作者:Philippe Cotelle、Nicole Cotelle、Elisabeth Teissier、Hervé Vezin
DOI:10.1016/s0968-0896(02)00446-7
日期:2003.3
l)-2-hydroxyfurane-2-one 1 was prepared by an acidic dimerisation of 4-hydroxyphenylpyruvic acid and some of its antioxidant and spectroscopic properties have been measured and compared to that of ascorbic acid. 1 is as good an antioxidant as ascorbic acid in the DPPH (2,2-diphenyl-1-picryl hydrazyl radical) test and the inhibition of hydroxyl radical and a powerful inhibitor of the Cu(2+) or AAPH
通过4-羟基苯基丙酮酸的酸性二聚反应制得4-(4-羟基苯基)-5-(4-羟基苯基甲基)-2-羟基呋喃-2-酮1,并测量了部分抗氧化剂和光谱性质,并与之进行了比较。抗坏血酸。1在DPPH(2,2-二苯基-1-picryl肼基自由基)测试中具有与抗坏血酸一样好的抗氧化剂,并且对羟基自由基的抑制作用以及Cu(2+)或AAPH(2,2' -偶氮二-(2-ami基丙烷)二盐酸盐)诱导人LDL的氧化。图1给出了稳定的自由基,其特征在于其ESR谱类似于抗坏血酸,但浓度较低,并且对氮氧化物具有不同的反应性。理论计算使我们能够提出由1形成的基的结构