天然产物研究与开发 ›› 2022, Vol. 34 ›› Issue (6): 981-986.doi: 10.16333/j.1001-6880.2022.6.010

• 研究简报 • 上一篇    下一篇

蛇足石杉内生真菌Cladosporium tenuissimum MT-35的代谢产物研究

石璠钰1,杨洪芸1,莫   婷2,齐博文1,王雯静1,张蓓蓓1,刘   晓1,史社坡1*   

  1. 1北京中医药大学中药学院中药现代研究中心,北京100029;2宁夏回族医药研究所,银川750021
  • 出版日期:2022-06-28 发布日期:2022-06-30
  • 基金资助:
    国家自然科学基金面上项目(81573312)

Metabolites of endophytic fungus Cladosporium tenuissimum MT-35 from Huperia serrata

SHI Fan-yu1,YANG Hong-yun1,MO Ting2,QI Bo-wen1,WANG Wen-jing1,ZHANG Bei-bei1,LIU Xiao1,SHI She-po1*   

  1. 1Modern Research Center for Traditional Chinese Medicine,School of Chinese Materia Medica,Beijing University of Chinese Medicine,Beijing 100029,China;2Ningxia Hui Medicine Research Institute,Yinchuan 750021,China
  • Online:2022-06-28 Published:2022-06-30

摘要:

为研究蛇足石杉内生真菌极细枝孢菌(Cladosporium tenuissimum MT-35)的代谢产物,本实验采用硅胶柱色谱及半制备液相色谱等方法从蛇足石杉极细枝孢菌C. tenuissimum MT-35的糙米发酵物中分离出10个化合物,根据化合物的理化性质及MS、NMR数据分别鉴定为4-hydroxy-3-methoxy-2(1H)-quinolinone(1)、acropyrone(2)、lumichrome(3)、(1H-indol-3-yl) oxoacetamide(4)、1,6-dihydro-1-methyl-6-oxo-3-pyridinecarboxylic acid(5)、尿嘧啶(6)、过氧化麦角甾醇(7)、麦角固醇(8)、9(Z),12(Z)-十八碳二烯酰胺(9)、8-O-4-dehydrodiferulic acid(10)。除化合物78外,其他化合物均为首次从C. tenuissimum中分离得到。对分离鉴定的化合物进行体外抗炎和抗乙酰胆碱酯酶活性筛选,结果表明化合物3789对脂多糖诱导的小鼠单核巨噬细胞释放一氧化氮具有抑制活性,IC50值分别为36.8±1.0、13.9±0.2、36.6±0.0、53.2±1.4 μmol/L,其余化合物在浓度为100 μmol/L时,对RAW 264.7细胞NO释放无明显抑制活性;化合物3对乙酰胆碱酯酶具有一定的抑制活性,IC50为77.9±11.1 μmol/L,其余化合物在浓度为100 μmol/L时,对乙酰胆碱酯酶无明显抑制活性。

关键词: 蛇足石杉, 内生真菌, 极细枝孢菌, 结构鉴定, 抗炎活性, 抗乙酰胆碱酯酶活性

Abstract:

To study the metabolites of Cladosporium tenuissimum MT-35,an endophytic fungus isolated from Huperzia serrata.The compounds were separated and purified by silica gel column chromatography and semi-preparative HPLC.Ten compounds were isolated from the brown rice fermentation of the endophytic fungus C. tenuissimum MT-35,including 4-hydroxy-3-methoxy-2(1H)-quinolinone (1),acropyrone (2),lumichrome (3),(1H-indol-3-yl) oxoacetamide (4),1,6-dihydro-1-methyl-6-oxo-3-pyridinecarboxylic acid (5),uracil (6),ergosterol peroxide (7),ergosterol (8),9(Z),12(Z)-octadecadienamide (9),8-O-4-dehydrodiferulic acid (10).Except for compounds 7 and 8,other compounds were obtained from C. tenuissimum for the first time.Compounds 3,7,8 and 9 showed inhibitory activity against NO release from RAW 264.7 cells with IC50 values of 36.8±1.0,13.9±0.2,36.6±0.0,53.2±1.4 μmol/L,respectively.Compound 3 showed inhibitory activity against acetylcholinesterase with an IC50 value of 77.9±11.1 μmol/L.

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中图分类号:  R284.2