| 摘要 |
A compound of the formula <IMAGE> in which R1 is hydrogen, halo, C1-4 alkyl, C1-4 alkoxy, nitrile, optionally protected carboxy, optionally protected tetrazolyl, trihalomethyl, hydroxy-C1-4 alkyl, aldehydo, -CH2Z, -CH=CH-Z or -CH2CH2Z where Z is optionally protected carboxy or optionally protected tetrazolyl; R2 is halo, nitrile, an optionally protected acid group or -CONR7R8 where R7 and R8 are each hydrogen or C1-4 alkyl; R3 and R4 are each hydrogen, C1-4 alkyl, optionally substituted phenyl, or C1-4 alkyl substituted by -CONR7R8 or an optionally protected acid group; R5 is <IMAGE> <IMAGE> where W is -CH=CH-, -CH=N-, -N=CH-, -O- or -S-, R9 is hydrogen, halo, C1-4 alkyl, C1-4 alkoxy or trihalomethyl, and R10 is hydrogen, C1-4 alkyl, C2-6 alkenyl, C3-6 cycloalkyl or C1-4 alkyl-C3-6 cycloalkyl; R6 is hydrogen or C1-4 alkyl; X is -O-(CH2)nCR11R12, -CR11R12-, -CR11R12.(CH2)n.CR13R14- or -CR11=CR12- where R11, R12, R13 and R14 are each hydrogen or C1-4 alkyl, and n is 0, 1 or 2; and Y is -O-CR15R16-, -CR15=CR16- or -CR15 R16.CR17R18- where R15, R16, R17 and R18 are each hydrogen or C 1-4 alkyl; or a salt thereof. The compounds in unprotected form are active as leukotriene antagonists.
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