申请人:SS Pharmaceutical Co., Ltd.
公开号:US05789419A1
公开(公告)日:1998-08-04
This invention relates to a 4-quinolinone derivative represented by the following general formula (1): ##STR1## wherein R.sup.1 and R.sup.2 mean individually H, halogen, cyano, or lower alkyl, lower alkylsulfonyl, lower alkylsulfinyl, lower alkylthio or lower alkoxy which may be substituted by halogen, or phenylsulfonyl, phenylsulfinyl or phenylthio which may have a substituent; and R.sup.3 and R.sup.4 denote individually H, lower alkyl or cycloalkyl which may be substituted by halogen, or pyridyl, furanyl or phenyl which may have a substituent, or R.sup.3 and R.sup.4 may form a 4-, 5- or 6-membered heterocyclic ring, or a salt thereof, and an intermediate useful for the preparation thereof, and besides a medicinal composition comprising this compound as an active ingredient. The compound (1) or the salt thereof has an excellent potassium channel-activating effect and is useful as, for example, a prophylactic and therapeutic agent for diseases of circulatory and bronchial systems.
这项发明涉及一种由以下一般式(1)表示的4-喹啉酮衍生物:其中R.sup.1和R.sup.2分别表示H、卤素、氰基或较低的烷基、较低的烷基磺酰基、较低的烷基亚砜基、较低的烷基硫基或较低的烷氧基,这些基团可能被卤素取代,或苯基磺酰基、苯基亚砜基或苯基硫基,这些基团可能带有取代基;R.sup.3和R.sup.4分别表示H、较低的烷基或环烷基,这些基团可能被卤素取代,或吡啶基、呋喃基或苯基,这些基团可能带有取代基,或R.sup.3和R.sup.4可以形成4-、5-或6-成员杂环,或其盐,以及用于其制备的中间体,以及包含该化合物作为活性成分的药物组合物。该化合物(1)或其盐具有出色的钾通道激活作用,并可用作循环和支气管系统疾病的预防和治疗药物。