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Ren JX, Zhou M, Feng XT, Zhao HY, Fu XP, Zhang X. Site-selective S-gem-difluoroallylation of unprotected peptides with 3,3-difluoroallyl sulfonium salts. Chem Sci 2024; 15:10002-10009. [PMID: 38966370 PMCID: PMC11220611 DOI: 10.1039/d4sc02681k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2024] [Accepted: 05/20/2024] [Indexed: 07/06/2024] Open
Abstract
Bench-stable 3,3-difluoroallyl sulfonium salts (DFASs), featuring tunable activity and their editable C-β and gem-difluoroallyl group, proved to be versatile fluoroalkylating reagents for site-selective S-gem-difluoroallylation of cysteine residues in unprotected peptides. The reaction proceeds with high efficiency under mild conditions (ambient temperature and aqueous and weak basic conditions). Various protected/unprotected peptides, especially bioactive peptides, are site-selectively S-gem-difluoroallylated. The newly added gem-difluoroallyl group and other functional groups derived from C-β of DFASs are poised for ligation with bio-functional groups through click and radical chemistry. This stepwise "doubly orthogonal" modification of peptides enables the construction of bioconjugates with enhanced complexity and functionality. This proof of principle is successfully applied to construct a peptide-saccharide-biotin chimeric bioconjugate, indicating its great potential application in medicinal chemistry and chemical biology.
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Affiliation(s)
- Jin-Xiu Ren
- Key Laboratory of Fluorine and Nitrogen Chemistry and Advanced Materials, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences 345 Lingling Road Shanghai 200032 China
| | - Minqi Zhou
- Key Laboratory of Fluorine and Nitrogen Chemistry and Advanced Materials, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences 345 Lingling Road Shanghai 200032 China
| | - Xiao-Tian Feng
- Key Laboratory of Fluorine and Nitrogen Chemistry and Advanced Materials, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences 345 Lingling Road Shanghai 200032 China
| | - Hai-Yang Zhao
- Key Laboratory of Fluorine and Nitrogen Chemistry and Advanced Materials, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences 345 Lingling Road Shanghai 200032 China
| | - Xia-Ping Fu
- Key Laboratory of Fluorine and Nitrogen Chemistry and Advanced Materials, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences 345 Lingling Road Shanghai 200032 China
| | - Xingang Zhang
- Key Laboratory of Fluorine and Nitrogen Chemistry and Advanced Materials, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences 345 Lingling Road Shanghai 200032 China
- School of Chemistry and Material Sciences Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences Hangzhou 310024 China
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Zhou M, Ren JX, Feng XT, Zhao HY, Fu XP, Min QQ, Zhang X. Late-stage gem-difluoroallylation of phenol in bioactive molecules and peptides with 3,3-difluoroallyl sulfonium salts. Chem Sci 2024; 15:2937-2945. [PMID: 38404383 PMCID: PMC10882445 DOI: 10.1039/d3sc06302j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2023] [Accepted: 01/13/2024] [Indexed: 02/27/2024] Open
Abstract
An efficient method for the late-stage selective O-fluoroalkylation of tyrosine residues with a stable yet highly reactive fluoroalkylating reagent, 3,3-difluoroallyl sulfonium salts (DFASs), has been developed. The reaction proceeds in a mild basic aqueous buffer (pH = 11.6) with high efficiency, high biocompatibility, and excellent regio- and chemoselectivity. Various oligopeptides and phenol-containing bioactive molecules, including carbohydrates and nucleosides, could be selectively O-fluoroalkylated. The added vinyl and other functional groups from DFASs can be valuable linkers for successive modification, significantly expanding the chemical space for further bioconjugation. The synthetic utility of this protocol has been demonstrated by the fluorescently labeled anti-cancer drug and the synthesis of O-link type 1,4,7,10-tetraazacyclododecane-N,N',N,N'-tetraacetic acid-tyrosine3-octreotate (DOTA-TATE), showing the prospect of the method in medicinal chemistry and chemical biology.
