Flavan

Names
IUPAC name

Flavan

Systematic IUPAC name

2-Phenyl-3,4-dihydro-2H-1-benzopyran

Identifiers

CAS Number

* 494-12-2

3D model (JSmol)

* Interactive image

Beilstein Reference

| 383899
ChEBI |

* CHEBI:38691

ChEMBL |

* ChEMBL444299

ChemSpider |

* 84973

EC Number |

* 207-786-6

PubChem CID

* 94156

InChI

* InChI=1S/C15H14O/c1-2-6-12(7-3-1)15-11-10-13-8-4-5-9-14(13)16-15/h1-9,15H,10-11H2

Key: QOLIPNRNLBQTAU-UHFFFAOYSA-N

SMILES

* C1CC2=CC=CC=C2OC1C1=CC=CC=C1

Properties

Chemical formula

| C15H14O
Molar mass | 210.27 g/mol

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 ?)
Infobox references

The flavans are benzopyran derivatives that use the 2-phenyl-3,4-dihydro-2H-chromene skeleton. They may be found in plants. These compounds include the flavan-3-ols, flavan-4-ols and flavan-3,4-diols (leucoanthocyanidin).

A C-glycosidic flavan can be isolated from cocoa liquor.[1]

Casuarina glauca is an actinorhizal plant producing root nitrogen-fixing nodules infested by Frankia. There is a regular pattern of cell layers containing flavans.[2]

## References

1. ↑ Proanthocyanidin glycosides and related polyphenols from cacao liquor and their antioxidant effects. Tsutomu Hatano, Haruka Miyatake, Midori Natsume, Naomi Osakabe, Toshio Takizawa, Hideyuki Ito and Takashi Yoshida, Phytochemistry, April 2002, Volume 59, Issue 7, Pages 749–758, doi:10.1016/S0031-9422(02)00051-1
2. ↑ Laplaze, L.; Gherbi, H.; Frutz, T.; Pawlowski, K.; Franche, C.; Macheix, J. J.; Auguy, F.; Bogusz, D. et al. (2002). "Flavan-Containing Cells Delimit Frankia Infected Compartments in Casuarina glauca Nodules". Nitrogen Fixation: From Molecules to Crop Productivity. Current Plant Science and Biotechnology in Agriculture. 38. pp. 455. doi:10.1007/0-306-47615-0_254. ISBN 0-7923-6233-0.

Template:Flavan

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Types of plant pigments

Betalains|

* Betacyanins
* Betaxanthins

Chlorophyll|

* Chlorophyll a
* Chlorophyll b
* Chlorophyll c
* Chlorophyll d
* Chlorophyll f

Curcuminoids|

* 1,7-Bis(4-hydroxyphenyl)-1,4,6-heptatrien-3-one
* Bisdemethoxycurcumin
* Desmethoxycurcumin
* Curcumin

Flavonoids|

* Anthocyanins
* Anthocyanidins
* Anthoxanthins
* Flavans
* Condensed tannins

Carotenoids|

* Carotenes
* Retinoids
* Xanthophylls

Other|

* Allophycocyanin
* Phycocyanin
* Phycoerythrin
* Phycoerythrocyanin
* Quinones
* Xanthonoids

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