A new depsidone derivative from mangrove endophytic fungus Aspergillus sp. GXNU-A9
Lili Hao1, Dexiong Zhou1, Xiaoya Qin1
1State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, College of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, P.R. China.
Abstract:
A new tetracyclic depsidone derivative, guanxidone A (1), together with three known metabolites 2-4, was isolated from the mangrove endophytic fungus Aspergillus sp. GXNU-A9. The structure of compound 1 was established by HR-ESI-MS, 1 D and 2 D NMR data, as well as by comparison with literature data. Compounds 1-4 were evaluated for their anti-inflammatory effects on the production of the nitric oxide (NO), and compound 1 significantly reduced the production of NO in lipopolysaccharide (LPS)-stimulated cells with IC50 value of 8.22 µM.
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