Year : 2016 | Volume
: 12 | Issue : 48 | Page : 259--261
A new antifungal isocoumarin from the endophytic fungus Trichoderma Sp. 09 of Myoporum bontioides A. gray
Wensheng Li, Jiaxin Xu, Fenqi Li, Li Xu, Chunyuan Li
Department of Applied Chemistry, College of Materials and Energy (Formerly College of Science), South China Agricultural University, Guangzhou, China
Background: Myoporum bontioides A. Gray is a commonly used medicinal plant in China. Recently, the chemical and bioactive investigations to the endophytic fungi of this plant have led to several new compounds with antimicrobial and cytotoxic activities. To find out more active molecules, the metabolites of an endophytic fungus, Trichoderma sp. 09 from the root of Myoporum bontioides were investigated. Materials and Methods: The metabolites were isolated by column chromatography on silica gel, and their structures were elucidated on the basis of spectroscopic analysis[one-dimensional (1D), two-dimensional (2D)-nuclear magnetic resonance (NMR), Mass spectrometry (MS)], and by comparison with the published data. The dilution method was used for the evaluation of antifungal activity. Results: Four metabolites were isolated and identified as: dichlorodiaportinolide (1), dichlorodiaportin (2), diaportinol (3), and diaportin (4). Compounds1 and 2 showed weak to high antifungal activities against Colletotrichum musae (Berk. and M. A. Curtis) Arx and Rhizoctonia solani Kühn, as compared with the positive control. Conclusions: Compound 1 was a new isocoumarin being worthy of consideration for the development and research of antifungal agents.
Abbreviations used: IR: Infrared Radiation, HR-ESI-MS: High resolution electrospray ionization mass spectroscopy, LCMS-IT-TOF: Liquid chromatography mass spectroscopy-Ion trap-Time-of-flight, UV: Ultraviolet-visible, HMBC: Heteronuclear multiple bond correlation, NOE: Nuclear Overhauser effect.
Dr. Chunyuan Li
College of Materials and Energy, South China Agricultural University, Guangzhou
|How to cite this article:|
Li W, Xu J, Li F, Xu L, Li C. A new antifungal isocoumarin from the endophytic fungus Trichoderma Sp. 09 of Myoporum bontioides A. gray.Phcog Mag 2016;12:259-261
|How to cite this URL:|
Li W, Xu J, Li F, Xu L, Li C. A new antifungal isocoumarin from the endophytic fungus Trichoderma Sp. 09 of Myoporum bontioides A. gray. Phcog Mag [serial online] 2016 [cited 2022 Aug 19 ];12:259-261
Available from: http://www.phcog.com/article.asp?issn=0973-1296;year=2016;volume=12;issue=48;spage=259;epage=261;aulast=Li;type=0