antioxidant, the effects of substituents and side chains on the stability and reactivity of the BO-653 derived radical were studied and compared with the aryloxyl radicals derived from related compounds including α-tocopherol. The rate constants for the reactions of the aryloxyl radicals with themselves, lipid, hydroperoxide, and ascorbate were measured with a stopped-flow electron spin resonance (ESR)
2,3-Dihydro-5-hydroxy-2,2-dipentyl-4,6-di-tert-butylbenzofuran (BO-653) 是一种新型
抗氧化剂,旨在用作抑制体内脂质过氧化的药物。为了了解 BO-653 作为
抗氧化剂的作用动力学,我们研究了取代基和侧链对 BO-653 衍生自由基的稳定性和反应性的影响,并与衍生自相关化合物(包括 α-
生育酚)的芳氧基自由基进行了比较。芳氧基自由基与自身、脂质、氢过氧化物和
抗坏血酸盐反应的速率常数用配备快速混合装置的停流电子自旋共振 (ESR) 光谱仪测量。邻位取代基对双分子衰变反应的速率和与
抗坏血酸的反应产生深远的影响,而对与
亚油酸甲酯和
叔丁基过氧化氢反应的影响要小得多。2-位侧链在有机溶液中没有发挥任何作用,但两个戊基侧链,...