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Sakuma M, Haraguchi R. Charge-Enhanced Reactivity of Esters by a Cationic Substituent. Org Lett 2024; 26:6148-6152. [PMID: 39008814 DOI: 10.1021/acs.orglett.4c01962] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/17/2024]
Abstract
In this study, the high electrophilicity of carbonyl carbons attached to cationic heterocycles was observed. Triazolium-substituted esters underwent catalyst-free amidation with aliphatic amines at -50 °C and reduction with NaBH4 at -100 °C. The origin and generality of the high reactivity of these esters were systematically investigated. The findings of this work were utilized for the postmodification of N-heterocyclic carbenes, which are utilized as promising ligands in a wide range of transition-metal-catalyzed reactions.
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Affiliation(s)
- Masaaki Sakuma
- Department of Applied Chemistry, Graduate School of Engineering, Chiba Institute of Technology, 2-17-1 Tsudanuma, Narashino, Chiba 275-0016, Japan
| | - Ryosuke Haraguchi
- Department of Applied Chemistry, Graduate School of Engineering, Chiba Institute of Technology, 2-17-1 Tsudanuma, Narashino, Chiba 275-0016, Japan
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2
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Maier T, Wutschitz J, Gajic N, Hejl M, Cseh K, Mai S, Jakupec MA, Galanski MS, Keppler BK. Not the usual suspect - an unexpected organometallic product during the synthesis of cytotoxic platinum(II) complexes. Dalton Trans 2023; 52:16326-16335. [PMID: 37855721 DOI: 10.1039/d3dt01736b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2023]
Abstract
The reaction of (1R,2R)-(cyclohexane-1,2-diamine)dichloridoplatinum(II) with maleic acid unexpectedly resulted in the formation of an organometallic platinum(II) complex featuring a C,O-coordinating ligand. Additionally, a small series of close derivatives with increasing lipophilicity was synthesized. All complexes were fully characterized by multinuclear one- and two-dimensional (1H, 13C, 15N, and 195Pt) NMR spectroscopy, high resolution mass spectrometry, and in one case by X-ray diffraction. The lipophilicity and the impact on the DNA secondary structure as well as the cytotoxic properties in three human cancer cell lines (A549, SW480, and CH1/PA-1) were investigated. Unexpectedly, no clear-cut trend in cytotoxicity was observed with increasing lipophilicity. Also unexpectedly, the complexes showed only a low potential to inhibit cancer cell growth and no sign of interaction with DNA, in sharp contrast to the parent drug oxaliplatin, which seems to be caused by the low reactivity of the investigated compounds.
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Affiliation(s)
- Thomas Maier
- University of Vienna, Faculty of Chemistry, Department of Inorganic Chemistry, Waehringer Strasse 42, 1090 Vienna, Austria.
- University of Vienna, Doctoral School in Chemistry (DoSChem), Waehringer Strasse 42, 1090 Vienna, Austria
| | - Judith Wutschitz
- University of Vienna, Faculty of Chemistry, Department of Inorganic Chemistry, Waehringer Strasse 42, 1090 Vienna, Austria.
| | - Natalie Gajic
- University of Vienna, Faculty of Chemistry, Department of Inorganic Chemistry, Waehringer Strasse 42, 1090 Vienna, Austria.
| | - Michaela Hejl
- University of Vienna, Faculty of Chemistry, Department of Inorganic Chemistry, Waehringer Strasse 42, 1090 Vienna, Austria.
| | - Klaudia Cseh
- University of Vienna, Faculty of Chemistry, Department of Inorganic Chemistry, Waehringer Strasse 42, 1090 Vienna, Austria.
| | - Sebastian Mai
- University of Vienna, Faculty of Chemistry, Department of Theoretical Chemistry, Waehringer Strasse 17, 1090 Vienna, Austria
| | - Michael A Jakupec
- University of Vienna, Faculty of Chemistry, Department of Inorganic Chemistry, Waehringer Strasse 42, 1090 Vienna, Austria.
- Research Cluster "Translational Cancer Therapy Research", University of Vienna, Waehringer Strasse 42, 1090 Vienna, Austria
| | - Mathea S Galanski
- University of Vienna, Faculty of Chemistry, Department of Inorganic Chemistry, Waehringer Strasse 42, 1090 Vienna, Austria.
| | - Bernhard K Keppler
- University of Vienna, Faculty of Chemistry, Department of Inorganic Chemistry, Waehringer Strasse 42, 1090 Vienna, Austria.
