[EN] PROCESSES FOR PREPARING DRONEDARONE AND ITS INTERMEDIATES<br/>[FR] PROCÉDÉ POUR PRÉPARER UN DÉRIVÉ DE BENZOFURANE ET DES PRODUITS INTERMÉDIAIRES DE CELUI-CI
申请人:CADILA HEALTHCARE LTD
公开号:WO2012032545A1
公开(公告)日:2012-03-15
The invention relates to process for the preparation of benzofuran derivative and intermediates thereof. More particularly, it relates to processes for the preparation of dronedarone or pharmaceutically acceptable acid addition salts thereof in crystalline form. The invention also relates to pharmaceutical compositions that include the dronedarone hydrochloride in crystalline form substantially free from disulfonamide impurity.
The present invention relates to crystalline dronedarone salts, a process for their preparation as well as pharmaceutical compositions comprising these salts.
本发明涉及晶体龙达酮盐的制备方法以及包含这些盐的药物组合物。
US8481763B2
申请人:——
公开号:US8481763B2
公开(公告)日:2013-07-09
PREPARATION PROCESS OF DRONEDARONE AND ITS SALTS
申请人:Hou Xianshan
公开号:US20130072697A1
公开(公告)日:2013-03-21
A process is provided for preparing dronedarone or pharmaceutically acceptable salts thereof. The process comprises reacting 5-amino-2-butyl-3-(4-[3-(dibutylamino)propoxy]benzoyl)benzofuran (compound A) with methanesulfonyl chloride without any catalyst to provide crude dronedarone hydrochloride, which is purified to afford highly pure product. Then, the dronedarone hydrochloride can be converted to highly pure dronedarone through treatment with an alkaline solvent, the dronedarone can be further converted to other pharmaceutically acceptable salts of dronedarone. In this process, acylation between compound A and methanesulfonyl chloride is carried out successfully and the formation of the dimethylsulfonyl by-product is inhibited.