Title:
AN IMPROVED PROCESS FOR PREPARATION OF OLMESARTAN
Document Type and Number:
WIPO Patent Application WO/2011/007368
Kind Code:
A3
Abstract:
The invention relates to processes for the preparation of olmesartan medoxomil and intermediates thereof. More particularly, it relates to a process for the preparation of ethyl-4-(1-hydroxy-1-methylethyl)-2-propyl-1-[[2'-[2-(triphenylmethyl)-2H-tetrazol- 5yl]- biphenyl-4-yl]methyl]imidazole-5-carboxylate, and its use in the preparation of olmesartan medoxomil. The invention also relates to crystalline olmesartan medoximil and pharmaceutical compositions that include the crystalline olmesartan medoximil.
Inventors:
DWIVEDI SHRIPRAKASH DHAR (IN)
SHARMA PIYUSH RAJENDRA (IN)
SHARMA PIYUSH RAJENDRA (IN)
Application Number:
PCT/IN2010/000467
Publication Date:
July 21, 2011
Filing Date:
July 13, 2010
Export Citation:
Assignee:
CADILA HEALTHCARE LTD (IN)
DWIVEDI SHRIPRAKASH DHAR (IN)
SHARMA PIYUSH RAJENDRA (IN)
DWIVEDI SHRIPRAKASH DHAR (IN)
SHARMA PIYUSH RAJENDRA (IN)
International Classes:
C07D405/14
Domestic Patent References:
| WO2009019304A1 | 2009-02-12 | |||
| WO2008043996A2 | 2008-04-17 | |||
| WO2007148344A2 | 2007-12-27 | |||
| WO2008149155A1 | 2008-12-11 |
Attorney, Agent or Firm:
SUBRAMANIAM, Hariharan et al. (Nataraj & AssociatesE- 556, Greater Kailash-II, New Delhi 8, IN)
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