| abstract |
[Objective] Schizophrenia, Alzheimer's disease, cognitive impairment, dementia, anxiety disorder (generalized anxiety disorder, panic disorder, obsessive compulsive disorder, social anxiety disorder, post-traumatic stress disorder, specific It is to provide a novel compound or a salt thereof useful for prevention or treatment of diseases such as phobia, acute stress disorder, etc.), depression, drug dependence, convulsions, tremor, and sleep disorder. The formula [I] Or a pharmaceutically acceptable salt thereof or a hydrate thereof. [Selection figure] None |