Patent ID: 7910741

Claim:
A compound represented by formula (I): wherein R 1 represents —SO 2 NR 102 R 103 , —NR 101 SO 2 R 104 or —COOR 105 . R 101 represents a hydrogen atom; R 102 and R 103 each independently represents a hydrogen atom or C1-4 alkyl; R 104 represents C1-4 alkyl; R 105 represents a hydrogen atom or C1-4 alkyl; X represents —O—; Y represents —CH 2 —; ring A represents benzene which may have a substituent(s) of C1-4 alkyl and/or a halogen atom(s); ring B represents pyridine, which may have a substituent(s) of C1-4 alkyl and/or a halogen atom(s) ring D represents a piperidine; R 2 represents wherein the arrow represents a binding position to ring D; R 51 represents (1) C1-6 alkyl which may have a substituent(s) selected from the group consisting of (a) hydroxy, (b) methoxy, (c) cyano, (d) carboxy, (e) a halogen atom(s), (f) methylsulfonylamino, and (g) thienyl, pyrazolyl, tetrahydropyranyl, thiazolyl, isoxazolyl, imidazolyl, tetrazolyl, pyridyl or pyrimidinyl, each of which may have methyl and/or trifluromethyl, (2) C2-10 alkenyl, (3) C2-10 alkynyl, (4) phenyl which may have C1-4 alkyl and/or a halogen atom(s), (5) C7-16 aralkyl which may have a substituent(s) of methyl, a halogen atom(s), hydroxy and/or methoxy, or (6) (C3-8 cycloalkyl)-(C1-4 alkyl)-which may have a substituent(s) of methyl, a halogen atom(s), hydroxy and/or methoxy; R 52 represents (1) C1-6 alkyl which may have a substituent(s) selected from the group consisting of (a) hydroxy, (b) methoxy, (c) carboxy, (d) C3-8 cycloalkyl, (e) phenyl, and (f) oxo, (2) C3-8 cycloalkyl or phenyl, each of which may have a substituent(s) selected from the group consisting of C1-4 alkyl, hydroxy, cyano, oxo, carbamoyl, N-methylaminocarbonyl, carboxy, a halogen atom(s), methoxy, trifluoromethoxy, methylthio, methylsulfonyl, acetylamino, dimethylamino, acetyl, tetrazolyl, trifluoromethyl, and methylsulfonylamino, (3) C3-10 cycloalkenyl, or (4) thienyl, pyrazolyl, tetrahydropyranyl, isoxazolyl, isothiazolyl, thiadiazolyl, piperidinyl, pyridyl, pyrimidinyl, pyridazinyl, quinolyl, indolyl, benzothiazolyl, benzoisothiazolyl, benzotriazolyl, dioxaindanyl or benzodioxanyl, each of which may have a substituent(s) of C1-4 alkyl, hydroxy, oxo, a halogen atom(s), azide and/or trifluoromethyl; and R 53 represents a hydrogen atom, or a salt thereof.