title: Structure and stereochemistry of dimeric proteracacinidins possessing the rare C-4(C) --> C-5(D) interflavanyl linkage.
abstract: The rare series of (4-->5)-linked proteracacinidins is extended by identification of oritin-(4alpha-->5)-epioritin-4beta-ol, ent-epioritin-(4alpha-->5)-epioritin-4beta-ol, epioritin-(4beta-->5)-epioritin-4alpha-ol and ent-oritin-(4beta-->5)-epioritin-4alpha-ol from the heartwoods of Acacia galpinii and Acacia caffra.
authors.affiliation: Department of Chemistry, University of the Free State, PO Box 339, 9300, Bloemfontein, South Africa
authors.forename: Linette
authors.initials: L
authors.lastname: Bennie
authors.forename: Johan
authors.initials: J
authors.lastname: Coetzee
authors.forename: Elfranco
authors.initials: E
authors.lastname: Malan
authors.forename: Daneel
authors.initials: D
authors.lastname: Ferreira
mesh_terms: D000045:Acacia / Q000737:chemistry*; D000872:Anthocyanins / Q000737:chemistry* / Q000302:isolation & purification; D005419:Flavonoids / Q000737:chemistry* / Q000302:isolation & purification; D008968:Molecular Conformation; D044945:Proanthocyanidins
chemical_list: D000872:Anthocyanins; D005419:Flavonoids; D044945:Proanthocyanidins; C013221:proanthocyanidin