Patent ID: 7691882

Claim:
A compound represented by the following formula (I), or a salt thereof: wherein R 1 represents a hydrogen atom, a halogen atom, an amino group, R 11 —NH— (wherein R 11 represents a C 1-6 alkyl group, a hydroxy C 1-6 alkyl group, a C 1-6 alkoxy C 1-6 alkyl group, or a C 1-6 alkoxycarbonyl C 1-6 alkyl group), R 12 —(CO)—NH— (wherein R 12 represents a C 1-6 alkyl group or a C 1-6 alkoxy C 1-6 alkyl group), a C 1-6 alkyl group, a hydroxy C 1-6 alkyl group, a cyano C 1-6 alkyl group, a C 1-6 alkoxy group or a C 1-6 alkoxy C 1-6 alkyl group; R 2 represents a hydrogen atom, a C 1-6 alkyl group, an amino group or a di C 1-6 alkylamino group; X is an oxygen atom; Y is a nitrogen atom; ring A represents a benzene ring which may have 1 or 2 halogen atoms, or 1 or 2 C 1-6 alkyl groups; Z represents a single bond, a methylene group, an ethylene group, an oxygen atom, a sulfur atom, —CH 2 O—, —OCH 2 —, —NH—, —CH 2 NH—, —NHCH 2 —, —CH 2 S—, or —SCH 2 —; R 3 represents a pyridine ring which may have 1 or 2 substituents selected from substituent group α: and substituent group α represents the group consisting of a halogen atom, a cyano group, a C 1-6 alkyl group, a C 1-6 alkoxy group, a C 1-6 alkoxycarbonyl group, a C 3-8 cycloalkyl group, a C 2-6 alkenyl group and a C 2-6 alkynyl group R 4 represents a hydrogen atom or a halogen atom; excluding compounds where all of R 1 , R 2 , and R 4 represent the hydrogen atom at the same time when Z represents the single bond or R 3 represents the hydrogen atom.