Flavan-4-ol

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.[1] They can be found in the sorghum.[2] 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.[3]

Flavan-4-ol
Names
IUPAC name
2-Phenylchroman-4-ol
Identifiers
3D model (JSmol)
Properties
C15H14O2
Molar mass 226.275 g·mol−1
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

Known flavan-4-ols

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.[4]

gollark: You didn't have time? Isn't this quite a long challenge thing?
gollark: Also the fact that most stuff, even if it uses DC internally (most things probably do), runs off mains AC and has some sort of built-in/shipped-with-it power supply, and there aren't really common standards for high-powered lower-voltage DC connectors around. Except USB-C, I guess? That goes to 100W.
gollark: I guess it depends on exactly what you do, and the resistance of the wires.
gollark: Which is as far as I know more an issue of low voltages than DC itself, but DC means you can't change the voltage very easily.
gollark: There is the problem that low-voltage DC loses power more quickly over longer distances.

References
  1. Styles and Ceska, 1977
  2. Jambunathan, Ramamurthi; Kherdekar, Milind S. (1991). "Flavan-4-ol concentration in leaf tissues of grain mold susceptible and resistant sorghum plants at different stages of leaf development" (PDF). Journal of Agricultural and Food Chemistry. 39 (6): 1163–1165. doi:10.1021/jf00006a035.
  3. Zhao, Zhongxiang (2006). "Flavan-4-ol Glycosides from the Rhizomes of Abacopteris p enangiana". Journal of Natural Products. 69 (2): 265–268. doi:10.1021/np050191p.
  4. Sekhon, Rajandeep S.; Chopra, Surinder (2009). "Progressive Loss of DNA Methylation Releases Epigenetic Gene Silencing from a Tandemly Repeated Maize Myb Gene". Genetics. 181: 81–91. doi:10.1534/genetics.108.097170. PMC 2621191.
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