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|Section2= |Section3= }} (詳細はtocotrienol, a type of vitamin E. 〔Barrie T, Watson RR, Preedy VR, eds. (2013). ''(Tocotrienols: Vitamin E Beyond Tocopherols )'' (2nd ed.). Boca Raton: CRC Press. ISBN 9781439884416.〕 Vitamin E exists in nature in eight forms, each of which consists of a head section joined to either a saturated (phytyl) or an unsaturated (farnesyl) tail. The four compounds with the saturated tails are the tocopherols, and the four compounds with the unsaturated tails are the tocotrienols. There are four unique dihydrocoumarin head sections, distinguished by one of four substitution patterns and designated as α, β, γ, or δ. The ''alpha-'' forms are distinguished by their three substituted methyl groups and the ''delta-'' forms by their one substituted methyl group. The ''beta-'' and ''gamma-'' forms both have two substituted methyl groups, although at different structural positions (5,8-dimethyl and 7,8-dimethyl, respectively), making both ''beta'' / ''gamma'' tocotrienol as well as the ''beta'' / ''gamma'' tocopherol pairs of stereoisomer.〔 ==See also== * Vitamin E * Tocopherol * Tocotrienol * Antioxidants * ''alpha''-Tocotrienol * ''beta''-Tocotrienol * ''delta''-Tocotrienol 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Gamma-Tocotrienol」の詳細全文を読む スポンサード リンク
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