Effects of Functional Groups and Sugar Composition of Quercetin Derivatives on Their Radical Scavenging Properties
作者:Komei Kato、Masayuki Ninomiya、Kaori Tanaka、Mamoru Koketsu
DOI:10.1021/acs.jnatprod.6b00274
日期:2016.7.22
biological actions. The aim of this study was to investigate the structure–activity relationships of quercetin derivatives, with a focus on the influence of functional groups and sugar composition on their antioxidant capacity. A series of quercetin derivatives were therefore prepared and assessed for their DPPH radical scavenging properties. Isoquercetin O-gallates were more potent radical scavengers
槲皮素衍生物广泛存在于植物界,并表现出各种生物学作用。这项研究的目的是研究槲皮素衍生物的结构-活性关系,重点是官能团和糖成分对其抗氧化能力的影响。因此,制备了一系列槲皮素衍生物,并评估了它们的DPPH自由基清除性能。异槲皮素O-加仑酸酯比槲皮素更有效的自由基清除剂。系统分析强调了异槲皮素O-没食子酸酯中羟基取代基的分布对其效能的重要性。