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是氢、1-6个碳原子的烷基或苄基,R.sub.2是氢、高达4个碳原子的烷基、自由或酯化的高达4个碳原子的羟基烷基、自由、酰胺化或酯化的羧基或羧基烷基,R.sub.3是氢或含1-6个碳原子的烷基,R.sub.4是氢或含1-6个碳原子的烷基,R.sub.5是氢、烷基、烯基或环烷基,这些基团本身包含高达6个碳原子,并且这些基团可选择由自由或酯化羧基或可选择取代的苯基取代;或高达8个碳原子的聚亚甲基基团将第一吲哚残基与式Ia的第二吲哚残基连接在一起 ##STR2## 其中R.sub.1、R.sub.2、R.sub.3和R.sub.4如上所定义,并且与酸形成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特性,例如刺激β-受体和预防早产。