天然产物研究与开发 ›› 2026, Vol. 38 ›› Issue (4): 762-766.doi: 10.16333/j.1001-6880.2026.4.007 cstr: 32307.14.1001-6880.2026.4.007

• 研究简报 • 上一篇    下一篇

海洋来源金色链霉菌中1个新的螺缩酮化合物

姜瑞金1,瞿添添1,闫小梅1,李艳洁1,王  莹1,李  勇2*,何江波1*   

  1. 1昆明学院医学院,昆明 650214;2昆明医科大学附属甘美医院,昆明 650034
  • 出版日期:2026-04-27 发布日期:2026-04-24
  • 基金资助:
    云南省教育厅研究生项目(2024Y764);云南省科技厅基础研究计划(202301AT070056,202401AT070029)

A novel spiroketal compound from marine-derived Streptomyces aureus

JIANG Rui-jin1,QU Tian-tian1,YAN Xiao-mei1,LI Yan-jie1,WANG Ying1,LI Yong2*,HE Jiang-bo1*   

  1. 1School of Medicine,Kunming University,Kunming 650214,China;2The Calmette Affiliated Hospital of Kunming Medical University,Kunming 650034,China
  • Online:2026-04-27 Published:2026-04-24

摘要:

研究海洋来源的金色链霉菌(Streptomyces aureus)次级代谢产物及其细胞毒活性。采用硅胶柱色谱,凝胶柱色谱及半制备液相色谱等分离技术对金色链霉菌发酵物的乙酸乙酯萃取物进行分离,通过波谱学方法、结合参考文献及量子化学计算鉴定其结构,然后对分离得到的化合物进行细胞毒活性测试。最终从该菌发酵液的乙酸乙酯部位分离并鉴定6个化合物,分别为aurelactone A(1)、(3S,4S,5S,7S)-3-hydroxy methyl-7-methyl-1,6-dioxaspiro[4.5]-decan-4-ol(2)、(3R,4S,5S,7S)-3-hydroxymethyl-7-methyl-1,6-dioxaspiro[4.5]decan-4-ol(3)、N-(tetrahydro-2-oxo-3-thienyl)-acetamide(4)、3-[(1-carboxy-vinyl)oxy] benzoic acid(5)、methyl-2-hydroxy-3-(4′-hydroxy)-phenylpropionate(6),其中化合物1为新的螺缩酮化合物。活性结果表明,化合物2对Hela细胞具有微弱的抑制活性,其IC 50为70 ±1.5 μmol/L。

关键词: 金色链霉菌, 螺缩酮类化合物, 化学成分, 结构鉴定

Abstract:

This study investigated the secondary metabolites of the marine-derived Streptomyces aureus and their cytotoxic activities. The ethyl acetate extract of the fermentation products of S. aureus was separated by separation technologies such as silica gel column chromatography, Sephadex LH-20 colume, and semi-preparative HPLC. Their structures were identified by spectroscopic methods, combined with reference literature and quantum chemical calculations. Then, the cytotoxic activity of the separated compounds was tested. Finally, six compounds were isolated and identified from the ethyl acetate fraction of the fermentation broth of this bacterium, namely aurelactone A (1), (3S, 4S, 5S, 7S)-3-hydroxy methyl-7-methyl-1,6-dioxaspiro[4.5]-decan-4-ol (2), (3R, 4S, 5S, 7S)-3-hydroxymethyl-7-methyl-1,6-dioxaspiro[4.5]decan-4-ol (3), N-(tetrahydro-2-oxo-3-thienyl)-acetamide (4), 3-[(1-carboxy-vinyl)oxy] benzoic acid (5), and methyl-2-hydroxy-3-(4′-hydroxy)-phenylpropionate (6). Among them, compound 1 was a new spiroketal compound. The activity results showed that compound 2 had weak inhibitory activity against Hela cells, with an IC₅₀ of 70 ±1.5 μmol/L.

Key words: Streptomyces aureus, spiroketal compounds, chemical constituents, structural elucidation

中图分类号:  R284.2