Synthesis of Novel 3,7-Substituted-2-(3‘,4‘-dihydroxyphenyl)flavones with Improved Antioxidant Activity
作者:Frédérique A. A. van Acker、Jos A. Hageman、Guido R. M. M. Haenen、Wim J. F. van der Vijgh、Aalt Bast、Wiro M. P. B. Menge
DOI:10.1021/jm000951n
日期:2000.10.1
A series of 3,7-disubstituted-2-(3',4'-dihydroxyphenyl)flavones was synthesized as potential cardioprotective agents in doxorubicin antitumor therapy. The influence of substituents on the 3 and 7 positions of the flavone nucleus on radical scavenging and antioxidant properties was explored to improve the antioxidant activity of our lead compound monoHER. In the TEAC assay most compounds had a similar
合成了一系列3,7-二取代-2-(3',4'-二羟基苯基)黄酮作为阿霉素抗肿瘤治疗中潜在的心脏保护剂。探索了取代基对黄酮核的3和7位上自由基清除和抗氧化性能的影响,以改善铅化合物monoHER的抗氧化活性。在TEAC分析中,大多数化合物具有相似的效价(是trolox的效价的3.5-5倍),但在LPO分析中,IC(50)值在0.2到37 microM之间。通常,在LPO分析中,3-取代的黄酮(9a-j)是最有效的化合物。羟基的数目不是抗氧化剂活性的唯一先决条件。类黄酮的环A取代对于高活性不是必需的,但是7-OH基团的存在显着改变了抗氧化活性。