Synthesis and Evaluation of <scp>l</scp>-Rhamnose 1C-Phosphonates as Nucleotidylyltransferase Inhibitors
作者:Matthew W. Loranger、Stephanie M. Forget、Nicole E. McCormick、Raymond T. Syvitski、David L. Jakeman
DOI:10.1021/jo401542s
日期:2013.10.4
experiments were performed using water-ligand observed binding via gradient spectroscopy (WaterLOGSY) NMR for known sugar nucleotide substrates and selected phosphonate analogues. IC50 values were measured and Ki values were calculated for inhibitors. New insights were gained into the binding promiscuity of enzymes within the prokaryotic l-rhamnose biosynthetic pathway (Cps2L, RmlB–D) and into the mechanism
我们报道了一系列具有不同氟化程度的1-鼠李糖支架的膦酸酯和酮糖膦酸酯的合成。这些化合物被评估为潜在的α - d-葡萄糖1-磷酸胸苷基转移酶(Cps2L)抑制剂,这是肺炎链球菌1-鼠李糖生物合成中的第一种酶,也是一种新型的抗生素靶标。酶-底物和酶-抑制剂结合实验是使用水-配体通过梯度光谱法(WaterLOGSY)NMR观察到的已知糖核苷酸底物和选定的膦酸酯类似物的结合而进行的。测量IC 50值并测定K i计算抑制剂的值。对原核生物l-鼠李糖生物合成途径(Cps2L,RmlB–D)中酶的结合混杂性以及该系列中最有效的抑制剂l-鼠李糖1C-膦酸酯的抑制机理有了新的认识。