Abstract
We have already shown that major rice diterpene phytoalexin, momilactone A, was detoxified by Magnaporthe oryzae. We report here the identification by NMR, MS, and chemical synthesis of 3,6-dioxo-19-nor-9β-pimara-7,15-diene (1) as the degradation intermediate. Compound 1 exhibited similar antifungal activity to that of momilactone A, indicating 1 to be a precursor of possible detoxified compounds.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Antifungal Agents / metabolism
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Diterpenes / metabolism*
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Magnaporthe / metabolism*
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Magnaporthe / pathogenicity
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Magnaporthe / physiology
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Oryza / immunology*
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Phytoalexins
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Plant Diseases / immunology
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Plant Diseases / microbiology*
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Sesquiterpenes / metabolism*
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Spectrum Analysis
Substances
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Antifungal Agents
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Diterpenes
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Sesquiterpenes
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momilactone A
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Phytoalexins