Isolation and Identification of Secondary Metabolites Produced by Phytopathogenic Fungus Corynespora cassiicola from Hevea brasiliensis
文献类型： 外文期刊
作者： Yang, Xiaoyan 1 ; Guo, Zhikai 2 ; Yang, Yang 4 ; Abulaizi, Ailiman 6 ; Xiong, Zijun 2 ; Zhang, Shiqing 2 ; Li, Boxun 4 ; Huang, Guixiu 4 ;
作者机构： 1.Guizhou Univ, Minist Educ, Key Lab Green Pesticide & Agr Bioengn, State Key Lab Breeding Base Green Pesticide & Agr, Guiyang 550025, Peoples R China
2.Chinese Acad Trop Agr Sci, Inst Trop Biosci & Biotechnol, Hainan Key Lab Trop Microbe Resources, Haikou 571101, Peoples R China
3.Hainan Inst Trop Agr Resources, Key Lab Biol & Genet Resources Trop Crops Hainan, Haikou 571101, Peoples R China
4.Chinese Acad Trop Agr Sci, Key Lab Integrated Pest Management Trop Crops, Minist Agr & Rural Affairs, Haikou 571101, Peoples R China
5.Chinese Acad Trop Agr Sci, Environm & Plant Protect Inst, Hainan Key Lab Monitoring & Control Trop Agr Pest, Haikou 571101, Peoples R China
6.Nanjing Univ, Inst Funct Biomol, Sch Life Sci, State Key Lab Pharmaceut Biotechnol, Nanjing 210023, Peoples R China
关键词： Hevea brasiliensis; phytopathogenic fungi; Corynespora cassiicola; Corynesporascaceae; secondary metabolites; phytotoxicity
期刊名称：MOLECULES （ 影响因子：4.927； 五年影响因子：5.11 ）
ISSN：
年卷期： 2022 年 27 卷 21 期
页码：
收录情况： SCI
摘要： The secondary metabolites of the phytopathogenic fungus Corynespora cassiicola CC01 from Hevea brasiliensis were investigated. As a result, two new compounds, 5-acetyl-7-hydroxy-6- methoxybenzofuran-2(3H)-one (1) and (S)-2-(2,3-dihydrofuro [3,2-c]pyridin-2-yl)propan-2-ol (2), together with seven known compounds, 4,6,8-trihydroxy-3,4-dihydronaphthalen-1(2H)-one (3), 3,6,8-trihydroxy-3,4-dihydronaphthalen-1(2H)-one (4), curvulin acid (5), 2-methyl-5-carboxymethyl- 7-hydroxychromone (6), tyrosol (7), p-hydroxybenzoic acid (8) and cerevisterol (9), were isolated from the fermentation extract by comprehensive silica gel, reverse phase silica gel, Sephadex-LH20 column chromatography and high-performance liquid chromatography (HPLC). The structures of these compounds were identified by using high-resolution electrospray mass spectrometry (HRESIMS), nuclear magnetic resonance spectroscopy (NMR), optical rotation, ultraviolet and infrared spectroscopy techniques and a comparison of NMR data with those reported in the literature. Compounds 1 and 2 were new compounds, and compounds 3-9 were discovered from this phytopathogenic fungus for the first time. Compounds 1-9 were tested for phytotoxicity against the fresh tender leaf of Hevea brasiliensis, and the results show that none of them were phytotoxic. Additionally, these compounds were subjected to an antimicrobial assay against three bacteria (E. coli, methicillin-resistant Staphylococcus aureus and Micrococcus luteus), but they showed no activity.
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