Compounds having the formula ##STR1## wherein Z is a substituted or unsubstituted oxazole, is isoxazole, thiazole or isothiazole group are potent antihypertensive drugs which have generally less .alpha.-adrenergic blocking activity than does 2-[4-(2-furoyl)-piperazin-1-yl]-4-amino-6,7-dimethoxy-quinazoline which is a known potent antihypertensive drug.
具有以下结构式##STR1##的化合物,其中Z是取代或未取代的
噁唑、
异噁唑、
噻唑或
异噻唑基团,是有效的降压药物,通常具有比已知有效的降压药物2-[4-(2-
呋喃基)-
哌嗪-1-基]-
4-氨基-6,7-二甲氧基喹唑啉具有更少的α-
肾上腺素受体阻滞活性。