4-Phenyl-1,2,3,4-tetrahydroisoquinolines whose structures have two hydroxy groups substituted at the 3,4- position on the 4-phenyl ring have been found to have renal vasodilating activity upon internal administration. The active ingredients are prepared by cyclizing N-(2- substituted benzyl)-1-(3,4-dimethoxyphenyl)-amino-ethanol using either a Lewis acid or an acid cyclizing agent followed by demethylation at the 3,4-dimethoxyphenyl moiety.
Synthesis, resolution, absolute stereochemistry, and enantioselectivity of 3',4'-dihydroxynomifensine
作者:Penelope A. Dandridge、Carl Kaiser、Martin Brenner、Dimitri Gaitanopoulos、Larry D. Davis、R. Lee Webb、James J. Foley、Henry M. Sarau
DOI:10.1021/jm00367a006
日期:1984.1
enantiomers of 1a was determined by single-crystal X-ray diffractometric analysis. Examination of the isomers in several pharmacological test systems revealed a high degree of enantioselectivity. D-1 dopaminergicactivity resides almost exclusively in the S enantiomer. The findings of the study have been employed to suggest an accessory binding site on the dopamine receptor(s) that differs from that advanced