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Haque M, Forte N, Baker JR. Site-selective lysine conjugation methods and applications towards antibody-drug conjugates. Chem Commun (Camb) 2021; 57:10689-10702. [PMID: 34570125 PMCID: PMC8516052 DOI: 10.1039/d1cc03976h] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Site-selective protein modification is of significant interest in chemical biology research, with lysine residues representing a particularly challenging target. Whilst lysines are popular for bioconjugation, due to their nucleophilicity, solvent accessibility and the stability of the resultant conjugates, their high abundance means site-selectivity is very difficult to achieve. Antibody-drug conjugates (ADCs) present a powerful therapeutic application of protein modification, and have often relied extensively upon lysine bioconjugation for their synthesis. Here we discuss advances in methodologies for achieving site-selective lysine modification, particularly within the context of antibody conjugate construction, including the cysteine-to-lysine transfer (CLT) protocol which we have recently reported.
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Affiliation(s)
- Muhammed Haque
- Department of Chemistry, University College London, 20 Gordon Street, London, WC1H 0AJ, UK.
| | - Nafsika Forte
- Department of Chemistry, University College London, 20 Gordon Street, London, WC1H 0AJ, UK.
| | - James R Baker
- Department of Chemistry, University College London, 20 Gordon Street, London, WC1H 0AJ, UK.
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2
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Forte N, Benni I, Karu K, Chudasama V, Baker JR. Cysteine-to-lysine transfer antibody fragment conjugation. Chem Sci 2019; 10:10919-10924. [PMID: 32190247 PMCID: PMC7066670 DOI: 10.1039/c9sc03825f] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2019] [Accepted: 10/11/2019] [Indexed: 12/11/2022] Open
Abstract
Site-selective antibody fragment conjugation is achieved by using a disulfide bond to ‘hook’ and deliver thioester acylating agents to specific lysines.
The modification of lysine residues with acylating agents has represented a ubiquitous approach to the construction of antibody conjugates, with the resulting amide bonds being robustly stable and clinically validated. However, the conjugates are highly heterogeneous, due to the presence of numerous lysines on the surface of the protein, and greater control of the sites of conjugation are keenly sought. Here we present a novel approach to achieve the targeted modification of lysines distal to an antibody fragment's binding site, using a disulfide bond as a temporary ‘hook’ to deliver the acylating agent. This cysteine-to-lysine transfer (CLT) methodology offers greatly improved homogeneity of lysine conjugates, whilst retaining the advantages offered by the formation of amide linkages.
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Affiliation(s)
- Nafsika Forte
- Department of Chemistry , University College London , 20 Gordon Street , London , WC1H 0AJ , UK . ;
| | - Irene Benni
- Department of Chemistry , University College London , 20 Gordon Street , London , WC1H 0AJ , UK . ;
| | - Kersti Karu
- Department of Chemistry , University College London , 20 Gordon Street , London , WC1H 0AJ , UK . ;
| | - Vijay Chudasama
- Department of Chemistry , University College London , 20 Gordon Street , London , WC1H 0AJ , UK . ; .,Research Institute for Medicines (iMed.ULisboa) , Faculty of Pharmacy , Universidade de Lisboa , Lisbon , Portugal
| | - James R Baker
- Department of Chemistry , University College London , 20 Gordon Street , London , WC1H 0AJ , UK . ;
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3
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Toma M, Božičević L, Lapić J, Djaković S, Šakić D, Tandarić T, Vianello R, Vrček V. Transacylation in Ferrocenoyl-Purines. NMR and Computational Study of the Isomerization Mechanism. J Org Chem 2019; 84:12471-12480. [PMID: 31479271 DOI: 10.1021/acs.joc.9b01944] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
In the reaction of purines with ferrocenoyl chloride in dimethylformamide (DMF), a regioselective acylation occurred. The two products have been isolated and, according to detailed NMR analysis, identified as N7- and N9-ferrocenoylated isomers. In a more polar solvent, for example, in dimethylsulfoxide (DMSO), the two isomers interconvert to each other. The N7/N9 isomerization was followed by 1H NMR spectroscopy, until dynamic equilibrium was reached. Both kinetics and thermodynamics of the transacylation process are governed by a C6-substituent on the purine ring (R = NH2, Me, NHBz, OBz). The observed rate constant for the N7/N9-isomerization in the adenine system (R = NH2) is kobs = 0.3668 h-1, whereas the corresponding process in the C6-benzyloxypurine is 56 times slower. By use of density functional theory calculations and molecular dynamics simulations, several reaction pathways were considered and explored. Only the reaction mechanism involving DMSO as a nucleophilic reactant is in harmony with the experimental kinetic data. The calculated barrier (ΔG⧧ = 107.9 kJ/mol; at the M06L/6-311+G(d,p)/SDD level of theory) for this SN2-like reaction in the adenine system agrees well with the experimental value of 102.7 kJ/mol. No isomerization was detected in other organic solvents, for example, acetonitrile, N,N-dimethylformamide, or acetone, which indicated the exceptional nucleophilicity of DMSO. Our results raise a warning when treating or dissolving acylated purines in DMSO as they are prone to isomerization. We observed that the N7/N9-group transfer was specific not only for the organometallic moiety only, but for other acyl groups in purines as well. The relevance of this isomerization may be expected for a series of nucleobases and heterocyclic systems in general.
