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<p>Sesquiterpenoids represent a structurally diverse class of natural products widely recognized for their ecological significance and pharmacological potential, including antimicrobial, anti-inflammatory, and anticancer properties. As part of our efforts to explore bioactive secondary metabolites from phytopathogenic fungi, we conducted a molecular networking-based analysis of <i>Bipolaris sorokiniana</i> isolate BS11134, which was fermented on a rice medium. This analysis led to the identification of three new seco-sativene-type sesquiterpenoids (<b>1</b>–<b>3</b>) and seven known analogues (<b>4</b>–<b>10</b>), with the NMR data of compound <b>4</b> being reported for the first time. The structures of these compounds were elucidated using HR-ESI-MS and extensive spectroscopic data analysis. Notably, compound <b>9</b> significantly inhibited nitrous oxide expression in lipopolysaccharide (LPS)-treated RAW264.7 cells in vitro (inhibition rate: 84.7 ± 1.7% at 10&#xa0;μM), while compound <b>1</b> (10&#xa0;μM) showed a weak inhibitory effect (inhibition rate = 28.0 ± 2.4%). Additionally, we proposed a biosynthetic pathway for these compounds. This study not only expands the chemical space of the helminthoporene class of molecules but also underscores the untapped potential of phytopathogenic fungi as promising sources of structurally unique and biologically active natural products. </p> Graphical Abstract <p></p>

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New sesquiterpenoids with anti-inflammatory effects from phytopathogenic fungus Bipolaris sorokiniana 11134

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年5月9日

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  • Qiang Yin,
  • Jianying Han,
  • Guixiang Yang,
  • Zhijun Song,
  • Keke Zou,
  • Kangjie Lv,
  • Zexu Lin,
  • Lei Ma,
  • Miaomiao Liu,
  • Yunjiang Feng,
  • Ronald J. Quinn,
  • Tom Hsiang,
  • Lixin Zhang,
  • Xueting Liu,
  • Guoliang Zhu,
  • Jingyu Zhang

摘要

Sesquiterpenoids represent a structurally diverse class of natural products widely recognized for their ecological significance and pharmacological potential, including antimicrobial, anti-inflammatory, and anticancer properties. As part of our efforts to explore bioactive secondary metabolites from phytopathogenic fungi, we conducted a molecular networking-based analysis of Bipolaris sorokiniana isolate BS11134, which was fermented on a rice medium. This analysis led to the identification of three new seco-sativene-type sesquiterpenoids (1–3) and seven known analogues (4–10), with the NMR data of compound 4 being reported for the first time. The structures of these compounds were elucidated using HR-ESI-MS and extensive spectroscopic data analysis. Notably, compound 9 significantly inhibited nitrous oxide expression in lipopolysaccharide (LPS)-treated RAW264.7 cells in vitro (inhibition rate: 84.7 ± 1.7% at 10 μM), while compound 1 (10 μM) showed a weak inhibitory effect (inhibition rate = 28.0 ± 2.4%). Additionally, we proposed a biosynthetic pathway for these compounds. This study not only expands the chemical space of the helminthoporene class of molecules but also underscores the untapped potential of phytopathogenic fungi as promising sources of structurally unique and biologically active natural products.

Graphical Abstract