4-(2-hydroxy-3-aminopropoxy)-2-indoleacetic acid derivs - - with beta-adrenergic blocking activity

摘要

Cpds. of formula (I): (where (a) R1 and R2 are lower alkyl, (b) R1 = H and R2 = phenethyl, or (c) R1 + R2= (CH2)3, and R3 is lower alkoxy, NH2, mono- or di- (lower alkyl)amino, N', N'-di(lower alkyl) hydrazino, 1-pyrrolidinyl, piperidino or morpholino) and their acid addn. salts are prepd. by redn. of a cpd. (II): and opt. converting into a salt.