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Affiliation(s)
- Mateja Toma
- Faculty of Pharmacy and Biochemistry , University of Zagreb , Ante Kovačića 1 , 10000 Zagreb , Croatia
| | - Lucija Božičević
- Faculty of Pharmacy and Biochemistry , University of Zagreb , Ante Kovačića 1 , 10000 Zagreb , Croatia
| | - Jasmina Lapić
- Faculty of Food Technology and Biotechnology , University of Zagreb , Pierottijeva 6 , 10000 Zagreb , Croatia
| | - Senka Djaković
- Faculty of Food Technology and Biotechnology , University of Zagreb , Pierottijeva 6 , 10000 Zagreb , Croatia
| | - Davor Šakić
- Faculty of Pharmacy and Biochemistry , University of Zagreb , Ante Kovačića 1 , 10000 Zagreb , Croatia
| | - Tana Tandarić
- Computational Organic Chemistry and Biochemistry Group, Division of Organic Chemistry and Biochemistry , Rud̵er Bošković Institute , Bijenička cesta 54 , 10000 Zagreb , Croatia
| | - Robert Vianello
- Computational Organic Chemistry and Biochemistry Group, Division of Organic Chemistry and Biochemistry , Rud̵er Bošković Institute , Bijenička cesta 54 , 10000 Zagreb , Croatia
| | - Valerije Vrček
- Faculty of Pharmacy and Biochemistry , University of Zagreb , Ante Kovačića 1 , 10000 Zagreb , Croatia
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4
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Agouridas V, El Mahdi O, Diemer V, Cargoët M, Monbaliu JCM, Melnyk O. Native Chemical Ligation and Extended Methods: Mechanisms, Catalysis, Scope, and Limitations. Chem Rev 2019; 119:7328-7443. [DOI: 10.1021/acs.chemrev.8b00712] [Citation(s) in RCA: 243] [Impact Index Per Article: 48.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Vangelis Agouridas
- UMR CNRS 8204, Centre d’Immunité et d’Infection de Lille, University of Lille, CNRS, Institut Pasteur de Lille, F-59000 Lille, France
| | - Ouafâa El Mahdi
- Faculté Polydisciplinaire de Taza, University Sidi Mohamed Ben Abdellah, BP 1223 Taza Gare, Morocco
| | - Vincent Diemer
- UMR CNRS 8204, Centre d’Immunité et d’Infection de Lille, University of Lille, CNRS, Institut Pasteur de Lille, F-59000 Lille, France
| | - Marine Cargoët
- UMR CNRS 8204, Centre d’Immunité et d’Infection de Lille, University of Lille, CNRS, Institut Pasteur de Lille, F-59000 Lille, France
| | - Jean-Christophe M. Monbaliu
- Center for Integrated Technology and Organic Synthesis, Department of Chemistry, University of Liège, Building B6a, Room 3/16a, Sart-Tilman, B-4000 Liège, Belgium
| | - Oleg Melnyk
- UMR CNRS 8204, Centre d’Immunité et d’Infection de Lille, University of Lille, CNRS, Institut Pasteur de Lille, F-59000 Lille, France
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5
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Burke HM, McSweeney L, Scanlan EM. Exploring chemoselective S-to-N acyl transfer reactions in synthesis and chemical biology. Nat Commun 2017; 8:15655. [PMID: 28537277 PMCID: PMC5458133 DOI: 10.1038/ncomms15655] [Citation(s) in RCA: 72] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2016] [Accepted: 04/13/2017] [Indexed: 12/16/2022] Open
Abstract
S -to-N acyl transfer is a high-yielding chemoselective process for amide bond formation. It is widely utilized by chemists for synthetic applications, including peptide and protein synthesis, chemical modification of proteins, protein-protein ligation and the development of probes and molecular machines. Recent advances in our understanding of S -to-N acyl transfer processes in biology and innovations in methodology for thioester formation and desulfurization, together with an extension of the size of cyclic transition states, have expanded the boundaries of this process well beyond peptide ligation. As the field develops, this chemistry will play a central role in our molecular understanding of Biology. The conversion of thioesters to amides via acyl transfer has become one of the most important synthetic techniques for the chemical synthesis and modification of proteins. This review discusses this S-to-N acyl transfer process, and highlights some of the key applications across chemistry and biology.
