryl sulfate, etc.; a cationic surfactant such as benzalkonium hydrochloride, etc.; or a nonionic surfactant such as polyoxyethylene alkyl ether, polyoxyethylene sorbitan aliphatic acid ester or sucrose aliphatic acid ester, etc., and the like.

The stabilizer may be mentioned, for example, a parahydroxybenzoic acid ester such as methylparaben or propylparaben, etc.; an alcohol such as chlorobutanol, benzylalcohol or phenylethylalcohol, etc.; benzalkonium hydrochloride; a phenol such as phenol or cresol, etc.; thimerosal; acetic anhydride; or sorbic acid.

The corrigent may be mentioned, for example, a sweetening agent such as sodium saccharin or Aspartame, etc.; a souring agent such as citric acid, malic acid or tartaric acid, etc.; or a flavoring agent such as menthol, lemon extract or orange extract, etc., and the like.

The diluent is a compound which is usually used as a diluent, and there may be mentioned, for example, lactose, mannitol, glucose, sucrose, calcium sulfate, hydroxypropyl cellulose, microcrystalline cellulose, water, ethanol, polyethylene glycol, propylene glycol, glycerol, starch, polyvinylpyrrolidone or a mixture thereof, etc.

A dose of the desired Compound (1) or an addition salt thereof of the present invention may vary depending on symptom, an age, a body weight, etc., of a patient, and in the case of an oral administration, each can be administered in a lower limit of 0.005 mg/Kg (preferably 0.02 mg/Kg) and an upper limit of 20 mg/Kg (preferably 10 mg/Kg) per one time, and in the case of a non-oral administration, each can be administered in a lower limit of 0.0005 mg/Kg (preferably 0.002 mg/Kg) and an upper limit of 20 mg/Kg (preferably 10 mg/Kg), with 1 to 6 times per day per an adult depending on symptom.

In the following, the present invention is explained in more detail by referring to Examples, Reference examples and Test examples, but the scope of the present invention is not limited by these.