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A NOVEL PROCESS FOR MIDODRINE
专利权人:
发明人:
GURJAR MUKUND KESHAV,SONAWANE SWAPNIL PANDITRAO,PATIL GULABRAO DAGDU,PATIL PANKAJ SHALIKRAO,MEHTA SAMIT SATISH
申请号:
IN2844/MUM/2014
公开号:
IN2014MU02844A
申请日:
2014.09.05
申请国别(地区):
IN
年份:
2016
代理人:
摘要:
The present invention provides an improved process for preparation of midodrine hydrochloride (la). The process comprises reaction of 2-amino-l(2,5-dimethoxyphenyl)-ethanone hydrochloride of formula (Va) with N-BOC-glycine and 1,1carbonyldiimidazole (CDI) to give novel intermediate, tertiary-butyl-N-({[2-(2,5-dimethoxyphenyl)-2-ketoethyl]-carbamoyl} methyl) carbamate of formula (VI), which after reduction with sodium borohydride and treatment of the resulting compound (VII) with hydrochloric acid afforded midodrine hydrochloride (I) conforming to regulatory specifications.
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