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Affiliation(s)
- Minqi Zhou
- College of Chemistry and Henan Institute of Advanced Technology, Zhengzhou University Zhengzhou 450001 China
| | - Jin-Xiu Ren
- Key Laboratory of Fluorine and Nitrogen Chemistry and Advanced Materials (Chinese Academy of Sciences), Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences 345 Lingling Road Shanghai 200032 China
| | - Xiao-Tian Feng
- College of Chemistry and Henan Institute of Advanced Technology, Zhengzhou University Zhengzhou 450001 China
| | - Hai-Yang Zhao
- Key Laboratory of Fluorine and Nitrogen Chemistry and Advanced Materials (Chinese Academy of Sciences), Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences 345 Lingling Road Shanghai 200032 China
| | - Xia-Ping Fu
- Key Laboratory of Fluorine and Nitrogen Chemistry and Advanced Materials (Chinese Academy of Sciences), Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences 345 Lingling Road Shanghai 200032 China
| | - Qiao-Qiao Min
- Key Laboratory of Fluorine and Nitrogen Chemistry and Advanced Materials (Chinese Academy of Sciences), Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences 345 Lingling Road Shanghai 200032 China
| | - Xingang Zhang
- College of Chemistry and Henan Institute of Advanced Technology, Zhengzhou University Zhengzhou 450001 China
- Key Laboratory of Fluorine and Nitrogen Chemistry and Advanced Materials (Chinese Academy of Sciences), Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences 345 Lingling Road Shanghai 200032 China
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Fabrication of 3D-printed octreotide acetate-loaded oral solid dosage forms by means of semi-solid extrusion printing. Int J Pharm 2023; 632:122569. [PMID: 36592893 DOI: 10.1016/j.ijpharm.2022.122569] [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: 09/14/2022] [Revised: 12/16/2022] [Accepted: 12/27/2022] [Indexed: 01/01/2023]
Abstract
Semi-solid extrusion (SSE) 3D printing technology was utilized for the encapsulation of octreotide acetate (OCT) into 3D-printed oral dosage forms in ambient conditions. The inks and the OCT-loaded 3D-printed oral dosage forms were characterized by means of rheology, Fourier-transform infrared (FTIR) spectroscopy and Nuclear Magnetic Resonance (NMR). In vitro studies demonstrated that the formulations released OCT in a controlled manner. The application of these formulations to Caco-2 cell monolayers revealed their capability to induce the transient opening of tight junctions in a reversible manner as evidenced by Transepithelial Resistance (TEER) measurements. Cellular assays (CCK-8 assay) demonstrated the viability of intestinal cells in the presence of these formulations. The in vitro transport studies across Caco-2 monolayers demonstrated the ability of these formulations to enhance the OCT uptake across the cell monolayer over time due to opening of the tight junctions.
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Sahoo J, Panda J, Sahoo G. Unravelling the Development of Non-Covalent Organocatalysis in India. Synlett 2022. [DOI: 10.1055/s-0042-1751370] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
AbstractThis review is devoted to underpinning the contributions of Indian researchers towards asymmetric organocatalysis. More specifically, a comprehensive compilation of reactions mediated by a wide range of non-covalent catalysis is illustrated. A detailed overview of vividly catalogued asymmetric organic transformations promoted by hydrogen bonding and Brønsted acid catalysis, alongside an assortment of catalysts is provided. Although asymmetric organocatalysis has etched itself in history, we aim to showcase the scientific metamorphosis of Indian research from baby steps to large strides within this field. 1 Introduction2 Non-Covalent Catalysis and Its Various Activation Modes3 Hydrogen-Bonding Catalysis3.1 Urea- and Thiourea-Derived Organocatalysts3.1.1 Thiourea-Derived Organocatalysts3.1.2 Urea-Derived Organocatalysts3.2 Squaramide-Derived Organocatalysts3.2.1 Michael Reactions3.2.2 C-Alkylation Reactions3.2.3 Mannich Reactions3.2.4 [3+2] Cycloaddition Reactions3.3 Cinchona-Alkaloid-Derived Organocatalysts3.3.1 Michael Reactions3.3.2 Aldol Reactions3.3.3 Friedel–Crafts Reactions3.3.4 Vinylogous Alkylation of 4-Methylcoumarins3.3.5 C-Sulfenylation Reactions3.3.6 Peroxyhemiacetalisation of Isochromans3.3.7 Diels–Alder Reactions3.3.8 Cycloaddition Reactions3.3.9 Morita–Baylis–Hilman Reactions4 Brønsted Acid Derived Organocatalysts4.1 Chiral Phosphoric Acid Catalysis4.1.1 Diels–Alder Reactions4.1.2 Addition of Ketimines4.1.3 Annulation of Acyclic Enecarbamates5 Conclusion
