| 摘要 |
A cyanoiminoquinoxaline derivative of the formula (II) is useful as a preventive or therapeutic agent for diseases due to hyperexcitation of glutamate receptors. <CHEM> (wherein, X and Y each is independently O or NCN, provided that at least one of X and Y is NCN; R<1>, R<2>, R<3>, and R<4> each is independently hydrogen, halogen, nitro, optionally substituted heterocyclic group etc.; R<5> is hydrogen etc.; R<1> and R<2>, R<2> and R<3>, R<3> and R<4>, and R<4> and R<5>, each taken together with the adjacent atoms may form a carbocycle which may be substituted or may contain a heteroatom(s).) |
