(EC50 = 0.060 μM), and markedly exceeded (up to 327 times) the antiviral efficacy of ribavirin. Activity was also observed for two influenza A strains, including a virus with the S31N mutant form of M2 proton channel, which is the most prevalent resistance mutation for amantadine. Importantly, the compounds displayed nanomolar activity against RSV and a superior selectivity index, since the ratio of cytotoxic
我们已经确定了一系列的1-芳基-4,6-二
氨基-1,2- dihydrotriazines,结构上与抗疟疾药物
环氯胍,流行性感冒A和B病毒和呼吸道合胞病毒(RSV)的新
抑制剂经由的靶向宿主二氢叶酸还原酶(DHFR)酶。大多数类似物表现出抗B型流感病毒活性在低微摩尔范围内,和最好的化合物(11,13,14和16)甚至达到
扎那米韦的亚微摩尔的效力(
EC 50 = 0.060μM),并且显着超过(高达327倍)
利巴韦林的抗病毒功效。还观察到了两种甲型流感病毒株的活性,包括带有M2质子通道的S31N突变形式的病毒,这是
金刚烷胺最普遍的耐药突变。重要的是,化合物显示针对RSV和优良的选择性指数纳摩尔活性,因为细胞毒性的抗病毒浓度的比率> 10,000的三个最活跃的化合物11,14和16(
EC 50 ~0.008μM),远远超过效能和许可药物
利巴韦林的安全性概况(
EC 50 = 5.8μM,SI> 43)。