PROCESS FOR THE PREPARATION OF (S)-2-AMINO-5-CYCLOPROPYL-4,4-DIFLUOROPENTANOIC ACID AND ALKYL ESTERS AND ACID SALTS THEREOF
申请人:Hart Barry
公开号:US20110046406A1
公开(公告)日:2011-02-24
The present invention relates to a process for the preparation of alkyl esters of (S)-2-amino-5-cyclopropyl-4,4-difluoropentanoic acid, which are intermediates useful in the synthesis of (S)-N-(1-cyanocyclopropyl)-5-cyclopropyl-4,4-difluoro-2-(S)-2,2,2-trifluoro-1-(4-fluorophenyl)ethylamino)pentanamide and related compounds, which are compounds that are cysteine protease inhibitors.
本发明涉及一种制备(S)-2-氨基-5-环丙基-4,4-二氟戊酸烷基酯的方法,该方法是合成(S)-N-(1-氰基环丙基)-5-环丙基-4,4-二氟-2-(S)-2,2,2-三氟-1-(4-氟苯基)乙基氨基戊酰胺及相关化合物的中间体,这些化合物是半胱氨酸蛋白酶抑制剂。