The flavan-4-ols (3-deoxyflavonoids) are flavone-derived alcohols and a family of flavonoids. Flavan-4-ols are colorless precursor compounds that polymerize to form red phlobaphene pigments.Styles, E. D., & Ceska, O. (1977). The genetic control of flavonoid synthesis in maize. Canadian Journal of Genetics and Cytology, 19(2), 289–302. They can be found in the sorghum. Glycosides (abacopterins A, B, C and D, together with triphyllin A and 6,8-dimethyl-7-hydroxy-4‘-methoxyanthocyanidin-5-O-β-d-glucopyranoside) can be isolated from a methanol extract of the rhizomes of Abacopteris penangiana.
Known flavan-4-ols Apiforol Luteoforol
Metabolism Flavanone 4-reductase is an enzyme that uses (2S)-flavan-4-ol and NADP+ to produce (2S)-flavanone, NADPH, and H+.
Spectral data These compounds have absorption maxima of 564 nm.
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