[EN] PROCESS FOR THE PREPARATION OF BREXPIPRAZOLE AND INTERMEDIATES THEREOF<br/>[FR] PROCÉDÉ DE PRÉPARATION DE BREXPIPRAZOLE ET D'INTERMÉDIAIRES DE CELUI-CI
申请人:ALEMBIC PHARMACEUTICALS LTD
公开号:WO2018060916A1
公开(公告)日:2018-04-05
The present invention relates to process for preparation of Brexpiprazole of formula-l and intermediates thereof. The present invention is further directed to process for the preparation of anhydrous form of Brexpiprazole, pharmaceutical compositions containing them.
This article describes the identification, synthesis, and control of several unknown related substances present in the form of critical impurities that were observed during the process development for the antipsychotic drug substance brexpiprazole (BRX). On the basis of liquid chromatography–mass spectrometry (LC–MS) evidence of impurities and analysis of the employed synthetic route of BRX, the structures