Design and synthesis of coumarin-3-acylamino derivatives to scavenge radicals and to protect DNA
作者:Yang Yang、Qing-Wen Liu、Ye Shi、Zhi-Guang Song、Ying-Hua Jin、Zai-Qun Liu
DOI:10.1016/j.ejmech.2014.07.009
日期:2014.9
study, a series of coumarin-3-acylamino derivatives containing phenethylamine moiety or tyramine moiety were synthesized and their antioxidant activities were evaluated by Cu2+/glutathione(GSH)-, OH- and 2,2′-azobis(2-amidinopropane hydrochloride)(AAPH)-induced oxidation of DNA. It was found that both hydroxyl and ortho-methoxy groups at A ring, hydroxyl group at B ring and peptide bond can enhance the
在这项研究中,合成了一系列包含苯乙胺部分或酪胺部分的香豆素-3-酰基氨基衍生物,并通过Cu 2+ /谷胱甘肽(GSH)-,OH-和2,2'-偶氮二(2- )评估了它们的抗氧化活性。mid胺丙烷盐酸盐(AAPH)诱导的DNA氧化。发现A环上的羟基和邻甲氧基,B环上的羟基和肽键都可以增强香豆素-3-酰基氨基衍生物保护DNA免受OH-和AAPH诱导的氧化的能力。此外,这些香豆素-3-酰基氨基衍生物被用于清除2,2′-叠氮基双(3-乙基苯并噻唑啉-6-磺酸盐)阳离子基团(ABTS +)。我们发现酪胺部分,羟基和邻位-甲氧基是增强抗氧化剂猝灭ABTS +活性的关键基团。因此,与含有羟基和邻甲氧基的香豆素-3-羧酸连接的酪胺表现出强大的抗氧化能力。