发明申请
- 专利标题: Process for the Preparation of Biphosphonic Acids and Salts Thereof
- 专利标题(中): 制备双膦酸及其盐的方法
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申请号: US12513740申请日: 2007-11-06
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公开(公告)号: US20090326227A1公开(公告)日: 2009-12-31
- 发明人: Joana Baptista , Zita Mendes
- 申请人: Joana Baptista , Zita Mendes
- 申请人地址: CH Lucerne 7
- 专利权人: HOVIONE INTER LIMITED
- 当前专利权人: HOVIONE INTER LIMITED
- 当前专利权人地址: CH Lucerne 7
- 优先权: PT103600 20061106
- 国际申请: PCT/GB07/04229 WO 20071106
- 主分类号: C07F9/38
- IPC分类号: C07F9/38 ; C07F9/6506 ; C07F9/58
摘要:
A process for the preparation of biphosphonic acids and pharmaceutical acceptable salts thereof, comprises reacting a carboxylic acid with phosphorous trichloride and phosphorous acid in the presence of an aprotic polar solvent. Formula (I):
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