3-oxadiazole and 3-carboxylic acid beta-carboline derivatives, and their use as psychotropic agents

摘要

Compounds of formula I <IMAGE> (I) wherein X is COOR3 or an oxadiazolyl radical of the formula or R2 is H, lower alkyl or cycloalkyl, R3 is lower alkyl, R4 is hydrogen, lower alkyl or lower alkoxyalkyl, RA is -CHR1-Z-R5, Z is sulfur or oxygen, R1 is lower alkyl or optionally substituted phenyl, and R5 is hydrogen, phenyl or optionally substituted lower alkyl, and wherein each compound can contain 1 or 2 RA radicals have valuable pharmacological properties.