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Guerrero I, Correa A. Site‐Selective Trifluoromethylation Reactions of Oligopeptides. ASIAN J ORG CHEM 2020. [DOI: 10.1002/ajoc.202000170] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Itziar Guerrero
- Department of Organic Chemistry IUniversity of the Basque Country (UPV/EHU) Joxe Mari Korta R&D Center, Avda. Tolosa 72 20018 Donostia-San Sebastián Spain
| | - Arkaitz Correa
- Department of Organic Chemistry IUniversity of the Basque Country (UPV/EHU) Joxe Mari Korta R&D Center, Avda. Tolosa 72 20018 Donostia-San Sebastián Spain
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Tessier R, Nandi RK, Dwyer BG, Abegg D, Sornay C, Ceballos J, Erb S, Cianférani S, Wagner A, Chaubet G, Adibekian A, Waser J. Ethynylation of Cysteine Residues: From Peptides to Proteins in Vitro and in Living Cells. Angew Chem Int Ed Engl 2020; 59:10961-10970. [DOI: 10.1002/anie.202002626] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Indexed: 12/11/2022]
Affiliation(s)
- Romain Tessier
- Laboratory of Catalysis and Organic SynthesisEcole Polytechnique Fédérale de Lausanne EPFL SB ISIC LCSO, BCH 4306 1015 Lausanne Switzerland
- Present address: Department of Chemical BiologyMax Planck Institute of Molecular Physiology Otto-Hahn-Strasse 11 44227 Dortmund Germany
| | - Raj Kumar Nandi
- Laboratory of Catalysis and Organic SynthesisEcole Polytechnique Fédérale de Lausanne EPFL SB ISIC LCSO, BCH 4306 1015 Lausanne Switzerland
- Present address: Department of ChemistryDiamond Harbour Women's University Sarisha South 24 Parganas West Bengal 743368 India
| | - Brendan G. Dwyer
- Department of ChemistryThe Scripps Research Institute 130 Scripps Way Jupiter FL 33458 USA
| | - Daniel Abegg
- Department of ChemistryThe Scripps Research Institute 130 Scripps Way Jupiter FL 33458 USA
| | - Charlotte Sornay
- Bio-Functional Chemistry (UMR 7199)LabEx Medalis, University of Strasbourg 74 Route du Rhin 67400 Illkirch-Graffenstaden France
| | - Javier Ceballos
- Laboratory of Catalysis and Organic SynthesisEcole Polytechnique Fédérale de Lausanne EPFL SB ISIC LCSO, BCH 4306 1015 Lausanne Switzerland
| | - Stéphane Erb
- Laboratoire de Spectrométrie de Masse BioOrganique (LSMBO)Université de StrasbourgCNRS, IPHC UMR 7178 67000 Strasbourg France
| | - Sarah Cianférani
- Laboratoire de Spectrométrie de Masse BioOrganique (LSMBO)Université de StrasbourgCNRS, IPHC UMR 7178 67000 Strasbourg France
| | - Alain Wagner
- Bio-Functional Chemistry (UMR 7199)LabEx Medalis, University of Strasbourg 74 Route du Rhin 67400 Illkirch-Graffenstaden France
| | - Guilhem Chaubet
- Bio-Functional Chemistry (UMR 7199)LabEx Medalis, University of Strasbourg 74 Route du Rhin 67400 Illkirch-Graffenstaden France
| | - Alexander Adibekian
- Department of ChemistryThe Scripps Research Institute 130 Scripps Way Jupiter FL 33458 USA
| | - Jerome Waser
- Laboratory of Catalysis and Organic SynthesisEcole Polytechnique Fédérale de Lausanne EPFL SB ISIC LCSO, BCH 4306 1015 Lausanne Switzerland
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Tessier R, Nandi RK, Dwyer BG, Abegg D, Sornay C, Ceballos J, Erb S, Cianférani S, Wagner A, Chaubet G, Adibekian A, Waser J. Ethynylation of Cysteine Residues: From Peptides to Proteins in Vitro and in Living Cells. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202002626] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Romain Tessier
- Laboratory of Catalysis and Organic SynthesisEcole Polytechnique Fédérale de Lausanne EPFL SB ISIC LCSO, BCH 4306 1015 Lausanne Switzerland
- Present address: Department of Chemical BiologyMax Planck Institute of Molecular Physiology Otto-Hahn-Strasse 11 44227 Dortmund Germany
| | - Raj Kumar Nandi
- Laboratory of Catalysis and Organic SynthesisEcole Polytechnique Fédérale de Lausanne EPFL SB ISIC LCSO, BCH 4306 1015 Lausanne Switzerland
- Present address: Department of ChemistryDiamond Harbour Women's University Sarisha South 24 Parganas West Bengal 743368 India
| | - Brendan G. Dwyer
- Department of ChemistryThe Scripps Research Institute 130 Scripps Way Jupiter FL 33458 USA
| | - Daniel Abegg
