To improve the biological activities of rupestonic acid, 21 new rupestonic acid fatty ester derivatives (2a-2h) and aromatic ester derivatives (2i-2u) were synthesized and preliminarily evaluated for their anti-influenza activity in vitro by the national center for drug screening of China, using the Oseltamivir and Ribavirin as reference drugs. The results showed that 2l ($IC_50}=0.5\mu}mol/L$) exhibited potent anti-influenza $A_3$ viral activity among the synthesized compounds and was 10-fold more potent than that of the reference drug Oseltamivir ($IC_50}=5.1\mu}mol/L$).
为了提升岩藻甾酸的
生物活性,合成了21种新的岩藻甾酸
脂肪酸酯衍
生物(2a-2h)和芳香酯衍
生物(2i-2u),并由中国国家药物筛选中心初步评估了它们的体外抗流感活性,以
奥司他韦和
利巴韦林作为参考药物。结果显示,2l(
$IC_50}=0.5\mu}mol/L$)在合成的化合物中表现出强大的抗流感A3病毒活性,其效力是参考药物
奥司他韦(
$IC_50}=5.1\mu}mol/L$)的10倍。