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Abstract
One new hydronaphthalenone derivative (1) was isolated from the broth extract of the endophytic fungus Daldinia eschscholtzii PSU-STD57 together with five known compounds, isosclerone (2), 8-methoxy-1-naphthol, 1,8-dimethoxynaphthalene, 2,6-dihydroxyphenyl-1-butan-1-one and tyrosol. The structures were assigned by spectroscopic methods. All the compounds were tested for antimicrobial activity against Staphylococcus aureus, methicillin-resistant S. aureus and Microsporum gypseum.
Disclosure statement
No potential conflict of interest was reported by the authors.
Additional information
Funding
W. Kongyen thanks the Thailand Research Fund for the TRF Senior Research Scholar [grant number RTA5480002] to Prof. V. Rukachaisirikul.