- Department of ChemistryThe Scripps Research Institute 130 Scripps Way Jupiter FL 33458 USA
| | - Charlotte Sornay
- Bio-Functional Chemistry (UMR 7199)LabEx Medalis, University of Strasbourg 74 Route du Rhin 67400 Illkirch-Graffenstaden France
| | - Javier Ceballos
- Laboratory of Catalysis and Organic SynthesisEcole Polytechnique Fédérale de Lausanne EPFL SB ISIC LCSO, BCH 4306 1015 Lausanne Switzerland
| | - Stéphane Erb
- Laboratoire de Spectrométrie de Masse BioOrganique (LSMBO)Université de StrasbourgCNRS, IPHC UMR 7178 67000 Strasbourg France
| | - Sarah Cianférani
- Laboratoire de Spectrométrie de Masse BioOrganique (LSMBO)Université de StrasbourgCNRS, IPHC UMR 7178 67000 Strasbourg France
| | - Alain Wagner
- Bio-Functional Chemistry (UMR 7199)LabEx Medalis, University of Strasbourg 74 Route du Rhin 67400 Illkirch-Graffenstaden France
| | - Guilhem Chaubet
- Bio-Functional Chemistry (UMR 7199)LabEx Medalis, University of Strasbourg 74 Route du Rhin 67400 Illkirch-Graffenstaden France
| | - Alexander Adibekian
- Department of ChemistryThe Scripps Research Institute 130 Scripps Way Jupiter FL 33458 USA
| | - Jerome Waser
- Laboratory of Catalysis and Organic SynthesisEcole Polytechnique Fédérale de Lausanne EPFL SB ISIC LCSO, BCH 4306 1015 Lausanne Switzerland
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9
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Sun J, Zhen X, Ge H, Zhang G, An X, Du Y. Synthesis of trifluoromethylated 2 H-azirines through Togni reagent-mediated trifluoromethylation followed by PhIO-mediated azirination. Beilstein J Org Chem 2018; 14:1452-1458. [PMID: 29977409 PMCID: PMC6009194 DOI: 10.3762/bjoc.14.123] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2018] [Accepted: 05/18/2018] [Indexed: 12/11/2022] Open
Abstract
The reaction of enamine compounds with the Togni reagent in the presence of CuI afforded β-trifluoromethylated enamine intermediates, which were converted directly to biologically interesting trifluoromethylated 2H-azirines by an iodosobenzene (PhIO)-mediated intramolecular azirination in a one-pot process.
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Affiliation(s)
- Jiyun Sun
- Tianjin Key Laboratory for Modern Drug Delivery and High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China
| | - Xiaohua Zhen
- Tianjin Key Laboratory for Modern Drug Delivery and High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China
| | - Huaibin Ge
- Tianjin Key Laboratory for Modern Drug Delivery and High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China
| | - Guangtao Zhang
- Tianjin Key Laboratory for Modern Drug Delivery and High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China
| | - Xuechan An
- Tianjin Key Laboratory for Modern Drug Delivery and High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China
| | - Yunfei Du
- Tianjin Key Laboratory for Modern Drug Delivery and High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China.,Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, China
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Václavík J, Zschoche R, Klimánková I, Matoušek V, Beier P, Hilvert D, Togni A. Irreversible Cysteine-Selective Protein Labeling Employing Modular Electrophilic Tetrafluoroethylation Reagents. Chemistry 2017; 23:6490-6494. [PMID: 28195376 DOI: 10.1002/chem.201700607] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2017] [Indexed: 11/06/2022]
Abstract
Fluoroalkylation reagents based on hypervalent iodine are widely used to transfer fluoroalkyl moieties to various nucleophiles. However, the transferred groups have so far been limited to simple structural motifs. We herein report a reagent featuring a secondary amine that can be converted to amide, sulfonamide, and tertiary amine derivatives in one step. The resulting reagents bear manifold functional groups, many of which would not be compatible with the original synthetic pathway. Exploiting this structural versatility and the known high reactivity toward thiols, the new-generation reagents were used in bioconjugation with an artificial retro-aldolase, containing an exposed cysteine and a reactive catalytic lysine. Whereas commercial reagents based on maleimide and iodoacetamide labeled both sites, the iodanes exclusively modified the cysteine residue. The study thus demonstrates that modular fluoroalkylation reagents can be used as tools for cysteine-selective bioconjugation.