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Affiliation(s)
- Helen M. Burke
- School of Chemistry, Trinity College Dublin, Dublin D2, Ireland
| | | | - Eoin M. Scanlan
- School of Chemistry, Trinity College Dublin, Dublin D2, Ireland
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6
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Petrov AA, Pakal’nis VV, Zerov AV, Yakimovich SI. N → N acyl group migration in N-acylpyrazoles: Isomerization of 1,4-diacyl-5-methyl-1H-pyrazoles to 1,4-diacyl-3-methyl-1H-pyrazoles. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2017. [DOI: 10.1134/s1070428017030125] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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8
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Koniev O, Wagner A. Developments and recent advancements in the field of endogenous amino acid selective bond forming reactions for bioconjugation. Chem Soc Rev 2015; 44:5495-551. [PMID: 26000775 DOI: 10.1039/c5cs00048c] [Citation(s) in RCA: 388] [Impact Index Per Article: 43.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Bioconjugation methodologies have proven to play a central enabling role in the recent development of biotherapeutics and chemical biology approaches. Recent endeavours in these fields shed light on unprecedented chemical challenges to attain bioselectivity, biocompatibility, and biostability required by modern applications. In this review the current developments in various techniques of selective bond forming reactions of proteins and peptides were highlighted. The utility of each endogenous amino acid-selective conjugation methodology in the fields of biology and protein science has been surveyed with emphasis on the most relevant among reported transformations; selectivity and practical use have been discussed.
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Affiliation(s)
- Oleksandr Koniev
- Laboratory of Functional Chemo-Systems (UMR 7199), Labex Medalis, University of Strasbourg, 74 Route du Rhin, 67401 Illkirch-Graffenstaden, France.
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9
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Panda SS, Jones RA, Hall CD, Katritzky AR. Applications of Chemical Ligation in Peptide Synthesis via Acyl Transfer. Top Curr Chem (Cham) 2015; 362:229-65. [PMID: 25805142 DOI: 10.1007/128_2014_608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
Abstract
The utility of native chemical ligation (NCL) in the solution or solid phase synthesis of peptides, cyclic peptides, glycopeptides, and neoglycoconjugates is reviewed. In addition, the mechanistic details of inter- or intra-molecular NCLs are discussed from experimental and computational points of view.
