부산대학교 도서관

the N-oxide forms, the pharmaceutically acceptable addition salts and the stereochemically isomeric forms thereof, wherein X represents C or N; Y represents C or N; L represents a methyl or a direct bond; Z1 represents a direct bond, C1-2alkyl- or a divalent radical of formula —CH2—CH═ (a) or —CH═ (b); Z2 represents a direct bond, C1-2alkyl- or a divalent radical of formula —CH2—CH═ (a) or —CH═ (b); R1 represents hydrogen, halo, cyano, amino, phenyl, hydroxy, C1-4alkyloxycarbonyl, hydroxycarbonyl, NR3R4 or C1-4alkyl optionally substituted with one or more substituents selected from hydroxycarbonyl, phenyl, C1-4alkyloxy or NR5R6 or R1 represents C1-4alkyloxy- optionally substituted with one or more substituents selected from hydroxycarbonyl, phenyl, C1-4alkyloxy or NR7R8; R2 represents hydrogen, halo, C1-4alkyl or C1-4alkyloxy-; R3 and R4 each independently represent hydrogen, C1-4alkyl or C1-4alkylcarbonyl-; R5 and R6 each independently represent hydrogen, C1-4alkyl or C1-4alkylcarbonyl-; R7 and R8 each independently represent hydrogen, C1-4alkyl or C1-4alkylcarbonyl-; A represents phenyl or a monocyclic heterocycle selected from the group consisting of thiophenyl, furanyl, oxazolyl, thiazolyl, imidazolyl, isoxazolyl, isothiazolyl, pyrridinyl, pyridazinyl, pyrimidinyl and piperazinyl. [chemical expression included]