The present invention is to provide a novel method for producing (2S)-2-benzyl-3-(cis-hexahydro-2-isoindolinylcarbonyl)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-isoindolinylcarbonyl)propionic acid, which is characterized in that 2-benzylidene-3-(cis-hexahydro-2-isoindolinylcarbonyl)propionic 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.