AN IMPROVED PROCESS FOR THE PREPARATION OF RIFAMYCIN DERIVATIVES
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.
申请公布号
WO2015159275(A3)
申请公布日期
2015.12.23
申请号
WO2015IB52854
申请日期
2015.04.19
申请人
GRANULES INDIA LIMITED;VETUKURI VNKV, PRASADA RAJU;GILLA, GOVERDHAN;BOINI, AMBAIAH;CHIGURUPATI, KRISHNA PRASAD