| 摘要 |
Novel compounds having the ability to inhibit 5-lipoxygenase enzyme and havi ng formula (I) and the pharmaceutically acceptable salts thereof, wherein Ar1 i s a heterocyclic moiety which is selected from imidazolyl, pyrrolyl, pyrazolyl , 1,2,3-triazolyl, 1,2,4-triazolyl, indolyl, indazolyl and benzimidazolyl, whi ch is bonded to X1 through a ring nitrogen atom, and which may be optionally substituted with one or two substituents selected from halo, hydroxy, cyano, amino, C1-4 alkyl and the like; X1 is a direct bond or C1-4 alkylene; Ar2 is phenylene optionally substituted with halo, hydroxy, cyano, amino and the like; X2 is -A-X- or -X-A- wherein A is a direct bond or C1-4 alkylene and X is oxy, thio, sulfinyl or sulfonyl; Ar3 is phenylene, pyridylene, thienylene , furylene, oxazolylene or thiazolylene optionally substituted with one or two substituents selected from halo, hydroxy, cyano, amino, C1-4 alkyl and the like; R1 and R2 are each C1-4 alkyl, or together they form a group of formul a - D1-Z-D2- which together with the carbon atom to which it is attached defines a ring having 3 to 8 atoms, wherein D1 and D2 are C1-4 alkylene and Z is a direct bond or oxy, thio, sulfinyl, sulfonyl, or vinylene, and D1 and D2 may be substituted by C1-3 alkyl; and Y is CONR3R4, CN, C(R3)=N-OR4, COOR3, COR3 orCSNR3R4, wherein R3 and R4 are each H or C1-4 alkyl. These compounds are useful in the treatment or alleviation of inflammatory diseases, allergy and cardiovascular diseases in mammals and as the active ingredient in pharmaceutical compositions for treating such conditions.
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