3,3-Substituted spiro-1,2,4-benzothiadiazines and pharmaceutical compositions containing the same
申请人:Merck & Co., Inc.
公开号:EP0010234A1
公开(公告)日:1980-04-30
New 3,3-substituted spiro-1,2,4-benzothiadiazines of the formula 1, wherein X' is H or halo or trifluoromethyl, X2 is H, halo or -SO2NH2, R is H or lower alkyl, R is H or lower alkyl, R2 is lower alkyl or cycloalkyl, R1 and R2 may be joined to form - (CH2)-4or5,R3 is H, lower alkyl or aryl, m is 0 or 1 and n is 0 or 5 and pharmaceutically acceptable salts thereof, are prepared by reacting an aniline compound of the formula II with a keton of the formula III, preferably in the ketal form, wherein the substituents of II and III are the same as described above, preferably in the presence of a mineral acid catalyst.
The compounds I are provided in pharmaceutical antihypertensive compositions.
式 1 的新 3,3-取代螺-1,2,4-苯并噻二嗪,其中 X'为 H 或卤代或三氟甲基,X2 为 H、卤代或-SO2NH2,R 为 H 或低级烷基,R 为 H 或低级烷基,R2 为低级烷基或环烷基,R1 和 R2 可连接形成-(CH2)-4 或 5,R3 为 H、低级烷基或芳基、m 是 0 或 1,n 是 0 或 5,以及它们的药学上可接受的盐,是通过式 II 的苯胺化合物与式 III 的酮反应制备的,最好是酮形式,其中 II 和 III 的取代基与上述相同,最好是在矿物酸催化剂存在下反应。
化合物 I 可用于药物降压组合物中。