Novel Second-Generation Di-2-Pyridylketone Thiosemicarbazones Show Synergism with Standard Chemotherapeutics and Demonstrate Potent Activity against Lung Cancer Xenografts after Oral and Intravenous Administration in Vivo
摘要:
We developed a series of second-generation di-2-pyridyl ketone thiosemicarbazone (DpT) and 2-benzoylpyridine thiosemicarbazone (BpT) ligands to improve the efficacy safety profile of these potential antitumor agents. Two novel DpT analogues, Dp4e4mT and DpC, exhibited pronounced and selective activity against human lung cancer xenografts in vivo via the intravenous and oral routes. Importantly, these analogues did not induce the cardiotoxicity observed at high nonoptimal doses of the first-generation DpT analogue, Dp44mT. The Cu(II) complexes of these ligands exhibited potent antiproliferative activity having redox potentials in a range accessible to biological reductants. The activity of the copper complexes of Dp4e4mT and DpC against lung cancer cells was synergistic in combination with gemcitabine or cisplatin. It was demonstrated by EPR spectroscopy that dimeric copper compounds of the type [CuLCl](2), identified crystallographically, dissociate in solution to give monomeric 1:1 Cu:ligand complexes. These monomers represent the biologically active form of the complex.
[EN] THIOSEMICARBAZONE COMPOUNDS AND USE IN THE TREATMENT OF CANCER<br/>[FR] COMPOSÉS DE THIOSEMICARBAZONE ET UTILISATION DANS LE TRAITEMENT DU CANCER
申请人:RICHARDSON DES R
公开号:WO2012079128A1
公开(公告)日:2012-06-21
The present invention relates to dipyridyl thiosemicarbazone compounds of formula (I): wherein R1 is cyclohexyl or ethyl; as well as pharmaceutical compositions containing those compounds, and the use of those compounds and compositions in the treatment of cancer.
THIOSEMICARBAZONE COMPOUNDS AND USE IN THE TREATMENT OF CANCER
申请人:Richardson, Des R
公开号:EP2651894A1
公开(公告)日:2013-10-23
US8927580B2
申请人:——
公开号:US8927580B2
公开(公告)日:2015-01-06
Novel Second-Generation Di-2-Pyridylketone Thiosemicarbazones Show Synergism with Standard Chemotherapeutics and Demonstrate Potent Activity against Lung Cancer Xenografts after Oral and Intravenous Administration in Vivo
作者:David B. Lovejoy、Danae M. Sharp、Nicole Seebacher、Peyman Obeidy、Thomas Prichard、Christian Stefani、Maram T. Basha、Philip C. Sharpe、Patric J. Jansson、Danuta S. Kalinowski、Paul V. Bernhardt、Des R. Richardson
DOI:10.1021/jm300768u
日期:2012.8.23
We developed a series of second-generation di-2-pyridyl ketone thiosemicarbazone (DpT) and 2-benzoylpyridine thiosemicarbazone (BpT) ligands to improve the efficacy safety profile of these potential antitumor agents. Two novel DpT analogues, Dp4e4mT and DpC, exhibited pronounced and selective activity against human lung cancer xenografts in vivo via the intravenous and oral routes. Importantly, these analogues did not induce the cardiotoxicity observed at high nonoptimal doses of the first-generation DpT analogue, Dp44mT. The Cu(II) complexes of these ligands exhibited potent antiproliferative activity having redox potentials in a range accessible to biological reductants. The activity of the copper complexes of Dp4e4mT and DpC against lung cancer cells was synergistic in combination with gemcitabine or cisplatin. It was demonstrated by EPR spectroscopy that dimeric copper compounds of the type [CuLCl](2), identified crystallographically, dissociate in solution to give monomeric 1:1 Cu:ligand complexes. These monomers represent the biologically active form of the complex.