C. Shao, Chang-Yun Wang, Mei-Yan Wei
Nov 1, 2008
Citations
5
Influential Citations
44
Citations
Quality indicators
Journal
Magnetic Resonance in Chemistry
Abstract
Two new xanthones, 8‐(methoxycarbonyl)‐1‐hydroxy‐9‐oxo‐9H‐xanthene‐3‐carboxylic acid (1) and dimethyl 8‐methoxy‐9‐oxo‐9H‐xanthene‐1, 6‐dicarboxylate (2) and one known xanthone methyl 8‐hydroxy‐6‐methyl‐9‐oxo‐9H‐xanthene‐1‐carboxylate (3) were isolated from the culture broth of the mangrove fungus Penicillium sp. (ZZF 32#) collected from the South China Sea. Their structures were established by comprehensive analysis of one‐dimensional (1D) and two‐dimensional (2D) NMR data. The structure of compound 3 was confirmed by X‐ray crystallography, which led to the suggestion that janthinone (4) might have the same structure as 3. Compounds 1–3 were inactive against KB or KBv200 cells during cytotoxicity evaluations. Copyright © 2008 John Wiley & Sons, Ltd.