申请人:Kumar Ashok
公开号:US20080103334A1
公开(公告)日:2008-05-01
A process for preparation of gabapentin comprising a step of obtaining 1,1-cyclohexane diacetic acid monoamide from 1,1-cyclohexane diacetic acid anhydride, wherein said reaction is characterized by the use of ammonia precursor or pre-generated ammonia-isopropanol solution. The invention further discloses preparation of gabapentin and isolation of gabapentin in polymorphic Form II with high yield and purity.
制备
加巴喷丁的方法包括从1,1-
环己烷二
乙酸酐获得1,1-
环己烷二
乙酸单酰胺的步骤,其中该反应的特点是使用
氨的前体或预生成的
氨-
异丙醇溶液。该发明还揭示了
加巴喷丁的制备以及高产率和纯度下的多形式II
加巴喷丁的分离。