中文摘要：

通过NMR产物分析方法确认α-生育酚与DPPH^.在DMSO中的反应最终产物结构为醌式。此外，对该反应过程的ESR实验证实α-生育酚与DPPH^.反应的计量比为1：2。由此可以进一步推断：α-生育酚与DPPH^.反应的分子机制为两步过程。

英文摘要：

In this paper the reaction product of α-tocopherol and DPPH^. radical in DMSO was analyzed by NMR spectroscopy, and found to have a tetraalkylbenzoquinonoid group. The reactive ratio of α-tocopherol to DPPH^. was confirmed to be 1 ： 2 with ESR spectroscopy. Based on these two results, it is proposed that the reaction pathway of α-tocopherol and DPPH^. has two steps.