Process for the preparation of (8aS,12aS,13aS)-decahydroisoquino[2,1-g][1,6]-naphthyridin-8-one derivatives
申请人:SYNTEX (U.S.A.) INC.
公开号:EP0505183A2
公开(公告)日:1992-09-23
The invention provides a process for preparing single enantiomers of compounds represented by the formula :
and chiral acid addition salts thereof ;
wherein :
X and Y are independently hydrogen ; lower alkyl ; lower alkoxy; or halo; or X and Y taken together is methylenedioxy or ethylene-1,2-dioxy;
which includes reduction of a compound represented by the formula :
to give a mixture of stereoisomers represented by the formula :
wherein each wavy line independently represents a bond in either the α or β position ;
followed by dissolving the mixture of stereoisomers and a chiral resolving acid in a suitable solvent and allowing the solution to crystallize, giving a salt of the desired enantiomer.
Process for the preparation of (8As,12AS,13AS)-decahydroisoquino
申请人:Syntex (U.S.A.) Inc.
公开号:US05231181A1
公开(公告)日:1993-07-27
The invention provides a process for preparing single enantiomers of compounds represented by the formula: ##STR1## and chiral acid addition salts thereof; wherein: X and Y are independently hydrogen; lower alkyl; lower alkoxy; or halo; or X and Y taken together is methylenedioxy or ethylene-1,2-dioxy; which includes reduction of a compound represented by the formula: ##STR2## to give a mixture of stereoisomers represented by the formula: ##STR3## wherein each wavy line independently represents a bond in either the .alpha. or .beta. position; followed by dissolving the mixture of stereoisomers and a chiral resolving acid in a suitable solvent and allowing the solution to crystallize, giving a salt of the desired enantiomer.