Abstract: The present invention provides agents for treating or preventing diseases such as mood disorder, anxiety disorder, schizophrenia, Alzheimer's disease, Parkinson's disease, Huntington's chorea, eating disorder, hypertension, gastrointestinal disease, drug addiction, epilepsy, cerebral infarction, cerebral ischemia, cerebral edema, head injury, inflammation, immune-related disease, alopecia, and so forth.

Abstract: The present invention provides novel compounds of formula [I] or pharmaceutically acceptable salts thereof: which are useful in the prevention or treatment of diseases such as schizophrenia, Alzheimer's disease, cognitive impairment, dementia, anxiety disorders (e.g., generalized anxiety disorder, panic disorder, obsessive-compulsive disorder, social anxiety disorder, post-traumatic stress disorder, specific phobias, acute stress disorder), depression, drug dependence, spasm, tremor, pain, Parkinson's disease, attention deficit hyperactivity disorder, bipolar disorder, eating disorder, or sleep disorders, which is based on the glycine uptake-inhibiting action.

Abstract: The present invention provides novel compounds of formula [IA] or pharmaceutically acceptable salts thereof: which are useful in the prevention or treatment of diseases such as schizophrenia, Alzheimer's disease, cognitive impairment, dementia, anxiety disorders (e.g., generalized anxiety disorder, panic disorder, obsessive-compulsive disorder, social anxiety disorder, post-traumatic stress disorder, specific phobias, acute stress disorder), depression, drug dependence, spasm, tremor, pain, Parkinson's disease, attention deficit hyperactivity disorder, bipolar disorder, eating disorder, or sleep disorders, which is based on the glycine uptake-inhibiting action.

Abstract: The present invention provides a 1,2,4-triazolone derivative represented by Formula (1A) having an antagonistic activity on the arginine-vasopressin 1b receptor or a pharmaceutically acceptable salt thereof and provides a pharmaceutical composition comprising the compound or the salt as an active ingredient, in particular, a therapeutic or preventive agent exhibiting favorable pharmacokinetics in a disease such as mood disorder, anxiety disorder, schizophrenia, Alzheimer's disease, Parkinson's disease, Huntington's chorea, eating disorder, hypertension, gastrointestinal disease, drug addiction, epilepsy, cerebral infarction, cerebral ischemia, cerebral edema, head injury, inflammation, immune-related disease, or alopecia.

Abstract: The present invention provides agents for treating or preventing diseases such as mood disorder, anxiety disorder, schizophrenia, Alzheimer's disease, Parkinson's disease, Huntington's chorea, eating disorder, hypertension, gastrointestinal disease, drug addiction, epilepsy, cerebral infarction, cerebral ischemia, cerebral edema, head injury, inflammation, immune-related disease, alopecia.

Abstract: The present invention provides agents for treating or preventing diseases such as mood disorder, anxiety disorder, schizophrenia, Alzheimer's disease, Parkinson's disease, Huntington's chorea, eating disorder, hypertension, gastrointestinal disease, drug addiction, epilepsy, cerebral infarction, cerebral ischemia, cerebral edema, head injury, inflammation, immune-related disease, alopecia, and so forth.

Abstract: The present invention provides a 1,2,4-triazolone derivative represented by Formula (1A) having an antagonistic activity on the arginine-vasopressin 1b receptor or a pharmaceutically acceptable salt thereof and provides a pharmaceutical composition comprising the compound or the salt as an active ingredient, in particular, a therapeutic or preventive agent exhibiting favorable pharmacokinetics in a disease such as mood disorder, anxiety disorder, schizophrenia, Alzheimer's disease, Parkinson's disease, Huntington's chorea, eating disorder, hypertension, gastrointestinal disease, drug addiction, epilepsy, cerebral infarction, cerebral ischemia, cerebral edema, head injury, inflammation, immune-related disease, or alopecia.