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Robinetinidol
Robinetinidol is a flavanol, a type of flavonoids. Prorobinetinidins, flavanols oligomers containing robinetinidol, can be found in ''Stryphnodendron adstringens ''Stryphnodendron adstringens'' ( pt, barbatimão) is a species of legume in the genus ''Stryphnodendron'' found in Brazil. ''Holcocera cerradicola'' is a moth, whose larvae feed on ''S. adstringens''. Chemistry ''Stryphnodendron adstringens'' ...''. See also * Robinetinidin, the corresponding anthocyanidin References External links Robinetinidol on metabolomics.jp Flavanols Pyrogallols {{Aromatic-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flavanol
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 compounds, such as catechin, epicatechin gallate, epigallocatechin, epigallocatechin gallate, proanthocyanidins, theaflavins, thearubigins. They are found in most plants and have a role in plant defense. Chemical structure The single-molecule (monomer) catechin, or isomer epicatechin (see diagram), adds four hydroxyls to flavan-3-ol, making building blocks for concatenated polymers (proanthocyanidins) and higher order polymers (anthocyanidins). Flavan-3-ols possess two chiral carbons, meaning four diastereoisomers occur for each of them. They are distinguished from the yellow, ketone-containing flavonoids such as quercitin and rutin, which are called flavonols. Early use of the term bioflavonoid was imprecisely applied to include the flava ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flavanols
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 compounds, such as catechin, epicatechin gallate, epigallocatechin, epigallocatechin gallate, proanthocyanidins, theaflavins, thearubigins. They are found in most plants and have a role in plant defense. Chemical structure The single-molecule (monomer) catechin, or isomer epicatechin (see diagram), adds four hydroxyls to flavan-3-ol, making building blocks for concatenated polymers (proanthocyanidins) and higher order polymers (anthocyanidins). Flavan-3-ols possess two chiral carbons, meaning four diastereoisomers occur for each of them. They are distinguished from the yellow, ketone-containing flavonoids such as quercitin and rutin, which are called flavonol, flavonols. Early use of the term bioflavonoid was imprecisely applied to include ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Robinetinidin
Robinetinidin is an anthocyanidin, a type of flavonoid. Prorobinetinidins, condensed tannins oligomers containing robinetinidol, can be found in '' Stryphnodendron adstringens''. They yield robinetinidin when depolymerized under oxidative conditions. References See also * Robinetinidol, the corresponding flavan-3ol * Leucorobinetinidin, the corresponding leucoanthocyanidin Leucoanthocyanidin (flavan-3,4-diols) are colorless chemical compounds related to anthocyanidins and anthocyanins. Leucoanthocyanins can be found in '' Anadenanthera peregrina'' and in several species of '' Nepenthes'' including '' N. burbidg ... Anthocyanidins Pyrogallols {{aromatic-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Prorobinetinidin
Prorobinetidins are a type of condensed tannins formed from robinetinidol. They form robinetinidin when depolymerized under oxidative conditions. ''Mimosa'' and quebracho tannins are, according to a comparative 13C NMR study of polyflavonoids, found to be predominantly profisetinidin/prorobinetidin-type tannins. ''Stryphnodendron adstringens ''Stryphnodendron adstringens'' ( pt, barbatimão) is a species of legume in the genus ''Stryphnodendron'' found in Brazil. ''Holcocera cerradicola'' is a moth, whose larvae feed on ''S. adstringens''. Chemistry ''Stryphnodendron adstringens'' ...'' ( the barbatimão), a species of legume found in Brazil, produces prorobinetinidins in its stem bark. These are robinetinidol-(4β → 8)-epigallocatechin, robinetinidol-(4α → 8)-epigallocatechin, robinetinidol-(4β → 8)-epigallocatechin 3-O-gallate, robinetinidol-(4α → 8)-epigallocatechin 3-O-gallate, robinetinidol-(4α → 6)-gallocatechin and robinetinidol-(4α → 6)-epigall ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stryphnodendron Adstringens
''Stryphnodendron adstringens'' ( pt, barbatimão) is a species of legume in the genus ''Stryphnodendron'' found in Brazil. ''Holcocera cerradicola'' is a moth, whose larvae feed on ''S. adstringens''. Chemistry ''Stryphnodendron adstringens'' stem bark is used to produce tannins of the prorobinetinidins (flavanols oligomers containing robinetinidol) or prodelphinidins type. These are robinetinidol-(4β → 8)-epigallocatechin, robinetinidol-(4α → 8)-epigallocatechin, robinetinidol-(4β → 8)-epigallocatechin 3-O-gallate, robinetinidol-(4α → 8)-epigallocatechin 3-O-gallate, robinetinidol-(4α → 6)-gallocatechin and robinetinidol-(4α → 6)-epigallocatechin, in addition to the tentatively characterized, robinetinidol β → 6(8)gallocatechin and robinetinidol-(4α → 8)-gallocatechin. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
