CHARAN GANPAT DAN SHIMBHU,TANPURE ARUN ANKUSH,SINGH KUMAR KAMLESH LAXMI
申请号:
IN2665/MUM/2009
公开号:
IN2009MU02665A
申请日:
2009.11.18
申请国别(地区):
IN
年份:
2012
代理人:
摘要:
The present invention relates to process for the preparation of 7-ethyl-10-[4-(l-piperidino)-l-piperidino] carbonyloxy-camptothecin hydrochloride trihydrate and process for the isolation of l-chlorocarbonyl-4-piperidinopiperidine and novel crystalline form of 1-chlorocarbonyl-4-piperidinopiperidine and 7-ethyl-10-[4-(l-piperidino)-l-piperidino] carbonyloxy-camptothecin.