Abstract
15-Deoxyoxalicine B (1) and decaturins A (2) and B (3) have been isolated from Penicillium decaturense and Penicillium thiersii, two previously undescribed species obtained as colonists of wood-decay fungi. The structures were determined by 2D NMR experiments and/or single-crystal X-ray diffraction analysis. These compounds are members of a rare structural class, and decaturins A and B feature a new polycyclic ring system. Decaturin B (3) exhibited potent antiinsectan activity against the fall armyworm (Spodoptera frugiperda).
Publication types
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Research Support, U.S. Gov't, Non-P.H.S.
MeSH terms
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Alkaloids / chemistry*
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Alkaloids / isolation & purification
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Animals
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Crystallography, X-Ray
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Insecticides / chemistry*
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Insecticides / isolation & purification
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Models, Molecular
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Nuclear Magnetic Resonance, Biomolecular
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Penicillium / chemistry*
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Pyrones / chemistry*
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Pyrones / isolation & purification
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Spiro Compounds / chemistry*
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Spiro Compounds / isolation & purification
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Spodoptera
Substances
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15-dexoyoxalicine B
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Alkaloids
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Insecticides
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Pyrones
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Spiro Compounds
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decaturin A
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decaturin B