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Beltrán TF, Zaragoza G, Delaude L. Small iron-carbonyl clusters bearing imidazolium-2-trithioperoxycarboxylate ligands. Dalton Trans 2017; 46:13002-13009. [PMID: 28936533 DOI: 10.1039/c7dt03202a] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The reaction of [Fe2(CO)9] with two representative imidazolium-2-dithiocarboxylate zwitterions derived from common N-heterocyclic carbenes (NHCs) bearing mesityl (IMes) or 2,6-diisopropylphenyl substituents on their nitrogen atoms (IDip) unexpectedly afforded two small bimetallic iron-carbonyl clusters with the generic formula [Fe2(CO)6(μ-κ2-S,S'-κ2-S,S'-S3C·NHC)]. After a brief optimization of the reaction conditions, these two "sulfur-enriched" products were isolated in low yields. They were fully characterized by IR, NMR, UV/Visible, and ESI-MS techniques, and their molecular structures were determined by single crystal X-ray diffraction analysis. The two compounds adopted a butterfly-type disposition in the solid state, with an [Fe2(CO)6] core bridged by the trithioperoxycarboxylate moiety of the in situ generated NHC·CS3 ligands. Bond lengths recorded for the CS3- unit revealed that its negative charge was mostly located on the remote sulfur atom.
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Affiliation(s)
- Tomás F Beltrán
- Laboratory of Organometallic Chemistry and Homogeneous Catalysis, Institut de Chimie (B6a), Allée du six Août 13, Quartier Agora, Université de Liège, 4000 Liège, Belgium.
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2
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Palion-Gazda J, Gryca I, Machura B, Lloret F, Julve M. Synthesis, crystal structure and magnetic properties of the complex [ReCl 3(tppz)]·MeCN. RSC Adv 2015. [DOI: 10.1039/c5ra21466a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
The paper reports the synthesis, X-ray structure and a deep analysis of the variable-temperature magnetic data of the new complex [ReCl3(tppz)]·MeCN being a very scarce example of mononuclear Re(iii) complexes incorporating nitrogen donor ligands.
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Affiliation(s)
- J. Palion-Gazda
- Department of Crystallography
- Institute of Chemistry
- University of Silesia
- 40006 Katowice
- Poland
| | - I. Gryca
- Department of Crystallography
- Institute of Chemistry
- University of Silesia
- 40006 Katowice
- Poland
| | - B. Machura
- Department of Crystallography
- Institute of Chemistry
- University of Silesia
- 40006 Katowice
- Poland
| | - Francesc Lloret
- Departament de Química Inorgànica/Instituto de Ciencia Molecular (ICMol)
- Facultat de Química de la Universitat de València
- 46980 Paterna
- Spain
| | - Miguel Julve
- Departament de Química Inorgànica/Instituto de Ciencia Molecular (ICMol)
- Facultat de Química de la Universitat de València
- 46980 Paterna
- Spain
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Sousa-Pedrares A, Durán-Carril ML, Romero J, García-Vázquez JA, Sousa A. Synthesis and characterization of homoleptic chromium(III) complexes containing pyridine-2-thionato ligands and of the co-crystal (1:1) bis(pyridine-2-thionato)(pyridine-2-dithionato) chromium(III) tris(pyridine-2-thionato) chromium(III). Polyhedron 2013. [DOI: 10.1016/j.poly.2013.06.048] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Salvarese N, Morellato N, Venzo A, Refosco F, Dolmella A, Bolzati C. Synthesis and Characterization of [MIII(PS)2(L)] Mixed-Ligand Compounds (M = Re, 99Tc; PS = Phosphinothiolate; L = Dithiocarbamate) as Potential Models for the Development of New Agents for SPECT Imaging and Radiotherapy. Inorg Chem 2013; 52:6365-77. [DOI: 10.1021/ic400094s] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- N. Salvarese
- Dipartimento di Scienze del
Farmaco, Università di Padova, Via
Marzolo 5, 35131 Padova, Italy
| | - N. Morellato
- Dipartimento di Scienze del
Farmaco, Università di Padova, Via
Marzolo 5, 35131 Padova, Italy
| | - A. Venzo
- ISTM-CNR, Via Marzolo 1, 35131 Padova,
Italy
| | - F. Refosco
- ICIS-CNR, Corso Stati Uniti, 4, 35127 Padova, Italy
| | - A. Dolmella
- Dipartimento di Scienze del
Farmaco, Università di Padova, Via
Marzolo 5, 35131 Padova, Italy
| | - C. Bolzati
- ICIS-CNR, Corso Stati Uniti, 4, 35127 Padova, Italy
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(188)Re-SSS/Lipiodol: Development of a Potential Treatment for HCC from Bench to Bedside. INTERNATIONAL JOURNAL OF MOLECULAR IMAGING 2012; 2012:278306. [PMID: 22518301 PMCID: PMC3299367 DOI: 10.1155/2012/278306] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/12/2011] [Revised: 12/08/2011] [Accepted: 12/13/2011] [Indexed: 12/15/2022]
Abstract
Hepatocellular carcinoma (HCC) is the 5th most common tumour worldwide and has a dark prognosis. For nonoperable cases, metabolic radiotherapy with Lipiodol labelled with β-emitters is a promising therapeutic option. The Comprehensive Cancer Centre Eugène Marquis and the National Graduate School of Chemistry of Rennes (ENSCR) have jointly developed a stable and efficient labelling of Lipiodol with rhenium-188 (Eβmax = 2.1 MeV) for the treatment of HCC. The major “milestones” of this development, from the first syntheses to the recent first injection in man, are described.
