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

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.
Fitoterapia (Impact Factor: 2.35). 03/2009; 80(2):127-9. DOI: 10.1016/j.fitote.2008.12.001
Source: PubMed


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 (1)H and (13)C NMR spectral signals were assigned totally. In addition, the complete assignment of (1)H NMR signals and revision of incorrect assignment of (13)C NMR signals for 2 were also achieved based on one- and two-dimensional NMR spectrometry.

10 Reads
  • Source
    • "Twelve triterpenoids (80–91) were isolated from plants of genus Hedysarum, most of which were distributed in H. polybotrys[9,17,44,45,47,48]. "
    [Show abstract] [Hide abstract]
    ABSTRACT: In China, several species (Hedysarum polybotrys Hand.-Mazz., Hedysarum limprichtii Hlbr., Hedysarum vicioider Turcz. var. Taipeicum Hand.-Mazz. Liu, Hedysarum smithianum, et al.) of genus Hedysarum have a long history of use in traditional Chinese medicine (TCM). In TCM, these plants are used to increase the energy of the body. To date, 155 compounds, including flavonoids, triterpenes, coumarins, lignanoids, nitrogen compounds, sterols, carbohydrates, fatty compounds, and benzofuran, have been isolated from plants of the genus Hedysarum. Various chemical constituents contribute to the antioxidant, anti-tumor, anti-aging, anti-diabetic, and anti-hypertensive properties of these plants. Hedysarum species are used to treat infestation with gastrointestinal nematodes and may support the immune system and peripheral nervous system. In the present review, we summarize the research on the phytochemistry and pharmacology of Hedysarum species, which will be useful for better utilization of these important species in TCM.
    Full-text · Article · Jul 2013 · Chemistry Central Journal
  • [Show abstract] [Hide abstract]
    ABSTRACT: AIM: To study the chemical constituents from the rhizome of Hedysarum polybotrys. METHODS: Chemical constituents were isolated by chromatographic methods and the structures were elucidated by NMR spectra and physicochemical properties. RESULTS: A new phenylpropionate derivative was isolated from the rhizome of Hedysarum polybotrys. Its structure was established as (E)-3-(4-hydroxy-2-methoxyphenyl)-propenoic acid 4-hydroxy-3-methoxyphenyl ester. CONCLUSION: The compound is a new phenylpropionate derivative. Copyright©2009, China Pharmaceutical University. Published by Elsevier B.V. All rights reserved.
    No preview · Article · Jan 2009 · Chinese Journal of Natural Medicines
  • [Show abstract] [Hide abstract]
    ABSTRACT: Radix Astragali and Radix Hedysari, two famous traditional Chinese medicines (TCM), were considered to possess the same efficacy in TCM traditionally. However, modern pharmacological and phytochemical investigations showed that they were different in efficacy and chemical constituents to some degree. In this study, the principal constituents of the two drugs, isoflavonoids and saponins, were comparatively analysed using HPLC-UV and HPLC-ELSD methods. The results showed that there were some common compounds, especially flavonoids, in both drugs, while the differences in the types and contents of their chemical constituents, especially in saponins, were also obvious. The similarities and differences of the chemicals may be responsible, at least partially, for the similarities and differences in their efficacies or bioactivities.
    No preview · Article · Oct 2011 · Natural product research
Show more