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

被引：62

作者：

Shao, Changlun

She, Zhigang

Guo, Zhiyong

Peng, Hong

Cai, Xiaoling

Zhou, Shining

Gu, Yucheng

Lin, Yongcheng ^{[1
]}

机构：

[1] Sun Yat Sen Univ, Sch Chem & Chem Engn, Guangzhou 510275, Peoples R China

[2] Sun Yat Sen Univ, Coll Life Sci, Guangzhou 510275, Peoples R China

[3] Syngenta, Jealotts Hill Int Res Ctr, Bracknell RG42 6EY, Berks, England

来源：

MAGNETIC RESONANCE IN CHEMISTRY | 2007年 / 45卷 / 05期

关键词：

NMR; H-1; C-13; 2D NMR; anthraquinone; xanthone; secondary metabolites; variable temperature; structure elucidation;

D O I：

10.1002/mrc.1974

中图分类号：

O6 [化学];

学科分类号：

0703 [化学];

摘要：

We report the unambiguous assignments of the H-1 and C-13 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 1H 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. Copyright (c) 2007 John Wiley & Sons, Ltd.

引用

页码：434 / 438

页数：5