Three previously undescribed diketomorpholine natural products, along with the known phenalenones, herqueinone and norherqueinone, were isolated from the mycoparasitic fungal strain G1071, which was identified as a Penicillium sp. in the section Sclerotiora. The structures were established by analyzing NMR data and mass spectrometry fragmentation patterns. The absolute configurations of deacetyl-javanicunine A, javanicunine C, and javanicunine D, were assigned by examining ECD spectra and Marfey's analysis. The structural diversity generated by this fungal strain was interesting, as only a few diketomorpholines (~17) have been reported from nature.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8292221 | PMC |
| http://dx.doi.org/10.1016/j.phytochem.2021.112830 | DOI Listing |
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Three diketomorpholines from a Penicillium sp. (strain G1071).
Phytochemistry
September 2021
Department of Chemistry and Biochemistry, University of North Carolina at Greensboro, Greensboro, NC, United States. Electronic address:
Three previously undescribed diketomorpholine natural products, along with the known phenalenones, herqueinone and norherqueinone, were isolated from the mycoparasitic fungal strain G1071, which was identified as a Penicillium sp. in the section Sclerotiora. The structures were established by analyzing NMR data and mass spectrometry fragmentation patterns.
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