申请人:Otsuka Pharmaceutical Co., Ltd.
公开号:US04468402A1
公开(公告)日:1984-08-28
Novel carbostyril derivatives and their pharmaceutically acceptable salts represented by the formula (I) ##STR1## wherein R.sup.1 is a hydrogen atom, a lower alkyl group, a lower alkenyl group, a lower alkynyl group or a phenyl-lower alkyl group; R.sup.2 and R.sup.3 may be the same or different and each is a lower alkyl group which may have one hydroxy group or one halogen atom as the substituent, or a phenyl-lower alkyl group which may have 1 to 3 substituents selected from the group consisting of a lower alkoxy group and a halogen atom on the phenyl ring, or said phenyl-lower allkyl group may have a lower alkylenedioxy group as the substituent on the phenyl ring; further R.sup.2 and R.sup.3 may form, together with the adjacent nitrogen and without an additional hetero-atom, a 5-or 6 membered saturated heterocyclic ring which may have a lower alkyl group or a phenyl-lower alkyl group as the substituent; the carbon-carbon bond between 3- and 4-positions in the carbostyril skeleton being a single or double bond. The derivatives are useful as the active ingredient in cardiotonic compositions.
新型的羧基苯丙酰衍生物及其药学上可接受的盐,其化学式为(I) ##STR1## 其中R.sup.1是氢原子、低级烷基、低级烯基、低级炔基或苯基-低级烷基;R.sup.2和R.sup.3可以相同也可以不同,每个都是低级烷基,可能具有一个羟基或一个卤素原子作为取代基,或者是苯基-低级烷基,可能在苯环上有1-3个取代基,所选取代基来自低级烷氧基和卤素原子的群,或者所述苯基-低级烷基可能具有低级烷基二氧基基团作为苯环上的取代基;此外,R.sup.2和R.sup.3可以与相邻的氮原子一起形成一个5-或6-成员饱和杂环,该杂环可能具有低级烷基或苯基-低级烷基作为取代基;羧基苯丙酰骨架中3-和4-位置之间的碳-碳键可以是单键或双键。这些衍生物在心脏强效药物组合物中作为活性成分是有用的。