Antiviral Activity of 7-Substituted 7-Deazapurine Ribonucleosides, Monophosphate Prodrugs, and Triphoshates against Emerging RNA Viruses
作者:Nemanja Milisavljevic、Eva Konkolová、Jaroslav Kozák、Jan Hodek、Lucia Veselovská、Veronika Sýkorová、Karel Čížek、Radek Pohl、Luděk Eyer、Pavel Svoboda、Daniel Růžek、Jan Weber、Radim Nencka、Evžen Bouřa、Michal Hocek
DOI:10.1021/acsinfecdis.0c00829
日期:2021.2.12
of the RNA chain. 7-Deazaadenosine nucleosides bearing ethynyl or small hetaryl groups at position 7 showed (sub)micromolar antiviral activities but significant cytotoxicity, whereas the nucleosides bearing bulkier heterocycles were still active but less toxic. Unexpectedly, the monophosphate prodrugs were similarly or less active than the corresponding nucleosides in the in vitro antiviral assays,
一系列在7位带有烷基,烯基,炔基,芳基或杂芳基的7-deazaadenine核糖核苷及其5'- O-三磷酸酯和两种单磷酸酯前药(磷酰胺盐和S(酰基硫代乙醇酯)的制备和测试针对选定的RNA病毒(登革热,寨卡病毒,tick传脑炎,西尼罗河和SARS-CoV-2)的抗病毒活性。修饰的三磷酸通过掺入修饰的核苷酸并阻止RNA链的进一步延伸,以微摩尔浓度抑制了病毒RNA依赖性RNA聚合酶。在7位带有乙炔基或较小杂芳基的7-脱氮腺苷核苷显示出(亚)微摩尔抗病毒活性,但具有明显的细胞毒性,而具有较大杂环的核苷仍具有活性,但毒性较低。出乎意料的是,在体外抗病毒测定中,单磷酸前药的活性与相应的核苷相似或更低,尽管bis(S-酰基硫代乙醇)前药14h被转运到Huh7细胞,并有效释放核苷一磷酸。