N-(R)ethanolamine dithiocarbamate ligands and their Ni(II) and Pt(II) complexes. Evaluation of the in vitro anticancer activity of the Pt(II) derivatives
A series of Ni(II) and Pt(II) complexes with DTC ligands including a hydrophilic ethanol moiety [N-(R) ethanolamine (R = Me(1), Et(2), iPr(3), Bn (4))] have been prepared and fully characterized. The antitumor activity of the Pt(II) derivatives has been evaluated against different cancer cell lines, showing complex 4-Pt (including N-(benzyl)ethanolamine DTC ligand DTC-4) to be the most active of the series, exhibiting 100% inhibition on glial cells of nervous central system (U251), leukaemia (K562), colon (HCT-15), breast (MCF-7) and lung (SKLU-1). Finally, the Ni(II) derivatives were explored as catalyst in Suzuki-Miyaura couplings, however only decomposition of the complexes was observed with null conversions to biphenyls. (C) 2017 Elsevier B.V. All rights reserved.
Phosphanegold(I) dithiocarbamates, R3PAu[SC(S)N(iPr)CH2CH2OH] for R = Ph, Cy and Et: Role of phosphane-bound R substituents upon in vitro cytotoxicity against MCF-7R breast cancer cells and cell death pathways
The synthesis and characterisation of R3PAu[S2CN(Pr-i)CH2CH2OH], for R = Ph (1), Cy (2) and Et (3)4, is reported. Compounds 1-3 are cytotoxic against the doxorubicin-resistant breast cancer cell line, MCF-7R, with 1 exhibiting greater potency and cytotoxicity than either of doxorubicin and cisplatin. Based on human apoptosis PCR-array analysis, caspase activities, DNA fragmentation, cell apoptotic assays, intracellular reactive oxygen species (ROS) measurements and human topoisomerase I inhibition, induction of apoptosis by 1, and necrosis by 2 and 3, are demonstrated, by both extrinsic and intrinsic pathways. Compound 1 activates the p53 gene, 2 activates only the p73 gene, whereas 3 activates both the p53 and p73 genes. Compounds 1 and 3 activate NF-kappa B, and each inhibits topoisomerase I. (C) 2013 Elsevier Masson SAS. All rights reserved.
Supramolecular Isomerism in a Cadmium Bis(<i>N</i>-Hydroxyethyl, <i>N</i>-isopropyldithiocarbamate) Compound: Physiochemical Characterization of Ball (<i>n</i> = 2) and Chain (<i>n</i> = ∞) Forms of {Cd[S<sub>2</sub>CN(iPr)CH<sub>2</sub>CH<sub>2</sub>OH]<sub>2</sub>·solvent}<sub><i>n</i></sub>
作者:Yee Seng Tan、Anna L. Sudlow、Kieran C. Molloy、Yui Morishima、Kiyoshi Fujisawa、Wendy J. Jackson、William Henderson、Siti Nadiah Binti Abdul Halim、Seik Weng Ng、Edward R.T. Tiekink
DOI:10.1021/cg400453x
日期:2013.7.3
Needles of [Cd[S2CN(ipr)CH2CH2OH](2)}(3)center dot MeCN](infinity) (2) were harvested from a dry acetonitrile solution of Cd[S2CN(iPr)-CH2CH2OH](2) after one or two days and proved to be a coordination polymer in which all dithiocarbamate ligands are mu(2),kappa(2)-tridentate, bridging two cadmium atoms and simultaneously chelating one of these. If the same solution was allowed to stand for at least several days, 2 is replaced by blocks comprising a supramolecular isomer of 2, dimeric 1, with formula Cd[S2CN(iPr)CH2CH2OH2]}(2)center dot 2H(2)O center dot 2MeCN, and two ligands coordination mu(2),kappa(2) as in 2 and the other two purely kappa(2)-chelating. The time dependency correlates with the pivotal role of water in driving the conversion of "chain" 2 to "ball" 1; crystals of 2 could not be isolated from "wet" acetonitrile. When each of 1 and 2 are dissolved in solution, they exhibit comparable spectroscopic attributes (H-1, C-13, and Cd-113 NMR and UV/vis), indicating the solution structures are the same. Both 1 and 2 are luminescent in the solid state with 1 being significantly brighter than 2. Greenockite Cds nanoparticles are generated by the thermal decomposition of both a and 2.