发明授权
US5919931A Process for the manufacture of intermediates suitable to make doxazosin,
terazosin, prazosin, tiodazosin and related antihypertensive medicines
失效
制造适合制造多沙唑嗪,特拉唑嗪,哌唑嗪,替沙星和相关抗高血压药物的中间体的方法
- 专利标题: Process for the manufacture of intermediates suitable to make doxazosin, terazosin, prazosin, tiodazosin and related antihypertensive medicines
- 专利标题(中): 制造适合制造多沙唑嗪,特拉唑嗪,哌唑嗪,替沙星和相关抗高血压药物的中间体的方法
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申请号: US627454申请日: 1996-04-04
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公开(公告)号: US5919931A公开(公告)日: 1999-07-06
- 发明人: K. S. Keshava Murthy , Gamini Weeratunga , Tianhao Zhou , Bhaskar Reddy Guntoori
- 申请人: K. S. Keshava Murthy , Gamini Weeratunga , Tianhao Zhou , Bhaskar Reddy Guntoori
- 申请人地址: CAX Brantford
- 专利权人: Brantford Chemicals Inc.
- 当前专利权人: Brantford Chemicals Inc.
- 当前专利权人地址: CAX Brantford
- 主分类号: C07D307/24
- IPC分类号: C07D307/24 ; C07D307/68 ; C07D319/20 ; C07D405/06 ; C07D413/06
摘要:
A process is provided for the manufacture of: where R is: ##STR1## comprising reacting: ##STR2## wherein R.sub.1 may be selected from H, Methyl, Ethyl and suitable lower alkyl groups, C.sub.n H.sub.2n+1 (where n is from 3 to 5) or any other suitable group and thereafter if desired converting the resultant product to a salt thereof.
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