Procyanidin dimer

Last updated May 03, 2019

Proanthocyanidin dimers are a specific type of proanthocyanidin, which are a class of flavanoids. They are oligomers of flavan-3-ols.

Proanthocyanidins are a class of polyphenols found in a variety of plants. Chemically, they are oligomeric flavonoids. Many are oligomers of catechin and epicatechin and their gallic acid esters. More complex polyphenols, having the same polymeric building block, form the group of tannins.

An oligomer is a molecular complex of chemicals that consists of a few repeating units, in contrast to a polymer, where the number of monomers is, in principle, infinite. Dimers, trimers, and tetramers are, for instance, oligomers composed of two, three, and four monomers, respectively.

Flavan-3-ol any chemical compound having a flavan skeleton as a core structure with a hydroxy group attached in 3 position

Flavan-3-ols are derivatives of flavans that use the 2-phenyl-3,4-dihydro-2H-chromen-3-ol skeleton. These compounds include catechin, epicatechin gallate, epigallocatechin, epigallocatechin gallate, proanthocyanidins, theaflavins, thearubigins.

Dimeric B-type proanthocyanidins
Dimeric A-type proanthocyanidins

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Related Research Articles

Procyanidins are members of the proanthocyanidin class of flavonoids. They are oligomeric compounds, formed from catechin and epicatechin molecules. They yield cyanidin when depolymerized under oxidative conditions.

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