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Sanguisorbic acid is a constituent of some 
It is found in 2,3-O-hexahydroxydiphenoyl-4,6-O-sanguisorboyl-(α/β)-glucose, an ellagitannin found in '' Rubus sanctus''. It is also found in lambertianin A, B, C and D, all ellagitannins found in '' Rubus lambertianus''.
Plant polyphenols: vegetable tannins revisited by Edwin Haslam, page 136
Ellagitannins Biphenyls Dihydroxybenzoic acids Trihydroxybenzoic acids Catechols Pyrogallols Diphenyl ethers Tricarboxylic acids {{aromatic-stub
ellagitannin
image:Castalagin.svg, 130px, Castalagin is a representative ellagitannin, characterized by coupled gallic acid substituents
The ellagitannins are a diverse class of hydrolyzable tannins, a type of polyphenol formed primarily from the oxidative link ...
s. It is constituted by a hexahydroxydiphenic acid
Hexahydroxydiphenic acid is an organic compound with the formula HO)3C6HCO2Hsub>2. It is the oxidatively coupled derivative of gallic acid It is a white solid, although samples are typically brown owing to oxidation.
Occurrence
left, 142px, ...
unit linked by an O-C bond to a gallic acid
Gallic acid (also known as 3,4,5-trihydroxybenzoic acid) is a trihydroxybenzoic acid with the formula C6 H2( OH)3CO2H. It is classified as a phenolic acid. It is found in gallnuts, sumac, witch hazel, tea leaves, oak bark, and other plant ...
. The differences with its isomers, valoneic acid and nonahydroxytriphenic acid
Nonahydroxytriphenic acid is a moiety found in some ellagitannins such as roburin A, B,C and D, castalagin
Castalagin is an ellagitannin, a type of hydrolyzable tannin, found in oak and chestnut wood and in the stem barks of ''Terminalia leiocarpa ...
, are that the hydroxyl that links the hexahydroxydiphenoyl
Hexahydroxydiphenic acid is an organic compound with the formula HO)3C6HCO2Hsub>2. It is the oxidatively coupled derivative of gallic acid It is a white solid, although samples are typically brown owing to oxidation.
Occurrence
left, 142px, ...
(HHDP) group to the galloyl
Gallic acid (also known as 3,4,5-trihydroxybenzoic acid) is a trihydroxybenzoic acid with the formula C6 H2( OH)3CO2H. It is classified as a phenolic acid. It is found in gallnuts, sumac, witch hazel, tea leaves, oak bark, and other plant ...
group belongs to the galloyl group in valoneic acid, while in nonahydroxytriphenic acid, the hexahydroxydiphenic acid
Hexahydroxydiphenic acid is an organic compound with the formula HO)3C6HCO2Hsub>2. It is the oxidatively coupled derivative of gallic acid It is a white solid, although samples are typically brown owing to oxidation.
Occurrence
left, 142px, ...
unit is linked by a C-C bond to gallic acid
Gallic acid (also known as 3,4,5-trihydroxybenzoic acid) is a trihydroxybenzoic acid with the formula C6 H2( OH)3CO2H. It is classified as a phenolic acid. It is found in gallnuts, sumac, witch hazel, tea leaves, oak bark, and other plant ...
.
It is found in 2,3-O-hexahydroxydiphenoyl-4,6-O-sanguisorboyl-(α/β)-glucose, an ellagitannin found in '' Rubus sanctus''. It is also found in lambertianin A, B, C and D, all ellagitannins found in '' Rubus lambertianus''.
See also
* Valoneic acidReferences
External links
Plant polyphenols: vegetable tannins revisited by Edwin Haslam, page 136
Ellagitannins Biphenyls Dihydroxybenzoic acids Trihydroxybenzoic acids Catechols Pyrogallols Diphenyl ethers Tricarboxylic acids {{aromatic-stub