Diversified Chaetoglobosins from the Marine-Derived Fungus sp. SCSIO41202.

Two undescribed cytochalasins, emeriglobosins A () and B (), together with nine previously reported analogues (-) and two known tetramic acid derivatives (, ) were isolated from the solid culture of sp. SCSIO41202. Their structures, including the absolute configurations of their stereogenic carbons, were fully elucidated based on spectroscopic analysis and the calculated ECD. Some of the isolated compounds were evaluated for their cytotoxicity and enzyme inhibitory activity against acetylcholinesterase (AChE) in vitro. Among them, showed potent AChE inhibitory activity, with an IC value of 1.31 μM, and showed significant cytotoxicity against PC-3 cells, with an IC value of 2.32 μM.