Dehydrohexahydroxydiphenic acid

Dehydrohexahydroxydiphenic acid
Names
IUPAC name
5,6,9,13,13-pentahydroxy-10-oxo-8-oxatricyclo[7.3.1.02,7]trideca-2,4,6,11-tetraene-3,12-dicarboxylic acid
Other names
Dehydrohexahydroxydiphenoyl
DHHDP
Identifiers
Jmol-3D images Image
Properties
C14H10O11
Molar mass 354.22 g/mol
Except where noted otherwise, data is given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
Infobox references

Dehydrohexahydroxydiphenic acid is a group found in dehydroellagitannins. It is formed from hexahydroxydiphenic acid (HHDP) through oxidation of the plant hydrolysable tannins.[1] It is found in ellagitannins such as euphorbin A, geraniin or mallotusinic acid.

In geraniin, it is forming an equilibrium mixture of six-membered hemi-ketal and five-membered hemi-ketal forms.[2]

References

  1. Correlation of oxidative transformations of hydrolyzable tannins and plant evolution. Takashi Yoshida and Tsutomu Hatano, Phytochemistry, November 2000, Volume 55, Issue 6, Pages 513–529, doi:10.1016/S0031-9422(00)00232-6
  2. Herbal Drugs in Traditional Japanese Medicine, Tsutomu Hatano, doi:10.5772/53126