Structural elucidation and NMR assignments of four aromatic lactones from a mangrove endophytic fungus (No. GX4‐1B) |
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| Authors: | Hongbo Huang Qing Li Xiaojun Feng Bin Chen Jun Wang Lan Liu Zhigang She Yongcheng Lin |
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| Affiliation: | 1. School of Chemistry and Chemical Engineering, Sun Yat‐Sen (Zhongshan) University, Guangzhou, 510275, PR China;2. School of Pharmaceutical Sciences, Sun Yat‐Sen (Zhongshan) University, Guangzhou 510006, PR China;3. Key Laboratory of Functional Molecules from Marine Microorganisms, Sun Yat‐Sen University, Education Department of Guangdong Province, Guangzhou 510080, PR China |
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| Abstract: | Two new aromatic lactones, 6‐hydroxy‐4‐hydroxymethyl‐8‐methoxy‐3‐ methylisocoumarin (1) and 1,10‐dihydroxy‐8‐methyl‐dibenz[b, e]oxepin‐6,11‐dione (2), together with two known compounds, 1,10‐dihydroxy‐dibenz[b, e]oxepin‐6,11‐dione (3) and 3‐hydroxymethyl‐6,8‐dimethoxycoumarin (4), were isolated from a mangrove endophytic fungus (No. GX4‐1B) collected from the South China Sea. Their structures were elucidated and the data of 1H and 13C NMR were assigned completely by HREIMS, 1D and 2D NMR experiments including HMQC, HMBC and NOESY. Copyright © 2010 John Wiley & Sons, Ltd. |
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| Keywords: | NMR 1H NMR 13C NMR 2D NMR aromatic lactone isocoumarin coumarin dibenzoxepin derivative marine fungus |
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