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Paul Joseph Dyson

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Publications associées (669)

Metal-based Drugs

Paul Joseph Dyson

CSIRO Publishing2010

Metabolization of [Ru(η6-C6H5CF3)(pta)Cl2]: a cytotoxic RAPTA-type complex with a strongly electron withdrawing arene ligand

Paul Joseph Dyson, Anna Katherine Renfrew, Christian Hartinger

The anticancer ruthenium-arene compd. [Ru(η6-C6H5CF3)(pta)Cl2] (pta = 1,3,5-triaza-7-phosphatricyclo[3.3.1.1]decane), termed RAPTA-CF3, with the electron-withdrawing α,α,α-trifluorotoluene ligand, is one of the most cytotoxic RAPTA compds. known. To ration ...

Springer-Verlag2010

An Internal Fluorescent Probe Based on Anthracene to Evaluate Cation-Anion Interactions in Imidazolium Salts

Rosario Scopelliti, Paul Joseph Dyson, Zhaofu Fei, Wee Han Ang, Christian Hartinger, Xuemei Yang

A series of fluorescent imidazolium-based salts contg. the cation [AnCH2MeIm]+ (in which An=anthracene and Im=the imidazolium cation) with Cl-, BF4-, PF6-, SO3CF3-, [N(CN)2]-, [N(SO2CF3)2]-, or PhBF3- anions have been prepd. and characterized. X-ray diffra ...

2010

Experimental and theoretical studies on the mechanism of hydrogenation by η6-arene β-diketiminato -ruthenium and -osmium complexes

Paul Joseph Dyson, Dominique Schreiber, Andrew Douglas Phillips

The β-diketiminate class of ligands is renowned for the stabilization of coordinatively unsatd. main-group and transition metal complexes. Moreover, the application and scope of transition metal β-diketiminate complexes in the catalytic transformation of o ...

2010

Highly selective hydrogenation of aromatic chloronitro compounds to aromatic chloroamines with ionic-liquid-like copolymer stabilized platinum nanocatalysts in ionic liquids

Paul Joseph Dyson, Zhaofu Fei, Ning Yan, Xiao Yuan

Platinum nanoparticles (PtNPs stabilized by an ionic-liq.-like-copolymer (IP) immobilized in various ionic liqs. (ILs)) effectively catalyze the selective hydrogenation of arom. chloronitro compds. to arom. chloroamines, a reaction of considerable com. sig ...

Royal Society of Chemistry2010

Rational Design of Highly Cytotoxic η6-Arene β-Diketiminato-Ruthenium Complexes

Rosario Scopelliti, Paul Joseph Dyson, Andrew Douglas Phillips, Alexey Nazarov, Olivier Pierre Zava

A series of ruthenium-benzene complexes with β-diketiminate ligands modified with electron-withdrawing groups were prepd. and characterized by NMR spectroscopy, mass spectrometry, and single-crystal x-ray diffraction. The complexes are stable in air and un ...

American Chemical Society2010

Proteins as Possible Targets for Cytotoxic trans-Platinum(II) Complexes with Aliphatic Amine Ligands: Further Exceptions to the DNA Paradigm

Paul Joseph Dyson, Angela Casini, Michael Groessl

The reactivity of three cytotoxic trans-PtII complexes bearing aliph. amine ligands, with transferrin and single-stranded oligonucleotides as DNA models, was investigated by ESI-MS and the results obtained are discussed in comparison with cisplatin. Tandem ...

Wiley-Blackwell2010

A Well-Defined Iron Catalyst for the Reduction of Bicarbonates and Carbon Dioxide to Formates, Alkyl Formates, and Formamides

Gabor Laurenczy, Rosario Scopelliti, Paul Joseph Dyson, Matthias Beller

Wiley-VCH Verlag GmbH2010

Highly Cytotoxic Copper(II) Complexes with Modified Paullone Ligands

Paul Joseph Dyson, Olivier Pierre Zava

The reaction of copper(II) chloride or copper(II) acetate with 6-N-(2-N',N'-dimethylaminoethylamino)-7,12-dihydroindolo-[3,2-d][1]benzazepine (HL1), 9-bromo-6-N-(2-N',N'-dimethylaminoethylamino)-7,12-dihydroindolo[3,2-d][1]benzazepine (HL2), N-9-bromo-7,12 ...

2010

Influence of Structural Variation on the Anticancer Activity of RAPTA-Type Complexes: ptn versus pta

Paul Joseph Dyson, Andrew Douglas Phillips, Anna Katherine Renfrew, Christian Hartinger, Alexey Nazarov

[M(η6-arene)(ptn)Cl]X (M = Ru, Os; arene = p-cymene, benzene, toluene, hexamethylbenzene; ptn = 3,7-dimethyl-7-phospha-1,3,5-triazabicyclo[3.3.1]nonane; X = Cl-, BF4-) were prepd. and characterized spectroscopically. X-ray diffraction was addnl. used to ch ...

