申请人:Mallinckrodt LLC
公开号:US20150141649A1
公开(公告)日:2015-05-21
The present invention provides processes for preparing normorphinans from N-substituted morphinans. In particular, the invention provides methods for removing the N-substituent from the N-substituted morphinan to from a normorphinan carbamate, and then removing the carbamate functionality from the normorphinan carbamate to form the normorphinan.
本发明提供了从N-取代吗啡内酯制备正吗啡内酯的方法。具体而言,本发明提供了从N-取代吗啡内酯中去除N-取代基,形成正吗啡内酯羰酸酯的方法,然后去除正吗啡内酯羰酸酯中的羰酸酯功能团,形成正吗啡内酯的方法。