Antioxidant activity of the new thiosulfinate derivative, S-benzyl phenylmethanethiosulfinate, from Petiveria alliacea L.
作者:Youji Okada、Kaoru Tanaka、Eisuke Sato、Haruo Okajima
DOI:10.1039/b715727d
日期:——
provided evidence that the benzylic hydrogen of BPT is mainly associated with the peroxyl radical scavenging. Moreover, we measured the rate constant for the reaction of BPT with peroxyl radicals derived from cumene and ML in chlorobenzene, and based on these measurements, BPT reacts with these peroxyl radicals with a rate constant of k(inh) = 8.6 x 10(3) and 6.2 x 10(4) M(-1) s(-1), respectively.
使用HPLC详细研究了新的硫代亚磺酸盐衍生物S-苄基苯基甲烷硫代亚磺酸盐(BPT)对异丙苯和亚油酸甲酯(ML)在氯苯中氧化的抗氧化作用。结果表明,在这些氧化条件下,BPT具有明确的诱导期,具有有效的抑制作用,并且发现BPT的化学计量因子(n)(被一个抗氧化剂分子捕获的过氧自由基数量)约为2。然后进行了彻底的调查,旨在阐明BPT的活性结构位点。使用了各种模型化合物,例如二苯基二硫化物,二苄基二硫化物,S-苯基苯硫基亚磺酸盐和S-乙基苯基甲硫基亚磺酸盐,这提供了BPT的苄基氢主要与过氧自由基清除有关的证据。而且,