摘要
A novel class of thioflavone and flavonoid derivatives has been prepared and their antiviral activities against enterovirus 71(EV71)and the coxsackievirus B3(CVB3)and B6(CVB6)were evaluated.Compounds 7d and 9b showed potent antiviral activities against EV71 with ICso values of 8.27 and 5.48μM,respectively.Compound 7f,which has been synthesized for the first time in this work,showed the highest level of inhibitory activity against both CVB3 and CVB6 with an ICso value of 0.62 and 0.87μM.Compounds 4b,7a,9c and 9e also showed strong inhibitory activities against both the CVB3 and CV B6 at low concentrations(IC_(50)=1.42-7.15μM),whereas compounds 4d,7c,7e and 7g showed strong activity against CVB6(IC_(50)=2.91-3.77μM)together with low levels of activity against CVB3.Compound 7d exhibited stronger inhibitory activity against CVB3(IC_(50)=6.44μM)thaln CVB6(IC_(50)>8.29μM).The thioflavone derivatives 7a,7c,7d,7e,7f and 7g,represent a new class of lead compounds for the development of novel antiviral agents.
基金
This work was supported by the National Science and Technology Major Special Project for Major New Drugs Innovation(Item Number:2012ZX09102-101-001).
