DIBENZOXAZEPINE N-OXIDE DERIVATIVES AND DRUG CONTAINING THE SAME AS THE ACTIVE INGREDIENT

摘要

Dibenzoxazepine N-oxide derivatives represented by general formula (I), wherein R1 represents hydrogen, carboxy or lower alkoxycarbonyl; R2 represents lower alkyl or phenyl; and R3 and R4 represent each hydrogen, halogeno, amino, nitro, cyano, carboxy, lower alkoxycarbonyl, lower alkoxy, hydroxy, lower alkyl or phenyl; and a preventive or remedy for cerebral ischemia, cardiac diseases, digestive diseases, cancer, ageing or inflammation and a free-radical detector containing the same.