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Mononuclear copper(I) complexes of O-t-butyl-1,1-dithiooxalate and of O-t-butyl-1-perthio-1-thiooxalate. Inorganica Chim Acta 2011. [DOI: 10.1016/j.ica.2011.02.037] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Machura B, Mroziński J, Kusz J. Synthesis, characterization and molecular structure of Re(III) complexes containing 2-benzoylpyridine. INORG CHEM COMMUN 2010. [DOI: 10.1016/j.inoche.2009.11.019] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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188Re-loaded lipid nanocapsules as a promising radiopharmaceutical carrier for internal radiotherapy of malignant gliomas. Eur J Nucl Med Mol Imaging 2008; 35:1838-46. [PMID: 18465130 DOI: 10.1007/s00259-008-0735-z] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2007] [Accepted: 01/22/2008] [Indexed: 02/05/2023]
Abstract
PURPOSE Lipid nanocapsules (LNC) entrapping lipophilic complexes of (188)Re ((188)Re(S(3)CPh)(2)(S(2)CPh) [(188)Re-SSS]) were investigated as a novel radiopharmaceutical carrier for internal radiation therapy of malignant gliomas. The present study was designed to evaluate the efficacy of intra-cerebral administration of (188)Re-SSS LNC by means of convection-enhanced delivery (CED) on a 9L rat brain tumour model. METHODS Female Fischer rats with 9L glioma were treated with a single injection of (188)Re-SSS LNC by CED 6 days after cell implantation. Rats were put into random groups according to the dose infused: 12, 10, 8 and 3 Gy in comparison with blank LNC, perrhenate solution (4 Gy) and non-treated animals. The radionuclide brain retention level was evaluated by measuring (188)Re elimination in faeces and urine over 72 h after the CED injection. The therapeutic effect of (188)Re-SSS LNC was assessed based on animal survival. RESULTS CED of (188)Re perrhenate solution resulted in rapid drug clearance with a brain T (1/2) of 7h. In contrast, when administered in LNC, (188)Re tissue retention was greatly prolonged, with only 10% of the injected dose being eliminated at 72 h. Rat median survival was significantly improved for the group treated with 8 Gy (188)Re-SSS LNC compared to the control group and blank LNC-treated animals. The increase in the median survival time was about 80% compared to the control group; 33% of the animals were long-term survivors. The dose of 8 Gy proved to be a very effective dose, between toxic (10-12 Gy) and ineffective (3-4 Gy) doses. CONCLUSIONS These findings show that CED of (188)Re-loaded LNC is a safe and potent anti-tumour system for treating malignant gliomas. Our data are the first to show the in vivo efficacy of (188)Re internal radiotherapy for the treatment of brain malignancy.
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Tisato F, Porchia M, Bolzati C, Refosco F, Vittadini A. The preparation of substitution-inert 99Tc metal-fragments: Promising candidates for the design of new 99mTc radiopharmaceuticals. Coord Chem Rev 2006. [DOI: 10.1016/j.ccr.2006.01.022] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Lepareur N, Noiret N, Jeftic J. Spectroscopic Investigations of Fine‐Tuned Energy Differences in a Series of Substituted Rhenium and Technetium Complexes [M(RPhCS 3) 2(RPhCS 2)] {M=Re, 99Tc; R=H, F, Me, Et, OMe}. SPECTROSCOPY LETTERS 2006. [DOI: 10.1080/00387010500434305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Nicolas Lepareur
- a Ecole Nationale Supérieure de Chimie de Rennes, UMR CNRS 6052, Synthèses et Activations de Biomolécules , Institut de Chimie de Rennes , Rennes , France
| | - Nicolas Noiret
- a Ecole Nationale Supérieure de Chimie de Rennes, UMR CNRS 6052, Synthèses et Activations de Biomolécules , Institut de Chimie de Rennes , Rennes , France
| | - Jelena Jeftic
- a Ecole Nationale Supérieure de Chimie de Rennes, UMR CNRS 6052, Synthèses et Activations de Biomolécules , Institut de Chimie de Rennes , Rennes , France
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Ballot S, Noiret N, Hindré F, Denizot B, Garin E, Rajerison H, Benoit JP. 99mTc/188Re-labelled lipid nanocapsules as promising radiotracers for imaging and therapy: formulation and biodistribution. Eur J Nucl Med Mol Imaging 2006; 33:602-7. [PMID: 16450136 DOI: 10.1007/s00259-005-0007-0] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2005] [Accepted: 09/25/2005] [Indexed: 10/25/2022]
Abstract
PURPOSE This study focuses on a promising carrier system for imaging and therapeutic purposes using lipid nanocapsules. To assess their potential for clinical use, we labelled nanocapsules with (99m)Tc and (188)Re and analysed some kinetic biodistribution parameters after intravenous injection in rats. METHODS Lipophilic complexes [(99m)Tc/(188)Re(S(3)CPh)(2)(S(2)CPh)] ((99m)Tc/(188)Re-SSS) were encapsulated within the nanoparticles during their manufacture with quantitative yield and satisfactory radiochemical purity. Rats were injected intravenously with 3.7 MBq (99m)Tc/(188)Re-labelled nanocapsules and sacrificed at 5, 15 and 30 min and 1, 2, 4, 8, 12, 16, 20 and 24 h. RESULTS Dynamic scintigraphic acquisitions showed predominant hepatic uptake, and ex vivo counting indicated a long circulation time of labelled nanocapsules, with a half-life of 21+/-1 min for (99m)Tc and 22+/-2 min for (188)Re. Very weak urinary elimination was observed, indicating good stability of (99m)Tc and (188)Re labelling. CONCLUSION (99m)Tc/(188)Re-SSS nanocapsules can be obtained with high yield and satisfactory radiochemical purity. The biodistributions of (99m)Tc/(188)Re-labelled nanocapsules are close to those of classical PEG-coated particles and show good stability of (188)Re/(99m)Tc-SSS labelling.
