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Title: Flavan  
Author: World Heritage Encyclopedia
Language: English
Subject: Flavan, Flavonoids, Casuarina glauca, Flavan-4-ol, Flavanone
Collection: Flavans
Publisher: World Heritage Encyclopedia


Jmol-3D images Image 1
Molecular formula C15H14O
Molar mass 210.27 g/mol
Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
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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]


  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.; Duhoux, E. (2002). "Nitrogen Fixation: From Molecules to Crop Productivity". Current Plant Science and Biotechnology in Agriculture 38. p. 455.  
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