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Affiliation(s)
- Siva S Panda
- Department of Chemistry, Center for Heterocyclic Compounds, University of Florida, Gainesville, FL, 32611-7200, USA,
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10
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Panmand DS, Tiwari AD, Panda SS, Monbaliu JCM, Beagle LK, Asiri AM, Stevens CV, Steel PJ, Hall CD, Katritzky AR. New benzotriazole-based reagents for the phosphonylation of various N-, O-, and S-nucleophiles. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.07.057] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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11
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Ugarriza I, Uria U, Carrillo L, Vicario JL, Reyes E. Base-Promoted C→N Acyl Rearrangement: An Unconventional Approach to α-Amino Acid Derivatives. Chemistry 2014; 20:11650-4. [DOI: 10.1002/chem.201402514] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2014] [Indexed: 11/11/2022]
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12
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Biswas S, Kayaleh R, Pillai GG, Seon C, Roberts I, Popov V, Alamry KA, Katritzky AR. Long-Range Chemical Ligation from N→N Acyl Migrations in Tryptophan Peptides via Cyclic Transition States of 10- to 18-Members. Chemistry 2014; 20:8189-98. [DOI: 10.1002/chem.201400125] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2014] [Indexed: 11/07/2022]
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13
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Panda SS, Hall CD, Oliferenko AA, Katritzky AR. Traceless chemical ligation from S-, O-, and N-acyl isopeptides. Acc Chem Res 2014; 47:1076-87. [PMID: 24617996 DOI: 10.1021/ar400242q] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Peptides are ubiquitous in nature where they play crucial roles as catalysts (enzymes), cell membrane ion transporters, and structural elements (proteins) within biological systems. In addition, both linear and cyclic peptides have found use as pharmaceuticals and components of various conjugate molecular systems. Small wonder then that chemists throughout the ages have sought to mimic nature by synthesis of the amide polymers known as peptides and proteins. The fundamental reaction in the formation of a peptide bond is condensation of an amine of one amino acid with the activated carbonyl group of another. This "fragment condensation" has been achieved in many ways both in solution and by solid-phase peptide synthesis (SPSS) on resin. The most successful method for in-solution coupling is known as native chemical ligation (NCL), and the technique dates back to the pioneering work of Wieland (1953) and subsequently Kent (1994) among many others. This Account builds on the established principles of NCL as applied specifically to S-, O-, and N-isopeptides, molecules that are generally more soluble and less prone to aggregation than native peptides. This Account also covers NCL of isopeptides containing terminal and nonterminal S-acylated cysteine units, reactions that enable the synthesis of native peptides from S-acyl peptides without the use of auxiliaries. With C-terminal S-acyl isopeptides, NCL was carried out under microwave irradiation in phosphate buffer (pH 7.3) at 50 °C. Intramolecular acyl migration was observed through 5-19-membered transition states with relative rates, as assessed by product analysis, in the order, 5 > 10 > 11 > 14, 16, or 17 > 12 > 13, 15, or 19 > 18 ≫ 9 > 8. The rate/pH profile for the 15-membered TS showed a maximum for ligated product versus transacylation at pH 7.0-7.3 presumably associated with the pKa of the N-nucleophile in the hydrogen-bonded TS. Cysteine occurs at low abundance (1.7%) in natural peptides and is rarely available in a terminal position thus limiting the utility of the method. This Account reports, however, NCL at nonterminal acyl cysteine through 5-, 8-, 11-, and 14-membered TSs with relative rates of ligation in the order, 5 ≫ 14 > 11 ≫ 8, thus paralleling the results with acylated terminal cysteine residues. In an obvious sequel to the work with acylated cysteine, we discuss intramolecular O- to N-acyl shift in O-acyl serine and O-acyl tyrosine isopeptides where the story becomes more complex in terms of viable conditions and optimum size of the cyclic TS. N- to N-acyl migration in acyl tryptophan isopeptides is described, and finally, chemical ligation is applied to the synthesis of cyclic peptides. Conformational analysis and quantum chemical calculations are used to rationalize ligation through a range of cyclic transition states. This Account highlights the fact that NCL of acyl isopeptides is an extremely useful strategy for the synthesis of a wide variety of native peptides in good yields and under mild conditions. Mechanistic aspects of the ligations are not fully resolved, but theoretical studies indicate that hydrogen bonding within the various cyclic transition states plays a major role.
