Abstract
Five α-pyrone meroterpenoids, including one new 3-epiarigsugacin E (1) and four known compounds, arisugacin D (2), arisugacin B (3), territrem C (4) and terreulactone C (5) were obtained from the marine fungus Penicillium sp. SK5GW1L. Their structures were identified by MS and NMR experiments, and the absolute configuration of compound 1 was further confirmed by low temperature (150 K) single crystal X-ray diffraction with Cu Kα radiation. Compounds 3, 4 and 5 showed strong inhibitory activities against acetylcholinesterase (AchE) with IC50 values of 3.03, 0.23 and 0.028 μM, respectively.
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