申请人:Boehringer Ingelheim KG
公开号:US05945535A1
公开(公告)日:1999-08-31
The present invention relates to a new process for preparing norbenzomorphan, the central intermediate step in the preparation of pharmaceutically useful benzomorphan derivatives of general formula 1 ##STR1## especially (-)-(1R,5S,2"R)-3'-hydroxy-2-(2-methoxypropyl)-5,9,9-trimethyl-6,7-benzomo rphan or \x9b(-)-(2R,6S,2'R)-3-(2-methoxypropyl)-6,11,11-trimethyl-1,2,3,4,5,6 -hexahydro-2,6-methano-benzo\x9b.alpha.!oxacin-9-ol! (BIII 277).
本发明涉及一种制备诺苯吗啡的新工艺,该工艺是制备一般式1的药用苯吗啡衍生物的中心中间步骤,特别是(-)-(1R,5S,2"R)-3'-羟基-2-(2-甲氧基丙基)-5,9,9-三甲基-6,7-苯并吗啡或\x9b(-)-(2R,6S,2'R)-3-(2-甲氧基丙基)-6,11,11-三甲基-1,2,3,4,5,6-六氢-2,6-甲基-苯并\x9b.alpha.!噁唑啉-9-醇! (BIII 277)的制备。