来自红树林真菌（ZSUH - 36）的两种蒽醌和两种氧杂蒽酮的1H和13C核磁共振谱归属

1H and 13C NMR assignments for two anthraquinones and two xanthones from the mangrove fungus (ZSUH-36).

作者信息

Shao Changlun, She Zhigang, Guo Zhiyong, Peng Hong, Cai Xiaoling, Zhou Shining, Gu Yucheng, Lin Yongcheng

机构信息

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

出版信息

Magn Reson Chem. 2007 May;45(5):434-8. doi: 10.1002/mrc.1974.

DOI:10.1002/mrc.1974

PMID:17372958

Abstract

We report the unambiguous assignments of the (1)H and (13)C NMR spectra of one new natural product, namely, 6,8-di-O-methyl versiconol (1) together with one known anthraquinone aversin (2) and two xanthones 5-methoxysterigmatocystin (3) and sterigmatocystin (4). These compounds were all isolated from the mangrove endophytic fungus ZSUH-36 from the South China Sea. 1D and 2D NMR experiments including COSY, HMQC and HMBC were used to elucidate the structures. Variations in the (1)H NMR spectrum of 6,8-di-O-methyl versiconol (1) were also observed in the temperature range 25-75 degrees C. In addition, the plausible biogenetic path from 1 to 2 is discussed.

摘要

我们报道了一种新天然产物6,8 - 二 - O - 甲基韦西康醇（1）以及一种已知蒽醌阿弗西菌素（2）、两种呫吨酮5 - 甲氧基杂色曲霉素（3）和杂色曲霉素（4）的¹H和¹³C NMR谱的明确归属。这些化合物均从中国南海的红树林内生真菌ZSUH - 36中分离得到。使用包括COSY、HMQC和HMBC在内的一维和二维NMR实验来阐明其结构。在25至75摄氏度的温度范围内，还观察到了6,8 - 二 - O - 甲基韦西康醇（1）的¹H NMR谱的变化。此外，还讨论了从1到2可能的生源合成途径。