The present invention provides a process for the preparation of a compound of formula (VI), or a salt or derivative thereof,
wherein R
1
and R
2
are independently C
1-8
alkyl and * represents a stereocentre.
DIHYDROETORPHINES AND THEIR PREPARATION
申请人:EURO-CELTIQUE S.A.
公开号:US20160115174A1
公开(公告)日:2016-04-28
The present invention provides a process for the preparation of a compound of formula (VI), or a salt or derivative thereof,
wherein R
1
and R
2
are independently C
1-8
alkyl and * represents a stereocentre.