AN IMPROVED PROCESS FOR THE PREPARATION OF RIFAMYCIN DERIVATIVES

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专利权人:

Granules India Limited

发明人:

VETUKURI VNKV, Prasada Raju,GILLA, Goverdhan,BOINI, Ambaiah,CHIGURUPATI, Krishna Prasad

申请号：

EP15780496

公开号：

EP3134415A4

申请日:

2015.04.19

申请国别(地区):

EP

年份:

2017

代理人:

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.

来源网站：

中国工程科技知识中心

来源网址：

http://www.ckcest.cn/home/