[EN] NEW PROCESS FOR THE PREPARATION OF LEVOCETIRIZINE AND INTERMEDIATES THEREOF<br/>[FR] NOUVEAU PROCÉDÉ POUR LA PRÉPARATION DE LA LÉVOCÉTIRIZINE ET DE SES INTERMÉDIAIRES
申请人:KRKA TOVARNA ZDRAVIL D D NOVO
公开号:WO2009150147A1
公开(公告)日:2009-12-17
The present invention describes a novel process for the preparation of levocetirizine and pharmaceutically acceptable acid addition salts thereof via a ketocetirizine ester and new ketocetirizine ester intermediates used in that process. reaction of ketocetirizine of the formula (IIIb) to a ketocetirizine ester of the formula (IV) or a salt thereof.
本发明描述了一种通过酮西替利嗪酯和在该过程中使用的新的酮西替利嗪酯中间体制备左西替利嗪及其药用可接受的酸盐的新颖过程。将式(IIIb)的酮西替利嗪反应成式(IV)的酮西替利嗪酯或其盐。