Journal
HELVETICA CHIMICA ACTA
Volume 98, Issue 6, Pages 800-804Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/hlca.201400328
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Funding
- Natural Science Foundation of China [31330009]
- Ministry of Science and Technology of China [2010CB833802]
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Two new oxepine-containing diketopiperazine-type alkaloids, varioloids A and B (1 and 2, resp.), were isolated from the algal-derived fungus Paecilomyces variotii EN-291. The structures and absolute configurations were determined by detailed interpretation of 1D- and 2D-NMR spectroscopic data and by analysis of acidic hydrolysates. Compounds 1 and 2 exhibited potent activity against the plant-pathogenic fungus Fusarium graminearum with MIC values of 8 and 4 mu g/ml, respectively.
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