Gallocatechol or gallocatechin (GC) is a

flavan-3-ol Flavan-3-ols (sometimes referred to as flavanols) are a subgroup of flavonoids. They are derivatives of flavans that possess a 2-phenyl-3,4-dihydro-2''H''-chromen-3-ol skeleton. Flavan-3-ols are structurally diverse and include a range of compo ...

, a type of chemical compound including

catechin Catechin is a flavan-3-ol, a type of secondary metabolite providing antioxidant roles in plants. It belongs to the subgroup of polyphenols called flavonoids. The name of the catechin chemical family derives from ''catechu'', which is the tannic ...

, with the gallate residue being in an isomeric ''trans'' position. This compound possesses two

epimer In stereochemistry, an epimer is one of a pair of diastereomers. The two epimers have opposite configuration at only one stereogenic center out of at least two. All other stereogenic centers in the molecules are the same in each. Epimerization is t ...

s. The most common, (+)-gallocatechin (GC), CAS number 970-73-0, is found notably in

green tea Green tea is a type of tea made from the leaves and buds of the '' Camellia sinensis'' that have not undergone the withering and oxidation process that creates oolong teas and black teas. Green tea originated in China in the late 1st millenn ...

. The other enantiomer is called (−)-gallocatechin or ''ent''-gallocatechin. It was first isolated from green tea by Michiyo Tsujimura in 1934. Epigallocatechin is another type of catechin, with the gallate residue being in an isomeric ''cis'' position. It can be found in St John's wort.

References

External links

Epigallocatechin on the Sigma-Aldrich website

Gallocatechin on the Sigma-Aldrich website
{{GHBergics Flavanols CB1 receptor agonists GABAA receptor positive allosteric modulators GHB receptor agonists

See also

References

External links