Abstract
Abstract A series of ruthenium(ii) complexes with N-heterocyclic carbene (NHC) ligands of the general type (arene)(NHC)Ru(ii)X2 (where X = halide) (3a–3d) were synthesized and characterized in order to compare their antibacterial activities with benzimidazolium salts 2. Our comparison revealed that ruthenium(ii) NHC complexes 3 were more active than benzimidazolium salts 2. Furthermore, the two complexes 3b and 3d had a potent inhibitory effect against acetylcholinesterase with an IC50 of 4.52 and 4.04 g·mL−1 and against tyrosinase with an IC50 of 20.77 and 25.84 g·mL−1, respectively. In addition, screening of benzimidazolium salts (2a–2d) and their ruthenium(ii) complexes (3a–3d) against colon carcinoma cell lines (HCT-116) and hepatocellular carcinoma cell lines (HepG-2) were studied. The obtained results revealed that complex 3a is the most active against vinblastines.
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