PROBLEM TO BE SOLVED: To provide a therapeutic drug and/or prophylactic drug of diabetes or the like having superior activity and safety.SOLUTION: There is provided a compound or medicinally permissible salt thereof represented by general formula (I) [in the formula, A represents a (substituted) phenyl group, (substituted) 4-10 membered heterocyclic group X represents =CH-, =N- Y represents -C(R4)H- R1 represents C1-C3 alkyl group, C3-C10 cycloalkyl group, etc. R2 and R3 each represents hydrogen atom, halogen atom, C1-C6 alkyl group or C1-C6 alkoxy group R4 may connect with a hydrogen atom or C1-C6 alkyl group of R2, etc., to form a 5-6 membered carbon ring or a 5-6 membered heterocyclic ring that contains one oxygen atom and n denotes 1 to 3. When A is nitrogen, a (substituted) 4-10 membered heterocyclic group and R4 is hydrogen atom, R3 represents halogen atom].COPYRIGHT: (C)2013,JPO&INPIT【課題】優れた活性及び安全性を有する糖尿病等の治療薬及び/又は予防薬を提供する。【解決手段】下記一般式(I)[式中、Aは置換可フェニル基、置換可4-10員複素環基、Xは=CH-、=N-、Yは-C(R4)H-、R1はC1-C3アルキル基、C3-C10シクロアルキル基等、R2及びR3は水素原子、ハロゲン原子、C1-C6アルキル基又はC1-C6アルコキシ基、R4は水素原子又はR2のC1-C6アルキル基等と結合して5-6員炭素環若しくは酸素原子を1個含む5-6員複素環を形成していてもよく、nは1~3を示す。ただし、Aが窒素、置換可4-10員複素環基であり、かつR4が水素原子である場合、R3はハロゲン原子を示す。]で表される化合物又はその薬理上許容される塩。【選択図】なし