PROCESS FOR THE PREPARATION OF PERHYDROISOINDOLE DERIVATIVE

摘要

The present invention relates to a novel, efficient and industrially advantageous process for preparing perhydroisoindole derivative, particularly (S)-mitiglinide of formula (I): and pharmaceutically acceptable salts thereof. Further, it relates to novel amide intermediates of formula (VI), including salts, solvates, hydrates, polymorphs, isomers and racemic mixtures thereof useful in the process of present invention. Formula (VI): wherein R is selected from straight chain or branched C 1-6 alkyl, unsubstituted or substituted aryl, unsubstituted or substituted arylalkyl. The present invention also relates to amorphous form of mitiglinide calcium, its preparation and process for its conversion to crystalline mitiglinide calcium.