Novel Chemotaxonomic Markers of the Alternaria infectoria Species-Group

Two new structurally related metabolites, novae-zelandin A (1) and novae-zelandin B (2), as well as the novel metabolite 4Z-infectopyrone (3) were purified from extracts of filamentous fungi belonging to the Alternaria infectoria species-group. The structures were elucidated by a combination of 1D a...

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Published in:Journal of agricultural and food chemistry 2005-11, Vol.53 (24), p.9431-9435
Main Authors: Christensen, Kathrine B, Van Klink, John W, Weavers, Rex T, Larsen, Thomas O, Andersen, Birgitte, Phipps, Richard K
Format: Article
Language:English
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Summary:Two new structurally related metabolites, novae-zelandin A (1) and novae-zelandin B (2), as well as the novel metabolite 4Z-infectopyrone (3) were purified from extracts of filamentous fungi belonging to the Alternaria infectoria species-group. The structures were elucidated by a combination of 1D and 2D NMR spectroscopic data and MS data. 1−3 are important chemotaxonomic markers of the A. infectoria species-group and exhibit structures similar to those of known biologically active compounds, suggesting that they could be potential phytotoxins. Keywords: Alternaria; chemotaxonomy; α-pyrone; infectopyrone; novae-zelandin; phytotoxin
ISSN:0021-8561
1520-5118
DOI:10.1021/jf0513213