| abstract |
(57) [Problem] To have an α7 nicotine receptor agonistic action or an α7 nicotine receptor partial agonistic action, To provide a novel compound useful as a therapeutic or preventive drug for cognitive dysfunction, attention deficit hyperactivity disorder, anxiety, depression, schizophrenia, epilepsy, pain, Tourette's syndrome, Parkinson's disease, Huntington's disease and the like. SOLUTION: General formula (I) (In the formula, the definition of each symbol is as described in the specification.) Or an optical isomer or a pharmaceutically acceptable salt thereof. |