Abstract
One strain many compounds (OSMAC) strategy was an effective method to activate the silent biosynthetic genes of microorganisms. Comparison with our previous investigations on the secondary metabolites of the marine-derived fungus Aspergillus sp. SCSIO 41501, in this study, three new cyclopentenone derivatives, aspergispones A-C (1–3), and five new cyclohexenone derivatives, aspergispones D-H (4–8), together with two known analogues, were further isolated from the fungal strain by altering culture medium compositions. The structures of new compounds were elucidated by extensive spectroscopic analysis. And the absolute configurations of 4 and 7 were further confirmed by single-crystal X-ray diffraction experiments.
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