申请人:Merck & Co., Inc.
公开号:EP0153746A2
公开(公告)日:1985-09-04
Novel compounds of structural formula:
and a pharmaceutically acceptable salt thereof are disclosed wherein R is
R' and R2 are independently
1) hydrogen,
2) C1-8alkyl, either straight or branched chain,
3) carbocyclic aryl either unsubstituted or substituted with 1 to 3 substituents selected from:
a) halo,
b) c1-3alkoxy, or
C) C1-3alkyl;
4) heterocyclic aryl of 5 or 6 members, at least 4 of which are carbon atoms and the hetero atoms are O, N or S;
R3 is 1) hydrogen,
2) halo,
3) C1-8alkyl, either straight or branched chain; and R4 is 1) C1-8alkyl, either straight or branched chain,
2) C1-8cycloalkyl,
3) aryl-C1-4alkyl, wherein the C1-4alkyl moiety is straight or branched chain, and the aryl moiety is phenyl or naphthyl, either unsubstituted or substituted with 1 or 2 substituents.
Those compounds exhibit cardioselective β-adrenergic blocking activity, with a direct relaxing effect on the β2- adrenergic receptors and are useful as antihypertensive, cardioprotective, antiarrhythmic and, antianginal agents.
公开了结构式为
及其药学上可接受的盐,其中 R 是
R' 和 R2 分别独立
1)氢
2) C1-8 烷基,可为直链或支链
3)碳环芳基,可以是未取代的,也可以是被 1 至 3 个取代基取代的,这些取代基选自
a) 卤
b) C1-3 烷氧基,或
C)C1-3 烷基;
4) 5 或 6 个成员的杂环芳基,其中至少 4 个为碳原子,杂原子为 O、N 或 S;
R3 是 1) 氢、
2)卤素、
3) C1-8 烷基,直链或支链均可;以及 R4 是 1) C1-8 烷基,直链或支链均可、
2) C1-8 环烷基、
3)芳基-C1-4烷基,其中 C1-4 烷基为直链或支链,芳基为苯基或萘基,可以是未取代的,也可以是被 1 或 2 个取代基取代的。
这些化合物具有心脏选择性β-肾上腺素能阻断活性,对β2-肾上腺素能受体有直接松弛作用,可用作降压药、心脏保护剂、抗心律失常药和抗心绞痛药。