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A Customizable Approach for the Enzymatic Production and Purification of Diterpenoid Natural Products
Published on: October 4, 2019
Anti-Inflammatory Sesquiterpenes from Fruiting Bodies of Schizophyllum commune
Tao Chen1, Yufeng Liu1, Buping Ma2
1School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China.
Abstract:
Schizophyllum commune, a fleshy fungus, is an important medicinal and food-homologous mushroom in China. In this work, eight undescribed sesquiterpenes schizomycins A-H (1-8) and one new meroterpenoid schizomycin I (9) together with three known analogues (10-12) were isolated from fruiting bodies of S. commune. Their planar structures were established by extensive spectroscopic and mass spectrometric data. The absolute configurations of compounds 1, 2, and 4 were determined by single crystal X-ray diffraction, and compounds 3 and 5-9 were confirmed by electronic circular dichroism calculations. Anti-inflammatory activities of all isolated compounds were evaluated for their inhibitory effects on IL-6 and IL-1β production in RAW 264.7 cells. Among them, compound 7 exhibited significant IL-6 inhibitory activity with an IC50 value of 3.6 μM. The results of molecular docking showed that compound 7 interacts with amino acid residues (Gly117, Lys118, Asp120, Thr166, and Try168) of the IL-6 receptor protein through hydrogen bonding.
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