The present invention provides novel 4-aryl-3-aminoquinolin-2-one derivatives having the general formula ##STR1## wherein R, R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5 and R.sup.6 are as defined herein, or a non-toxic pharmaceutically acceptable salt thereof which are modulators of the large conductance calcium-activated K.sup.+ channels and are useful in the treatment of disorders which are responsive to the opening of the potassium channels.
                            本发明提供了一种新型4-芳基-
3-氨基喹啉-2-酮衍
生物,其具有通式##STR1##其中R、R.sup.1、R.sup.2、R.sup.3、R.sup.4、R.sup.5和R.sup.6如本文所定义,或其无毒药学上可接受的盐,它们是大电导
钙激活K.sup.+通道的调节剂,可用于治疗对
钾通道开放有反应的疾病。