Stereoselective process for the preparation of 2-amino-ethanol derivatives having a central analgesic activity and intermediates thereof
申请人:ZAMBON GROUP S.p.A.
公开号:EP0449011B1
公开(公告)日:1997-10-08
Stereoselective process for the preparation of 2-amino-ethanol
申请人:Zambon Group S.p.A
公开号:US05142066A1
公开(公告)日:1992-08-25
A stereoselective process for the preparation of the compounds of formula ##STR1## wherein R, R.sub.1, R.sub.2, a and b have the meanings reported in the specification, is described. The compounds of formula I have a remarkable central analgesic activity and they are useful in the pharmaceutical field.