Add time:09/05/2019         Source:sciencedirect.com

In this work, a series of novel indole-2-amide compounds were designed, synthesized, characterized and the anti-inflammatory activity in vivo were evaluated. Compounds 8a, 10b, 12h, and 12l exhibited marked anti-inflammatory activity in 2,4-Dinitrofluorobenzenethe (DNFB) - induced mice auricle edema model. Further, compounds 8a, 10b and 12h exhibited potential in vitro COX-2 inhibitory activity (IC50 = 21.86, 23.3 and 23.21 nM, respectively), while the reference drug celecoxib was 11.20 nM. The most promising compound 10b was exhibited the highest selectivity for COX-2 (selectivity index (COX-1/COX-2) = 17.45) and moderate 5-LOX inhibitory activity (IC50 = 66 nM), which comparable to positive controlled zileuton (IC50 = 38.91 nM). In addition, the test results showed compounds 10b and 12h no significant cytotoxic activity on normal cells (RAW264.7). Further, at the active sites of the COX-1, COX-2 co-crystals, 3b and 4l showed higher binding forces in the molecular docking study, which consistent with the results of in vitro experiments. These results demonstrated that these compounds had dual inhibitory activity of COX/5-LOX, providing clues for further searching for safer and more effective anti-inflammatory drugs.

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