Sanguiin H-6 is an
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 ...
.
Natural occurrence
Sanguiin H-6 can be found in
Rosaceae
Rosaceae (), the rose family, is a family of flowering plants that includes 4,828 known species in 91 genera.
The name is derived from the type genus '' Rosa''. The family includes herbs, shrubs, and trees. Most species are deciduous, but som ...
such as the great burnet (''
Sanguisorba officinalis''), in strawberries (''
Fragaria × ananassa'') and in ''
Rubus
''Rubus'' is a large and diverse genus of flowering plants in the rose family, Rosaceae, subfamily Rosoideae, most commonly known as brambles. Fruits of various species are known as raspberries, blackberries, dewberries, and bristleberries. ...
'' species such as red raspberries (''
Rubus idaeus
''Rubus idaeus'' (raspberry, also called red raspberry or occasionally European red raspberry to distinguish it from other raspberry species) is a red-fruited species of ''Rubus'' native to Europe and northern Asia and commonly cultivated in oth ...
'')
or cloudberries (''
Rubus chamaemorus'').
[
]
Chemistry
Sanguiin H-6 is dimer of casuarictin linked by a bond between the 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 ...
residue and one of 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, ...
units. It has sanguisorbic acid ester groups as linking units between glucopyranose moieties. Sanguiin H-6 contributes to the in vitro antioxidant
Antioxidants are Chemical compound, compounds that inhibit Redox, oxidation, a chemical reaction that can produce Radical (chemistry), free radicals. Autoxidation leads to degradation of organic compounds, including living matter. Antioxidants ...
activity of raspberries.
References
External links
Sanguiin H-6 on www.phenol-explorer.eu
{{Ellagitannin
Ellagitannins
Tannin dimers