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Affiliation(s)
- Siva S. Panda
- Center
for Heterocyclic Compounds, Department of Chemistry, University of Florida, Gainesville, Florida 32611-7200, United States
| | - C. Dennis Hall
- Center
for Heterocyclic Compounds, Department of Chemistry, University of Florida, Gainesville, Florida 32611-7200, United States
| | - Alexander A. Oliferenko
- Center
for Heterocyclic Compounds, Department of Chemistry, University of Florida, Gainesville, Florida 32611-7200, United States
| | - Alan R. Katritzky
- Center
for Heterocyclic Compounds, Department of Chemistry, University of Florida, Gainesville, Florida 32611-7200, United States
- Chemistry Department, King Abdulaziz University, Jeddah, 21589 Saudi Arabia
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14
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Ha K, Lebedyeva I, Hamedzadeh S, Li Z, Quiñones R, Pillai GG, Williams B, Nasajpour A, Martin K, Asiri AM, Katritzky AR. Tandem Deprotection-Dimerization-Macrocyclization Route toC2Symmetriccyclo-Tetrapeptides. Chemistry 2014; 20:4874-9. [DOI: 10.1002/chem.201304262] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2013] [Revised: 12/24/2013] [Indexed: 11/08/2022]
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15
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Ha K, Lebedyeva I, Li Z, Martin K, Williams B, Faby E, Nasajpour A, Pillai GG, Al-Youbi AO, Katritzky AR. Conformationally Assisted Lactamizations for the Synthesis of Symmetrical and Unsymmetrical Bis-2,5-diketopiperazines. J Org Chem 2013; 78:8510-23. [DOI: 10.1021/jo401235k] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Khanh Ha
- Center for Heterocyclic
Compounds,
Department of Chemistry, University of Florida, Gainesville, Florida 32611-7200, United States
| | - Iryna Lebedyeva
- Center for Heterocyclic
Compounds,
Department of Chemistry, University of Florida, Gainesville, Florida 32611-7200, United States
| | - Zhiliang Li
- Center for Heterocyclic
Compounds,
Department of Chemistry, University of Florida, Gainesville, Florida 32611-7200, United States
| | - Kristin Martin
- Center for Heterocyclic
Compounds,
Department of Chemistry, University of Florida, Gainesville, Florida 32611-7200, United States
| | - Byron Williams
- Center for Heterocyclic
Compounds,
Department of Chemistry, University of Florida, Gainesville, Florida 32611-7200, United States
| | - Eric Faby
- Center for Heterocyclic
Compounds,
Department of Chemistry, University of Florida, Gainesville, Florida 32611-7200, United States
| | - Amir Nasajpour
- Center for Heterocyclic
Compounds,
Department of Chemistry, University of Florida, Gainesville, Florida 32611-7200, United States
| | - Girinath G. Pillai
- Center for Heterocyclic
Compounds,
Department of Chemistry, University of Florida, Gainesville, Florida 32611-7200, United States
- Institute of Chemistry, University of Tartu, Tartu 50411, Estonia
| | - Abdulrahman O. Al-Youbi
- Chemistry Department, Faculty
of Science, King Abdulaziz University,
Jeddah, 21589 Saudi Arabia
| | - Alan R. Katritzky
- Center for Heterocyclic
Compounds,
Department of Chemistry, University of Florida, Gainesville, Florida 32611-7200, United States
- Chemistry Department, Faculty
of Science, King Abdulaziz University,
Jeddah, 21589 Saudi Arabia
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16
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Popov V, Panda SS, Katritzky AR. Ligations from Tyrosine Isopeptides via 12- to 19-Membered Cyclic Transition States. J Org Chem 2013; 78:7455-61. [DOI: 10.1021/jo4009468] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Vadim Popov
- Center for Heterocyclic
Compounds, University of Florida, Department
of Chemistry, Gainesville,
Florida 32611-7200, United States
| | - Siva S. Panda
- Center for Heterocyclic
Compounds, University of Florida, Department
of Chemistry, Gainesville,
Florida 32611-7200, United States
| | - Alan R. Katritzky
- Center for Heterocyclic
Compounds, University of Florida, Department
of Chemistry, Gainesville,
Florida 32611-7200, United States
- Department of Chemistry, King Abdulaziz University, Jeddah 21589, Saudi Arabia
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17
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Váňa J, Sedlák M, Kammel R, Roithová J, Škríba A, Jašík J, Hanusek J. Inverse neighboring group participation: explanation of an unusual S→N alkyl migration of isothiuronium salts containing a lactone group. J Org Chem 2013; 78:4456-62. [PMID: 23560796 DOI: 10.1021/jo400460x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
A detailed experimental and DFT study of the S to N alkyl migration of substituted S-(1(3H)-isobenzofuranon-3-yl)isothiuronium bromide to N,N'-dimethyl-N-(3-oxo-1,3-dihydro-2-benzofuran-1-yl)thiourea provided evidence for the existence of an unusual double displacement mechanism involving two consecutive back-side S(N)2 reactions where a carboxylate anion has a crucial role both as a leaving group as well as an internal nucleophile. The thiazetidine zwitterionic species that is involved in this mechanism as an intermediate was characterized by infrared multiphoton dissociation spectroscopy and was trapped with methyl iodide. It was found that the intermediate has a structure of a free ion pair. The double-displacement mechanism can be considered as a new type of inverse lactone neighboring group participation.
