ELECTRON-SPIN RESONANCE STUDIES OF RADICALS OBTAINED BY REACTION OF ALPHA-TOCOPHEROL AND ITS MODEL COMPOUND WITH SUPEROXIDE ION

  • 1 January 1978
    • journal article
    • research article
    • Vol. 531  (1) , 72-78
Abstract
.alpha.-Tocopherol (vitamin E) and its model compound, 6-hydroxy-2,2,5,7,8-pentamethylchroman, were oxidized by .**GRAPHIC**. to yield free radicals which were detected at room temperature by ESR spectroscopy. The ESR spectra of these radicals showed 7 main lines with additional hyperfine structure and have the same g-values at 2.0046. Assignments of the ESR spectra were done on the basis of the spectra of the free radicals of deuterated hydroxypentamethylchroman obtained from the same reaction with .**GRAPHIC**. The radicals observed are chromanoxyls generated by the abstraction of H from the 6-hydroxy group of tocopherols.

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