A compound represented by the following formula (I) is used as a xanthine oxidase inhibitor: in which R
1
is phenyl or pyridyl each optionally having, as a substituent, C
1-8
alkyl, C
1-8
haloalkyl, C
1-8
alkoxy, carboxyl, halogeno, hydroxyl, nitro, cyano, amino, etc.; R
2
is cyano, nitro, etc.; X is oxygen, sulfur, etc.; and Y is sulfur, NH, etc.
以下式子(I)所代表的化合物被用作
黄嘌呤氧化酶
抑制剂:
其中,R1为苯基或
吡啶基,每个基团都可以选择性地具有C1-8烷基,C1-8卤代烷基,C1-8烷氧基,羧基,卤素,羟基,硝基,
氰基,
氨基等取代基;R2为
氰基,硝基等;X为氧,
硫等;Y为
硫,NH等。