Unraveling the numerous biosynthetic products of the marine sediment-derived fungus, Aspergillus insulicola

► Seven compounds were isolated from a marine sediment-derived fungus, Aspergillus insulicola. ► Pre-sclerotiotide F (3) was a new tripeptide. ► Compounds 3 and 5 were the N-demethyl analogs of 4 and 6. ► Cytotoxicities of compounds 1-7 were measured in vitro against selected cancer cells.