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Affiliation(s)
- Jiří Váňa
- Faculty of Chemical Technology, Institute of Organic Chemistry and Technology, University of Pardubice, Studentská 573, CZ-532 10 Pardubice, The Czech Republic
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18
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Monbaliu JCM, Dive G, Stevens CV, Katritzky AR. Governing Parameters of Long-Range Intramolecular S-to-N Acyl Transfers within (S)-Acyl Isopeptides. J Chem Theory Comput 2013; 9:927-34. [DOI: 10.1021/ct300830k] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Jean-Christophe M. Monbaliu
- Center for Heterocyclic Compounds,
Department of Chemistry, University of Florida, Gainesville, Florida 32611-7200, United States
- Department of Sustainable Organic
Chemistry and Technology, Faculty of Bioscience Engineering, Ghent University, B-9000 Ghent, Belgium
| | - Georges Dive
- Center of Protein Engineering,
Institut de Chimie, University of Liège, Bâtiment B.6, B-4000 Sart Tilman, Liège, Belgium
| | - Christian V. Stevens
- Department of Sustainable Organic
Chemistry and Technology, Faculty of Bioscience Engineering, Ghent University, B-9000 Ghent, Belgium
| | - Alan R. Katritzky
- Center for Heterocyclic Compounds,
Department of Chemistry, University of Florida, Gainesville, Florida 32611-7200, United States
- Chemistry Department, King Abdulaziz University, Jeddah, 21589 Saudi Arabia
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19
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Popov V, Panda SS, Katritzky AR. Ligations of N-acyl tryptophan units to give native peptides via 7-, 10-, 11- and 12-membered cyclic transition states. Org Biomol Chem 2013; 11:1594-7. [DOI: 10.1039/c3ob27421g] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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20
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Panda SS, El-Nachef C, Bajaj K, Al-Youbi AO, Oliferenko A, Katritzky AR. Study of Chemical LigationVia17-, 18- and 19-Membered Cyclic Transition States. Chem Biol Drug Des 2012; 80:821-7. [DOI: 10.1111/cbdd.12053] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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21
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Bol'shakov O, Kovacs J, Chahar M, Ha K, Khelashvili L, Katritzky AR. S- toN-Acyl transfer inS-acylcysteine isopeptides via 9-, 10-, 12-, and 13-membered cyclic transition states. J Pept Sci 2012; 18:704-9. [DOI: 10.1002/psc.2438] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2012] [Revised: 07/05/2012] [Accepted: 07/06/2012] [Indexed: 11/06/2022]
Affiliation(s)
- Oleg Bol'shakov
- Center for Heterocyclic Compounds, Department of Chemistry; University of Florida; Gainesville; FL; 32611-7200; USA
| | - Judit Kovacs
- Center for Heterocyclic Compounds, Department of Chemistry; University of Florida; Gainesville; FL; 32611-7200; USA
| | - Mamta Chahar
- Center for Heterocyclic Compounds, Department of Chemistry; University of Florida; Gainesville; FL; 32611-7200; USA
| | - Khanh Ha
- Center for Heterocyclic Compounds, Department of Chemistry; University of Florida; Gainesville; FL; 32611-7200; USA
| | - Levan Khelashvili
- Center for Heterocyclic Compounds, Department of Chemistry; University of Florida; Gainesville; FL; 32611-7200; USA
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22
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Monbaliu JCM, Katritzky AR. Recent trends in Cys- and Ser/Thr-based synthetic strategies for the elaboration of peptide constructs. Chem Commun (Camb) 2012; 48:11601-22. [DOI: 10.1039/c2cc34434c] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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