A series of novel tricyclic matrinic derivatives with 11-adamantyl substitution were designed, synthesized, and evaluated for their activities against Influenza A H3N2 virus, based on the privileged structure strategy. Structure-activity relationship (SAR) analysis indicated that the introduction of an 11-adamantyl might be helpful for the potency. Among them, compounds 9f and 9j exhibited the promising anti-H3N2 activities with IC50 values of 7.2 μM and 10.2 μM, respectively, better than that of lead 1. Their activities were further confirmed at the protein level. Moreover, compound 9f displayed a high pharmacokinetic (PK) stability profile in whole blood and a safety profile in vivo. In primary mechanism, compound 9f could inhibit the virus replication cycle at early stage by targeting M2 protein, consistent with that of the parent amantadine. This study provided powerful information for further strategic optimization to develop these compounds into a new class of anti-influenza agents.
一系列新颖的
三环马特林衍
生物以11-脱氢莽
固醇取代设计、合成并评估其对
H3N2型流感病毒活性的影响,基于特权结构策略。结构活性关系(
SAR)分析表明,引入11-脱氢莽
固醇可能有助于增强效力。其中,化合物9f和9j表现出良好的抗 活性,IC50值分别为7.2μM和10.2μM,优于引物1。它们的活性在蛋白
水平进一步得到验证。此外,化合物9f在全血中显示出高的药代动力学(PK)稳定性和体内安全性。在主要机制方面,化合物9f可以通过靶向M2蛋白在早期阶段抑制病毒复制周期,与母体阿曼替丁的作用保持一致。这项研究为进一步战略优化提供了强有力的信息,以将这些化合物开发为一类新的抗流感药物。