Taisho Pharmaceutical Co., Ltd.

Takashi Hashihayata

Norikazu Otake

Yuko Yamauchi

Seiji Masuda

Yohei Matsuda

Kazunari Sakagami

Naoki Miyakoshi

Provided is an amino acid derivative prodrug represented by general formula (I-A) that is a prodrug form of an amino acid derivative which is a group 2 metabotropic glutamate receptor antagonist, or a pharmaceutically acceptable salt thereof. More specifically, provided is an amino acid derivative prodrug represented by general formula (I-A) that is a preventive or therapeutic drug for mood disorders (including depression and bipolar disorder), anxiety disorder, cognitive disorders, developmental disorders, Alzheimer's disease, Parkinson's disease, movement disorders associated with muscular rigidity, sleep disorders, Huntington's chorea, eating disorders, drug dependence, epilepsy, brain infarction, cerebral ischemia, cerebral insufficiency, cerebral edema, spinal cord disorders, head trauma, inflammation and immune-related diseases, and so on. 

Prodrug amino acid derivative

Prodrug of amino acid derivative

Provided are a fluorine-containing amino acid prodrug represented by general formula (I) that makes a fluorine-containing amino acid which is a group 2 metabotropic glutamate receptor agonist into a prodrug, or a pharmaceutically acceptable salt thereof. More specifically, provided is a prodrug that increases the in vivo exposure and enhances the oral absorbability and other mucosal absorbability of a parent compound that acts on group 2 metabotropic glutamate receptors as an agent for the treatment or prevention of diseases in which group 2 metabotropic glutamate receptors are said to be involved, such as: schizophrenia, anxiety disorder and its related diseases, depression, bipolar disorder, epilepsy, developmental disorders, sleep disorders, and other neuropsychiatric diseases; and drug dependence, cognitive disorders, Alzheimer's disease, Huntington's chorea, Parkinson's disease, movement disorders associated with muscular rigidity, cerebral ischemia, cerebral insufficiency, spinal cord disorders, cephalopathy, and other neurological diseases. 

Prodrug of fluorine-containing amino acid

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Tokyo, Japan

Takashi Hashihayata