Abstract:
Institute of Traditional Medicine, Muhimbili University of Health and Allied
Sciences, P.O. Box 65001, Dar es Salaam, Tanzania.
5,5'-Dihydroxy-2',4'-dimethoxy-7-[(6-O-β-d-apiofuranosyl-β-d-glucopyranosyl)-oxy]
isoflavone (1) was isolated as the major constituent of Dalbergia vacciniifolia
root bark ethanol extract together with the four known compounds
5,7-dihydroxy-2',4',5'-trimethoxyisoflavone (3),
5,7-dihydroxy-2',4'-dimethoxy-isoflavone (4),
5-hydroxy-2',4',7-trimethoxyisoflavone (5) and
7-hydroxy-2',4',5'-trimethoxyisoflavone (6). Identification of compounds was
achieved through extensive analysis of 1D and 2D NMR and MS spectroscopy.
