A diverse library of 1-phenyl-pyrazole-4-carboxylic acid derivatives were synthesized and evaluated for their inhibitory potency against xanthine oxidoreductase (XOR) in vitro and vivo, and the structure-activity relationship (SAR) analyses were also presented. Approximately half of the target compounds exhibited the inhibitory potency for XOR at the nanomolar level. Compounds 16c, 16d, and 16f emerged as the most potent xanthine oxidoreductase inhibitors with IC₅₀ values of 5.7, 5.7 and 4.2 nM, respectively, in comparison to febuxostat (IC₅₀ of 5.4 nM). Steady-state kinetics measurements indicated that 16c is a mixed-type inhibitor. A computer molecular docking study of 16c bound to XOR was performed to gain an insight into its bind mode and SAR for the series. A potassium oxonate-hypoxanthine-induced hyperuricemia model in mice was chosen to further confirm the hypouricemic effects of 16c and 16f, and the results demonstrated that 16c exhibits similar hypouricemic potency to febuxostat.

合成了多种多样的1-苯基-吡唑-4-羧酸衍生物库，并对其在体外和体内对黄嘌呤氧化还原酶（XOR）的抑制能力进行了评估，并进行了结构-活性关系（SAR）分析。大约一半的目标化合物在纳摩尔水平上表现出对XOR的抑制能力。与非布索坦相比，化合物16c，16d和16f成为最有效的黄嘌呤氧化还原酶抑制剂，IC ₅₀值分别为5.7、5.7和4.2 nM（IC ₅₀为5.4 nM）。稳态动力学测量表明16c是一种混合型抑制剂。进行了与XOR结合的16c的计算机分子对接研究，以深入了解其与该系列的结合模式和SAR。选择了由草酸钾-次黄嘌呤诱导的小鼠高尿酸血症模型，以进一步证实16c和16f的降尿酸作用，结果表明16c表现出与非布索坦相似的降尿酸功效。