Synthesis and Pharmacological Properties of 1-Aryl-4-(3′4′,5′-trimethoxybenzoyl)piperazines

A series of 1-aryl-4-(3′,4′,5′-trimethoxybenzoyl)piperazines (IIa - IIg) having structures containing 3,4,5-trimethoxybenzoyl fragments were synthesized and characterized. Compounds IIa and IIc - IIg demonstrated weak anxiolytic properties and moderately decreased the spontaneous motor activity in rats. Compound IIb exhibited anxiolytic activity comparable with that of buspirone but, in contrast to this reference drug, increased the motor activity of test animals.