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Alexey Nazarov

Cette personne n’est plus à l’EPFL

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Publications associées (37)

Osmium(II)-versus ruthenium(II)-arene carbohydrate-based anticancer compounds: similarities and differences

Paul Joseph Dyson, Christian Hartinger, Alexey Nazarov, Muhammad Hanif

The synthesis and in vitro anticancer activity of OsII-arene complexes with carbohydrate-derived phosphite co-ligands are reported. The compds. were characterized by std. methods and the mol. structure of dichlorido(η6-p-cymene)(3,5,6-bicyclophosphite-1,2- ...

Royal Society of Chemistry2010

Organometallic antitumour agents with alternative modes of action

Paul Joseph Dyson, Christian Hartinger, Alexey Nazarov, Angela Casini

The therapeutic index of drugs that target DNA, a ubiquitous target present in nearly all cells, is low. Nevertheless, DNA has remained the primary target for medicinal chemists developing metal-based anticancer drugs, although DNA has been essentially aba ...

2010

{(1R,2R,4R)-4-Methyl-1,2-cyclohexanediamine}oxalatoplatinum(II): A Novel Enantiomerically Pure Oxaliplatin Derivative Showing Improved Anticancer Activity in Vivo

Christian Hartinger, Alexey Nazarov

Novel derivatives of the clinically established anticancer drug oxaliplatin were synthesized. Cytotoxicity of the compounds was studied in six human cancer cell lines by means of the MTT assay. Additionally, most promising complexes were also investigated ...

2010

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

Transferring the Concept of Multinuclearity to Ruthenium Complexes for Improvement of Anticancer Activity

Kay Severin, Christian Hartinger, Alexey Nazarov, Michael Groessl

Multinuclear platinum anticancer complexes are a proven option to overcome resistance of established anticancer compounds. Transferring this concept to ruthenium complexes led to the synthesis of dinuclear Ru(II)-arene compounds containing a bis(pyridinone ...

2009

Maltol-Derived Ruthenium-Cymene Complexes with Tumor Inhibiting Properties: The Impact of Ligand-Metal Bond Stability on Anticancer Activity In Vitro

Christian Hartinger, Alexey Nazarov

Organometallic rutheniumarene compounds bearing a maltol ligand have been shown to be nearly inactive in in vitro anticancer assays, presumably due to the formation of dimeric Ru-II species in aqueous solutions. In an attempt to stabilize such complexes, [ ...

2009

Influence of the Arene Ligand, the Number and Type of Metal Centers, and the Leaving Group on the in Vitro Antitumor Activity of Polynuclear Organometallic Compounds

Kay Severin, Christian Hartinger, Alexey Nazarov

Dinuclear ruthenium complexes were shown to exhibit strong antiproliferative properties in human tumor cell lines. In order to extend the structure−activity relationships (SARs), a series of new RuII(arene)X complexes (X = Cl, Br, I) linked by pyridinone-b ...

2009

From Pyrone to Thiopyrone Ligands-Rendering Maltol-Derived Ruthenium(II)-Arene Complexes That Are Anticancer Active in Vitro

Christian Hartinger, Alexey Nazarov

Ru(II)-arene complexes with pyrone-derived ligands are rendered active against cancer cells by replacement of the coordinated O,O donor with an S,O donor. The different stabilities of these systems may explain the observed influence of the donor atoms on t ...

2009

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

Tuning the anticancer activity of maltol-derived ruthenium complexes by derivatization of the 3-hydroxy-4-pyrone moiety

Paul Joseph Dyson, Christian Hartinger, Alexey Nazarov

Aldol reaction of allomaltol with arom. aldehydes, e.g., RC6H4CHO, R = H, 4-NO2, 4-F, 2-F and 3,4,5-(MeO)3C5H2CHO, gave 2-(hydroxyphenylmethyl)-3-hydroxy-6-methylpyran-4(1)-ones, maltol-derived ligands. Organometallic Ru(II)-arene complexes, [RuCl2(cymene) ...

2009

Design of ruthenium-based small molecules as potential therapeutic agents

Paul Joseph Dyson, Christian Hartinger, Alexey Nazarov

This presentation will focus on research carried out in our labs. on organometallic compds. based on the ruthenium(II)-arene unit that exhibit promising in vitro and in vivo anticancer activity and potentially overcome the limitations of platinum based ant ...

2009

The Hydration of Chloroacetonitriles Catalyzed by Mono- and Dinuclear Ru-II- and Os-II-Arene Complexes

Christian Hartinger, Alexey Nazarov

The hydration of nitrites to the corresponding amides is all important reaction for both laboratory and industry purposes. The classical synthesis method requires harsh conditions, gives low yields, and is nonselective due to further hydrolysis of the amid ...

2008

Phosphite-derivatized ruthenium-carbohydrate complexes in the catalytic hydration of nitriles

Christian Hartinger, Alexey Nazarov

The synthesis of metal complexes with bioligands is one option to introduce chirally defined ligands to catalysts. Herein, file hydration of nitriles to the corresponding carboxamides by use of ruthenium(H) complexes is described, which were obtained by at ...

2008

Modifying the Structure of Dinuclear Ruthenium Complexes with Antitumor Activity

Kay Severin, Christian Hartinger, Alexey Nazarov

2008

Influence of the Spacer Length on the in Vitro Activity of Dinuclear Ruthenium-Arene Compounds

Kay Severin, Christian Hartinger, Alexey Nazarov

2008

In vitro anticancer activity and biologically relevant metabolization of organometallic ruthenium complexes with carbohydrate-based ligands

Paul Joseph Dyson, Christian Hartinger, Alexey Nazarov, Michael Groessl, Olivier Pierre Zava, Muhammad Hanif, Frédéric Schmitt

The synthesis and in vitro anticancer activity of dihalo(η6-p-cymene)(3,5,6-bicyclophosphite-α-D-glucofuranoside)ruthenium(II) complexes are described. The compds. were characterized by NMR spectroscopy and ESI mass spectrometry, and the mol. structures of ...

2008

Carbohydrate-metal complexes and their potential as anticancer agents

Paul Joseph Dyson, Christian Hartinger, Alexey Nazarov

A review. Platinum complex-based chemotherapy is one of the major treatment options of many malignancies. Although severe side effects occur, and only a limited spectrum of tumors can be cured, Pt compds. are used in every second therapy scheme. Thus, many ...

2008

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