| abstract |
A compound with a positive allosteric modulating activity of the M1 cholinergic muscarinic receptor, which may be useful as a preventive or therapeutic drug for Alzheimer's disease, schizophrenia, pain, sleep disorder, Parkinson's disease dementia, Lewy body dementia, and Similar. Claim 1: A compound represented by the formula (1) characterized in that R¹ and R² are each, independently, a hydrogen atom or a substituent or a partial structure of formula (2) is optionally a compound of formula (3) (where X¹ and X² are each, independently, CH or N); R³ is a hydrogen atom, an optionally substituted C₁₋₆ alkyl group or an optionally substituted cyclic group and ring A is a ring that is also optionally substituted, excluding 6 - [(2,4-dioxothiazolidin-5-yl) methyl ] -3 - [(4-trifluoromethyl) phenyl) methyl] -1,3-benzoxazin-4-one or one of its salts. |