申请人:Takeda Chemical Industries, Ltd.
公开号:US04789675A1
公开(公告)日:1988-12-06
1,4-Benzoxazine derivatives representable by the general formula; ##STR1## wherein R.sup.1 and R.sup.2 independently stand for hydrogen, halogen atom, nitro group, an optionally substituted lower alkyl group, an optionally substituted amino group, an optionally substituted hydroxyl group, a lower alkoxycarbonyl group, or when R.sup.1 and R.sup.2 are adjacent to each other, R.sup.1 and R.sup.2 combinedly stand for a ring representable by --CH.sub.2).sub.m (wherein m denotes an integer of 3 to 5) or --O--CH.sub.2).sub.n O-- (wherein n denotes an integer of 1 to 3), R.sup.3 stands for hydrogen or a lower alkyl group, R.sup.4 and R.sup.5 independently stand for hydrogen, halogen atom, an optionally substituted lower alkyl group or an optionally substituted hydroxyl group, and A stands for an alkylene group or acid addition salts thereof, are useful as prophylactic or therapeutic drugs for, among others, hypertension or ischemic dieases.
1,4-苯并噁嗪衍生物可由以下一般式表示;其中R.sup.1和R.sup.2分别代表氢、卤原子、硝基、可选择取代的较低烷基、可选择取代的氨基、可选择取代的羟基、较低烷氧羰基、或当R.sup.1和R.sup.2相邻时,R.sup.1和R.sup.2联合代表一个可由--CH.sub.2).sub.m(其中m表示3至5的整数)或--O--CH.sub.2).sub.n O--(其中n表示1至3的整数)表示的环,R.sup.3代表氢或较低烷基,R.sup.4和R.sup.5分别代表氢、卤原子、可选择取代的较低烷基或可选择取代的羟基,A代表烷基或其酸盐,可用作预防或治疗高血压或缺血性疾病等药物。