期刊
MARINE DRUGS
卷 20, 期 8, 页码 -出版社
MDPI
DOI: 10.3390/md20080475
关键词
sponge-derived fungus; Arthrinium sp; carboxamides; acetylcholinesterase
资金
- Guangdong Local Innovation Team Program [2019BT02Y262]
- National Natural Science Foundation of China [U20A20101, 81973235]
- K.C. Wong Education Foundation [GJTD-2020-12]
- Guangzhou Science and Technology Project [202102080478]
- Guangdong Basic and Applied Basic Research Foundation [2021B1515120046, 2020A1515010997, 2019B151502042]
- Liao Ning Revitalization Talents Program [XLYC1802037]
New carboxamides and a polyketide were isolated and identified from the sponge-derived fungus Arthrinium sp. SCSIO 41421. Their structures and absolute configurations were determined, and preliminary bioactivity screening showed enzyme inhibitory activities against acetylcholinesterase for some of the compounds.
New carboxamides, (+/-)-vochysiamide C (1) and (+)-vochysiamide B (2), and a new polyketide, 4S,3aS,9aR-3a,9a-deoxy-3a hydroxy-1-dehydroxyarthrinone (3), were isolated and identified from the sponge-derived fungus Arthrinium sp. SCSIO 41421, together with other fifteen known natural products (4-18). Their structures including absolute configurations were determined by detailed NMR, MS spectroscopic analyses, calculated electronic circular dichroism (ECD), as well as quantum-chemical NMR calculations. Preliminary bioactivity screening and molecular docking analysis revealed that several natural products exhibited obvious enzyme inhibitory activities against acetylcholinesterase (AChE), such as 2,3,6,8-tetrahydroxy-1-methylxanthone (4) with an inhibitory rate 86% at 50 mu g/mL.
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