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Structure elucidation of two new xanthone derivatives from the marine fungus Penicillium sp. (ZZF 32#) from the South China Sea

✍ Scribed by Changlun Shao; Changyun Wang; Meiyan Wei; Yucheng Gu; Xuekui Xia; Zhigang She; Yongcheng Lin

Publisher
John Wiley and Sons
Year
2008
Tongue
English
Weight
102 KB
Volume
46
Category
Article
ISSN
0749-1581

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✦ Synopsis

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.

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