通过核磁共振光谱确定的裂叶荨麻多糖的结构
Structure of a polysaccharide from Urtica fissa determined by NMR spectra.
作者信息
Wang Yan-Liang, Li Li, Cheng Xiao-Chen, Lu Yu-Xin, Zhang Qing-Lin
机构信息
Beijing Institute of Radiation Medicine, Beijing 100850, China.
出版信息
J Asian Nat Prod Res. 2012;14(6):592-5. doi: 10.1080/10286020.2012.681050.
A polysaccharide, isolated and purified from the aqueous extract of nettle plant Urtica fissa, was found to consist of D-glucose and D-arabinose. Molecular weight was determined to be Mn 4140. The NMR experiments (¹H, ¹³C, ¹H--¹H COSY, TOCSY, HSQC, NOESY, and HMBC) revealed the structure as the following repeating unit: -->6)-α-D-Glcp-(1-->6)-α-D-Glcp-(1-->6)-β-D-Glcp--(1-->5)-β-D-Araf-(1-->3)-β-D-Glcp-(1-->
从荨麻科植物裂叶荨麻的水提取物中分离纯化得到一种多糖，发现其由D-葡萄糖和D-阿拉伯糖组成。测定其分子量为Mn 4140。核磁共振实验（¹H、¹³C、¹H-¹H COSY、TOCSY、HSQC、NOESY和HMBC）揭示其结构如下重复单元：→6)-α-D-葡萄糖吡喃糖基-(1→6)-α-D-葡萄糖吡喃糖基-(1→6)-β-D-葡萄糖吡喃糖基-(1→5)-β-D-阿拉伯呋喃糖基-(1→3)-β-D-葡萄糖吡喃糖基-(1→
Zotero 插件