4-Amino-6,7-dimethoxy-2-piperazinylquinazoline derivatives, their preparation and use

摘要

Novel piperazinylquinazoline and homopiperazinylquinazoline compounds which have useful antihypertensive activity and their use including pharmaceutical compositions containing said derivatives as the active antihypertensive component thereof. Said compounds have the following formula. <IMAGE> wherein m is 2 or 3 and R is as defined in the specification.