Novel quinazoline derivatives, a pharmaceutical composition containing such derivatives as active ingredient and a process for producing the quinazoline derivatives

摘要

There are presented novel quinazoline derivatives, namely 2-(4-substituted-carbamoyl-piperazin-1-yl)quinazoline derivatives, 2-(4-substituted-carbamoyl-homopiperazin-1--yl)quinazoline derivatives, 2-(4-substituted-thiocarbamoyl--piperazin-a-yl)quinazoline derivatives and 2-(4-substituted--thiocarbamoyl-piperazin-1-yl)quinazoline derivatives and a process for producing same. In form of pharmaceutical preparation said derivatives exhibit excellent antihypertensive activities.