1H and 13C NMR assignments for two new xanthones from the endophytic fungus Xylaria sp FRR 5657

被引：39
|
作者：
Davis, Rohan A. [1 ]
Pierens, Gregory K. [1 ]
机构：
[1] Griffith Univ, Eskitis Inst, Brisbane, Qld 4111, Australia
来源：
MAGNETIC RESONANCE IN CHEMISTRY | 2006年 / 44卷 / 10期
关键词：
H-1; NMR; C-13; gCOSY; gHSQC; gHMBC; natural product; xanthone; Xylaria sp;
D O I：
10.1002/mrc.1872
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The complete H-1 and C-13 NMR assignments are reported for the new natural products, 7-hydroxy-3-(hydroxymethyl)-1-methoxy-9H-xanthen-9-one (1) and 2,5-dihydroxy-8-methoxy-6-methyl-9-oxo-9H-xanthene-1-carboxylic acid (2). Both of these secondary metabolites were isolated from the fermentation culture of the endophytic fungus Xylaria sp. FRR 5657. 1D and 21D NMR experiments that included H-1, gCOSY, gHSQC and gHMBC were used for the determination of the structure and assignment of these xanthones. Copyright (c) 2006 John Wiley & Sons, Ltd.
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收藏
页码：966 / 968
页数：3
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