Journal
NATURAL PRODUCT RESEARCH
Volume 37, Issue 3, Pages 441-448Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/14786419.2021.1978994
Keywords
Algicolous fungus; Aspergillus sp; glyoxylate; enzyme inhibitory activities
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A new glyoxylate-containing benzene derivative (Compound 1) was isolated from the marine algicolous fungus, Aspergillus sp. SCSIO 41304, along with ten known compounds. Compound 1 possesses a rare methyl glyoxylate moiety and shows antibacterial and enzyme inhibitory activities. Among the tested compounds, aspulvinone H (Compound 4) showed moderate inhibition against acetylcholinesterase and pancreatic lipase.
A new glyoxylate-containing benzene derivative, methyl 2-(4-hydroxy-3-(3 '-methyl-2 '-butenyl)phenyl)-2-oxoacetate (1), together with ten known compounds (2-11), were isolated from the marine algicolous fungus, Aspergillus sp. SCSIO 41304. Their planar structures and absolute configurations were elucidated by detailed NMR, MS spectroscopic analysis and comparing with literature data. Compound 1 was isolated as a new fungal secondary metabolite, possessing a methyl glyoxylate moiety R-CO-CO-OCH3, which is rare in natural sources. All the isolated compounds (1-11) were tested for their antibacterial and enzyme inhibitory activities against acetylcholinesterase (AChE) and pancreatic lipase (PL). Among these compounds, aspulvinone H (4) showed moderate inhibition against AChE and PL with IC50 values of 25.95 and 47.06 mu M, respectively. Further molecular docking simulation exhibited that compound 4 could well bind to the catalytic pockets of the AChE and PL.
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