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

✍ Scribed by Rohan A. Davis; Gregory K. Pierens

Publisher
John Wiley and Sons
Year
2006
Tongue
English
Weight
125 KB
Volume
44
Category
Article
ISSN
0749-1581

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✦ Synopsis

Abstract

The complete ^1^H and ^13^C NMR assignments are reported for the new natural products, 7‐hydroxy‐3‐(hydroxymethyl)‐1‐methoxy‐9__H__‐xanthen‐9‐one (1) and 2,5‐dihydroxy‐8‐methoxy‐6‐methyl‐9‐oxo‐9__H__‐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 2D NMR experiments that included ^1^H, gCOSY, gHSQC and gHMBC were used for the determination of the structure and assignment of these xanthones. Copyright © 2006 John Wiley & Sons, Ltd.

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