申请人:Pfizer Inc.
公开号:US20030096821A1
公开(公告)日:2003-05-22
The invention provides a process for the optical resolution of a racemic mixture, or an optically enriched mixture, of trans-7-(hydroxymethyl)octa-hydro-2H-pyrido-1,2a)pyrazine, a key intermediate for preparing pharmacologically active 2,7-substituted octahydro-1H-pyrido[1,2-a]pyrazine derivatives useful in the treatment of disorders of the dopamine system. The process of the invention involves use of D-(−) or L-(+)naproxen as a resolving agent.
本发明提供了一种对反式-7-(羟甲基)八氢-2H-吡啶-1,2a)吡嗪的外消旋混合物或光学富集混合物进行光学解析的工艺,反式-7-(羟甲基)八氢-2H-吡啶-1,2a)吡嗪是制备具有药理活性的2,7-取代八氢-1H-吡啶[1,2-a]吡嗪衍生物的关键中间体,可用于治疗多巴胺系统疾病。本发明的工艺涉及使用D-(-)或L-(+)萘普生作为溶解剂。