Bioactive secondary metabolites from Talaromyces rugulosus GIZ45-A37 and their anti-inflammatory activity
Hailin Long1, Mengzhen Liu1,2, Shanyue Guan3
1Guangdong Key Laboratory of Animal Conservation and Resource Utilization, Guangdong Public Laboratory of Wild Animal Conservation and Utilization, Institute of Zoology, Guangdong Academy of Sciences, Guangzhou, China.
Abstract:
As part of our plan to discover new bioactive ingredients from entomophagous fungi, a new macrolide compound, talarolide (1), and a new bioactive natural product, talarenal (2), with two known compounds, WF-3681 methy ester (3) and aspergillumarin A (4) were isolated from an insect derived strain Talaromyces rugulosus GIZ45-A37. The structures were determined based on extensive comprehensive spectroscopic (NMR and HR-ESI-MS) analyses and compared with literature values. The relative configuration of 1 was defined by DFT-NMR chemical shift calculations and subsequent DP4/DP4+ probability methods. Compounds 1 and 2 showed inhibitory effect on IL-6 production at 10 and 20 μM in LPS-stimulated beas-2b cells, indicating their potential anti-inflammatory activity.
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