| 摘要 |
PROBLEM TO BE SOLVED: To provide an improving drug for behavioral symptoms and/or mental symptoms of dementia.SOLUTION: The invention provides an improving drug for behavioral symptoms and/or mental symptoms of dementia containing compounds of the following formula or pharmacologically acceptable salts thereof as active ingredients. [Ris a C1-C3 alkyl group, etc.; Ris a C1-C3 alkoxy, C1-C3 alkyl group, etc.; Ris a C1-C6 alkyl group, etc.; Rand Rare C1-C6 alkyl group which may be substituted by one substituent selected from a hydrogen atom and substituent group α, or (azetidine-1-yl) carbonyl group which may be substituted by one substituent selected from substituent group α; the substituent group α consists of a hydroxy group, C1-C6 alkoxy group, and hydroxypyrrolidine group, etc.; and provided that at least one of the Rand Ris hydrogen atom.]SELECTED DRAWING: None |
