TRIAZOLOPYRIDAZINES, METHOD OF THEIR SYNTHESIS, PHARMACEUTICAL COMPOSITIONS BASED ON THEREOF AND METHOD OF TREATMENT Russian patent published in 2000 - IPC

FIELD: organic chemistry, medicine. SUBSTANCE: invention describes the novel triazolopyridazine compound of the formula (I) where R¹ is hydrogen atom or lower alkyl group; R² is C_2-6-alkyl or C₂-C₆-cycloalkyl group; X is oxygen atom; Y is (i) the group of the formula: where R³, R⁴ are hydrogen atom or lower alkyl group; R⁵ and R⁶ each independently means hydrogen atom or lower alkyl group; m and n mean independently the whole number from 0 to 4, or its physiologically acceptable addition salt of the formula (I). Compounds show the excellent antiasthmatic, antiallergic effects and the excellent inhibitory activity with respect to platelet activation factor and eosinophilic chemotaxis. EFFECT: improved method of synthesis and treatment, valuable medicinal properties. 15 cl, 2 tbl, 11 ex