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Wikipedia

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
Preferred IUPAC name
2-Phenyl-3,4-dihydro-2H-1-benzopyran-4-ol
Identifiers
  • 487-25-2 Y
3D model (JSmol)
  • Interactive image
  • 253959
  • C1C(C2=CC=CC=C2OC1C3=CC=CC=C3)O
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).
Y verify (what is YN ?)

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]

References

  1. ^ Styles and Ceska, 1977[full citation needed]
  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.

flavan, flavan, deoxyflavonoids, flavone, derived, alcohols, family, flavonoids, colorless, precursor, compounds, that, polymerize, form, phlobaphene, pigments, they, found, sorghum, glycosides, abacopterins, together, with, triphyllin, dimethyl, hydroxy, meth. 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 b d glucopyranoside can be isolated from a methanol extract of the rhizomes of Abacopteris penangiana 3 Flavan 4 ol NamesIUPAC name 2 Phenylchroman 4 olPreferred IUPAC name 2 Phenyl 3 4 dihydro 2H 1 benzopyran 4 olIdentifiersCAS Number 487 25 2 Y3D model JSmol Interactive imagePubChem CID 253959SMILES C1C C2 CC CC C2OC1C3 CC CC C3 OPropertiesChemical formula C 15H 14O 2Molar mass 226 275 g mol 1Except where otherwise noted data are given for materials in their standard state at 25 C 77 F 100 kPa Y verify what is Y N Infobox references Contents 1 Known flavan 4 ols 2 Metabolism 3 Spectral data 4 ReferencesKnown flavan 4 ols EditApiforol LuteoforolMetabolism EditFlavanone 4 reductase is an enzyme that uses 2S flavan 4 ol and NADP to produce 2S flavanone NADPH and H Spectral data EditThese compounds have absorption maxima of 564 nm 4 References Edit Styles and Ceska 1977 full citation needed 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 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 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 Retrieved from https en wikipedia org w index php title Flavan 4 ol amp oldid 1129346774, wikipedia, wiki, book, books, library,

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