1
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Sampaio-Dias IE, Silva-Reis SC, Pires-Lima BL, Correia XC, Costa-Almeida HF. A Convenient On-Site Oxidation Strategy for the N-Hydroxylation of Melanostatin Neuropeptide Using Cope Elimination. SYNTHESIS-STUTTGART 2022. [DOI: 10.1055/a-1695-1095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
AbstractA convenient synthetic protocol for the unprecedented N-hydroxylation of proline residue in Melanostatin (MIF-1) neuropeptide is reported. This methodology is grounded on the incorporation of N-(cyanoethyl)prolyl residue followed by on-site oxidation by Cope elimination with m-chloroperbenzoic acid, exploring the unrecognized dual role of the cyanoethyl group as an effective N-protecting group under peptide synthesis conditions and as a suitable leaving group during the chemoselective on-site N-oxidation. Following this protocol N-hydroxy-MIF-1 is obtained in 78% global yield from N-(cyanoethyl)-l-proline. This synthetic approach opens a new avenue for access to N-hydroxylated Melanostatin analogues with direct application in neurochemistry and Parkinson’s research.
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2
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Hollanders C, Renders E, Gadais C, Masullo D, Van Raemdonck L, Wybon CCD, Martin C, Herrebout WA, Maes BUW, Ballet S. Zn-Catalyzed Nicotinate-Directed Transamidations in Peptide Synthesis. ACS Catal 2020. [DOI: 10.1021/acscatal.9b05074] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Charlie Hollanders
- Organic Chemistry, Departments of Chemistry and Bioengineering Sciences, Vrije Universiteit Brussel, Pleinlaan 2, B-1050 Brussels, Belgium
- Organic Synthesis, Department of Chemistry, University of Antwerp, Groenenborgerlaan 171, B-2020 Antwerp, Belgium
| | - Evelien Renders
- Organic Synthesis, Department of Chemistry, University of Antwerp, Groenenborgerlaan 171, B-2020 Antwerp, Belgium
| | - Charlène Gadais
- Organic Chemistry, Departments of Chemistry and Bioengineering Sciences, Vrije Universiteit Brussel, Pleinlaan 2, B-1050 Brussels, Belgium
- Organic Synthesis, Department of Chemistry, University of Antwerp, Groenenborgerlaan 171, B-2020 Antwerp, Belgium
| | - Dario Masullo
- Organic Synthesis, Department of Chemistry, University of Antwerp, Groenenborgerlaan 171, B-2020 Antwerp, Belgium
| | - Laurent Van Raemdonck
- Organic Synthesis, Department of Chemistry, University of Antwerp, Groenenborgerlaan 171, B-2020 Antwerp, Belgium
| | - Clarence C. D. Wybon
- Organic Synthesis, Department of Chemistry, University of Antwerp, Groenenborgerlaan 171, B-2020 Antwerp, Belgium
| | - Charlotte Martin
- Organic Chemistry, Departments of Chemistry and Bioengineering Sciences, Vrije Universiteit Brussel, Pleinlaan 2, B-1050 Brussels, Belgium
| | - Wouter A. Herrebout
- Molecular Spectroscopy, Department of Chemistry, University of Antwerp, Groenenborgerlaan 171, B-2020 Antwerp, Belgium
| | - Bert U. W. Maes
- Organic Synthesis, Department of Chemistry, University of Antwerp, Groenenborgerlaan 171, B-2020 Antwerp, Belgium
| | - Steven Ballet
- Organic Chemistry, Departments of Chemistry and Bioengineering Sciences, Vrije Universiteit Brussel, Pleinlaan 2, B-1050 Brussels, Belgium
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3
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Mampuys P, Ruijter E, Orru RVA, Maes BUW. Synthesis of Secondary Amides from Thiocarbamates. Org Lett 2018; 20:4235-4239. [DOI: 10.1021/acs.orglett.8b01654] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Pieter Mampuys
- Organic Synthesis, Department of Chemistry, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium
| | - Eelco Ruijter
- Department of Chemistry and Pharmaceutical Sciences and Amsterdam Institute for Molecules, Medicines and Systems (AIMMS), Vrije Universiteit Amsterdam, De Boelelaan 1108, 1081 HZ Amsterdam, The Netherlands
| | - Romano V. A. Orru
- Department of Chemistry and Pharmaceutical Sciences and Amsterdam Institute for Molecules, Medicines and Systems (AIMMS), Vrije Universiteit Amsterdam, De Boelelaan 1108, 1081 HZ Amsterdam, The Netherlands
| | - Bert U. W. Maes
- Organic Synthesis, Department of Chemistry, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium
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4
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Mocci R, Murgia S, De Luca L, Colacino E, Delogu F, Porcheddu A. Ball-milling and cheap reagents breathe green life into the one hundred-year-old Hofmann reaction. Org Chem Front 2018. [DOI: 10.1039/c7qo01006k] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
A very efficient mechanically activated synthesis of isocyanides directly from primary amines and without extra-solvent addition has been reported.
