Study on Flavonoids from the Methanol Extracts of Tephrosia purpurea Leaves  

灰毛豆叶片甲醇提取物中黄酮类物质的研究(英文)

作　　者：裴晓丽[1] 丁文兵[1,2] 黄蕊[1] 李冠华[1] 李有志[1,2] 

机构地区：[1]植物病虫害生物学与防控湖南省重点实验室,湖南农业大学植物保护学院,湖南长沙410128 [2]国家植物功能成分利用工程技术研究中心,湖南农业大学,湖南长沙410128

出　　处：《Agricultural Science & Technology》2013年第8期1204-1208,共5页农业科学与技术（英文版）

基　　金：国家自然科学基金(31071715)~~

摘　　要：[Objective] The aim was to determine flavonoids from the MeOH extracts of Tephrosia purpurea leaves and their cytotoxicitives against the ovarian cells from Sprodenia litura （SL cells）.[Method] The compounds were isolated with column chromatography and their structures were established on the basis of various spectroscopic analysis （including UV,1D and 2D NMR analyses as well as HR-ESRMS）.The cytotoxicity against the SL cells was evaluated by using MTT method.[Result] Six known flavonoids,6-methoxykaempferol （1）,6-methoxykaempferol 7-O-α-rhamnopyranoside （2）,6-methoxykaempferol 3-O-α-rhamnopyranosyl（1→2）[α-rhamno-pyranosyl（1→6）]-β-galactopyranoside （3）,6-methoxykaempferol 3-O-α-rhamnopyranosyl （1 →2）[α-rhamnopyranosyl （1 →6）]-β-galactopyranoside-7-O-α-rhamnopyranoside （4）,pongachin （5）,5,7-dimethoxy-8-（3-hydroxy-3-methylbut-1Z-enyl） flavanone （6） were isolated and determined.Except compound 5,the others were isolated from T.purpurea for the first time.For the cytotoxicity compound 5 had significant activity with the IC50 value of 4.4 mg/L while compound 1 and 3,whose cytotoxicity exceeded rotenone,also showed moderate activity.[Conclusion] Of all the compounds from T.purpurea leaves,the content of 6-methoxykaempferol compounds was considerable.The profiles of these compounds against SL cells suggested that compounds 1,3 and 5,whose cytotoxicity exceeded rotenone,were worth further research.[目的]研究灰毛豆叶片甲醇提取物中黄酮类化合物,并测试它们对斜纹夜蛾卵巢细胞(SL细胞)的细胞毒性。[方法]对甲醇提取物的分离采用了多种色谱技术分离纯化,并结合各种光谱分析(包括UV,1D,2D NMR分析以及HR-ESR-MS)进行结构鉴定。细胞毒性的测试采用的是MTT法。[结果]从灰毛豆叶片甲醇提取物中分离得到6个黄酮类化合物:6-methoxykaempferol(1),6-methoxykaempferol7-O-α-rhamnopyranoside(2),6-methoxykaempferol3-O-α-rhamnopyranosyl(1→2)[α-rhamnopyranosyl(1→6)]-β-galactopyranoside(3),6-methoxykaempferol 3-O-α-rhamnopyranosyl(1→2)[α-rhamnopyranosyl(1→6)]-β-galactopyranoside-7-O-α-rhamnopyranoside(4),pongachin(5),5,7-dimethoxy-8-(3-hydroxy-3-methylbut-1Z-enyl)flavanone(6)。除了化合物5之外其余化合物均为首次从灰毛豆中分离得到。细胞毒性测试发现pongachin(5)具有明显的细胞毒性,其IC50为4.4 mg/L,化合物1,3和5的细胞毒性均大于阳性对照鱼藤酮。[结论]灰毛豆叶片中6-methoxykaempferol类化合物(1-4)含量相对较大,化合物1,3和5在对SL细胞的活性实验中细胞毒性均大于阳性对照鱼藤酮,值得进一步研究。

关 键 词：Tephrosia purpurea FLAVONOIDS Sprodenia litura Cytotoxic activity 

分 类 号：S482.3[农业科学—农药学]