Patent ID: 6960598

Claim:
A compound of formula I, or a pharmaceutically acceptable salt thereof: wherein: X represents hydrogen or halogen; Y represents a chemical bond, an oxygen atom, or —NH—; Z represents phenyl, pyridinyl, thienyl or thiazolyl, which is unsubstituted or substituted with fluoro, chloro, methoxy, trifluoromethyl, cyano, nitro, amino, formyl, methoxycarbonyl or —CH═NOH; R 1 represents hydrogen, C 1-6 alkyl, halo(C 1-6 )alkyl, dihalo(C 1-6 )alkyl, hydroxy(C 1-6 )alkyl, C 1-6 alkoxy(C 1-6 )alkyl, di(C 1-6 )alkoxy(C 1-6 )akyl, C 2-6 alkenyl, C 2-6 alkynyl, C 3-7 cycloalkyl, C 3-7 cycloalkyl(C 1-6 )alkyl, indanyl, phenyl, phenyl(C 1-6 )alkyl, azetidinyl, pyrrolidinyl, piperidinyl, piperazinyl, morpholinyl, thiomorpholinyl, pyridinyl, quinolinyl, isoquinolinyl, pyridazinyl, pyrimidinyl, pyrazinyl, furyl, benzofuryl, dibenzofuryl, thienyl, benzthienyl, pyrrolyl, indolyl, pyrazolyl, indazolyl, oxazolyl, isoxazolyl, thiazolyl, isothiazolyl, imidazolyl, benzimidazolyl, oxadiazolyl, thiadiazolyl, triazolyl, tetrazolyl, halogen, cyano, trifluoromethyl, nitro, —OR a , —SR a , —SOR a , —SO 2 R a , —SO 2 NR a R b , —NR a R b , —NR a COR b , —NR a CO 2 R b , —COR a , —CO 2 R a , —CONR a R b , —CR a ═NOR b or CR a ═NNHR b , where R a is hydrogen or C 1-6 alkyl, and R b is hydrogen, C 1-6 alkyl, hydroxy(C 1-6 )alkyl or di(C 1-6 )alkylamino(C 1-6 )alkyl.