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Affiliation(s)
- Rita Mocci
- Università degli Studi di Cagliari
- Dipartimento di Scienze Chimiche e Geologiche
- 09042 Monserrato
- Italy
| | - Sergio Murgia
- Università degli Studi di Cagliari
- Dipartimento di Scienze Chimiche e Geologiche
- 09042 Monserrato
- Italy
| | - Lidia De Luca
- Università degli Studi di Sassari
- Dipartimento di Chimica e Farmacia
- 07100 Sassari
- Italy
| | - Evelina Colacino
- Università degli Studi di Cagliari
- Dipartimento di Scienze Chimiche e Geologiche
- 09042 Monserrato
- Italy
- Institut des Biomolécules Max Mousseron
| | - Francesco Delogu
- Università degli Studi di Cagliari
- Dipartimento di Ingegneria Meccanica
- Chimica
- e dei Materiali
- Cagliari
| | - Andrea Porcheddu
- Università degli Studi di Cagliari
- Dipartimento di Scienze Chimiche e Geologiche
- 09042 Monserrato
- Italy
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5
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N. N, Thimmalapura VM, Hosamani B, Prabhu G, Kumar LR, Sureshbabu VV. Thioacids – synthons for amide bond formation and ligation reactions: assembly of peptides and peptidomimetics. Org Biomol Chem 2018; 16:3524-3552. [DOI: 10.1039/c8ob00512e] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The synthesis of α-amino thioacids and peptide thioacids and their applications in chemoselective amide bond formation, ligation of peptides/proteins/glycopeptides and synthesis of peptidomimetics are reviewed.
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Affiliation(s)
- Narendra N.
- Department of Chemistry
- University College of Science
- Tumkur University
- Tumkur 572 103
- India
| | - Vishwanatha M. Thimmalapura
- Room No. 109
- Peptide Research Laboratory
- Department of Studies in Chemistry
- Central College Campus
- Dr B. R. Ambedkar Veedhi
| | - Basavaprabhu Hosamani
- Room No. 109
- Peptide Research Laboratory
- Department of Studies in Chemistry
- Central College Campus
- Dr B. R. Ambedkar Veedhi
| | - Girish Prabhu
- Room No. 109
- Peptide Research Laboratory
- Department of Studies in Chemistry
- Central College Campus
- Dr B. R. Ambedkar Veedhi
| | - L. Roopesh Kumar
- Room No. 109
- Peptide Research Laboratory
- Department of Studies in Chemistry
- Central College Campus
- Dr B. R. Ambedkar Veedhi
| | - Vommina V. Sureshbabu
- Room No. 109
- Peptide Research Laboratory
- Department of Studies in Chemistry
- Central College Campus
- Dr B. R. Ambedkar Veedhi
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6
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Zhu YP, Mampuys P, Sergeyev S, Ballet S, Maes BUW. Amine Activation:N-Arylamino Acid Amide Synthesis from Isothioureas and Amino Acids. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201700134] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Yan-Ping Zhu
- Organic Synthesis, Department of Chemistry; University of Antwerp; Groenenborgerlaan 171, B- 2020 Antwerp Belgium
| | - Pieter Mampuys
- Organic Synthesis, Department of Chemistry; University of Antwerp; Groenenborgerlaan 171, B- 2020 Antwerp Belgium
| | - Sergey Sergeyev
- Organic Synthesis, Department of Chemistry; University of Antwerp; Groenenborgerlaan 171, B- 2020 Antwerp Belgium
| | - Steven Ballet
- Research Group of Organic Chemistry; Departments of Bioengineering Sciences and Chemistry; Vrije Universiteit Brussel; Pleinlaan 2, B- 1050 Brussels Belgium
| | - Bert U. W. Maes
- Organic Synthesis, Department of Chemistry; University of Antwerp; Groenenborgerlaan 171, B- 2020 Antwerp Belgium
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7
