Abstract
Eight secondary metabolites, including three new azaphilones (chermesinones A-C, 1-3), three new p-terphenyls (6'-O-desmethylterphenyllin, 4; 3-hydroxy-6'-O-desmethylterphenyllin, 5; 3''-deoxy-6'-O-desmethylcandidusin B, 7), and two known p-terphenyls (6, 8), were isolated from the culture of the mangrove endophytic fungus Penicillium chermesinum (ZH4-E2). Their structures were established by spectroscopic analysis. The absolute configuration of 1 was determined by X-ray crystallography. Terphenyls 4, 5, and 6 exhibited strong inhibitory effects against α-glucosidase with IC50 values of 0.9, 4.9, and 2.5 μM, respectively. Terphenyls 7 and 8 showed inhibitory activity toward acetylcholinesterase with IC50 values of 7.8 and 5.2 μM.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Benzopyrans / chemistry
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Benzopyrans / isolation & purification*
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Benzopyrans / pharmacology
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Cholinesterase Inhibitors / chemistry
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Cholinesterase Inhibitors / isolation & purification*
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Cholinesterase Inhibitors / pharmacology*
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Crystallography, X-Ray
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Glycoside Hydrolase Inhibitors*
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Inhibitory Concentration 50
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Molecular Structure
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Oceans and Seas
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Penicillium chrysogenum / chemistry*
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Pigments, Biological / chemistry
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Pigments, Biological / isolation & purification*
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Pigments, Biological / pharmacology
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Rhizophoraceae / microbiology
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Terphenyl Compounds / chemistry
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Terphenyl Compounds / isolation & purification*
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Terphenyl Compounds / pharmacology
Substances
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Benzopyrans
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Cholinesterase Inhibitors
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Glycoside Hydrolase Inhibitors
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Pigments, Biological
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Terphenyl Compounds
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azaphilone