| 摘要 |
Benzopyran derivatives of the formula: (wherein, X represents an alkyl group, alkoxy group, etc., R1 independently represents an alkyl group, alkoxy group, etc. R2 to R7 independently represents a hydrogen atom, alkyl group, etc., R8 is an alkyl group, aryl group, etc., R9 is a hydrogen atom or lower alkyl group, etc., m is an integer of 0 to 3, n is an integer of 0 to 3, m and n together are an integer of not more than 3, and O is 0 or 1), pharmacologically acceptable acid adducts of the same, processes of production thereof, and drugs containing the same. |
