abstract |
The present invention provides a positive allosteric modulator activity of cholinergic muscarinic M1 receptors for use in the prevention or treatment of Alzheimer's disease, schizophrenia, pain, sleep disorders, Parkinson's disease, dementia, Lewy Dementia, etc. The present invention relates to a compound represented by formula (I) or a salt thereof. Wherein, each symbol is as described in the specification, or a salt thereof. |