申请人:Kadam Mahadev Suresh
公开号:US20070082943A1
公开(公告)日:2007-04-12
The present invention discloses a novel process for purification of trans-4-methyl cyclohexylamine HCl and 4[-2-(3-Ethyl-4-methyl-2-carbonyl pyrrolidine amido) ethyl] benzene sulfonamide used in the synthesis of 3-Ethyl-2,5-dihydro-4-methyl-N-[2-[4-[[[[(trans-4-methyl cyclohexyl)amino]carbonyl]amino]sulfonyl]phenyl]ethyl]-2-oxo-1H-pyrrole-1-carboxamide (I), popularly known as Glimepiride. The present invention also discloses a novel purification of Glimepiride usingS methanolic ammonia and glacial acetic acid to obtain highly pure Glimepiride Form I (I) having the undesired cis isomer below 0.15%. Glimepiride (I) is useful in the treatment of diabetes mellitus.
本发明揭示了一种新的过程,用于纯化合成3-乙基-2,5-二氢-4-甲基-N-[2-[4-[[[[(trans-4-甲基环己基)氨基]羰基]氨基]磺酰基]苯基]乙基]-2-氧代-1H-吡咯烷-1-羧酰胺(I),通常称为格列美脲所使用的反式-4-甲基环己胺盐酸盐和4-[2-(3-乙基-4-甲基-2-羰基吡咯烷酰)乙基]苯磺酰胺的纯化。本发明还揭示了一种新的格列美脲的纯化方法,使用S甲醇氨和冰乙酸,以获得高纯度的格列美脲I型(I),其不希望的顺式异构体低于0.15%。格列美脲(I)在糖尿病治疗中有用。