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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.[1]

Stryphnodendron adstringens ( the barbatimão), a species of legume found in Brazil, produces prorobinetinidins in its stem bark. These are robinetinidol-(4? -> 8)-epigallocatechin, robinetinidol-(4? -> 8)-epigallocatechin, robinetinidol-(4? -> 8)-epigallocatechin 3-O-gallate, robinetinidol-(4? -> 8)-epigallocatechin 3-O-gallate, robinetinidol-(4? -> 6)-gallocatechin and robinetinidol-(4? -> 6)-epigallocatechin, in addition to the tentatively characterized, robinetinidol [4? -> 6(8)]-gallocatechin and robinetinidol-(4? -> 8)-gallocatechin.[2][3]


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