Two new flavonol glycosides from the leaves of<i>Elaeagnus pungens</i>
作者:Yue-Bin Ge、Meng-Shun Li、Zhi-Nan Mei、Guang-Zhong Yang
DOI:10.1080/10286020.2013.812078
日期:2013.10
The leaves of Elaeagnus pungens were extracted with 70% ethanol and successively purified by column chromatography. Seven constituents were obtained and characterized, all of which belong to the class of flavonol glycosides. Their structures were elucidated on the basis of spectroscopic methods including 1D/2D NMR and MS analysis techniques. The seven flavonol glycosides were determined as kaempferol
用70%的乙醇提取沙枣的叶子,然后通过柱色谱法进行纯化。获得并表征了七个成分,所有这些成分均属于黄酮醇糖苷类。在包括1D / 2D NMR和MS分析技术在内的光谱方法的基础上阐明了它们的结构。确定了7种黄酮糖苷为山奈酚3- O- β- d-吡喃葡萄糖基- (1→3)-α- 1-鼠李糖吡喃糖基-(1→6)-[α- 1-鼠李糖吡喃糖基(1→2)]-β - d -galactopyranoside(1),异鼠李素3- ö -β- d -glucopyranosyl-(1→3)-α-升-鼠李吡喃糖基-(1→6)-β- d-吡喃半乳糖苷(2),以及五个已知化合物。体外3-(4,5-二甲基噻唑-2-基)-2,5-二苯基四唑-溴甲烷测定表明,与溶剂相比,分离出的黄酮糖苷在哮喘气道平滑肌细胞中没有增殖活性。组。