5.7.8- Trimethyl tocotrienol

S-tocotrienol 3,4-Dihydro-2,8-dimethyl-2- 4, 8, 12 -trimethyl-3, 7, 11 -tridecatrienyl)-2H-1-benzopyran-6-ol ... 

Some years after the isolation of the four tocopherols the four tri-unsaturated analogues, the tocotrienols were discovered. They are 8-methyl, 5,8- and 7,8-dimethyl and 5,7,8-trimethyl derivatives repectively of tocotrienol, 2R-methyl-2-(4, 8, 12-trimethyldeca-3, 7, 11 -trienyl)-6-chromanol. a-Tocotrienol is shown. 

Tocopherols, also known as tocols, are compounds derived from 2-methyl-2-(4,8,12-trimethyl tridecyl)chroman-6-ol, and tocotrienols are compounds derived from... 

Vitamin E is the generic name for molecules with a-tocopherol antioxidant activity, including all tocopherol and tocotrienol derivatives [86], with a similar chromanol structure trimethyl (a-), dimethyl (P- or 7-), and monomethyl (8-) (Figure 6.17). 

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