Chevalones H-M: Six New α-Pyrone Meroterpenoids from the Gorgonian Coral-Derived Fungus SCSIO 7S2001.

Six new α-pyrone meroterpenoid chevalones H-M (-), together with six known compounds (-), were isolated from the gorgonian coral-derived fungus SCSIO 7S2001 collected from Mischief Reef in the South China Sea. Their structures, including absolute configurations, were elucidated on the basis of spectroscopic analysis and X-ray diffraction data. Compounds - and showed different degrees of antibacterial activity with MIC values of 6.25-100 μg/mL. Compound exhibited potent cytotoxicity against SF-268, MCF-7, and A549 cell lines with IC values of 12.75, 9.29, and 20.11 μM, respectively.