4.6 Article

Novel thiadiazol derivatives; design, synthesis, biological activity, molecular docking and molecular dynamics

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JOURNAL OF MOLECULAR STRUCTURE
卷 1272, 期 -, 页码 -

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ELSEVIER
DOI: 10.1016/j.molstruc.2022.134171

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Thiadiazol; Selective COX-2 inhibition; Molecular docking; Molecular dynamics

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Selective COX-2 inhibitors are commonly used for pain management due to their reduced adverse effects compared to non-selective COX inhibitors. This study synthesized 16 new thiadiazole derivatives and evaluated their COX-1 and COX-2 inhibitory potential. The results showed that compounds 3c and 3d exhibited significant activity against COX-2, with compound 3d being similar to the reference drug celecoxib. Molecular dynamics studies further elucidated the binding mode of compound 3d on COX-2.
Currently, selective COX-2 inhibitors are used as a novel alternative approach in the course of pain man-agement due to their reduced adverse that generally occur after COX-1 inhibition by non-selective COX inhibitors. In this work, 16 new thiadiazole derivatives ( 3a-3p ) were designed, synthesized and biolog-ically evaluated for their COX-1 and COX-2 inhibitory potential using the in vitro fluorometric method. The biological evaluation showed that compounds 3c and 3d displayed significant activity against COX-2 with IC50 values of 0.350 +/- 0.015 mu M and 0.134 +/- 0.004 mu M, respectively, making the compound 3d similar in its activity to the reference drug celecoxib (IC50 = 0.132 +/- 0.005 mu M). Further docking simulation also re-vealed that the most active derivative ( 3d ) interacted with the enzyme active site in a similar manner to celecoxib. The binding modes of the compound on COX-2 were fully elucidated by molecular dynamics studies. (c) 2022 Elsevier B.V. All rights reserved.

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