Journal
HELVETICA CHIMICA ACTA
Volume 99, Issue 6, Pages 469-481Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/hlca.201500529
Keywords
Trifluoromethylpyridine; Imidazoles; Gold-NHC; Rhodium-NHC; Iridium-NHC; Antitumor activity
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Funding
- Romanian National Authority for Scientific Research [341-/05.10.2011]
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This work presents the synthesis, characterization, and application of several new metal(I) complexes with trifluoromethylpyridine-containing N-heterocyclic carbene (NHC) ligands. The metal of choice was gold(I) for compounds 7-10, rhodium(I) for 11-12, and iridium(I) for 13-14, respectively. The trifluoromethylpyridine moiety was incorporated, along with other biologically active moieties, with the intention of modifying the lipophilicity of the complexes, so that the transport of the active units (M-NHC) through the cell wall barrier is facilitated. The biological activity of the complexes was investigated. In vitro assessment of antitumor activity in a panel of 12 human tumor cell lines by a monolayer assay revealed good potency (mean IC50 12.6m) and tumor selectivity for one compound. The solid-state structures of two solvates of compound 7, one with MeOH and one with THF, were determined by X-ray diffraction analysis.
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