Aryl diketoacid (ADK) is well known for antiviral activity which can be enhanced by introduction of an aromatic arylmethyl substituent. A natural flavonoid quercetin has a 3,5-dihydroxychromone pharmacophore which is in bioisosteric relationship with the 1,3-diketoacid moiety of the ADK. Thus, it was of our interest to test the antiviral activity of the quercetin derivatives with an arylmethyl group attached. In this study, we prepared a series of the 7-O-arylmethylquercetin derivatives with various aromatic substituents and evaluated their antiviral activity against the SARS-associated coronavirus (SARS-CoV, SCV) as well as hepatitis C virus (HCV). Single difference in the aromatic substituent fine-tuned the biological activity of the 7-O-arylmethylquercetin derivatives to result in two different classes of derivatives selectively active against SCV and HCV.
芳基二
酮酸(ADK)以其抗病毒活性而闻名,通过引入芳香苄基可以增强其活性。天然
黄酮类化合物槲皮素具有3,5-二羟基
色原酮药效团,与ADK的1,3-二
酮酸部分在
生物同效关系上相关。因此,我们感兴趣的是测试带有苄基的
槲皮素衍
生物的抗病毒活性。在本研究中,我们合成了一系列具有不同芳香取代基的7-O-苄基
槲皮素衍
生物,并评估了它们对严重急性呼吸综合征相关冠状病毒(
SARS-CoV,SCV)以及丙型肝炎病毒(HCV)的抗病毒活性。芳香取代基的单一差异精细调节了7-O-苄基
槲皮素衍
生物的
生物活性,从而产生了两类对SCV和HCV具有选择性活性的衍
生物。