1H and 13C NMR assignments for two oxaphenalenones bacillosporin C and D from the mangrove endophytic fungus SBE-14.

Zhiyong Guo, Changlun Shao, Zhigang She, Xiaoling Cai, Fan Liu, L L P Vrijimoed, Yongcheng Lin

School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou 510275, PR China.

Magnetic resonance in chemistry : MRC 2007 May

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The complete (1)H and (13)C NMR assignments are reported for the novel natural product Bacillosporin D together with the known compound Bacillosporin C. These compounds containing seven rings were isolated from the mangrove endophytic fungus SBE-14 from the South China Sea. 1D and 2D NMR experiments, including COSY, HMQC and HMBC were used to the determination of the structures and NMR assignments. It is proposed that 1 was biogenetically produced by transforming 2. Transforming a lactone to an anhydride is unusual in nature. Copyright (c) 2007 John Wiley & Sons, Ltd.

Citation

Zhiyong Guo, Changlun Shao, Zhigang She, Xiaoling Cai, Fan Liu, L L P Vrijimoed, Yongcheng Lin. 1H and 13C NMR assignments for two oxaphenalenones bacillosporin C and D from the mangrove endophytic fungus SBE-14. Magnetic resonance in chemistry : MRC. 2007 May;45(5):439-41