Substituted aryl and aralkyl amides in the treatment of parkinsonism
申请人:Schering Corporation
公开号:US03944675A1
公开(公告)日:1976-03-16
Amides having aromatic substituents of the formula: ##SPC1## Wherein R is an acyl radical derived from a carboxylic acid having from 3 to 20 carbon atoms, X and Y are members selected from the group consisting of hydrogen, fluoro, trifluoromethyl and hydroxy, and n is an integer selected from the group consisting of 0, 1 and 2, exhibit an effect upon the central nervous system.
An efficient enantioselective hydrogenation of sterically hindered cyclic imines catalyzed by the Ir-tBu-ax-Josiphos complex has been described, producing a series of useful chiral bulky tetrahydroisoquinoline analogs in high isolated yields (85–96%) with good to excellent enantioselectivities (74–99% ee). This transformation provided highly straightforward access to the useful derivatives of tetrahydroisoquinolines