| 摘要 |
DIR 0447 The present invention is concerned with compounds of formula 1: (1) wherein R1 is straight or branched alkyl having 1-4 C-atoms, halogen or cyano; n has the value 0-1; R2 is hydrogen, (1-6 C)alkyl, (3-6 C)alkenyl, (3-6 C)alkenyl, (3-6 C)cycloalkyl, (3-6 C)cycloalkyl (1-4 C)alkyl, phenyl, phenyl-(1-3 C)alkyl, COOR6, COR6, CONR6R7 or SO2-R6, wherein R6 and R7 independently of each other are hydrogen, (1-6 C)alkyl, (3-6 C)cycloalkyl, phenyl or phenyl-(1-4 C)alkyl, wherein the benzene ring is optionally substituted with a methyl group or a halogen atom, with the proviso that R6 is not hydrogen when R2 is a group COOR6 or SO2R6; R3 is hydrogen, straight or branched (1-6 C)alkyl or a phenyl-(1-3 C)alkyl group optionally substituted in the benzene ring; and A is a group of formula 2 or 3 DIR 0447 DIR 0447 (2) (3) wherein one of the groups R8, R9, and R10 is hydrogen, (1-4 C)alkyl, (3-6 C)cycloalkyl, (3-4 C)alkenyl or (3-4 C)alkynyl and the two other groups, independently of each other, are hydrogen or (1-4 C)alkyl, and the pharmacologically acceptable acid addition salts thereof, which are pharmaceutically useful as strong and selective antagonists of "neuronal" 5-hydroxy tryptamine (5-HT) receptors.
|
