申请人:Schering Aktiengesellschaft
公开号:US04835175A1
公开(公告)日:1989-05-30
Indole derivatives of Formula I ##STR1## wherein R.sub.1 is hydrogen, alkyl of 1-6 carbon atoms, or benzyl R.sub.2 is hydrogen, alkyl of up to 4 carbon atoms, free or esterified hydroxyalkyl of up to 4 carbon atoms, or free, amidated or esterified carboxy or carboxyalkyl, R.sub.3 is hydrogen or alkyl containing 1-6 carbon atoms, R.sub.4 is hydrogen or alkyl containing 1-6 carbon atoms and R.sub.5 is hydrogen, or alkyl, alkenyl, or cycloalkyl, all of which per se contain up to 6 carbon atoms, and all of which are optionally substituted by a free or esterified carboxy group or by an optionally substituted phenyl group; or a polymethylene group of up to 8 carbon atoms linking the first indole residue to a second indole residue of Formula Ia ##STR2## wherein R.sub.1, R.sub.2, R.sub.3, and R.sub.4 are as defined above, and the physiologically acceptable salts thereof with acids and, optionally, their alkali metal and alkaline earth metal salts, possess valuable pharmacological properties, such as stimulating .beta.-receptors and prevention of premature labor, are described.
式I的吲哚衍生物 ##STR1## 其中R.sub.1为氢,1-6个碳原子的烷基或苄基;R.sub.2为氢,不超过4个碳原子的烷基,自由或酯化的不超过4个碳原子的羟基烷基,或自由、酰胺化或酯化的羧基或羧基烷基;R.sub.3为氢或含1-6个碳原子的烷基,R.sub.4为氢或含1-6个碳原子的烷基,R.sub.5为氢、烷基、烯基或环烷基,均含有最多6个碳原子,且均可被自由或酯化的羧基或可选取代的苯基取代;或者是最多8个碳原子的聚亚甲基基团,将第一吲哚残基链接到式Ia的第二吲哚残基中 ##STR2## 其中R.sub.1、R.sub.2、R.sub.3和R.sub.4如上所定义,以及其与酸的生理上可接受的盐和可选的碱金属和碱土金属盐,具有有价值的药理学特性,例如刺激β-受体和预防早产。