申请人:Otsuka Pharmaceutical Co., Ltd.
公开号:US04454130A1
公开(公告)日:1984-06-12
Novel carbostyril derivatives and their pharmaceutically acceptable salts represented by the formula (1). ##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 form, together with the adjacent nitrogen atom and further with an additional oxygen 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.
新型的羧基喹啉衍生物及其药用盐,由下式(1)所表示。其中R.sup.1为氢原子、较低的烷基基团、较低的烯基基团、较低的炔基基团或苯基-较低的烷基基团,R.sup.2和R.sup.3与相邻的氮原子以及另外一个氧原子一起形成一个5-或6-成员的饱和杂环环,该环可能具有较低的烷基基团或苯基-较低的烷基基团作为取代基;在羧基喹啉骨架的3-和4-位置之间的碳-碳键为单键或双键。这些衍生物可用作心力衰竭组合物中的活性成分。