5-Substituted (1-Thiolan-2-yl)cytosines as Inhibitors of<i>A. aeolicus</i>and<i>E. coli</i>IspE Kinases: Very Different Affinities to Similar Substrate-Binding Sites
作者:Andri P. Schütz、Sebastian Locher、Bruno Bernet、Boris Illarionov、Markus Fischer、Adelbert Bacher、François Diederich
DOI:10.1002/ejoc.201201454
日期:2013.2
pathway is the kinase IspE, and we report here the development and biological evaluation of new ligands for this enzyme from Escherichia coli and Aquifex aeolicus species as model systems for the pathogenic enzymes. The study focuses on analysis of the methylerythritol pocket of the 4-diphosphocytidyl-2-C-methyl-D-erythritol binding site. A series of 5-substituted 1-(thiolan-2-yl)cytosines with increasingly
用于类异戊二烯生物合成的非甲羟戊酸途径的酶是开发用于治疗重要传染病的选择性药物的潜在新靶点。该途径被主要的人类病原体使用,例如恶性疟原虫和结核分枝杆菌,但人类不使用。该途径中的第四种酶是激酶 IspE,我们在此报告了来自大肠杆菌和 Aquifex aeolicus 物种的这种酶的新配体的开发和生物学评估,作为致病酶的模型系统。该研究的重点是分析 4-diphosphocytidyl-2-C-methyl-D-erythritol 结合位点的甲基赤藓糖醇口袋。合成了一系列具有越来越多极性取代基的 5-取代的 1-(硫戊环-2-基)胞嘧啶,选择该子袋中可能的水替代品以及配体的高水溶性。体外研究显示对大肠杆菌 IspE 的 IC50 值在微摩尔范围内,但出人意料的是,在生物测试的测量范围内对 A.aeolicus IspE 没有抑制作用。