AN IMPROVED PROCESS FOR THE PREPARATION OF SOLIFENACIN AND ITS PHARMACEUTICALLY ACCEPTABLE SALTS THEREOF

摘要

The present invention relates to an improved process for the preparation of solifenacin compound of formula (1) and its succinate salt compound of formula (1a), comprising the condensation of (R)-3- quinuclidinol with (S)-ethyl- 1 -phenyl- 1,2,3,4-tetrahydro-2-isoquinoline carboxylate in presence of a suitable hydroxide base in a suitable solvent.