申请人:Divi's Laboratories Ltd.
公开号:US10781170B1
公开(公告)日:2020-09-22
A process for the preparation of Brivaracetam, an anti-convulsion drug, is provided comprising Hofmann rearrangement of (S)-3-(2-(chloroamino)-2-oxoethyl) hexanoic acid, followed by cyclization resulting in (R)-4-propyl-pyrrolidin-2-one which on condensation with bromo butyric acid or ester followed by reaction with ammonia results in Brivaracetam.
提供一种制备抗癫痫药物布利瓦拉塞坦的工艺,包括对(S)-3-(2-(氯胺基)-2-氧代乙基)己酸进行霍夫曼重排,随后进行环化反应得到(R)-4-丙基吡咯烷-2-酮,然后与溴丁酸或酯缩合,再与氨反应形成布利瓦拉塞坦。