Complete H-1-NMR and C-13-NMR spectral assignment of five malonyl ginsenosides from the fresh flower buds of Panax ginseng
文献类型: 外文期刊
第一作者: Wang, Yu-Shuai
作者: Wang, Yu-Shuai;Jin, Yin-Ping;Gao, Wei;Xiao, Sheng-Yuan;Zhang, Yu-Wei;Zheng, Pei-He;Wang, Jia;Liu, Jun-Xia;Sun, Cheng-He;Wang, Ying-Ping;Xiao, Sheng-Yuan
作者机构:
关键词: flower buds;ginsenoside;malonyl ginsenoside Re;NMR;Panax ginseng
期刊名称:JOURNAL OF GINSENG RESEARCH ( 影响因子:6.06; 五年影响因子:5.711 )
ISSN: 1226-8453
年卷期: 2016 年 40 卷 3 期
页码:
收录情况: SCI
摘要: Background: Ginsenosides are the major effective ingredients responsible for the pharmacological effects of ginseng. Malonyl ginsenosides are natural ginsenosides that contain a malonyl group attached to a glucose unit of the corresponding neutral ginsenosides. Methods: Medium-pressure liquid chromatography and semipreparative high-performance liquid chromatography were used to isolate purified compounds and their structures determined by extensive one-dimensional- and two-dimensional nuclear magnetic resonance (NMR) experiments. Results: A new saponin, namely malonyl-ginsenoside Re, was isolated from the fresh flower buds of Panax ginseng, along with malonyl-ginsenosides Rb1, Rb2, Rc, Rd. Some assignments for previously published H-1- and C-13-NMR spectra were found to be inaccurate. Conclusion: This study reports the complete NMR assignment of malonyl-ginsenoside Re, Rb1, Rb2, Rc, and Rd for the first time. Copyright (C) 2015, The Korean Society of Ginseng, Published by Elsevier.
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