- Research Cluster "Translational Cancer Therapy Research", University of Vienna, Waehringer Strasse 42, 1090 Vienna, Austria
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3
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Fernandez de Larrinoa P, Parmentier J, Kichler A, Achard T, Dontenwill M, Herold-Mende C, Fournel S, Frisch B, Heurtault B, Bellemin-Laponnaz S. Triphenylphosphonium-functionalized N-heterocyclic carbene platinum complexes [(NHC-TPP +)Pt] induce cell death of human glioblastoma cancer stem cells. Int J Pharm 2023:123071. [PMID: 37244463 DOI: 10.1016/j.ijpharm.2023.123071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Revised: 05/05/2023] [Accepted: 05/22/2023] [Indexed: 05/29/2023]
Abstract
A growing body of experimental and clinical evidence suggests that rare cell populations, known as cancer stem cells (CSCs), play an important role in the development and therapeutic resistance of several cancers, including glioblastoma. Elimination of these cells is therefore of paramount importance. Interestingly, recent results have shown that the use of drugs that specifically disrupt mitochondria or induce mitochondria-dependent apoptosis can efficiently kill cancer stem cells. In this context, a novel series of platinum(II) complexes bearing N-heterocyclic carbene (NHC) of the type [(NHC)PtI2(L)] modified with the mitochondria targeting group triphenylphosphonium were synthesized. After a complete characterization of the platinum complexes, the cytotoxicity against two different cancer cell lines, including a cancer stem cell line, was investigated. The best compound reduced the cell viability of both cell lines by 50% in the mM range, with an approximately 300-fold higher anticancer activity on the CSC line compared to oxaliplatin. Finally, mechanistic studies showed that the triphenylphosphonium functionalized platinum complexes significantly altered mitochondrial function and also induced atypical cell death.
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Affiliation(s)
- Patricia Fernandez de Larrinoa
- Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS), UMR7504, Université de Strasbourg & CNRS, 23 Rue du Loess, F-67083 Strasbourg, France; 3Bio Team, LCAMB, UMR7199 Université de Strasbourg & CNRS, Faculté de Pharmacie, 74 route du Rhin, 67401 Illkirch Cedex, France
| | - Jordan Parmentier
- Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS), UMR7504, Université de Strasbourg & CNRS, 23 Rue du Loess, F-67083 Strasbourg, France
| | - Antoine Kichler
- 3Bio Team, LCAMB, UMR7199 Université de Strasbourg & CNRS, Faculté de Pharmacie, 74 route du Rhin, 67401 Illkirch Cedex, France
| | - Thierry Achard
- Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS), UMR7504, Université de Strasbourg & CNRS, 23 Rue du Loess, F-67083 Strasbourg, France
| | - Monique Dontenwill
- UMR7021 Université de Strasbourg & CNRS, Faculté de Pharmacie, 74 route de Rhin, 67401 Illkirch Cedex, France
| | - Christel Herold-Mende
- University Hospital Heidelberg, Department of Neurosurgery, Division of Neurosurgical Research, Neuenheimer Feld 400, 69120 Heidelberg, Germany
| | - Sylvie Fournel
- 3Bio Team, LCAMB, UMR7199 Université de Strasbourg & CNRS, Faculté de Pharmacie, 74 route du Rhin, 67401 Illkirch Cedex, France
| | - Benoît Frisch
- 3Bio Team, LCAMB, UMR7199 Université de Strasbourg & CNRS, Faculté de Pharmacie, 74 route du Rhin, 67401 Illkirch Cedex, France
| | - Béatrice Heurtault
- 3Bio Team, LCAMB, UMR7199 Université de Strasbourg & CNRS, Faculté de Pharmacie, 74 route du Rhin, 67401 Illkirch Cedex, France.
| | - Stéphane Bellemin-Laponnaz
- Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS), UMR7504, Université de Strasbourg & CNRS, 23 Rue du Loess, F-67083 Strasbourg, France.
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4
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Bellemin-Laponnaz S. N-Heterocyclic Carbene Platinum Complexes: A Big Step Forward for Effective Antitumor Compounds. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201900960] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Stéphane Bellemin-Laponnaz
- Institut de Physique et Chimie des Matériaux de Strasbourg; IPCMS; CNRS Université de Strasbourg; 23, rue du Loess 67034 Strasbourg France
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5
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N-Heterocyclic Carbene-Polyethyleneimine (PEI) Platinum Complexes Inducing Human Cancer Cell Death: Polymer Carrier Impact. Int J Mol Sci 2018; 19:ijms19113472. [PMID: 30400637 PMCID: PMC6274957 DOI: 10.3390/ijms19113472] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2018] [Revised: 10/30/2018] [Accepted: 11/02/2018] [Indexed: 11/25/2022] Open
Abstract
The high interest in N-Heterocyclic platinum carbene complexes in cancer research stems from their high cytotoxicity to human cancer cells, their stability, as well as their ease of functionalization. However, the development of these new molecules as anticancer agents still faces multiple challenges, in particular solubility in aqueous media. Here, we synthesized platinum-NHC bioconjugates that combine water-solubility and cytotoxicity by using polyethyleneimine as polymer carrier. We showed on 8 different types of cells that the activity of these conjugates is modulated by the size of the polymer and the overall density of metal ions onto polymer chains. Using HCT116 cells, the conjugates displayed an effective activity after only 45 min of exposure in vitro correlated with a quick uptake by the cells as shown by the use of various fluorescent-tagged derivatives.
