IMPROVED PROCESS FOR PREPARATION OF CARBAMIC ACID, N-[(1S, 2R)-3-[[(4-AMINOPHENYL) SULFONYL] (2-METHYLPROPYL) AMINO]-2-HYDROXY-1-(PHENYLMETHYL) PROPYL]-, (3R, 3AS, 6AR)-HEXAHYDROFURO [2, 3-B] FURAN-3-YL ESTER.

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专利权人:

发明人:

SCHREINER ERWIN

申请号：

IN1225/MUM/2011

公开号：

IN2011MU01225A

申请日:

2011.04.15

申请国别(地区):

IN

年份:

2012

代理人:

摘要：

The present invention relates to an improved process for the preparation of 4-amino-N-((2R, 3S)-3-amino-2-hydroxy-4- phenylbutyl) -N - isobutylbenzene sulfonamide, compound of formula (5) and its subsequent conversion into HIV protease inhibitors viz Darunavir or Amprenavir.

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