Benzimidazole derivatives their preparation and use

摘要

A compound having the formula wherein X is O, S R<4>, R<5>, R<6> and R<7> independently of each other are hydrogen, halogen, or CF3; 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.