芜萍的化学成分  

Chemical constituents of Wolffi a globosa

作　　者：王妮妮[1,2] 方扬[1] 杨涛[1] 李国友[1] 赵海[1] 

机构地区：[1]中国科学院成都生物研究所,成都610041 [2]中国科学院大学,北京100049

出　　处：《应用与环境生物学报》2014年第6期1016-1019,共4页Chinese Journal of Applied and Environmental Biology

基　　金：中国科学院知识创新工程重点方向项目和国家科技支撑计划项目资助~~

摘　　要：浮萍科芜萍属(Wolffi a Hork.ex Schleid.)是世界上最小的开花植物,可作为蔬菜、饲料使用.为促进科学地开发利用芜萍资源,采用MCI、硅胶柱层析、凝胶色谱以及高效液相色谱等方法对芜萍(Wolffia globosa)的化学成分进行研究.从乙醇提取物中分离得到8个化合物,利用质谱、核磁共振等波谱技术分别鉴定为芹菜素-7-O-β-D-吡喃葡糖苷(1)、牡荆苷(2)、异牡荆苷(3)、荭草苷(4)、异荭草苷(5)、木犀草素-7-O-β-D-吡喃葡糖苷(6)、异荭草苷-6′′-O-β-D-吡喃葡糖苷(7)和芹菜素-6,8-di-C-β-D-吡喃葡糖苷(8).本研究表明,芜萍(W.globosa)的主要化学成分为芹菜素和木犀草素的碳苷和氧苷化合物,其生物活性广泛,因此芜萍是一种黄酮类天然产物的新来源.The Wolffia genus of the family Lemnaceae is the smallest flowering plant, which could be used as fodder and vegetable. This study was carried out for a comprehensive understanding of the chemical constituents of Wolffia globosa using MCI, silic gel, Sephadex LH-20 column chromatography and HPLC methods. As a result, eight compounds were isolated and identified from the EtOH extract of W. globosa. On the basis of MS and NMR spectral data, their structures were identified to be apigenin-7-O-β-D-glucoside （1）, vitexin （2）, isovitexin （3）, orientin （4）, isoorientin （5）, luteolin-7-O-β-D-glucoside （6）, isoorientin-6＂-O-β-D-glucoside （7）, and apigenin-6,8-di-C-β-D-glucoside （8）. The result demonstrated that glycosidic derivatives of apigenin and luteolin with a broad range of bioactivities are the main components in W. globosa, and that W. globosa is a new source for bioactive flavones. Fig 1, Ref24

关 键 词：芜萍 黄酮 荭草苷 异荭草苷 牡荆苷 异牡荆苷 

分 类 号：Q946[生物学—植物学]