Institute of Frontier Medical Science, Jilin University, Changchun 130021, China.
Nat Prod Res. 2012;26(8):731-5. doi: 10.1080/14786419.2010.551644. Epub 2011 Oct 20.
A new ocotillol-type triterpenoid saponin, named 20(R)-pseudoginsenoside F(11) (1), was isolated along with pseudoginsenoside F(11) (2) from red American ginseng. The structure of the new saponin was elucidated as 6-O-[α-L-rhamnopyranosyl-(1 → 2)-β-D-glucopyranosyl]-dammar-20R, 24R-epoxy-3β, 6α, 12β, 25-tetraol by a combination analysis of NMR and mass spectrometry. The complete signal assignments of the two compounds were carried out by means of 2-D NMR spectral analysis.
从红参中分离得到了一种新的毛蕊花型三萜皂苷，命名为 20(R)-伪人参皂苷 F(11) (1)。与伪人参皂苷 F(11) (2)一起分离得到。新皂苷的结构通过 NMR 和质谱的组合分析鉴定为 6-O-[α-L-鼠李吡喃糖基-(1 → 2)-β-D-吡喃葡萄糖基]-达玛-20R,24R-环氧-3β,6α,12β,25-四醇。通过二维 NMR 光谱分析完成了两种化合物的完整信号分配。
