Guaiazulene-based phenolic radical scavengers: synthesis, properties, and EPR studies of their reaction with oxygen-centred radicals
作者:Emanuela Franchi、Giovanni Ingrosso、Fabio Marchetti、Calogero Pinzino
DOI:10.1016/s0040-4020(03)00737-3
日期:2003.6
starting from guaiazulene. Compounds 4 react with oxygen-centred radicals exhibiting chromotropic behaviour. The radical scavenging power of these compounds was evaluated by different methods. Compounds 4 are less efficient than some of the most common radical scavengers but show quite selective behaviour towards different oxygen-centred radicals. A correlation is found between the antioxidant activity of
从愈创木烯开始制备了各种带有愈创木烯部分的酚类衍生物4。化合物4与以氧为中心的自由基反应,表现出变色行为。这些化合物的自由基清除能力通过不同的方法进行了评估。化合物4的效率不如某些最常见的自由基清除剂,但对不同的以氧为中心的自由基表现出相当高的选择性。发现化合物4的抗氧化活性与相应的酚O-H键离解能之间存在相关性。EPR和DFT研究阐明了化合物4与以氧为中心的自由基反应的某些方面。