Patent ID: 7557127

Claim:
A compound having the formula (I): wherein R 1 is hydrogen, lower alkyl, lower alkenyl, lower or higher alkynyl, cyclo(lower)alkyl, cyclo(higher)alkyl, cyclo(lower)alkyl(lower)alkyl, cyclo(higher)alkyl(lower)alkyl, cyclo(lower)alkenyl(lower)alkyl, aryl-fused cyclo(lower)alkyl, lower alkoxy, acyl, aryl, ar(lower) alkoxy, ar(lower)alkyl, heteroar(lower)alkyl, amino, heteroaryl, heterocyclyl or heterocyclyl(lower)alkyl, which may be substituted with one or more substituents selected from the group consisting of lower alkyl, halogen, lower alkoxy, amino, hydroxy, cyano, aryl, aryloxy, acyl, cyclo(lower)alkyl, heteroaryl, halo(lower)alkyl and halo(lower)alkoxy, R 2 is hydrogen or lower alkyl, X is pyrrolidinylene or piperidinylene, Y is pyridylene, which may be substituted with one or more substituents selected from the group consisting of halogen and lower alkyl, Z is lower alkenylene, which may be substituted with lower alkyl or halogen, or a salt thereof.