A\-trans retinol

Vitamin A (trans-retinol) is called an isoprenoid alcohol because it consists, in part, of units of a single five-carbon compound called isoprene ... [Pg.221]

Terpenes contain multiples of five carbons since they are synthesized by linking together isoprene units. The isoprene unit is a branched C, unit. Vitamins A (trans -retinol), D, and E are terpenes. Other terpenes are intermediates in the biosynthesis of cholesterol. [Pg.383]

FIGURE 12.33 Vitamin A trans-retinol) is oxidized to /rawt-retinal and then enzymatically isomerized to cij-retinal. [Pg.533]

Fig. 1. Absorption spectra of a -trans retinol (vitamin A] alcohol, trans 3,4-didehydroretinol (vitamin A2 alcohol, ) in methanol...

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