Invention Grant
- Patent Title: Process for the preparation of telmisartan
- Patent Title (中): 制备替米沙坦的方法
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Application No.: US11568898Application Date: 2005-05-10
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Publication No.: US08691999B2Publication Date: 2014-04-08
- Inventor: Rajendra Narayanrao Kankan , Dharmaraj Ramachandra Rao , Srinivas Laxminarayan Pathi , Ravikumar Puppala
- Applicant: Rajendra Narayanrao Kankan , Dharmaraj Ramachandra Rao , Srinivas Laxminarayan Pathi , Ravikumar Puppala
- Applicant Address: IN Mumbai
- Assignee: Cipla Limited
- Current Assignee: Cipla Limited
- Current Assignee Address: IN Mumbai
- Agency: Conley Rose, P.C.
- Agent Rodney B. Carroll
- Priority: GB0410471.7 20040511
- International Application: PCT/GB2005/001799 WO 20050510
- International Announcement: WO2005/108375 WO 20051117
- Main IPC: C07D235/20
- IPC: C07D235/20 ; C07D235/06 ; C07D403/02
Abstract:
An improved process for the preparation of telmisartan, or a pharmaceutically acceptable salt thereof, comprises subjecting 1H-Benzimidazole-2-n-propyl-4-methyl-6-(1′-methyl benzimidazole-2′yl)] of formula (II), and methyl-4-(bromomethyl)biphenyl-2-carboxylate of formula (III) to condensation and hydrolysis in a single step:
Public/Granted literature
- US20080015359A1 Process for the Preparation of Telmisartan Public/Granted day:2008-01-17
Information query
