Innocent Ester
Institute of Traditional Medicine, Muhimbili University of Health and Allied Sciences, P.O. Box 65001, Dar es Salaam, Tanzania.
Sci Pharm. 2012 Apr-Jun;80(2):469-74. doi: 10.3797/scipharm.1112-23. Epub 2012 Feb 27.
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.
5,5'-二羟基-2',4'-二甲氧基-7-[(6-O-β-D-芹菜呋喃糖基-β-D-吡喃葡萄糖基)-氧基]异黄酮（1）作为越南黄花梨根皮乙醇提取物的主要成分被分离出来，同时还分离出了四种已知化合物5,7-二羟基-2',4',5'-三甲氧基异黄酮（3）、5,7-二羟基-2',4'-二甲氧基异黄酮（4）、5-羟基-2',4',7-三甲氧基异黄酮（5）和7-羟基-2',4',5'-三甲氧基异黄酮（6）。通过对一维和二维核磁共振及质谱光谱的广泛分析实现了化合物的鉴定。