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Levinson AM, McGee JH, Roberts AG, Creech GS, Wang T, Peterson MT, Hendrickson RC, Verdine GL, Danishefsky SJ. Total Chemical Synthesis and Folding of All-l and All-d Variants of Oncogenic KRas(G12V). J Am Chem Soc 2017; 139:7632-7639. [PMID: 28448128 PMCID: PMC5606205 DOI: 10.1021/jacs.7b02988] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The Ras proteins are essential GTPases involved in the regulation of cell proliferation and survival. Mutated oncogenic forms of Ras alter effector binding and innate GTPase activity, leading to deregulation of downstream signal transduction. Mutated forms of Ras are involved in approximately 30% of human cancers. Despite decades of effort to develop direct Ras inhibitors, Ras has long been considered "undruggable" due to its high affinity for GTP and its lack of hydrophobic binding pockets. Herein, we report a total chemical synthesis of all-l- and all-d-amino acid biotinylated variants of oncogenic mutant KRas(G12V). The protein is synthesized using Fmoc-based solid-phase peptide synthesis and assembled using combined native chemical ligation and isonitrile-mediated activation strategies. We demonstrate that both KRas(G12V) enantiomers can successfully fold and bind nucleotide substrates and binding partners with observable enantiodiscrimination. By demonstrating the functional competency of a mirror-image form of KRas bound to its corresponding enantiomeric nucleotide triphosphate, this study sets the stage for further biochemical studies with this material. In particular, this protein will enable mirror-image yeast surface display experiments to identify all-d peptide ligands for oncogenic KRas, providing a useful tool in the search for new therapeutics against this challenging disease target.
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Affiliation(s)
- Adam M. Levinson
- Laboratory for Bio-Organic Chemistry, Sloan Kettering Institute (SKI) for Cancer Research, New York, New York 10065, United States of America
- Chemical Biology Program, Sloan Kettering Institute (SKI) for Cancer Research, New York, New York 10065, United States of America
- Tri-Institutional PhD Program in Chemical Biology, Weill Cornell Medical College, New York, New York, United States of America
| | - John H. McGee
- Departments of Molecular and Cellular Biology, Stem Cell and Regenerative Biology, and Chemistry and Chemical Biology, Harvard University and Harvard Medical School, Cambridge, MA 02138
| | - Andrew G. Roberts
- Laboratory for Bio-Organic Chemistry, Sloan Kettering Institute (SKI) for Cancer Research, New York, New York 10065, United States of America
- Chemical Biology Program, Sloan Kettering Institute (SKI) for Cancer Research, New York, New York 10065, United States of America
| | - Gardner S. Creech
- Laboratory for Bio-Organic Chemistry, Sloan Kettering Institute (SKI) for Cancer Research, New York, New York 10065, United States of America
- Chemical Biology Program, Sloan Kettering Institute (SKI) for Cancer Research, New York, New York 10065, United States of America
| | - Ting Wang
- Laboratory for Bio-Organic Chemistry, Sloan Kettering Institute (SKI) for Cancer Research, New York, New York 10065, United States of America
- Chemical Biology Program, Sloan Kettering Institute (SKI) for Cancer Research, New York, New York 10065, United States of America
| | - Michael T. Peterson
- Laboratory for Bio-Organic Chemistry, Sloan Kettering Institute (SKI) for Cancer Research, New York, New York 10065, United States of America
- Chemical Biology Program, Sloan Kettering Institute (SKI) for Cancer Research, New York, New York 10065, United States of America
| | - Ronald C. Hendrickson
- Chemical Biology Program, Sloan Kettering Institute (SKI) for Cancer Research, New York, New York 10065, United States of America
| | - Gregory L. Verdine
- Departments of Molecular and Cellular Biology, Stem Cell and Regenerative Biology, and Chemistry and Chemical Biology, Harvard University and Harvard Medical School, Cambridge, MA 02138
| | - Samuel J. Danishefsky
- Laboratory for Bio-Organic Chemistry, Sloan Kettering Institute (SKI) for Cancer Research, New York, New York 10065, United States of America
- Chemical Biology Program, Sloan Kettering Institute (SKI) for Cancer Research, New York, New York 10065, United States of America
- Department of Chemistry, Columbia University, Havemeyer Hall, 3000 Broadway, New York, New York 10027, United States of America
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8
