2,3-Dihydro-1,4-benzodioxin -5-yl-piperazine derivatives, their preparation and pharmaceutical compositions containing them

摘要

The present invention is concerned with compounds having 5-HT1A antagonistic activity useful in treating CNS disorders and having formula 2 wherein R1 is halogen, lower alkyl or alkoxy, hydroxy, trifluotomethyl or cyano, m has the value 1 or 2 and n has the value 0 or 1, A represents an alkylene chain containing 2-6 C-atoms which may be substituted with one or more lower alkyl groups or a monocyclic (hetero)aryl group, and B is methylene, ethylene, carbonyl, sulfinyl, sulfonyl or sulfur, and salts thereof.