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.
Formula I中的吲哚衍生物##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,最多4个碳原子的烷基,自由或酯化的最多4个碳原子的羟基烷基,或自由的,酰化的或酯化的羧基或羧基烷基,R.sub.3是氢或含有1-6个碳原子的烷基,R.sub.4是氢或含有1-6个碳原子的烷基,R.sub.5是氢,或烷基,烯基,或环烷基,这些本身包含最多6个碳原子,并且这些都可以选择地被自由或酯化的羧基或通过一个可选择地被取代的苯基团取代;或者是一个最多含有8个碳原子的聚亚甲基基团,将第一个吲哚残基与Formula Ia的第二个吲哚残基连接起来##STR2##其中R.sub.1,R.sub.2,R.sub.3和R.sub.4如上所定义,并且其与酸的生理上可接受的盐,以及可选地其碱金属和碱土金属盐,具有有价值的药理特性,如刺激β-受体和预防早产。