PROCESS FOR THE PREPARATION OF PYRIDO [2,1-A] ISOQUINOLINE DERIVATIVES COMPRISING OPTICAL RESOLUTION OF AN ENAMINE
申请人:Abrecht Stefan
公开号:US20130018191A1
公开(公告)日:2013-01-17
This invention relates to a process for the preparation of pyrido[2,1-a] isoquinoline derivatives of the formula
wherein R
1
, R
2
, R
3
and R
4
are defined in the specification, comprising the optical resolution of an enamine of the formula
wherein R
1
is lower alkyl, in the presence of an optical active resolving agent to form an (S)-enamine salt of the formula
wherein RCO
2
−
is the conjugate base of the resolving agent.
Process For The Preparation Of Pyrido [2,1-A] Isoquinoline Derivatives Comprising Optical Resolution Of An Enamine
申请人:Hoffmann-La Roche Inc.
公开号:US20150126743A1
公开(公告)日:2015-05-07
This invention relates to a process for the preparation of pyrido[2,1-a]isoquinoline derivatives of the formula
wherein R
1
, R
2
, R
3
and R
4
are defined in the specification, comprising the optical resolution of an enamine of the formula
wherein R
1
is lower alkyl, in the presence of an optical active resolving agent to form an (S)-enamine salt of the formula
wherein RCO
2
−
is the conjugate base of the resolving agent.
PROCESS FOR THE PREPARATION OF PYRIDO[2,1-A]ISOQUINOLINE DERIVATIVES COMPRISING OPTICAL RESOLUTION OF AN ENAMINE
申请人:F. Hoffmann-La Roche AG
公开号:EP2066667B1
公开(公告)日:2011-08-31
A New Annelation Reaction of Cyclic Schiff Bases
作者:A. A. Akhrem、Yu. G. Chernov
DOI:10.1055/s-1980-29293
日期:——
PROCESS FOR THE PREPARATION OF PYRIDO [2,1-a] ISOQUINOLINE DERIVATIVES COMPRISING OPTICAL RESOLUTION OF AN ENAMINE
申请人:Abrecht Stefan
公开号:US20080071087A1
公开(公告)日:2008-03-20
This invention relates to a process for the preparation of pyrido[2,1-a]isoquinoline derivatives of the formula
wherein R
1
, R
2
, R
3
and R
4
are defined in the specification, comprising the optical resolution of an enamine of the formula
wherein R
1
is lower alkyl, in the presence of an optical active resolving agent to form an (S)-enamine salt of the formula
wherein RCO
2
−
is the conjugate base of the resolving agent.