申请人:Sankyo Company Limited
公开号:US04495188A1
公开(公告)日:1985-01-22
Acylaminoquinazoline derivatives of formula ##STR1## (in which: R.sup.1 represents a lower alkoxy group, a substituted or unsubstituted lower alkyl group, a cycloalkyl group, a lower alkenyl group, a vinyl group having an optionally substituted phenyl or furyl substituent, an optionally substituted phenyl group, a furyl group, an oxazolyl group, a methylthiooxadiazolyl group or a tetrahydrofuryl group; R.sup.2 represents a hydrogen atom or a lower alkyl group; R.sup.3 represents a lower alkyl group or an optionally substituted phenyl group; R.sup.4 represents a hydrogen atom or an acyloxy-substituted phenyl group; X represents a methylene group or a sulphur atom; and n is 2 or 3) and pharmaceutically acceptable acid addition salts thereof are valuable antihypertensive agents and inhibit the activity of the angiotension I-converting enzyme. They may be prepared by reacting a 4-aminoquinazoline derivative with a carboxylic acid or reactive derivative thereof corresponding to the amide group which it is desired to introduce at the 4- position of said compound of formula (I). The compounds of the invention may be formulated with conventional pharmaceutically acceptable carriers or diluents to provide a pharmaceutical composition.
式子##STR1##中,R.sup.1表示较低的烷氧基、取代或未取代的较低烷基、环烷基、较低烯基、乙烯基,其具有可选取代的苯基或呋喃基取代基、可选取代的苯基、呋喃基、噁唑基、甲硫氧噻唑基或四氢呋喃基;R.sup.2表示氢原子或较低烷基;R.sup.3表示较低烷基或可选取代的苯基;R.sup.4表示氢原子或酰氧取代的苯基;X表示亚甲基基团或硫原子;n为2或3。该类化合物及其药学上可接受的酸加成盐是有价值的降压剂,并抑制血管紧张素I转化酶的活性。可通过将4-氨基喹唑啉衍生物与羧酸或反应性衍生物反应制备而成,其对应于所需引入到式(I)化合物的4-位的酰胺基团。本发明的化合物可以与传统的药学上可接受的载体或稀释剂配制成药物组成物。