申请人:Takeda Chemical Industries, Ltd.
公开号:EP0186310A1
公开(公告)日:1986-07-02
1, 4-Benzothiazine derivatives of the formula;
wherein R1 and R2 independently stand for hydrogen, halogen, a lower alkyl group, a lower alkoxy group or trifluoromethyl group, or R1 and R2, taken together, form a 5-7 membered ring represented
wherein n is an integer of 3 to 5 or a 5-6 membered ring represented by
wherein m is 1 or 2, R3 and R4 independently stand for hydrogen, halogen, a lower alkyl group, a lower alkoxy group or trifluoromethyl group, R5 stands for hydrogen or a lower alkyl group, and A stands for an alkylene group or pharmaceutically acceptable salts thereof, are useful as prophylactic or therapeutic drugs for, among others, hypertension and ischemic cardiovascular diseases.
式中 R1 和 R2 分别代表氢、卤素、低级烷基、低级烷氧基或三氟甲基,或 R1 和 R2 合在一起形成一个 5-7 分子环(其中 n 为 3 至 5 的整数)或一个 5-6 分子环(其中 m 为 1 或 2),R3 和 R4 分别代表氢、卤素、低级烷基、低级烷氧基或三氟甲基,R5 代表氢或低级烷基,A 代表亚烷基或其药学上可接受的盐。