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Synthesis, Structural Characterization and Anti-Proliferative Activity of (κ1
-C
)- and (κ2
-C
,S
)-PtII
Complexes Bearing Thioether-Functionalized N-Heterocyclic Carbenes. Eur J Inorg Chem 2018. [DOI: 10.1002/ejic.201701183] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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Abstract
It is well-recognized that N-heterocyclic carbene (NHC) ligands have provided a new dimension to the design of homogeneous catalysts. Part of the success of this type of ligands resides in the limitless access to a variety of topologies with tuned electronic properties, but also in the ability of a family of NHCs that are able to adapt their properties to the specific requirements of individual catalytic transformations. The term "smart" is used here to refer to switchable, multifunctional, adaptable, or tunable ligands and, in general, to all those ligands that are able to modify their steric or electronic properties to fulfill the requirements of a defined catalytic reaction. The purpose of this review is to comprehensively describe all types of smart NHC ligands by focusing attention on the catalytically relevant ligand-based reactivity.
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Affiliation(s)
- Eduardo Peris
- Institute of Advanced Materials , Universitat Jaume I , Avenida Vicente Sos Baynat s/n , Castellón E-12071 , Spain
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8
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Liu W, Gust R. Update on metal N-heterocyclic carbene complexes as potential anti-tumor metallodrugs. Coord Chem Rev 2016. [DOI: 10.1016/j.ccr.2016.09.004] [Citation(s) in RCA: 179] [Impact Index Per Article: 22.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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9
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Bouché M, Dahm G, Maisse-François A, Achard T, Bellemin-Laponnaz S. Selective Formation of cis-N-Heterocyclic Carbene-PtII-Pnictogen Complexes and in vitro Evaluation of Their Cytotoxic Activities toward Cancer Cells. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201600296] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Mathilde Bouché
- Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS); DMO; Université de Strasbourg-CNRS UMR 7504; 23 rue du Loess, BP 43 67034 Strasbourg France
| | - Georges Dahm
- Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS); DMO; Université de Strasbourg-CNRS UMR 7504; 23 rue du Loess, BP 43 67034 Strasbourg France
| | - Aline Maisse-François
- Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS); DMO; Université de Strasbourg-CNRS UMR 7504; 23 rue du Loess, BP 43 67034 Strasbourg France
| | - Thierry Achard
- Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS); DMO; Université de Strasbourg-CNRS UMR 7504; 23 rue du Loess, BP 43 67034 Strasbourg France
| | - Stéphane Bellemin-Laponnaz
- Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS); DMO; Université de Strasbourg-CNRS UMR 7504; 23 rue du Loess, BP 43 67034 Strasbourg France
- DMO; University of Strasbourg Institute for Advanced Study (USIAS); 5 allée du Général Rouvillois 67083 Strasbourg France
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10
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Borré E, Dahm G, Guichard G, Bellemin-Laponnaz S. Post-functionalization of platinum–NHC complexes by oxime ligation for ligand targeted therapy. NEW J CHEM 2016. [DOI: 10.1039/c5nj03104d] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Carbonyl condensation reactions have been used for accessing N-heterocyclic carbene (NHC) platinum bioconjugate complexes.
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Affiliation(s)
- Etienne Borré
- Institut de Physique et Chimie des Matériaux de Strasbourg
- Université de Strasbourg-CNRS UMR7504
- 67034 Strasbourg Cedex 2
- France
| | - Georges Dahm
- Institut de Physique et Chimie des Matériaux de Strasbourg
- Université de Strasbourg-CNRS UMR7504
- 67034 Strasbourg Cedex 2
- France
| | - Gilles Guichard
- Université de Bordeaux
- CBMN
- UMR 5248
- Institut Européen de Chimie et Biologie
- 33607 Pessac
| | - Stéphane Bellemin-Laponnaz
- Institut de Physique et Chimie des Matériaux de Strasbourg
- Université de Strasbourg-CNRS UMR7504
- 67034 Strasbourg Cedex 2
- France
- University of Strasbourg Institute for Advanced Study (USIAS)
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