Patent ID: 8198287

Claim:
A compound of formula (I) or a salt thereof: wherein: Y represents a sulfur atom or an oxygen atom; Z represents a bond; R1 represents a 2, 3 or 4-pyridine ring or a 2, 4 or 5-pyrimidine ring, the ring being optionally substituted by a C 1-6 alkyl group, a C 1-6 alkoxy group or a halogen atom; R2 represents a 4-15 membered heterocyclic group, which is being optionally substituted by 1 to 4 substituents selected from a C 1-6 alkyl group, a halogen atom, a C 1-2 perhalogenated alkyl group, a C 1-6 halogenated alkyl group, a hydroxyl group, a C 1-6 alkoxy group, a C 1-2 perhalogenated alkoxy group, a C 1-6 halogenated alkoxy group, a nitro, a cyano, an amino, a C 1-6 monoalkylamino group, a C 2-12 dialkylamino group, a S—(C 1-6 -alkyl) group, an 4-15 membered heterocyclic group, an aryl group, a O-aryl group and a S-aryl group, the above-mentioned groups being optionally substituted by 1 to 4 substituents selected from a C 1-6 alkyl group, a halogen atom, a (C 1-6 ) alkoxy group, a C(O)O(C 1-6 -alkyl) and a C(O)O(aryl) group; R3 represents a hydrogen atom, a C 1-6 alkyl group or a halogen atom; R4 and R5 represent, each independently, a hydrogen atom, a C 1-6 alkyl group, optionally substituted by 1 to 4 substituents selected from a halogen atom, a phenyl group, a hydroxyl group and a C 1-6 alkoxy group; R6 represents a hydrogen atom, a C 1-6 alkyl group optionally substituted by a halogen atom or a cycloalkyl group, or a halogen atom; R7 represents a hydrogen atom or a C 1-6 alkyl group; n represents 0; m represents 0 to 1; and o represents 0 to 2.