Pubescenosides E–K, Seven New Triterpenoid Saponins from the Roots of Ilex pubescens and Their Anti-Inflammatory Activity

Seven new triterpenoid saponins (1–7), together with three known ones (8–10), were isolated from Ilex pubescens. Elucidation of their structures was performed based on high-resolution electrospray ionisation mass spectrometry (HR-ESI-MS), infrared spectra (IR), and nuclear magnet...

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Bibliographic Details
Main Authors: Xiaoxu Qiao, Mengying Ji, Yunda Yao, Leilei Ma, Jinjun Wu, Guochao Liao, Hua Zhou, Zhongqiu Liu, Peng Wu
Format: Article
Language:English
Published: MDPI AG 2018-06-01
Series:Molecules
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Online Access:http://www.mdpi.com/1420-3049/23/6/1426
Description
Summary:Seven new triterpenoid saponins (1–7), together with three known ones (8–10), were isolated from Ilex pubescens. Elucidation of their structures was performed based on high-resolution electrospray ionisation mass spectrometry (HR-ESI-MS), infrared spectra (IR), and nuclear magnetic resonance (NMR) spectroscopic data. The anti-inflammatory activity of the isolates toward lipopolysaccharide (LPS)-stimulated RAW264.7 macrophages was investigated. The results demonstrated that compounds 3, 5, and 6 inhibited the expression of inducible nitric oxide synthase (iNOS) protein in comparison with LPS stimulation in RAW264.7 cells.
ISSN:1420-3049