天然产物研究与开发 ›› 2020, Vol. 32 ›› Issue (9): 1522-1528.doi: 10.16333/j.1001-6880.2020.9.010

• 研究简报 • 上一篇    下一篇

白腐真菌Hypocrea lixii SCSIO 41520次级代谢产物及抗菌活性研究

王雪花1,徐新亚2,李易1,姚飞华2,程霞2,漆淑华2,陶曙红1*


  

  1. 1广东药科大学中药学院,广州 510006;2中国科学院南海海洋研究所 中国科学院海洋生物资源可持续利用重点实验室,广州 510301

  • 出版日期:2020-09-28 发布日期:2020-09-25
  • 基金资助:
    广东省基础与应用基础研究基金(2017A030313235)

Secondary metabolites and antimicrobial activities of Hypocrea lixii SCSIO 41520 

WANG Xue-hua1,XU Xin-ya2,LI Yi1,YAO Fei-hua2,CHEN Xia2,QI Shu-hua2,TAO Shu-hong1*#br#

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  1. 1School of Traditional Chinese Medicine,Guangdong Pharmaceutical University,Guangzhou 510006,China;2Key Laboratory of Sustainable Use of Marine Living Resources,South China Sea Institute of Oceanology,Chinese Academy of Sciences,Guangzhou 510301,China

  • Online:2020-09-28 Published:2020-09-25

摘要:

对来源于深圳大亚湾近海水域软珊瑚中分离得到的白腐真菌Hypocrea lixiSCSIO 41520的次级代谢产物及抗菌活性进行研究。采用硅胶柱层析、凝胶Sephadex LH-20柱层析、半制备HPLC等色谱技术对其进行分离纯化,通过1H NMR、13C NMR、MS等波谱技术鉴定化合物结构。共分离鉴定了8个化合物,分别为4-(5,7-dimethoxy-4-oxo-4H-chromen-2-yl)heptanoic acid methyl ester(1)、5-methoxy eugenin(2)、rugulosin(3)、大黄素(4)、3-(5,7-dimethoxy-4-oxo-4H-chromen-2-yl) propanoic acid(5)、comazaphilone C(6)、kasanosin C(7)、comazaphilone E(8),其中化合物1是新化合物。纸片扩散法抗菌实验结果显示,该真菌发酵产物的乙酸乙酯粗提物及各分离组分均有一定的抗菌活性,单体化合物中,化合物3在25 μg/disc的浓度下对金黄色葡萄球菌、枯草芽孢杆菌、大肠杆菌有显著抑制作用,抑菌圈直径分别为16、15、9 mm。

关键词: Hypocrea lixii SCSIO 41520, 真菌, 代谢产物, 抗菌活性

Abstract:

The secondary metabolites and antibacterial activities of Hypocrea lixii SCSIO 41520 were studied.Eight compounds were isolated by chromatography methods,such as silica gel column chromatography,Sephadex LH-20 gel chromatography and pre-HPLC.The structures of these compounds were identified as 4-(5,7-dimethoxy-4-oxo-4H-chromen-2-yl)heptanoic acid methyl ester (1),5-methoxy eugenin (2),rugulosin (3),emodin (4),3-(5,7-dimethoxy-4-oxo-4h-chromen-2-yl) propanoic acid (5),comazaphilone C (6),kasanosin C (7),and comazaphilone E (8) on the basis of spectroscopic analysis.Compund 1 is a new chromone derivative.Antibacterial tests revealed that the ethyl acetate extract and its fractions of this fungal fermentation products had certain antibacterial activity.Compound 3 in the concent of 25 μg/disc had inhibitory effects against Staphylococcus aureus,Bacillus subtilisand Escherichia coli.The diameter of bacteriostatic circles were 16,15 and 9 mm,respectively.

Key words: Hypocrea lixii SCSIO 41520, fungi, metabolites, antimicrobial activity

中图分类号:  R914.4