alpha-Tocopurple, an Oxidation Product of alpha-Tocopherol

被引:41
作者
Frampton, Vernon L. [1 ]
Skinner, W. A.
Cambour, Paris
Bailey, Philip S.
机构
[1] Stanford Res Inst, Dept Chem, Menlo Pk, CA USA
[2] Univ Texas, Basic Cotton Res Lab, Austin, TX 78712 USA
[3] Univ Texas, Dept Chem, Austin, TX 78712 USA
关键词
D O I
10.1021/ja01502a046
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
alpha-Tocopurple, an oxidation product of a-tocopherol (vitamin E), has been isolated and its structure proved to be 2,7-dimethyl-6-hydroxy-2-(4,8,12-trimethyltridecyl)-5,8-chromanquinone (111). The three isomeric tetramethyl-beta hydroxychromans (VII, IX, X) have been synthesized and obtained as analytically pure solids. Oxidation of 2,2,7,8-tetramethyl-6-hydroxychroman (VI I) and of 2,2,5,7-tetramethyl-6-hydroxychroman (IX) with ferric chloride in methanol yielded the same hydroxyquinone (XII), thereby proving its structure.
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页码:4632 / 4634
页数:3
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