申请人:Kissei Pharmaceutical Co., Ltd.
公开号:EP1978016A1
公开(公告)日:2008-10-08
The present invention is to provide a novel method for producing (2S)-2-benzyl-3-(cis-hexahydro-2-isoindolinylcar bonyl)propionic acid which is useful as a therapeutic agent for diabetes. The present invention relates to a method for producing (2S)-2-benzyl-3-(cis-hexahydro-2-isoindolinylcarb onyl)propionic acid, which is characterized in that 2-benzylidene-3-(cis-hexahydro-2-isoindolinylcarbonyl)propi onic acid is subjected to a catalytic reduction reaction in the presence of an asymmetric catalyst prepared from a pyrrolidinebisphosphine compound (I) represented by the following general formula (I):
wherein, R1 represents a linear or branched alkyl group having 1-10 carbon atoms, cycloalkyl group, aralkyl group or aryl group which may respectively have a substituent; and R2 and R3 independently represent an optionally substituted aryl group. The * mark in the pyrrolidine ring shows that the carbon atom at that position has the S configuration, and a rhodium compound.
本发明旨在提供一种生产(2S)-2-苄基-3-(顺式六氢-2-异吲哚啉基羰基)丙酸的新方法,该方法可用作糖尿病的治疗剂。本发明涉及一种生产(2S)-2-苄基-3-(顺式-六氢-2-异吲哚啉基羰基)丙酸的方法,其特征在于 2-亚苄基-3-(顺式-六氢-2-异吲哚啉基羰基)丙酸在由吡咯烷二膦化合物(I)制备的不对称催化剂存在下进行催化还原反应,吡咯烷二膦化合物(I)由以下通式(I)表示:
其中,R1 代表具有 1-10 个碳原子的直链或支链烷基、环烷基、芳烷基或芳基,可分别具有一个取代基;R2 和 R3 独立地代表任选取代的芳基。吡咯烷环中的 * 号表示该位置的碳原子具有 S 构型,是一种铑化合物。