AI Article Synopsis

  • A new triterpene glycoside called agroastragaloside V was discovered in the roots of Astragalus membranaceus and its structure was determined using advanced spectroscopic techniques.
  • Four previously known cycloartane glycosides were also isolated during this study.
  • The compounds were evaluated for their effectiveness in reducing LPS-induced nitric oxide production in macrophage cells, which is important for understanding their potential anti-inflammatory properties.

Article Abstract

A new cycloartane-type triterpene glycoside, agroastragaloside V (1) was isolated from the roots of Astragalus membranaceus. The structure was identified as 3-O-β-(2'-O-acetyl)-D-xylopyranosyl-6-O-β-D-glucopyranosyl-(24S)-3β,6α,24α,25-tetrahydroxy- 9,19-cyclolanostane, by means of spectroscopic methods, including HR-FAB/MS, 1D NMR (1H, 13C, DEPT), 2D NMR (gCOSY, gHSQC, gHMBC, NOESY), and IR spectroscopy. Four known cycloartane glycosides, namely, agroastragaloside I (2), agroastragaloside II (3), isoastragaloside II (4) and astragaloside IV (5) were also isolated. All isolated compounds were tested for the ability to inhibit LPS-induced nitric oxide production in RAW264.7 macrophages.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6269660PMC
http://dx.doi.org/10.3390/molecules18043725DOI Listing

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