Journal
ORGANOMETALLICS
Volume 37, Issue 10, Pages 1575-1584Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.organomet.8b00153
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- University of Auckland (University of Auckland Doctoral Scholarship)
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Organoruthenium compounds have been widely investigated for their anticancer activity. Here we use one of the classic ligand classes found in organometallics, i.e., N-heterocyclic carbenes (NHC), and coordinate them to the Ru(eta(6)-p-cymene) scaffold as N,C-bidentate ligands substituted with a pyridyl moiety. Introduction of different substituents gave compounds with a wide variety of properties. We investigated their stability in solution and in the presence of biomolecules, in vitro anticancer activity, and cellular uptake to rationalize their biological properties in dependence on the structure. A clear effect of their structure on the stability in water and DMSO was found for some derivatives, which was reflected in the reactivity to biomolecules that was determined with selected representatives of the compound classes. The antiproliferative activity of the compounds was widely dependent on the lipophilicity of the N,C-bidentate ligand, but as cellular accumulation studies revealed, lipophilicity does not provide the full picture and additional effects must be responsible for the anticancer activity.
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