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Title:
METHOD FOR MANUFACTURING A 6-SUBSTITUTED-1-METHYL-1H-BENZIMIDAZOLE DERIVATIVE, AND MANUFACTURING INTERMEDIATE FROM SAID METHOD
Document Type and Number:
WIPO Patent Application WO/2011/065420
Kind Code:
A1
Abstract:
Provided is a novel method for manufacturing a 6-substituted-1-methyl-1H-benzimidazole derivative. Also provided is a manufacturing intermediate from said method. The provided method, which manufactures a 6-substituted-1-methyl-1H-benzimidazole derivative represented by general formula (IV) (in which R3 represents a hydrogen atom or a C1-4 alkyl group), is characterized by: manufacturing a 4-substituted-N2-methylbenzene-1,2-diamine derivative from a specific 5-substituted-N-methyl-2-nitroaniline derivative; reacting same with {4-[(2,4-dioxo-1,3-thiazolidine-5-yl)methyl]phenoxy} acetate or an oxychloride or mixed acid anhydride thereof; and then performing intramolecular dehydration/condensation.

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Inventors:
IKEUCHI YUTAKA
SATOH CHIHARU
NUMAGAMI EIJI
NIHEI SATORU
KAJINO HISAKI
Application Number:
PCT/JP2010/071014
Publication Date:
June 03, 2011
Filing Date:
November 25, 2010
Export Citation:
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Assignee:
DAIICHI SANKYO CO LTD (JP)
IKEUCHI YUTAKA
SATOH CHIHARU
NUMAGAMI EIJI
NIHEI SATORU
KAJINO HISAKI
International Classes:
C07D417/12; C07C213/02; C07C217/90; C07D277/20; C07D277/34; A61K31/427; A61P3/10; A61P29/00; A61P35/00; A61P43/00
Domestic Patent References:
WO2008126732A12008-10-23
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WO2006035685A12006-04-06
WO2006035685A12006-04-06
WO2008099944A12008-08-21
WO2007091622A12007-08-16
Foreign References:
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JPH11193276A1999-07-21
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Other References:
T.W. GREENE ET AL.: "Protective Groups in Organic Synthesis", JOHN WILLEY & SONS, INC
Attorney, Agent or Firm:
ISHIBASHI Koki et al. (JP)
Kimiki Ishibashi (JP)
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