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Affiliation(s)
- Jiří Václavík
- Department of Chemistry and Applied Biosciences, Swiss Federal Institute of Technology, ETH Zürich, Vladimir-Prelog-Weg 2, 8093, Zürich, Switzerland.,Institute of Organic Chemistry and Biochemistry, v.v.i., Academy of Sciences of the Czech Republic, Flemingovo nám. 2, 166 10, Prague, Czech Republic
| | - Reinhard Zschoche
- Department of Chemistry and Applied Biosciences, Swiss Federal Institute of Technology, ETH Zürich, Vladimir-Prelog-Weg 2, 8093, Zürich, Switzerland
| | - Iveta Klimánková
- Institute of Organic Chemistry and Biochemistry, v.v.i., Academy of Sciences of the Czech Republic, Flemingovo nám. 2, 166 10, Prague, Czech Republic
| | - Václav Matoušek
- CF Plus Chemicals s.r.o., Kamenice 771/34, 625 00, Brno, Czech Republic
| | - Petr Beier
- Institute of Organic Chemistry and Biochemistry, v.v.i., Academy of Sciences of the Czech Republic, Flemingovo nám. 2, 166 10, Prague, Czech Republic
| | - Donald Hilvert
- Department of Chemistry and Applied Biosciences, Swiss Federal Institute of Technology, ETH Zürich, Vladimir-Prelog-Weg 2, 8093, Zürich, Switzerland
| | - Antonio Togni
- Department of Chemistry and Applied Biosciences, Swiss Federal Institute of Technology, ETH Zürich, Vladimir-Prelog-Weg 2, 8093, Zürich, Switzerland
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11
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Gadais C, Saraiva-Rosa N, Chelain E, Pytkowicz J, Brigaud T. Tailored Approaches towards the Synthesis ofl-S-(Trifluoromethyl)cysteine- andl-Trifluoromethionine-Containing Peptides. European J Org Chem 2016. [DOI: 10.1002/ejoc.201601318] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Charlène Gadais
- Laboratoire de Chimie Biologique (LCB), EA 4505; Université de Cergy-Pontoise; 5 Mail Gay-Lussac 95000 Cergy-Pontoise France
| | - Nathalie Saraiva-Rosa
- Laboratoire de Chimie Biologique (LCB), EA 4505; Université de Cergy-Pontoise; 5 Mail Gay-Lussac 95000 Cergy-Pontoise France
| | - Evelyne Chelain
- Laboratoire de Chimie Biologique (LCB), EA 4505; Université de Cergy-Pontoise; 5 Mail Gay-Lussac 95000 Cergy-Pontoise France
| | - Julien Pytkowicz
- Laboratoire de Chimie Biologique (LCB), EA 4505; Université de Cergy-Pontoise; 5 Mail Gay-Lussac 95000 Cergy-Pontoise France
| | - Thierry Brigaud
- Laboratoire de Chimie Biologique (LCB), EA 4505; Université de Cergy-Pontoise; 5 Mail Gay-Lussac 95000 Cergy-Pontoise France
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A molecular dynamics simulation investigation of the relative stability of the cyclic peptide octreotide and its deprotonated and its (CF3)-Trp substituted analogs in different solvents. Bioorg Med Chem 2016; 24:4936-4948. [DOI: 10.1016/j.bmc.2016.08.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2016] [Revised: 07/31/2016] [Accepted: 08/01/2016] [Indexed: 11/23/2022]
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Sala O, Santschi N, Jungen S, Lüthi HP, Iannuzzi M, Hauser N, Togni A. S-Trifluoromethylation of Thiols by Hypervalent Iodine Reagents: A Joint Experimental and Computational Study. Chemistry 2016; 22:1704-13. [DOI: 10.1002/chem.201503774] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2015] [Indexed: 01/14/2023]
Affiliation(s)
- Oliver Sala
- Department of Chemistry and Applied Biosciences, Swiss Federal Institute of Technology; ETH Zürich; Vladimir-Prelog-Weg 2 CH-8093 Zürich Switzerland
| | - Nico Santschi
- Department of Chemistry and Applied Biosciences, Swiss Federal Institute of Technology; ETH Zürich; Vladimir-Prelog-Weg 2 CH-8093 Zürich Switzerland
- Organisch Chemisches Institut; Westfälische Wilhelms-Universität; Münster Corrensstrasse 40 Münster Germany