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Affiliation(s)
- Sandrine Ballot
- Ecole Nationale Supérieure de Chimie de Rennes UMR CNRS 6052 'Synthèses et Activations de Biomolécules', Institut de Chimie de Rennes, Avenue du Général Leclerc, 35700, Rennes-Beaulieu, France
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Lepareur N, Mévellec F, Noiret N, Refosco F, Tisato F, Porchia M, Bandoli G. Syntheses and reactivity of 'sulfur rich' Re(iii) and Tc(iii) complexes containing trithioperoxybenzoate, dithiobenzoate and dithiocarbamate ligands. Dalton Trans 2005:2866-75. [PMID: 16094475 DOI: 10.1039/b503938j] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Reduction-substitution reactions of [M(O)Cl(4)](-)(M=Re, (99)Tc) precursors with an excess of substituted dithiobenzoate ligands (R-PhCS(2))(-) in dichloromethane/methanol mixtures afford a series of six-coordinated neutral mixed-ligand complexes of the type M(III)(R-PhCS(3))(2)(R-PhCS(2))(M=Re; Rel--9; M=99)Tc; Tel--9). The coordination sphere is entirely filled by sulfur donor atoms, and the complexes adopt a distorted trigonal prismatic arrangement, as assessed by the X-ray crystal structure analysis of Re(4-Me-PhCS(3))(2)(4-Me-PhCS(2)), Re 2. These compounds show sharp proton and carbon NMR profiles, in agreement with the diamagnetism typical of low spin d(4) trigonal prismatic configurations. The red-ox processes involve reduction of the metal from Re(v) to Re(iii) and oxidation of dithiobenzoate to trithioperoxybenzoate. M2--9 complexes contain a substitution-inert [M(R-PhCS(3))(2)](+) moiety including the metal and two trithioperoxybenzoate fragments, while the third dithiobenzoate ligand is labile. The latter is efficiently replaced by reaction with better nucleophiles such as diethyldithiocarbamate giving a further class of mixed ligand complexes of the type M(III)(R-PhCS(3))(2)(Et(2)NCS(2))(M=Re; Re 10--18; M=(99)Tc; Tc--18), which retain the trigonal prismatic arrangement, as determined by the X-ray analyses of the representative compounds Re(PhCS(3))(2)(Et(2)NCS(2)), Re 10 and (99)Tc(PhCS(3))(2)(Et(2)NCS(2)), Tc 10.
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Affiliation(s)
- Nicolas Lepareur
- Ecole Nationale Supérieure de Chimie de Rennes, UMR CNRS 6052, Synthèses et Activations de Biomolécules, Institut de Chimie de Rennes, Rennes, France.
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A kit formulation for the labelling of lipiodol with generator-produced188Re. J Labelled Comp Radiopharm 2004. [DOI: 10.1002/jlcr.863] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Mevellec F, Roucoux A, Noiret N, Moisan A, Patin H, Duatti A. Synthesis and characterization of new99mTc-radiopharmaceuticals with dithiobenzoate derivatives for the study of septic inflammatory processes. J Labelled Comp Radiopharm 2003. [DOI: 10.1002/jlcr.673] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Mévellec F, Tisato F, Refosco F, Roucoux A, Noiret N, Patin H, Bandoli G. Synthesis and characterization of the "sulfur-rich" bis(perthiobenzoato)(dithiobenzoato)technetium(III) heterocomplex. Inorg Chem 2002; 41:598-601. [PMID: 11825089 DOI: 10.1021/ic0107577] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Franck Mévellec
- Chimie des Biomolécules et des Systèmes Organisés, CNRS ESA 6052, ENSCR, Rennes, France
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