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Kondasinghe TD, Saraha HY, Odeesho SB, Stockdill JL. Direct palladium-mediated on-resin disulfide formation from Allocam protected peptides. Org Biomol Chem 2017; 15:2914-2918. [PMID: 28327729 PMCID: PMC5475270 DOI: 10.1039/c7ob00536a] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The synthesis of disulfide-containing polypeptides represents a long-standing challenge in peptide chemistry, and broadly applicable methods for the construction of disulfides are in constant demand. Few strategies exist for on-resin formation of disulfides directly from their protected counterparts. We present herein a novel strategy for the on-resin construction of disulfides directly from Allocam-protected cysteines. Our palladium-mediated approach is mild and uses readily available reagents, requiring no special equipment. No reduced peptide intermediates or S-allylated products are observed, and no residual palladium can be detected in the final products. The utility of this method is demonstrated through the synthesis of the C-carboxy analog of oxytocin.
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Affiliation(s)
| | - Hasina Y Saraha
- Department of Chemistry, Wayne State University, Detroit, MI 48202, USA.
| | - Samantha B Odeesho
- Department of Chemistry, Wayne State University, Detroit, MI 48202, USA.
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9
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Abstract
The present review offers an overview of nonclassical (e.g., with no pre- or in situ activation of a carboxylic acid partner) approaches for the construction of amide bonds. The review aims to comprehensively discuss relevant work, which was mainly done in the field in the last 20 years. Organization of the data follows a subdivision according to substrate classes: catalytic direct formation of amides from carboxylic and amines ( section 2 ); the use of carboxylic acid surrogates ( section 3 ); and the use of amine surrogates ( section 4 ). The ligation strategies (NCL, Staudinger, KAHA, KATs, etc.) that could involve both carboxylic acid and amine surrogates are treated separately in section 5 .
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Affiliation(s)
- Renata Marcia de Figueiredo
- Institut Charles Gerhardt de Montpellier (ICGM), UMR 5253-CNRS-UM-ENSCM, Ecole Nationale Supérieure de Chimie , 8 rue de l'Ecole Normale, 34296 Montpellier Cedex 5, France
| | - Jean-Simon Suppo
- Institut Charles Gerhardt de Montpellier (ICGM), UMR 5253-CNRS-UM-ENSCM, Ecole Nationale Supérieure de Chimie , 8 rue de l'Ecole Normale, 34296 Montpellier Cedex 5, France
| | - Jean-Marc Campagne
- Institut Charles Gerhardt de Montpellier (ICGM), UMR 5253-CNRS-UM-ENSCM, Ecole Nationale Supérieure de Chimie , 8 rue de l'Ecole Normale, 34296 Montpellier Cedex 5, France
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10
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Hutton CA, Shang J, Wille U. Synthesis of Peptides by Silver-Promoted Coupling of Carboxylates and Thioamides: Mechanistic Insight from Computational Studies. Chemistry 2016; 22:3163-9. [PMID: 26813415 DOI: 10.1002/chem.201503753] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2015] [Indexed: 11/05/2022]
Abstract
The mechanism of the recently described N→C direction peptide synthesis through silver-promoted coupling of N-protected amino acids with thioacetylated amino esters was explored by using density functional theory. Calculation of the potential energy surfaces for various pathways revealed that the reaction proceeds through silver-assisted addition of the carboxylate to the thioamide, which is followed by deprotonation and silver-mediated extrusion of sulfur as Ag2 S. The resulting isoimide is the key intermediate, which subsequently rearranges to an imide through a concerted pericyclic [1,3]-acyl shift (O-sp(2) N 1,3-acyl migration). The proposed mechanism clearly emphasises the requirement of two equivalents of Ag(I) and basic reaction conditions, which is in full agreement with the experimental findings. Alternative rearrangement pathways involving only one equivalent of Ag(I) or through O-sp(3) N 1,3-acyl migration can be excluded. The computations further revealed that peptide couplings involving thioformamides require significant conformational changes in the intermediate isoformimide, which slow down the rearrangement process.
