Fan J, Liu P, Zhao K, Chen HP. Three previously undescribed metabolites from Cordyceps cicadae JXCH-1, an entomopathogenic fungus.
NATURAL PRODUCTS AND BIOPROSPECTING 2023;
13:46. [PMID:
37919477 PMCID:
PMC10622384 DOI:
10.1007/s13659-023-00410-2]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Accepted: 10/11/2023] [Indexed: 11/04/2023]
Abstract
Three previously undescribed compounds, cordycicadione (1), cordycicadin F (2), and 7-hydroxybassiatin (3), were isolated from the cultures of Cordyceps cicadae JXCH1, an entomopathogenic fungus. Their structures and relative configurations were elucidated primarily by NMR spectroscopic analysis. The absolute configurations of 1 and 2 were determined by ECD calculations. Single-crystal X-ray diffraction method was adopted to determine the absolute configuration of 3. Compound 2 is a polycyclic polyketide with an unusual enol ether moiety and a spiro ring. The compounds obtained in this study were subjected to screening their inhibition against the proliferation of the human lung cancer cell line A549 and the production of nitric oxide in murine macrophages RAW264.7.
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