5′-Silylated 3′-1,2,3-triazolyl Thymidine Analogues as Inhibitors of West Nile Virus and Dengue Virus
作者:Sanjeev Kumar V. Vernekar、Li Qiu、Jing Zhang、Jayakanth Kankanala、Hongmin Li、Robert J. Geraghty、Zhengqiang Wang
DOI:10.1021/acs.jmedchem.5b00327
日期:2015.5.14
nucleoside scaffold derived from 3′-azidothymidine (AZT) consistently and selectively inhibiting WNV and DENV at low micromolar concentrations. Further synthesis of various triazole bioisosteres demonstrated clear structure–activity relationships (SARs) in which the antiviral activity against WNV and DENV hinges largely on both the 5′-silyl group and the substituent of 3′-triazole or its bioisosteres
西尼罗河病毒(WNV)和登革热病毒(DENV)是重要的人类病原体,目前尚无针对其的疫苗或特异性抗病毒药。我们在本文中报道了从3'-叠氮胸苷(AZT)衍生的5'-甲硅烷基化核苷支架,在低微摩尔浓度下一致且选择性地抑制WNV和DENV。各种三唑生物甾体的进一步合成显示出清晰的结构-活性关系(SAR),其中对WNV和DENV的抗病毒活性主要取决于5'-甲硅烷基和3'-三唑或其生物甾体的取代基。5'甲硅烷基特别有趣,它可开启针对WNV和DENV的抗病毒活性,同时废除先前报道的针对人类免疫缺陷病毒(HIV-1)的抗病毒效力。通过噬菌斑测定法确认了抗病毒活性,该噬菌斑测定法在选择的化合物存在下观察到病毒滴度降低。分子建模与竞争S-腺苷-1-甲硫氨酸(SAM)结合试验表明,这些化合物可能通过与甲基转移酶(MTase)结合而赋予抗病毒活性。