A COMPARATIVE STUDY OF THE PHENOLIC PRODUCTS IN THE HEARTWOOD OF ACACIA KARROO FROM TWO DIFFERENT LOCALITIES

Article abstract of DOI:10.1016/0031-9422(95)00966-B

Known flavonoids were found in the heartwood of Acacia karroo.New natural products were isolated from the proposed subspecies montana.They are (2'S, 3'R)-3,10-dihydroxy-9-O-(6'-hydroxy-7'-O-methyl-2'-hydroxy-methyldihydrobenzo furan-3-yl)dibenz--pyran-6-one and its 10-O-methyl analogue; 8-O-methylepiprosopin-4β-ol; 8-methoxyfustin; and 7,8,3,4"-tetrahydroxy-3'-methoxyflavone.Apart from the difference in substitution patterns of the compounds isolated from the two plant sources, the flavonoids from subspecies montana are O-methylated as opposed to none occurring in A. karroo. - Key words: Acacia karroo; Leguminosae; heartwood; (2'S, 3'R)-3,10-dihydroxy-9-O-(6'-hydroxy-7'-O-methyl-2'-hydroxymethyldihydrobenzofuran-3-yl)dibenz--pyran-6-one; 8-O-methyl-epi-prosopin-4β-ol; 8-methoxyfustin; 7,8,3,4'-tetrahydroxy-3'-methoxyflavone; flavonoids.