:Prorobinetidin
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.{{cite journal|title=Antioxidant activities of mangrove Rhizophora apiculata bark extracts|journal=Food Chemistry|volume=107|pages=200–207|doi=10.1016/j.foodchem.2007.08.005|year=2008|last1=Rahim|first1=Afidah A|last2=Rocca|first2=Emmanuel|last3=Steinmetz|first3=Jean|last4=Jain Kassim|first4=M|last5=Sani Ibrahim|first5=M|last6=Osman|first6=Hasnah}}
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)-epigallocatechin, in addition to the tentatively characterized, robinetinidol [4β → 6(8)]-gallocatechin and robinetinidol-(4α → 8)-gallocatechin.[http://cat.inist.fr/?aModele=afficheN&cpsidt=3095536 Prorobinetinidins from Stryphnodendron adstringens. Palazzo de Mello J.; Petereit F.; Nahrstedt A., Phytochemistry, 1996.]{{Cite journal|title=Influence of tannins from Stryphnodendron adstringens on growth and virulence factors of Candida albicans|journal=Journal of Antimicrobial Chemotherapy|volume=58|issue=5|pages=942–949|doi=10.1093/jac/dkl377|pmid=16973655|year=2006|last1=Ishida|first1=K|last2=De Mello|first2=J. C. P|last3=Cortez|first3=D. A. G|last4=Filho|first4=B. P. D|last5=Ueda-Nakamura|first5=T|last6=Nakamura|first6=C. V|doi-access=}}