5 years ago

Soluble epoxide hydrolase inhibitory activity of phenolic glycosides from Polygala tenuifolia and in silico approach

Young Ho Kim, Seo Young Yang, Ji Sun Lee, Jin Yeul Ma, Nguyen Thi Minh Nguyet, Le Ba Vinh, Jang Hoon Kim


The goal of this study was to identify soluble epoxide hydrolase (sEH) inhibitors from plants. Our efforts led to the isolation of nine phenolic glycosides 19 from the roots of Polygala tenuifolia Willd. The structures of compounds were determined by spectroscopic methods, including mass spectroscopy and one-dimensional and two-dimensional nuclear magnetic resonance, and compared with published data. All the isolated compounds were evaluated for their inhibitory activity against sEH. The IC50 values for inhibition ranged 6.4 ± 0.4 to 27.2 ± 0.3 µM. Inhibitors 29 were confirmed the interaction with receptor as competitive type. Molecular docking demonstrated that inhibitors 29 could bind sufficiently to the right pocket. Additionally, potential inhibitors (5, 6, and 8) were confirmed to show the flexible movement with the protein in these sites of receptor.

Publisher URL: https://link.springer.com/article/10.1007/s00044-017-2096-2

DOI: 10.1007/s00044-017-2096-2

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