Structure-based design of 2-arylamino-4-cyclohexylmethoxy-5-nitroso-6-aminopyrimidine inhibitors of cyclin-dependent kinase 2
作者:Francesco Marchetti、Kerry L. Sayle、Johanne Bentley、William Clegg、Nicola J. Curtin、Jane A. Endicott、Bernard T. Golding、Roger J. Griffin、Karen Haggerty、Ross W. Harrington、Veronique Mesguiche、David R. Newell、Martin E. M. Noble、Rachel J. Parsons、David J. Pratt、Lan Z. Wang、Ian R. Hardcastle
DOI:10.1039/b703241b
日期:——
An efficient synthesis of 2-substituted O4-cyclohexylmethyl-5-nitroso-6-aminopyrimidines from 6-amino-2-mercaptopyrimidin-4-ol has been developed and used to prepare a range of derivatives for evaluation as inhibitors of cyclin-dependent kinase 2 (CDK2). The structure–activity relationships (SARs) are similar to those observed for the corresponding O6-cyclohexylmethoxypurine series with the 2-arylsulfonamide and 2-arylcarboxamide derivatives showing excellent potency. Two compounds, 4-(6-amino-4-cyclohexylmethoxy-5-nitrosopyrimidin-2-ylamino)-N-(2-hydroxyethyl)benzenesulfonamide (7q) and 4-(6-amino-4-cyclohexylmethoxy-5-nitrosopyrimidin-2-ylamino)-N-(2,3-dihydroxypropyl)benzenesulfonamide (7s), were the most potent with IC50 values of 0.7 ± 0.1 and 0.8 ± 0.0 nM against CDK2, respectively. The SARs determined in this study are discussed with reference to the crystal structure of 4-(6-amino-4-cyclohexylmethoxy-5-nitrosopyrimidin-2-ylamino)-N-(2,3-dihydroxypropyl)benzenesulfonamide (7j) bound to phosphorylated CDK2/cyclin A.
我们开发了一种从 6-氨基-2-巯基嘧啶-4-醇高效合成 2-取代 O4-环己基甲基-5-亚硝基-6-氨基嘧啶的方法,并将其用于制备一系列衍生物,以评估其作为细胞周期蛋白依赖性激酶 2(CDK2)抑制剂的效果。其结构-活性关系(SAR)与相应的 O6-环己基甲氧基嘌呤系列相似,其中 2-芳基磺酰胺和 2-芳基甲酰胺衍生物显示出卓越的效力。其中 4-(6-氨基-4-环己基甲氧基-5-亚硝基嘧啶-2-基氨基)-N-(2-羟乙基)苯磺酰胺(7q)和 4-(6-氨基-4-环己基甲氧基-5-亚硝基嘧啶-2-基氨基)-N-(2,3-二羟基丙基)苯磺酰胺(7s)这两种化合物的药效最强,IC50 值分别为 0.对 CDK2 的 IC50 值分别为 0.7 ± 0.1 和 0.8 ± 0.0 nM。本研究中确定的 SARs 参照了与磷酸化 CDK2/cyclin A 结合的 4-(6-氨基-4-环己基甲氧基-5-亚硝基嘧啶-2-基氨基)-N-(2,3-二羟基丙基)苯磺酰胺(7j)的晶体结构进行了讨论。