| | - Stefan Jungen
- Department of Chemistry and Applied Biosciences, Swiss Federal Institute of Technology; ETH Zürich; Vladimir-Prelog-Weg 2 CH-8093 Zürich Switzerland
| | - Hans Peter Lüthi
- Department of Chemistry and Applied Biosciences, Swiss Federal Institute of Technology; ETH Zürich; Vladimir-Prelog-Weg 2 CH-8093 Zürich Switzerland
| | - Marcella Iannuzzi
- University of Zurich; Department of Chemistry; Winterthurerstr. 190 8057 Zürich Switzerland
| | - Nicole Hauser
- Department of Chemistry and Applied Biosciences, Swiss Federal Institute of Technology; ETH Zürich; Vladimir-Prelog-Weg 2 CH-8093 Zürich Switzerland
| | - Antonio Togni
- Department of Chemistry and Applied Biosciences, Swiss Federal Institute of Technology; ETH Zürich; Vladimir-Prelog-Weg 2 CH-8093 Zürich Switzerland
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Popova EA, Nikolskaia SK, Gluzdikov IA, Trifonov RE. An efficient synthesis of a novel analog of octreotide with an unnatural l-lysine-like tetrazolyl amino acid. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.07.067] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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15
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Charpentier J, Früh N, Togni A. Electrophilic trifluoromethylation by use of hypervalent iodine reagents. Chem Rev 2014; 115:650-82. [PMID: 25152082 DOI: 10.1021/cr500223h] [Citation(s) in RCA: 1200] [Impact Index Per Article: 120.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Julie Charpentier
- Department of Chemistry and Applied Biosciences, Swiss Federal Institute of Technology , Vladimir-Prelog-Weg 2, CH-8093 Zurich, Switzerland
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16
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Sparr C, Purkayastha N, Yoshinari T, Seebach D, Maschauer S, Prante O, Hübner H, Gmeiner P, Kolesinska B, Cescato R, Waser B, Reubi JC. Syntheses, receptor bindings, in vitro and in vivo stabilities and biodistributions of DOTA-neurotensin(8-13) derivatives containing β-amino acid residues - a lesson about the importance of animal experiments. Chem Biodivers 2014; 10:2101-21. [PMID: 24327436 DOI: 10.1002/cbdv.201300331] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2013] [Indexed: 12/11/2022]
Abstract
Neurotensin(8-13) (NTS(8-13)) analogs with C- and/or N-terminal β-amino acid residues and three DOTA derivatives thereof have been synthesized (i.e., 1-6). A virtual docking experiment showed almost perfect fit of one of the 1,4,7,10-tetraazacyclododecane-1,4,7,10-tetraacetic acid (DOTA) derivatives, 6a, into a crystallographically identified receptor NTSR1 (Fig.1). The affinities for the receptors of the NTS analogs and derivatives are low, when determined with cell-membrane homogenates, while, with NTSR1-exhibiting cancer tissues, affinities in the single-digit nanomolar range can be observed (Table 2). Most of the β-amino acid-containing NTS(8-13) analogs (Table 1 and Fig.2), including the (68) Ga complexes of the DOTA-substituted ones (6; Figs.2 and 5), are stable for ca. 1 h in human serum and plasma, and in murine plasma. The biodistributions of two (68) Ga complexes (of 6a and 6b) in HT29 tumor-bearing nude mice, in the absence and in the presence of a blocking compound, after 10, 30, and 60 min (Figs. 3 and 4) lead to the conclusion that the amount of specifically bound radioligand is rather low. This was confirmed by PET-imaging experiments with the tumor-bearing mice (Fig.6). Comparison of the in vitro plasma stability (after 1 h) with the ex vivo blood content (after 10-15 min) of the two (68) Ga complexes shows that they are rapidly cleaved in the animals (Fig.5).
