Discovery of Potent Non-Nucleoside Inhibitors of Dengue Viral RNA-Dependent RNA Polymerase from a Fragment Hit Using Structure-Based Drug Design
作者:Fumiaki Yokokawa、Shahul Nilar、Christian G. Noble、Siew Pheng Lim、Ranga Rao、Stefani Tania、Gang Wang、Gladys Lee、Jürg Hunziker、Ratna Karuna、Ujjini Manjunatha、Pei-Yong Shi、Paul W. Smith
DOI:10.1021/acs.jmedchem.6b00143
日期:2016.4.28
The discovery and optimization of non-nucleoside dengue viral RNA-dependent-RNA polymerase (RdRp) inhibitors are described. An X-ray-based fragment screen of Novartis’ fragment collection resulted in the identification of a biphenyl acetic acid fragment 3, which bound in the palm subdomain of RdRp. Subsequent optimization of the fragment hit 3, relying on structure-based design, resulted in a >1000-fold
描述了非核苷登革热病毒RNA依赖性RNA聚合酶(RdRp)抑制剂的发现和优化。基于X射线的诺华碎片收集片段筛选结果鉴定出联苯乙酸片段3,该片段结合在RdRp的棕榈亚结构域中。依靠基于结构的设计,随后对片段命中3的优化使体外效能提高了> 1000倍,并在基于细胞的测定中获得了对所有四种低微摩尔EC 50血清型的抗登革热活性。主要候选物27与RdRp的棕榈亚结构域中的新的结合口袋相互作用,并针对所有临床相关的登革热血清型发挥有希望的活性。