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 AND NOVEL INTERMEDIATE USE IN THE PREPARATION THEREOF.

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专利权人:

发明人:

SCHREINER ERWIN

申请号：

IN1227/MUM/2011

公开号：

IN2011MU01227A

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 a process for the preparation of Carbamic acid, N-[(1S,2R)-3-[[(4-aminophenyl)sulfonyl] (2-methylpropyl) amino]-2-hydroxy-l-(phenylmethyl)propyl]-, (3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yl ester. It further relates to a process for preparation of novel intermediate and their use in synthesis of darunavir.

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