BENZOPYRAN DERIVATIVE, PRODUCTION THEREOF, AND PHARMACEUTICAL PREPARATION CONTAINING THE SAME AS ACTIVE INGREDIENT

摘要

A benzopyran derivative represented by general formula (1), an acid adduct thereof, a process for producing the same, and a pharmaceutical preparation containing the same as the active ingredient. In the said formula, X represents alkyl, alkoxy, etc.; R<1>s represent each independently alkyl, alkoxy, etc.; R<2> to R<7> represent each hydrogen, alkyl, etc.; R<8> represents alkyl, aryl, etc.; R<9> represents hydrogen, lower alkyl, etc.; m and n represent each an integer of 0 to 3 provided that the sum of m and n represents an integer of 3 or less; and o represents 0 or 1.