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Affiliation(s)
- Christof Sparr
- Laboratorium für Organische Chemie, Departement Chemie und Angewandte Biowissenschaften, ETH-Zürich, Hönggerberg HCI, Wolfgang-Pauli-Strasse 10, CH-8093 Zürich, (phone: +41-44-632-2990; fax: +41-44-632-1144)
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Hoyer D, Bartfai T. Neuropeptides and neuropeptide receptors: drug targets, and peptide and non-peptide ligands: a tribute to Prof. Dieter Seebach. Chem Biodivers 2013; 9:2367-87. [PMID: 23161624 DOI: 10.1002/cbdv.201200288] [Citation(s) in RCA: 74] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2012] [Indexed: 11/06/2022]
Abstract
The number of neuropeptides and their corresponding receptors has increased steadily over the last fourty years: initially, peptides were isolated from gut or brain (e.g., Substance P, somatostatin), then by targeted mining in specific regions (e.g., cortistatin, orexin in the brain), or by deorphanization of G-protein-coupled receptors (GPCRs; orexin, ghrelin receptors) and through the completion the Human Genome Project. Neuropeptides (and their receptors) have regionally restricted distributions in the central and peripheral nervous system. The neuropeptide signaling is somewhat more distinct spatially than signaling with classical, low-molecular-weight neurotransmitters that are more widely expressed, and, therefore, one assumes that drugs acting at neuropeptide receptors may have more selective pharmacological actions with possibly fewer side effects than drugs acting on glutamatergic, GABAergic, monoaminergic, or cholinergic systems. Neuropeptide receptors, which may have a few or multiple subtypes and splice variants, belong almost exclusively to the GPCR family also known as seven-transmembrane receptors (7TM), a favorite class of drug targets in the pharmaceutical industry. Most neuropeptides are co-stored and co-released with classic neurotransmitters, albeit often only at higher frequencies of stimulation or at bursting activity, thus restricting the neuropeptide signaling to specific circumstances, another reason to assume that neuropeptide drug mimics may have less side effects. Neuropeptides possess a wide spectrum of functions from neurohormone, neurotransmitter to growth factor, but also as key inflammatory mediators. Neuropeptides become 'active' when the nervous system is challenged, e.g., by stress, injury, drug abuse, or neuropsychiatric disorders with genetic, epigenetic, and/or environmental components. The unsuspected number of true neuropeptides and their cognate receptors provides opportunities to identify novel targets for the treatment of both central and peripheral nervous system disorders. Both, receptor subtype-selective antagonists and agonists are being developed, as illustrated by the success of somatostatin agonists, angiotensin, and endothelin antagonists, and the expected clinical applications of NK-1/2/3 (substance P) receptor antagonists, CRF, vasopressin, NPY, neurotensin, orexin antagonists, or neuropeptide receptor modulators; such ligands have efficacy in preclinical or clinical models of pain and neuropsychiatric diseases, such as migraine, chronic/neuropathic pain, anxiety, sleep disorders, depression, and schizophrenia. In addition, both positive and negative allosteric modulators have been described with interesting in vivo activities (e.g., at galanin receptors). The field has become more complex now that an increasing number of heteromeric neuropeptide receptors are described, e.g., ghrelin receptors with 5-HT(2C) or dopamine D(1), D(2) receptors. At long last, structure-based drug discovery can now be envisaged with confidence, since crystal or solution structure of GPCRs and GPCR-ligand complexes, including peptide receptors, are published almost on a monthly basis. Finally, although most compounds acting at peptide receptors are still peptidomimetics, the last decade has seen the emergence of low-molecular-weight nonpeptide ligands (e.g., for orexin, ghrelin, or neurokinin receptors), and surprising progress has been made with β- and γ-peptides as very stable and potent mimetics of, e.g., somatostatin (SRIF), where the native SRIF has a half-life limited to 2-3 min. This last point will be illustrated more specifically, as we have had a long-standing collaboration with Prof. D. Seebach to whom this review is dedicated at the occasion of his 75th birthday.