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Affiliation(s)
- Craig A Hutton
- School of Chemistry and Bio21 Institute, The University of Melbourne, 30 Flemington Road, Parkville, VIC, 3010, Australia.
| | - Jing Shang
- School of Chemistry and Bio21 Institute, The University of Melbourne, 30 Flemington Road, Parkville, VIC, 3010, Australia
| | - Uta Wille
- School of Chemistry and Bio21 Institute, The University of Melbourne, 30 Flemington Road, Parkville, VIC, 3010, Australia.
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11
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Roberts AG, Johnston EV, Shieh JH, Sondey JP, Hendrickson RC, Moore MAS, Danishefsky SJ. Fully Synthetic Granulocyte Colony-Stimulating Factor Enabled by Isonitrile-Mediated Coupling of Large, Side-Chain-Unprotected Peptides. J Am Chem Soc 2015; 137:13167-75. [PMID: 26401918 PMCID: PMC4617663 DOI: 10.1021/jacs.5b08754] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Human granulocyte colony-stimulating factor (G-CSF) is an endogenous glycoprotein involved in hematopoiesis. Natively glycosylated and nonglycosylated recombinant forms, lenograstim and filgrastim, respectively, are used clinically to manage neutropenia in patients undergoing chemotherapeutic treatment. Despite their comparable therapeutic potential, the purpose of O-linked glycosylation at Thr133 remains a subject of controversy. In light of this, we have developed a synthetic platform to prepare G-CSF aglycone with the goal of enabling access to native and designed glycoforms with site-selectivity and glycan homogeneity. To address the synthesis of a relatively large, aggregation-prone sequence, we advanced an isonitrile-mediated ligation method. The chemoselective activation and coupling of C-terminal peptidyl Gly thioacids with the N-terminus of an unprotected peptide provide ligated peptides directly in a manner complementary to that with conventional native chemical ligation-desulfurization strategies. Herein, we describe the details and application of this method as it enabled the convergent total synthesis of G-CSF aglycone.
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Affiliation(s)
- Andrew G. Roberts
- Laboratory for Bio-Organic Chemistry, Sloan Kettering Institute (SKI) for Cancer Research, New York, New York 10065, United States
- Chemical Biology Program, Sloan Kettering Institute (SKI) for Cancer Research, New York, New York 10065, United States
| | - Eric V. Johnston
- Laboratory for Bio-Organic Chemistry, Sloan Kettering Institute (SKI) for Cancer Research, New York, New York 10065, United States
- Chemical Biology Program, Sloan Kettering Institute (SKI) for Cancer Research, New York, New York 10065, United States
| | - Jae-Hung Shieh
- Cell Biology Program, Sloan Kettering Institute (SKI) for Cancer Research, New York, New York 10065, United States
| | - Joseph P. Sondey
- Chemical Biology Program, Sloan Kettering Institute (SKI) for Cancer Research, New York, New York 10065, United States
| | - Ronald C. Hendrickson
- Chemical Biology Program, Sloan Kettering Institute (SKI) for Cancer Research, New York, New York 10065, United States
| | - Malcolm A. S. Moore
- Cell Biology Program, Sloan Kettering Institute (SKI) for Cancer Research, New York, New York 10065, United States
| | - Samuel J. Danishefsky
- Laboratory for Bio-Organic Chemistry, Sloan Kettering Institute (SKI) for Cancer Research, New York, New York 10065, United States
- Chemical Biology Program, Sloan Kettering Institute (SKI) for Cancer Research, New York, New York 10065, United States
- Cell Biology Program, Sloan Kettering Institute (SKI) for Cancer Research, New York, New York 10065, United States
- Department of Chemistry, Columbia University, New York, New York 10027, United States
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12
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Raj M, Wu H, Blosser SL, Vittoria MA, Arora PS. Aldehyde capture ligation for synthesis of native peptide bonds. J Am Chem Soc 2015; 137:6932-40. [PMID: 25966041 DOI: 10.1021/jacs.5b03538] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Chemoselective reactions for amide bond formation have transformed the ability to access synthetic proteins and other bioconjugates through ligation of fragments. In these ligations, amide bond formation is accelerated by transient enforcement of an intramolecular reaction between the carboxyl and the amine termini of two fragments. Building on this principle, we introduce an aldehyde capture ligation that parlays the high chemoselective reactivity of aldehydes and amines to enforce amide bond formation between amino acid residues and peptides that are difficult to ligate by existing technologies.
