| abstract |
Compounds of the general formula wherein the radicals R₁ and R₂ are the same or different and are hydrogen or C₁-C₆-alkyl, the radicals R₃ and R₄ are the same or different and are hydrogen, C₁-C₆-alkyl, hydroxy, C₁-C₆-alkoxy, C₂-C₆- Alkanoyloxy, halogen or C₂-C₆-alkanoyl, X represents oxygen, sulfur or the group -NR₅ and R₅ is hydrogen, C₁-C₆-alkyl, C₂-C₆-alkanoyl or benzoyl, m and n each represent the numbers 1, 2 or 3 can assume and the phenyl radical A is unsubstituted or by halogen, nitro, C₁-C₆-alkyl, trifluoromethyl, C₃-C₇-cycloalkyl, hydroxy, C₁-C₆-alkoxy, C₂-C₆-alkanoyloxy, amino, C₁-C₆-alkylamino , Di-C₁-C₆-alkylamino, C₂-C₆-alkanoylamino, CN, carboxy, C₁-C₆-alkoxycarbonyl, phenyl, C₁-C₆-alkylphenyl or trifluoromethylphenyl is substituted, their pyridine-N-oxides and their physiologically acceptable salts, processes for their manufacture and medicaments containing such compounds as active ingredients. |