申请人:Huang Xiangliang
公开号:US20110046391A1
公开(公告)日:2011-02-24
The present invention discloses a process for preparing eprosartan mesylate, in which eprosartan is dissolved or suspended in glacial acetic acid, then methanesulfonic acid is added and a solution of eprosartan mesylate in glacial acetic acid is obtained by stirring, a solid of eprosartan mesylate is precipitated by continuously stirring and then obtained by filtration, or a solid of eprosartan mesylate is obtained by concentrating the glacial acetic acid to dry, or a solid of eprosartan mesylate is obtained by adding dropwise an organic ester solvent into the glacial acetic acid under stirring to precipitate a crystal and separate the crystal.
本发明揭示了一种制备依普利沙坦甲磺酸盐的方法,其中依普利沙坦被溶解或悬浮在冰乙酸中,然后加入甲磺酸,通过搅拌得到冰乙酸中依普利沙坦甲磺酸盐的溶液,通过连续搅拌沉淀依普利沙坦甲磺酸盐的固体,然后通过过滤获得,或通过将冰乙酸浓缩至干燥来获得依普利沙坦甲磺酸盐的固体,或通过在搅拌下滴加有机酯溶剂到冰乙酸中来沉淀晶体并分离晶体来获得依普利沙坦甲磺酸盐的固体。