Structure elucidation and complete NMR spectral assignment of two triterpenoid saponins from Radix Hedysari期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

Structure elucidation and complete NMR spectral assignment of two triterpenoid saponins from Radix Hedysari

Authors:	Yi Liu Yuying Zhao Hubiao Chen Bin Wang Qingying Zhang

Affiliation:	1. State Key Laboratory of Natural and Biomimetic Drugs, Peking University and Department of Natural Medicines, School of Pharmaceutical Sciences, Peking University Health Science Center, Beijing 100191, China;2. National Institute for the Control of Pharmaceutical and Biological Products, Beijing 100050, China;3. School of Chinese Medicine, Hong Kong Baptist University, Hongkong

Abstract:	A new oleanane-type triterpenoid saponin with a carbonyl group at C-15, named polybosaponin A (1), together with a known triterpenoid saponin, dehydrosoyasaponin I (2), were isolated from Radix Hedysari. On the basis of one- and two-dimensional NMR and high resolution electrospray ionization mass spectrometry, the structure of 1 were elucidated and the ¹H and ¹³C NMR spectral signals were assigned totally. In addition, the complete assignment of ¹H NMR signals and revision of incorrect assignment of ¹³C NMR signals for 2 were also achieved based on one- and two-dimensional NMR spectrometry.

Keywords:	Hedysarum polybotrys Radix Hedysari Polybosaponin A Dehydrosoyasaponin I
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