N-(amino(or hydroxy) phenethyl)-1,2,3,4-tetrahydroisoquinolines, precursors thereof, and methods of preparation
申请人:PENNWALT CORPORATION
公开号:EP0051190A2
公开(公告)日:1982-05-12
Analgesic 1,2,3,4 tetrahydroisoquinolines of the formula
wherein R, and R2 respectively are hydrogen, hydroxy or alkoxy of 1 to 4 carbon atoms, R3 and R4 respectively are hydrogen or alkyl of 1 to 4 carbon atoms, and R5 is hydroxy, nitro or
wherein Rs and R7 respectively are hydrogen, alkyl of 1 to 4 carbon atoms or RCO- wherein R is hydrogen or alkyl of 1 to 4 carbon atoms; pharmaceutically acceptable addition salts thereof with non-toxic acids; analgesic compositions thereof in an inert, pharmaceutical carrier; and methods of preparation from corresponding R1, R2, R3 and R4-substituted tetrahydroisoquinolines.