来自红树林内生真菌SBE-14的两种氧杂菲醌类化合物芽孢杆菌素C和D的1H和13C核磁共振谱峰归属

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

作者信息

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

机构信息

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

出版信息

Magn Reson Chem. 2007 May;45(5):439-41. doi: 10.1002/mrc.1976.

DOI:10.1002/mrc.1976

PMID:17372959

Abstract

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.

摘要

报道了新型天然产物芽孢杆菌素D以及已知化合物芽孢杆菌素C的完整氢谱（¹H）和碳谱（¹³C）核磁共振化学位移归属。这些含有七个环的化合物是从中国南海红树林内生真菌SBE - 14中分离得到的。利用包括COSY、HMQC和HMBC在内的一维和二维核磁共振实验确定结构和核磁共振化学位移归属。推测化合物1是由化合物2通过生物转化生成的。内酯转化为酸酐在自然界中并不常见。