一种来自合欢（Albizia julibrissin Durazz.）的新三萜皂苷

A new triterpenoid saponin from Albizia julibrissin Durazz.

作者信息

Xu Tun-Hai, Li Hai-Tao, Xu Ya-Juan, Zhao Hong-Feng, Xie Sheng-Xu, Han Dong, Si Yun-Shan, Li Yu, Niu Jian-Zhao, Xu Dong-Ming

机构信息

Department of Traditional Chinese Medicine Chemistry, School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China.

出版信息

J Asian Nat Prod Res. 2008 Jul-Aug;10(7-8):781-5. doi: 10.1080/10286020802031056.

DOI:10.1080/10286020802031056

PMID:18696332

Abstract

A new triterpenoid, saponin hehuanoside A, was isolated together with the known triterpenoid saponins 2, 3, and 4 from the stem bark of Albizia julibrissin. With the help of chemical and spectral analyzes (IR, MS, 1D-NMR, and 2D-NMR), the structure of the new triterpenoid saponin was elucidated as 21-O-[(6S)-2-trans-2,6-dimethyl-6-O-beta-d-quinovopyranosyl-2,7-octadienoyl]-3-O-beta-d-xylopyranosyl-(1 --> 2)-beta-d-fucopyranosyl-(1 --> 6)-beta-d-2-deoxy-2-acetamidoglucopyrasyl acacic acid 28-O-alpha-l-arabinofuranosyl-(1 --> 4)-[-beta-d-glucopyranosyl-(1 --> 3)]-alpha-l-rhamnopyranosyl-(1 --> 2)-beta-d-glucopyranosyl ester (1). Three known triterpenoid saponins 2-4 were identified on the basis of spectroscopic data.

摘要

从合欢的茎皮中分离出一种新的三萜皂苷合欢皂苷A，以及已知的三萜皂苷2、3和4。借助化学和光谱分析（红外光谱、质谱、一维核磁共振和二维核磁共振），确定新三萜皂苷的结构为21-O-[(6S)-2-反式-2,6-二甲基-6-O-β-D-奎诺吡喃糖基-2,7-辛二烯酰]-3-O-β-D-木吡喃糖基-(1→2)-β-D-岩藻吡喃糖基-(1→6)-β-D-2-脱氧-2-乙酰氨基葡萄糖吡喃糖基金合欢酸28-O-α-L-阿拉伯呋喃糖基-(1→4)-[-β-D-葡萄糖吡喃糖基-(1→3)]-α-L-鼠李吡喃糖基-(1→2)-β-D-葡萄糖吡喃糖基酯（1）。根据光谱数据鉴定出三种已知的三萜皂苷2-4。