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Affiliation(s)
- Daniel Hoyer
- Department of Pharmacology, Faculty of Medicine, Dentistry and Health Sciences, The University of Melbourne, Parkville, Victoria 3010, Australia.
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Zou A, Chen Y, Huo M, Wang J, Zhang Y, Zhou J, Zhang Q. In Vivo Studies of Octreotide-Modified N-Octyl-O, N-Carboxymethyl Chitosan Micelles Loaded with Doxorubicin for Tumor-Targeted Delivery. J Pharm Sci 2013; 102:126-35. [DOI: 10.1002/jps.23341] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2012] [Revised: 08/19/2012] [Accepted: 09/25/2012] [Indexed: 01/02/2023]
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Niedermann K, Früh N, Senn R, Czarniecki B, Verel R, Togni A. Direkte elektrophile N-Trifluormethylierung von Azolen mit einem hypervalenten Iodreagens. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201201572] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Niedermann K, Früh N, Senn R, Czarniecki B, Verel R, Togni A. Direct Electrophilic N-Trifluoromethylation of Azoles by a Hypervalent Iodine Reagent. Angew Chem Int Ed Engl 2012; 51:6511-5. [DOI: 10.1002/anie.201201572] [Citation(s) in RCA: 90] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2012] [Indexed: 11/07/2022]
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Charkoudian LK, Liu CW, Capone S, Kapur S, Cane DE, Togni A, Seebach D, Khosla C. Probing the interactions of an acyl carrier protein domain from the 6-deoxyerythronolide B synthase. Protein Sci 2011; 20:1244-55. [PMID: 21563224 DOI: 10.1002/pro.652] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The assembly-line architecture of polyketide synthases (PKSs) provides an opportunity to rationally reprogram polyketide biosynthetic pathways to produce novel antibiotics. A fundamental challenge toward this goal is to identify the factors that control the unidirectional channeling of reactive biosynthetic intermediates through these enzymatic assembly lines. Within the catalytic cycle of every PKS module, the acyl carrier protein (ACP) first collaborates with the ketosynthase (KS) domain of the paired subunit in its own homodimeric module so as to elongate the growing polyketide chain and then with the KS domain of the next module to translocate the newly elongated polyketide chain. Using NMR spectroscopy, we investigated the features of a structurally characterized ACP domain of the 6-deoxyerythronolide B synthase that contribute to its association with its KS translocation partner. Not only were we able to visualize selective protein-protein interactions between the two partners, but also we detected a significant influence of the acyl chain substrate on this interaction. A novel reagent, CF₃-S-ACP, was developed as a ¹⁹F NMR spectroscopic probe of protein-protein interactions. The implications of our findings for understanding intermodular chain translocation are discussed.
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Mielgo A, Velilla I, Gómez-Bengoa E, Palomo C. Brønsted Acid Assisted Regio- and Enantioselective Direct O-Nitroso Aldol Reaction Catalysed by α,α-Diphenylprolinol Trimethylsilyl Ether. Chemistry 2010; 16:7496-502. [DOI: 10.1002/chem.201000376] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Gómez-Bengoa E, Maestro M, Mielgo A, Otazo I, Palomo C, Velilla I. A 4-Hydroxypyrrolidine-Catalyzed Mannich Reaction of Aldehydes: Control ofanti-Selectivity by Hydrogen Bonding Assisted by Brønsted Acids. Chemistry 2010; 16:5333-42. [DOI: 10.1002/chem.200903537] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Apfel UP, Rudolph M, Apfel C, Robl C, Langenegger D, Hoyer D, Jaun B, Ebert MO, Alpermann T, Seebach D, Weigand W. Reaction of Fe3(CO)12 with octreotide—chemical, electrochemical and biological investigations. Dalton Trans 2010; 39:3065-71. [DOI: 10.1039/b921299j] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Ebert MO, Gardiner J, Ballet S, Abell A, Seebach D. Synthesis and High-Resolution NMR Structure of a β3-Octapeptide with and without a Tether Introduced by Olefin Metathesis. Helv Chim Acta 2009. [DOI: 10.1002/hlca.200900311] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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