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公开(公告)号:US20110190502A1
公开(公告)日:2011-08-04
申请号:US13121769
申请日:2009-10-23
申请人: Shreerang Joshi , Sachin Bhuta , Raji Nair , Sanjukumar Salunke
发明人: Shreerang Joshi , Sachin Bhuta , Raji Nair , Sanjukumar Salunke
IPC分类号: C07D471/04
CPC分类号: C07D495/04
摘要: A process for the preparation of (S)-Clopidogrel free base or a pharmaceutically acceptable salt thereof by the racemization of the undesired (R)-Clopidogrel in the presence of a suitable base followed by resolution with camphor sulfonate salt and further treatment with an inorganic acid to yield the title compound.
摘要翻译: 通过在合适的碱存在下不需要的(R) - 氯吡格雷的外消旋化制备(S) - 氯吡格雷游离碱或其药学上可接受的盐的方法,随后用樟脑磺酸盐分解并进一步用无机物 酸,得到标题化合物。
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公开(公告)号:US20070027202A1
公开(公告)日:2007-02-01
申请号:US11480526
申请日:2006-07-05
申请人: Ashok Kumar , Ashvini Saxena , Anindya Battacharyya , Amit Sengar , Gunjan Pathak , Satish Soudagar , Pramil Mathur , Avinash Nijasure , Sanjukumar Salunke , Prashant Gautam , Thakur Ramsingh , Dilip Jadhav
发明人: Ashok Kumar , Ashvini Saxena , Anindya Battacharyya , Amit Sengar , Gunjan Pathak , Satish Soudagar , Pramil Mathur , Avinash Nijasure , Sanjukumar Salunke , Prashant Gautam , Thakur Ramsingh , Dilip Jadhav
IPC分类号: C07D209/82 , A61K31/403
CPC分类号: C07D209/88
摘要: Disclosed herein is a process for preparation of carvedilol substantially free from its bis-impurity comprises the reaction of 4-(2,3-epoxypropoxy)carbazole and 2-(2-methoxyphenoxy)ethylamine in a polar aprotic solvent media; followed by isolation of carvediol from the reaction mass as an acid addition salt and subsequent conversion into pure carvedilol.
摘要翻译: 本文公开了一种制备基本上不含其双杂质的卡维地洛的方法,包括4-(2,3-环氧丙氧基)咔唑和2-(2-甲氧基苯氧基)乙胺在极性非质子溶剂介质中的反应; 然后将其作为酸加成盐从反应物料中分离出来,随后转化为纯的卡维地洛。
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