| 摘要 |
Provided is a novel compound represented by formula (I) or a pharmaceutically acceptable salt thereof. The compound or pharmaceutically acceptable salt thereof exhibits orexin (OX) receptor antagonistic action, and thus is useful for the treatment or prevention of medical conditions such as sleeping disorders, depression, anxiety disorders, panic disorders, schizophrenia, drug dependence, Alzheimer's disease, Parkinson's disease, Huntington's chorea, eating disorders, headaches, migraines, pain, digestive organ diseases, epilepsy, inflammation, immunological diseases, endocrine-related diseases, and hypertension. |
