发明申请
US20170037055A1 AN IMPROVED PROCESS FOR THE PREPARATION OF RIFAMYCIN DERIVATIVES
有权
改进RIFAMYCIN衍生物的制备方法
- 专利标题： AN IMPROVED PROCESS FOR THE PREPARATION OF RIFAMYCIN DERIVATIVES
- 专利标题（中）： 改进RIFAMYCIN衍生物的制备方法
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申请号： US15304740申请日： 2015-04-19
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公开(公告)号： US20170037055A1公开(公告)日： 2017-02-09
- 发明人: Prasada Raju Vetukuri Vnkv , Goverdhan Gilla , Ambaiah Boini , Krishna Prasad Chigurupati
- 申请人： Prasada Raju Vetukuri Vnkv , Goverdhan Gilla , Ambaiah Boini , Krishna Prasad Chigurupati , Grannules India Limited
- 优先权： IN2021/CHE/2014 20140419; IN6856/CHE/2014 20141231
- 国际申请： PCT/IB2015/052854 WO 20150419
- 主分类号： C07D498/22
- IPC分类号： C07D498/22
摘要：
The present invention relates to an improved and industrially advantageous process for the preparation of Rifaximin with high purity and yield. Particularly, the present invention relates to improved processes for the preparation of Rifaximin from Rifamycin O and S. More particularly the present invention relates to a process for the preparation of Rifaximin through 3-halorifamycin S. The present invention further relates to a novel polymorph of Rifaximin and process for its preparation.
公开/授权文献
- US09765088B2 Process for the preparation of rifamycin derivatives 公开/授权日：2017-09-19
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