Fremgangsmåde til fremstilling af Ramipril

摘要

Enantio-specific synthesis of optically pure (2S)-acetylamino-3-(2-oxo-cyclopentyl)- propionic acid (I) comprising converting enantiomeric mixture of (1 -4C alkyl)-2- acetylamino-3-(2-oxocyclopentyl) propionoate (II) (+ and -) under the influence of an Alkaline serine endopeptidase is disclosed. The invention further describes use of optically pure (2S)-acetylamino-3-(2-oxocyclopentyl)-propionic acid (I) formed by the process of present invention, in the preparation of Ramipril.