BENZOPYRAN DERIVATIVES

摘要

The invention relates to novel benzopyran derivatives of general formula (I) possessing pharmacological activity, as well as to pharmaceutical compositions containing the compounds of general formula (I) and process for the preparation thereof. In general formula (I) R1 stands for a C1-6alkyloxy, alkenyloxy, alkynyloxy, cycloalkyloxy, aryloxy, aralkyloxy, hydroxy, nitro, cyano, formyl, C1-6acyl or C1-6alkylcyano group or a halo atom, R2 stands for a C1-6alkyloxy, alkenyloxy, alkynyloxy, cycloalkyloxy, aryloxy, aralkyloxy or hydroxyl group, R1 and R2 together stand for alkylenedioxy, and R3 and R4 stand for a C1-6alkyl group.