Tergallic acids are trimers of gallic acid, often found naturally in the form of glycosides. Tergallic acid O- or C-glucosides that can be found in acorns of several Quercus (oak) species. [1] The dehydrated tergallic acid C-glucoside and tergallic acid O-glucoside can be characterised in the acorns of Quercus macrocarpa. [2] Dehydrated tergallic-C-glucoside (m/z 613) can be found in the cork from Quercus suber. [3]
Tergallic acid glucosides can also be found in Terminalia chebula. [4]
Tergallic acid dilactone can be found in Rhynchosia volubilis seeds. [5]
The chemical formula is not the same as given by Kinjo et al. [5] (molecule with an ether link between the ellagic and gallic acid residues) or by Cantos, [1] Chapman [2] and Fernandes et al. [3] (molecule with a carbon-carbon link). Cantos, Fernandes and Chapman called the molecule with an ether link valoneic acid dilactone while Kinjo and Shuaibu et al. [6] called the molecule with a carbon-carbon link flavogallonic acid dilactone.
Tergallic acids are trimers of gallic acid, often found naturally in the form of glycosides. Tergallic acid O- or C-glucosides that can be found in acorns of several Quercus (oak) species. [1] The dehydrated tergallic acid C-glucoside and tergallic acid O-glucoside can be characterised in the acorns of Quercus macrocarpa. [2] Dehydrated tergallic-C-glucoside (m/z 613) can be found in the cork from Quercus suber. [3]
Tergallic acid glucosides can also be found in Terminalia chebula. [4]
Tergallic acid dilactone can be found in Rhynchosia volubilis seeds. [5]
The chemical formula is not the same as given by Kinjo et al. [5] (molecule with an ether link between the ellagic and gallic acid residues) or by Cantos, [1] Chapman [2] and Fernandes et al. [3] (molecule with a carbon-carbon link). Cantos, Fernandes and Chapman called the molecule with an ether link valoneic acid dilactone while Kinjo and Shuaibu et al. [6] called the molecule with a carbon-carbon link flavogallonic acid dilactone.