Structure elucidation and complete NMR spectral assignments of two new dammarane-type tetraglycosides from Panax quinquefolium

被引：22
|
作者：
Jiang, Hai-Ping [1 ]
Qiu, Ying-Kun [1 ,2 ]
Cheng, Da-Ren [1 ]
Kang, Ting-Guo [1 ]
Dou, De-Qiang [1 ]
机构：
[1] Liaoning Univ Tradit Chinese Med, Coll Pharm, Dalian 116600, Peoples R China
[2] Xiamen Univ, Coll Med, Xiamen 361005, Peoples R China
来源：
MAGNETIC RESONANCE IN CHEMISTRY | 2008年 / 46卷 / 08期
关键词：
NMR; (1)H; (13)C; saponin; Panax quinquefolium;
D O I：
10.1002/mrc.2247
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Two new saponins were isolated from leaves of Panax quinquefolium and their structures were elucidated as 3 beta, 12 beta, 20S-trihydroxy-25-methoxydammar-23-ene 3-O-([beta-D-glucopyranosyl(1 -> 2)-beta-D-glucopyranosyl]-20-O-[alpha-L-arabinopyranosyl(1 -> 6)]-beta-D-glucopyranoside (1) and 3 beta, 20S-dihydroxy-12 beta, 23R-epoxydammar-24-ene 3-O-{[beta-D-glucopyranosyl(1 -> 2)-beta-D-glucopyranosyl]-20-O-[beta-D-xylopyanosyl(1 -> 6)]-beta-D-glucopyranoside (2)on the basis of (1)D and (2)D NMR (including (1)H, (13)C-NMR, (1)H-(1)H COSY, HSQC,TOCSY, HMBC,and NOESY), ESI-MS spectrometry and chemical methods. Copyright (C) 2008 John Wiley & Sons, Ltd.
引用
收藏
页码：786 / 790
页数：5
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