Substituted 3-(N-heterocyclyl)-2,6-diaminopyridines and -N-oxides, preparation thereof and use thereof as drugs

摘要

Compounds of the general formula <IMAGE> where R1 and R2 are identical or different and each is hydrogen, C1-C6-alkyl, R3 and R4 are identical or different and each is hydrogen, C1-C6-alkyl, hydroxyl, C1-C6-alkoxy, C2-C6-alkanoyloxy, halogen or C2-C6-alkanoyl, X is oxygen, sulphur or -NR5 and R5 is hydrogen, C1-C6-alkyl, C2-C6-alkanoyl or benzoyl, m and n are each 1, 2, or 3 and the phenyl radical A is unsubstituted or substituted by halogen, nitro, C1-C6-alkyl, trifluoromethyl, C3-C7-cycloalkyl, hydroxyl, C1-C6-alkoxy, C2-C6-alkanoyloxy, amino, C1-C6-alkylamino, di-C1-C6-alkylamino, C2-C6-alkanoylamino, CN, carboxyl, C1-C6-alkoxycarbonyl, phenyl, C1-C6-alkylphenyl or trifluoromethylphenyl, their pyridine-N-oxides and their physiologically compatible salts, processes for preparing them, and drugs which contain these compounds as active principle.