Synthesis, characterisation and biological activity of gold(III) catecholate and related complexes
摘要:
The reactions of the cyclometallated gold(III) complexes [LAuCl2] [L = 2-(dimethylaminomethyl)phenyl, 2-benzylpyridyl or 2-anilinopyridyl] with catechol, tetrachlorocatechol, or the cyclic alpha,beta-diketone SCH(CO2Et)C(O)C(O)CH(CO2Et) give stable complexes containing five-membered Au-O-C-C-O rings. These represent the first examples of well-characterised gold(III) catecholate complexes. Similarly, reactions with 2-acetamidophenol [HOC6H4NHC(O)CH3] give complexes with the related Au-N-C-C-O ring. The complexes were characterised by NMR spectroscopy, electrospray ionisation mass spectrometry, elemental microanalysis, and in the case of the complex [(2-benzylpyridyl)Au{OC6H4NC(O)CH3}] by an X-ray crystal structure determination. Several complexes show high activity towards P388 murine leukemia cells. (C) 2003 Elsevier B.V. All rights reserved.
Synthesis, crystal structure and electrospray mass spectrometric study of the rhodium(<scp>III</scp>) dioxolene complex [Rh{OCC(CO<sub>2</sub>Et)SC(CO<sub>2</sub>Et)CO}(η<sup>5</sup>-C<sub>5</sub>Me<sub>5</sub>)(PPh<sub>3</sub>)]
作者:William Henderson、John Fawcett、Raymond D. W. Kemmitt、David R. Russell
DOI:10.1039/dt9950003007
日期:——
on [RhO[graphic omitted]O}(η5-C5Me5)(PPh3)] reveals the expected pianostool co-ordination about the rhodium centre, which is tipped out of the otherwise almost planar dioxolene system. Electrospray mass spectrometry has been used to probe the co-ordinationchemistry, specifically demonstrating that the triphenylphosphine ligand is labile, and can be trapped by such reagents as H2O2, S8, Se and AgNO3
Synthesis, characterisation and biological activity of gold(III) catecholate and related complexes
作者:Carol H.A Goss、William Henderson、Alistair L Wilkins、Cameron Evans
DOI:10.1016/s0022-328x(03)00585-0
日期:2003.8
The reactions of the cyclometallated gold(III) complexes [LAuCl2] [L = 2-(dimethylaminomethyl)phenyl, 2-benzylpyridyl or 2-anilinopyridyl] with catechol, tetrachlorocatechol, or the cyclic alpha,beta-diketone SCH(CO2Et)C(O)C(O)CH(CO2Et) give stable complexes containing five-membered Au-O-C-C-O rings. These represent the first examples of well-characterised gold(III) catecholate complexes. Similarly, reactions with 2-acetamidophenol [HOC6H4NHC(O)CH3] give complexes with the related Au-N-C-C-O ring. The complexes were characterised by NMR spectroscopy, electrospray ionisation mass spectrometry, elemental microanalysis, and in the case of the complex [(2-benzylpyridyl)AuOC6H4NC(O)CH3}] by an X-ray crystal structure determination. Several complexes show high activity towards P388 murine leukemia cells. (C) 2003 Elsevier B.V. All rights reserved.