2,4-Diaminoquinazoline compounds of the formula ##STR1## or a pharmaceutically acceptable salt thereof wherein R is a pyrimidinyl, pyrazinyl, pyridazinyl or triazinyl group linked to the piperazine ring by one of its carbon atoms, and optionally substituted by hydroxy, halogen, alkyl, aralkyl, alkoxy, aralkoxy, alkylthio, aryl, aryloxy and certain amino groups; their use as an antihypertensive agent and pharmaceutical compositions containing them.
该专利描述了一种公式为##STR1##或其药学上可接受的盐的
2,4-二氨基喹唑啉化合物,其中R是一种
嘧啶基,
吡嗪基,
吡啶嗪基或三嗪基,通过其碳原子之一连接到
哌嗪环,并可选择地被羟基,卤素,烷基,芳基烷基,烷氧基,芳基氧基,烷
硫基,芳基,芳基氧基和某些
氨基基团取代。该化合物可用作降压剂,并包含含有它们的药物组合物。