Three diketomorpholines from a Penicillium sp. (strain G1071).
Phytochemistry, 2021/9;189:112830.
Al Subeh ZY[1], Raja HA[1], Burdette JE[2], Falkinham JO 3rd[3], Hemby SE[4], Oberlies NH[5]
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PMID: 34157637DOI: 10.1016/j.phytochem.2021.112830
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Abstract
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.
Keywords: Diketomorpholine; Javanicunine; Penicillium; Phenalenones; Pyrrolidinoindoline
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