从多花独尾草鳞茎中分离得到的三种新的高异黄酮。
Three new homoisoflavanones from the bulbs of Ledebouria floribunda.
作者信息
Calvo María Isabel
机构信息
Dipartamento Farmacia y Tecnología Farmacéutica (Facultad de Farmacia), University of Navarra, 31008, Pamplona, Spain.
出版信息
Fitoterapia. 2009 Oct;80(7):394-8. doi: 10.1016/j.fitote.2009.05.010. Epub 2009 May 14.
Three new homoisoflavanones, namely ledebourin A (1), ledebourin B (2) and ledebourin C (3) were isolated from the bulbs of Ledebouria floribunda. Their structures were elucidated on the basis of detail spectroscopic analyses. This is the first report of this type of homoisoflavanones. Ledebourin B (2) and ledebourin C (3) exhibited potent antioxidant activity in the 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical-scavenging compared to the positive controls, the well-known antioxidant BHT and BHA.
从多花独尾草的鳞茎中分离出三种新的高异黄酮，即列当黄素A（1）、列当黄素B（2）和列当黄素C（3）。通过详细的光谱分析确定了它们的结构。这是此类高异黄酮的首次报道。与阳性对照、著名抗氧化剂丁基羟基甲苯（BHT）和丁基羟基茴香醚（BHA）相比，列当黄素B（2）和列当黄素C（3）在2,2-二苯基-1-苦基肼（DPPH）自由基清除实验中表现出较强的抗氧化活性。
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