School of Pharmaceutical Sciences, Research Center of Basic Medical Sciences, Tianjin Medical University, Tianjin 300070, P. R. China.
Chem Biodivers. 2011 Jun;8(6):1112-20. doi: 10.1002/cbdv.201000224.
We isolated seven novel compounds, namely, 3',4',6-trihydroxy-2,4-dimethoxy-3-(3″,4″-dihydroxybenzyl)chalcone (1), 3',6-dihydroxy-2,4,4'-trimethoxy-3-(3″,4″-dihydroxybenzyl)chalcone (2), α,β-dihydro-3',6-dihydroxy-2,4,6'-trimethoxy-3-(3″,4″-dihydroxybenzyl)chalcone (3), 3',4,4'-trihydroxy-2,6-dimethoxychalcone (4), 4',5,7-trihydroxy-6-(3″,4″-dihydroxybenzyl)flavone (5), 3-(3',4'-dihydroxybenzyl)-6,7-dihydroxycoumarin (6), 3-(3',4'-dihydroxyphenyl)-3,4-dihydroisocoumarin (7), as well as a known compound, 3',4',7-trihydroxy-5-methoxyflavanone (8) from the whole grass of Onychium japonicum, and elucidated their structures by spectroscopic methods. Compounds 1-3 exhibited significant multidrug resistance (MDR) reversal effects on MCF-7/ADR and Bel-7402/5-Fu cell lines.
我们从淡竹叶全草中分离得到了 7 个新化合物,分别为:3',4',6-三羟基-2,4-二甲氧基-3-(3",4"-二羟基苄基)查耳酮(1)、3',6-二羟基-2,4,4'-三甲氧基-3-(3",4"-二羟基苄基)查耳酮(2)、α,β-二氢-3',6-二羟基-2,4,6'-三甲氧基-3-(3",4"-二羟基苄基)查耳酮(3)、3',4,4'-三羟基-2,6-二甲氧基查耳酮(4)、4',5,7-三羟基-6-(3",4"-二羟基苄基)黄酮(5)、3-(3',4'-二羟基苄基)-6,7-二羟基香豆素(6)、3-(3',4'-二羟基苯基)-3,4-二氢异香豆素(7),以及一个已知化合物 3',4',7-三羟基-5-甲氧基黄烷酮(8)。我们通过光谱方法阐明了它们的结构。化合物 1-3 对 MCF-7/ADR 和 Bel-7402/5-Fu 细胞系表现出显著的多药耐药(MDR)逆转作用。