申请人:IMPERIAL CHEMICAL INDUSTRIES PLC
公开号:EP0052442A1
公开(公告)日:1982-05-26
Novel heterocyclic compounds of the formula:-
wherein either X is -CR1R2- and Y is oxygen, sulphur or -NR3-, wherein R1, R2 and R3, which may be the same or different, each is hydrogen or alkyl of up to 4 carbon atoms; or X is oxygen, sulphur or -NH- and Y is -CH2-; wherein R4 and R5, which may be the same or different, each is hydrogen, cyano, nitro, amino or hydroxy, or alkylthio of up to 4 carbon atoms, or has various other meanings defined in i claim 1, provided that R4 and R5 are not both hydrogen; or wherein R4 and R5 are joined together such that with the benzene ring A they form a benzheterocyclic ring as defined in claim 1; and therein the benzene ring A may optionally bear one or more further substituents; or a salt thereof where appropriate.
These compounds possess cardiotonic properties, and some of them possess peripheral vasodilator properties, and they are useful for the treatment of acute or chronic heart failure. Representative of the compounds is N,N-dimethyl-p-(5,6-dihydro-5-oxo-4H-1,3,4-thiadiazin-2-yl)benzamide. Also disclosed are processes for the manufacture of the compounds and pharmaceutical compositions containing them.
式中的新型杂环化合物
其中X为-CR1R2-,Y为氧、硫或-NR3-,其中R1、R2和R3可以相同或不同,各自为氢或最多4个碳原子的烷基;或X为氧、硫或-NH-,Y为-CH2-;其中R4和R5可以相同或不同,各自为氢、氰基、硝基、氨基或羟基或最多4个碳原子的烷硫基,或具有权利要求1中定义的各种其它含义,但R4和R5不能都是氢;或其中 R4 和 R5 连接在一起,从而与苯环 A 形成权利要求 1 所定义的苯杂环;其中苯环 A 可任选带有一个或多个进一步的取代基;或其盐(如适用)。
这些化合物具有强心特性,其中一些还具有外周血管扩张特性,可用于治疗急性或慢性心力衰竭。其中具有代表性的化合物是 N,N-二甲基-p-(5,6-二氢-5-氧代-4H-1,3,4-噻二嗪-2-基)苯甲酰胺。此外,还公开了这些化合物的生产工艺以及含有这些化合物的药物组合物。