2009

Structural Studies of the Ionic Liquid 1-Ethyl-3-methylimidazolium Tetrafluoroborate in Dichloromethane Using a Combined DFT-NMR Spectroscopic Approach

Paul Joseph Dyson, Ana Vidis

DFT methods in combination with NMR spectroscopy are used to investigate possible variants of the mol. structure of the ion pairs of the ionic liq. (IL) 1-ethyl-3-methylimidazolium tetrafluoroborate, [EMIM][BF4], in dichloromethane. According to the comput ...

2009

Targeted delivery and controlled release of doxorubicin to cancer cells using modified single wall carbon nanotubes

Paul Joseph Dyson, Zhaofu Fei, Xianfu Zhang

A targeted drug delivery system that is triggered by changes in pH based on single wall carbon nanotubes (SWCNTs), derivatized with carboxylate groups and coated with a polysaccharide material, can be loaded with the anticancer drug doxorubicin (DOX). The ...

2009

Organometallic complexes that interconvert between trimeric and monomeric structures as a function of pH and their effect on human cancer and fibroblast cells

Kay Severin, Rosario Scopelliti, Paul Joseph Dyson, Zacharias Immanuel Grote, Wee Han Ang

Organometallic half-sandwich complexes based on ruthenium with aminomethyl-substituted 3-hydroxy-2-pyridone ligands exist in aqueous solution as monomeric O,O′-chelate complexes or trimeric metallamacrocycles depending upon the pH. We hypothesized that adm ...

2009

Solvent-enhanced coupling of sterically hindered reagents and aryl chlorides using functionalized ionic liquids

Paul Joseph Dyson, Zhaofu Fei, Ning Yan, Yuehui Li, Xuemei Yang

A highly efficient and poison-resistant system for the Suzuki coupling reaction based on hydroxyl-functionalized ionic liq. solvents has been established. Coupling of RC6H4X (X = Br, I, Cl) and 2-bromothiophene with R1C6H4B(OH)2 in 2-hydroxyethyl-substitut ...

2009

Journal club. A chemist highlights promising organometallic drugs

Paul Joseph Dyson

2009

Reactivity of an antimetastatic organometallic ruthenium compound with metallothionein-2: relevance to the mechanism of action

Paul Joseph Dyson, Angela Casini

The reaction of metallothionein-2 (MT-2) with the organometallic antitumour compound [Ru(eta(6)-p-cymene)Cl-2(pta)], RAPTA-C, was investigated using ESI MS and ICP AES. The studies were performed in comparison to cisplatin and significant differences in th ...

2009

Bioorganometallic chemistry-from teaching paradigms to medicinal applications

Paul Joseph Dyson, Christian Hartinger

In undergraduate level organometallic chem. courses students are usually taught that organometallic compds. are toxic and unstable in air and water. While this is true of many complexes, some are also non-toxic and stable in air and water. Indeed, bioorgan ...

Royal Society of Chemistry2009

A Crystallographic Story of Snakes and Ladders: Encapsulated Water Polymers and Rigid Metal Complexes Based on Mono-N-substituted Carboxylate 4,4'-Bipyridine

Rosario Scopelliti, Paul Joseph Dyson, Zhaofu Fei, Wee Han Ang, Andrew Douglas Phillips

A new zwitterionic bidentate ligand was synthesized incorporating a 4,4'-bipyridine core with a carboxylate group as a single building block, specifically designed for the rational construction of supramol. structures (metal-org. frameworks) that are capab ...

2009

Excellent correlation between cathepsin B inhibition and cytotoxicity for a series of palladacycles

Paul Joseph Dyson, Angela Casini, Olivier Pierre Zava

The reaction of the five- or six-membered C,N or C,S-palladacycles [(L)PdCl]2 with PTA (1,3,5-triaza-7-phosphaadamantane) led to the monomeric complexes [(L)Pd(PTA)Cl] 6a, 6b and 7 where LH= N,N-dimethyl-1-phenylmethanamine, benzyl(methyl)sulfane or 1-meth ...

Royal Society of Chemistry2009

Hydrogen storage and delivery: immobilization of a highly active homogeneous catalyst for the decomposition of formic acid to hydrogen and carbon dioxide

Gabor Laurenczy, Paul Joseph Dyson, Weijia Gan

The homogeneous catalytic system, based on water-soluble ruthenium(II)– TPPTS catalyst (TPPTS = meta-trisulfonated triphenylphosphine), selectively decomposes HCOOH into H2 and CO2 in aqueous solution. Although this reaction results in only two gas product ...

Springer Netherlands2009

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