[EN] PROCESSES FOR PREPARING LEVOCETIRIZINE AND PHARMACEUTICALLY ACCEPTABLE SALTS THEREOF [FR] PROCÉDÉS DE PRÉPARATION DE LÉVOCÉTIRIZINE ET DE SES SELS PHARMACEUTIQUEMENT ACCEPTABLES
[EN] PROCESSES FOR PREPARING LEVOCETIRIZINE AND PHARMACEUTICALLY ACCEPTABLE SALTS THEREOF [FR] PROCÉDÉS DE PRÉPARATION DE LÉVOCÉTIRIZINE ET DE SES SELS PHARMACEUTIQUEMENT ACCEPTABLES
PROCESS FOR PREPARATION OF SUBSTANTIALLY OPTICALLY PURE LEVOROTATORY AND DEXTROROTATORY ENANTIOMERS OF CETIRIZINE USING NOVEL INTERMEDIATES
申请人:Mohan Rao Dodda
公开号:US20090281318A1
公开(公告)日:2009-11-12
The present invention relates to a novel and commercially viable process for substantially optically pure levorotatory and dextrorotatory enantiomers of cetirizine intermediate, 1-[(4-chlorophenyl)phenylmethyl]piperazine, thereby producing substantially optically pure levorotatory and dextrorotatory enantiomers of cetirizine and their pharmaceutical acceptable acid addition salts thereof in high purity and in high yield using novel intermediates.
[EN] PROCESSES FOR PREPARING LEVOCETIRIZINE AND PHARMACEUTICALLY ACCEPTABLE SALTS THEREOF<br/>[FR] PROCÉDÉS DE PRÉPARATION DE LÉVOCÉTIRIZINE ET DE SES SELS PHARMACEUTIQUEMENT ACCEPTABLES