[EN] PROCESS FOR PREPARING 7&bgr;-SUBSTITUTED 6α,14α -ETHENOMORPHINANS AND 7&bgr;-SUBSTITUTED 6α,14α-ETHANOMORPHINANS [FR] PROCÉDÉ POUR LA PRÉPARATION D'ÉTHÉNO-6&Agr;,14&Agr;-MORPHINANES À SUBSTITUTION 7&Bgr; ET D'ÉTHANO-6&Agr;,14&Agr;-MORPHINANES À SUBSTITUTION 7&Bgr;
PROCESS FOR PREPARING 7BETA-SUBSTITUTED 6ALPHA,14ALPHA-ETHENOMORPHINANS AND 7BETA-SUBSTITUTED 6ALPHA,14ALPHA-ETHANOMORPHINANS
申请人:REISCH Helge Alfred
公开号:US20160068538A1
公开(公告)日:2016-03-10
The application is directed to a process for increasing the proportion of 7β-epimer in an 7α/7β-epimer mixture of a 7-substituted 6α,14α-ethenomorphinan or a 7-substituted 6α,14α-ethanomorphinan, and specifically of compounds of Formula (I), wherein G, R
2
-R
4
, and are defined as set forth in the specification. The application is also directed to a process for purifying the 7β-epimer from an 7α/7β-epimer mixture of a 7-substituted 6α,14α-ethenomorphinan or a 7-substituted 6α,14α-ethanomorphinan. The application is also directed to a process for preparing 7β-substituted compounds of Formula V
b
wherein G and R
2
-R
5
are defined as set forth in the specification.