An oxidized tartaric acid residue as a new bridge potentially competing with acetaldehyde in flavan-3-ol condensation

Article abstract of DOI:10.1016/S0031-9422(97)00276-8

Iron-induced oxidation of (+)-catechin in a wine-like solution yielded typical products, including colourless and yellow compounds. Structural characterization of the major colourless one indicated that it is a dimer, in which flavanol units are linked th