Johan Coetzee, Elfranco Malan and Daneel Ferreira
The range of natural dimeric proteracacinidins is extended by identification of the first (4-O-3)-linked bis-teracacidins, epioritin-(4β→3)-epioritin-4α-ol 13 and epioritin-(4β→3)-oritin-4α-ol 16 in the heartwood extract of Acacia galpinii.