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Affiliation(s)
- Monika Raj
- Department of Chemistry, New York University, 100 Washington Square East, New York, New York 10003, United States
| | - Huabin Wu
- Department of Chemistry, New York University, 100 Washington Square East, New York, New York 10003, United States
| | - Sarah L Blosser
- Department of Chemistry, New York University, 100 Washington Square East, New York, New York 10003, United States
| | - Marc A Vittoria
- Department of Chemistry, New York University, 100 Washington Square East, New York, New York 10003, United States
| | - Paramjit S Arora
- Department of Chemistry, New York University, 100 Washington Square East, New York, New York 10003, United States
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13
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Suppo JS, Subra G, Bergès M, Marcia de Figueiredo R, Campagne JM. Inverse Peptide Synthesis via Activated α-Aminoesters. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201402147] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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14
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Suppo JS, Subra G, Bergès M, Marcia de Figueiredo R, Campagne JM. Inverse Peptide Synthesis via Activated α-Aminoesters. Angew Chem Int Ed Engl 2014; 53:5389-93. [DOI: 10.1002/anie.201402147] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2014] [Indexed: 12/21/2022]
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15
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Pourvali A, Cochrane JR, Hutton CA. A new method for peptide synthesis in the N→C direction: amide assembly through silver-promoted reaction of thioamides. Chem Commun (Camb) 2014; 50:15963-6. [DOI: 10.1039/c4cc07601j] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The Ag(i)-promoted coupling of peptide-acids with thioamides generates peptide-imides, which was exploited in the synthesis of peptides in the N→C direction.
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Affiliation(s)
- Aysa Pourvali
- School of Chemistry and Bio21 Molecular Science and Biotechnology Institute
- University of Melbourne
- , Australia
| | - James R. Cochrane
- School of Chemistry and Bio21 Molecular Science and Biotechnology Institute
- University of Melbourne
- , Australia
| | - Craig A. Hutton
- School of Chemistry and Bio21 Molecular Science and Biotechnology Institute
- University of Melbourne
- , Australia
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16
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Solid-phase peptide synthesis and solid-phase fragment coupling mediated by isonitriles. Proc Natl Acad Sci U S A 2013; 110:11708-13. [PMID: 23821753 DOI: 10.1073/pnas.1310431110] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
The synthesis of polypeptides on solid phase via mediation by isonitriles is described. The acyl donor is a thioacid, which presumably reacts with the isonitrile to generate a thio-formimidate carboxylate mixed anhydride intermediate. Applications of this chemistry to reiterative solid-phase peptide synthesis as well as solid-phase fragment coupling are described.
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17
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Mechanistic insights into N- or P-centered nucleophile promoted thiol–vinylsulfone Michael addition. Tetrahedron 2013. [DOI: 10.1016/j.tet.2013.04.123] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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18
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Bianchini G, Sorella GL, Canever N, Scarso A, Strukul G. Efficient isonitrile hydration through encapsulation within a hexameric self-assembled capsule and selective inhibition by a photo-controllable competitive guest. Chem Commun (Camb) 2013; 49:5322-4. [DOI: 10.1039/c3cc42233j] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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