Pyrazole derivatives of formula (I):
wherein R' is hydrogen or methyl; Ar is pyridyl, thienyl, or optionally substituted phenyl; X is NH2, H, OH, halogen or C1-3 alkyl; and R is OH, OM, O-alk, NH2, NH-alk, N(alk)2 or N-alken-N-(alk)2; wherein alk is C1-5 alkyl; alken is (CH2)2 or (CH2)3 and M is a non-toxic cation; are useful in lowering blood urate levels in mammals.
式 (I) 的
吡唑衍
生物:
其中 R' 是
氢或
甲基;Ar 是
吡啶基、
噻吩基或任选取代的
苯基;X 是 NH2、H、OH、卤素或 C1-3 烷基;R 是 OH、OM、O-alk、NH2、NH-alk、N(alk)2 或 N-
烯-N-(alk)2;其中烷是 C1-5 烷基;
烯是 (
CH2)2 或 ( )3,M 是无毒阳离子。