Inhibition of human thymidine phosphorylase by conformationally constrained pyrimidine nucleoside phosphonic acids and their “open-structure” isosteres
作者:Ivana Košiová、Ondřej Šimák、Natalya Panova、Miloš Buděšínský、Magdalena Petrová、Dominik Rejman、Radek Liboska、Ondřej Páv、Ivan Rosenberg
DOI:10.1016/j.ejmech.2013.12.026
日期:2014.3
A series of conformationally constrained uridine-based nucleoside phosphonic acids containing annealed 1,3-dioxolane and 1,4-dioxane rings and their “open-structure” isosteres were synthesized and evaluated as potential multisubstrate-like inhibitors of the human recombinant thymidine phosphorylase (TP, EC 2.4.2.4) and TP obtained from peripheral blood mononuclear cells (PBMC). From a large set of
合成了一系列构象受约束的基于尿苷的核苷膦酸,其中包含退火的1,3-二氧戊环和1,4-二氧杂环丁烷环及其“开放结构”等位基因,并被评估为人类重组胸苷磷酸化酶的潜在多底物状抑制剂( TP,EC 2.4.2.4)和从外周血单核细胞(PBMC)获得的TP。从大量经过测试的核苷膦酸中,鉴定出几种有效化合物,它们的K i值在0.048–1μM的范围内。所研究化合物的抑制能力在很大程度上取决于膦酸酯部分的构象柔性程度,糖膦酸酯组分的立体化学排列以及嘧啶核碱基5位上的取代基。