There is provided novel substituted 3-phenyl oxindole derivatives of the formula ##STR1## wherein R is hydrogen, hydroxy or fluoro; R.sup.1, R.sup.2, R.sup.3 and R.sup.4 each are independently hydrogen, C.sub.1-4 alkyl, halogen, trifluoromethyl, phenyl, p-methylphenyl or p-trifluoromethylphenyl; or R.sup.1 and R.sup.2, R.sup.2 and R.sup.3 or R.sup.3 and R.sup.4 are joined together to form a benzo fused ring; R.sup.5 is hydrogen or C.sub.1-4 alkyl; and R.sup.6 is chlorine or trifluoromethyl; or a nontoxic pharmaceutically acceptable salt, solvate or hydrate thereof, which are openers of the large-conductance calcium-activated potassium channels and are useful in the treatment of disorders which are responsive to the opening of the potassium channels.
提供了一种新型的3-苯基氧
吲哚衍
生物,其
化学式为##STR1##其中R为氢、羟基或
氟;R1、R2、R3和R4各自独立地为氢、C.sub.1-4烷基、卤素、三
氟甲基、苯基、对甲基苯基或对三
氟甲基苯基;或R1和R2、R2和R3或R3和R4相互连接形成苯并环;R5为氢或C.sub.1-4烷基;R6为
氯或三
氟甲基;或其无毒的药学上可接受的盐、溶剂或
水合物,它们是大电导
钙激活
钾通道的开放剂,并且在治疗对
钾通道开放有反应的疾病方面有用。