USPatentGranted
B2

Inosine derivatives and production methods therefor

Granted 28 Aug 2012 · 4 office actions

Current assignee: Ajinomoto Co., Inc. · originally Ajinomoto Co. Inc.

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Inventors: Doo Ok Jang, Dae Hyan Cho, Kunisuke Izawa, Takayoshi Torii · Examiner: Shaojia Anna Jiang · AU 1623 · TC 1600

Life of the patent

3 dated events
⤢ drag to zoomJul 2010Oct 2010Jan 2011Apr 2011Jul 2011Oct 2011Jan 2012Apr 2012Jul 2012Oct 2012Prosecution
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Abstract

The present invention provides a method for producing an inosine derivative represented by the following general formula (1) including the steps of subjecting an inosine derivative of general formula (3) to dithiocarbonylation and carrying out radical reduction of the obtained compound. According to the present invention there can be produced compounds useful as anti-AIDS drugs on industrial scale. [structure] wherein R1 may be the same or different and are each benzyl group, benzhydryl group or trityl group, each of which may have a substituent in general formulas (1) and (3).

Claims

6 · 2 independent · depth 2
123456
6 granted claims

Classifications

8 codes
IPC · International Patent Classification
Section C — Chemistry; metallurgy
  • C07H19/16
  • C07H19/167
  • C07H19/173
USPC · US Patent Classification
536/27.8536/27.21544/265514/45536/27.1

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Pendency
2.1 y
760 days filing → grant
Office actions
2
non-final + final
Responses
3
no RCE
Examiner
Shaojia Anna Jiang
art unit 1623 · TC 1600
Citations: 12 back · 0 forward

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Priority chain

1 priority documents
›Priority documents — 1
TypeDocumentDate
related publicationUS 20110028706 A13 Feb 2011

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