| 摘要 |
A compound having the formula (see formula I) wherein X is O, S R4, R5, R5 and R7 independently of each other are hydrogen, halogen, or CF 3; R' is hydrogen or NO2; and further a method of treating a disorder or disease of a living animal body, including a human, which is responsive to opening of potassium channels, which comprises administering to a living animal body, including a human, in need thereof an effective amount of a compound as above.
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