Dehydrohexahydroxydiphenic acid

Dehydrohexahydroxydiphenic acid is a group found in dehydroellagitannins. It is formed from hexahydroxydiphenic acid (HHDP) through oxidation of the plant hydrolysable tannins. It is found in ellagitannins such as euphorbin A, geraniin or mallotusinic 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
3D model (JSmol)
PubChem CID
  • InChI=1S/C14H10O11/c15-5-1-3(11(18)19)7-8-4(12(20)21)2-6(16)14(24,13(8,22)23)25-10(7)9(5)17/h1-2,8,15,17,22-24H,(H,18,19)(H,20,21)
    Key: ZMIDWLVYIBGXNC-UHFFFAOYSA-N
SMILES
  • C1=C(C2C3=C(C(=C(C=C3C(=O)O)O)O)OC(C1=O)(C2(O)O)O)C(=O)O
Properties
C14H10O11
Molar mass 354.22 g/mol
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

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

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