Molecular interaction fields vs. quantum-mechanical-based descriptors in the modelling of lipophilicity of platinum(<scp>iv</scp>) complexes
作者:Giuseppe Ermondi、Giulia Caron、Mauro Ravera、Elisabetta Gabano、Sabrina Bianco、James A. Platts、Domenico Osella
DOI:10.1039/c2dt32360e
日期:——
We report QSAR calculations using VolSurf descriptors to model the lipophilicity of 53 Pt(IV) complexes with a diverse range of axial and equatorial ligands. Lipophilicity is measured using an efficient HPLC method. Previous models based on a subset of these data are shown to be inadequate, due to incompatibility of whole molecule descriptors between carboxylato and hydroxido ligands. Instead, the interaction surfaces of complexes with various probes are used as independent descriptors. Partial least squares modelling using three latent variables results in an accurate (R2 = 0.92) and robust model (Q2 = 0.87) of lipophilicity, that moreover highlights the importance of size and hydrophobicity terms and the modest relevance of hydrogen bonding.
is stronger for the non-methylated derivative with respect to the fully methylated congener. In addition, MM calculations were used to investigate the interactions between DNA and cis -[(P-L-A)PtCl 2 ] complexes [A = en group linked to an antiestrogen-like pharmacophore, P, via a –(CH 2 ) n – spacer ( n = 2, 4, 6, 8 and 10), L].
Fouts, Christine Spellmeyer; Marzilli, Luigi G.; Byrd, R. Andrew, Inorganic Chemistry, 1988, vol. 27, # 2, p. 366 - 376
作者:Fouts, Christine Spellmeyer、Marzilli, Luigi G.、Byrd, R. Andrew、Summers, Michael F.、Zon, Gerald、Shinozuka, Kazuo
DOI:——
日期:——
The interaction of deprotonated guanosine with en-Pt(II) in the ratio 1:1
作者:Alessandro Pasini、Renzo Mena
DOI:10.1016/s0020-1693(00)88517-5
日期:1981.1
Synthesis and reactions of platinum(IV) complexes with sodium ascorbate
作者:Malcolm J Arendse、Gordon K Anderson、Raquel N Majola、Nigam P Rath
DOI:10.1016/s0020-1693(02)01058-7
日期:2002.11
The platinum(IV) complexes [PtCl2(OH)(2)((NN)-N-boolean AND)] ((NN)-N-boolean AND=en, N,N-dmen, N,N'-dmen) were prepared by oxidation of [PtCl2((NN)-N-boolean AND)] with hydrogen peroxide. The complexes were characterized by multinuclear NMR and infrared spectroscopy, as well as microanalysis. The reactions of these compounds with sodium ascorbate were monitored spectroscopically. Reduction of the platinum(IV) complexes by sodium ascorbate occurred only slowly. An oxalatoplatinum(IV) complex [Pt(C2O4)Cl(OH)(N(boolean AND)Ndmen)]. H2O was isolated from the reaction of [PtCl2(OH)(2)(N,N-dmen)] and sodium ascorbate and characterized by an X-ray diffraction study. (C) 2002 Elsevier Science B.V. All rights reserved.