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Vinyl functionalized 5,6-dimethylbenzimidazolium salts: Synthesis and biological activities
(Wiley, 2023) Karaca, Emine O.; Bingol, Zeynebe; Gurbuz, Nevin; Ozdemir, Ismail; Gulcin, Ilhami
A series of vinyl functionalized 5,6-dimethylbenzimidazolium salts are synthesized. All compounds were fully characterized by elemental analyses, MS, H-1-NMR, C-13-NMR, and IR spectroscopy techniques. Enzyme inhibition is a very active area of research in drug design and development. In this study, the synthesized novel benzimidazolium salts were evaluated toward the human erythrocyte carbonic anhydrase I (hCA I), and II (hCA II) isoenzymes, acetylcholinesterase (AChE) and butyrylcholinesterase (BChE) enzymes. They demonstrated highly potent inhibition ability against hCA I with K-i values of 484.8 +/- 62.6-1389.7 +/- 243.2 nM, hCA II with K-i values of 298.9 +/- 55.7-926.1 +/- 330.0 nM, alpha-glycosidase with K-i values of 170.3 +/- 27-760.1 +/- 269 mu M, AChE with K-i values of 27.1 +/- 3-77.6 +/- 1.7 nM, and BChE with K-i values of 21.0 +/- 5-61.3 +/- 15 nM. As a result, novel vinyl functionalized 5,6-dimethylbenzimidazolium salts (1a-g) exhibited effective inhibition profiles toward studied metabolic enzymes. Therefore, we believe that these results may contribute to the development of new drugs particularly to treat some global disorders including glaucoma, Alzheimer's disease, and diabetes.