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Irabuena C, Posada L, Colombo S, Aubriot L, Rey L, Villalba J, Badagian N, Brena B, Scarone L, Davyt D, Serra G. Synthesis of Cyclopeptides Analogues of Natural Products and Evaluation as Herbicides and Inhibitors of Cyanobacteria. ACS OMEGA 2024; 9:20167-20175. [PMID: 38737041 PMCID: PMC11079878 DOI: 10.1021/acsomega.4c00311] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Revised: 04/15/2024] [Accepted: 04/19/2024] [Indexed: 05/14/2024]
Abstract
Natural products derived from plants or microorganisms have been considered as eco-friendly herbicides with application in crop protection. Several natural cyclopeptides have been reported as herbicides, while others have been identified as inhibitors of cyanobacteria. In this work, the syntheses of cyclotetrapeptides and cyclopentapeptides analogues of natural products were successfully performed by solid-phase peptide synthesis of their linear precursor and solution-phase macrolactamization. Four of the obtained peptides and cyclopeptides present phytotoxicity with more than 70% of radicle growth inhibition at 67 μg/mL. In addition, evaluation of 20 peptides and cyclopeptides, as inhibitors of cyanobacteria, rendered five active compounds that reduced the concentration of microcystins in the culture medium.
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Affiliation(s)
- Camila Irabuena
- Laboratorio
de Química Farmacéutica, Departamento de Química
Orgánica, Facultad de Química, Universidad de la República, General Flores 2124, Montevideo 11800, Uruguay
| | - Laura Posada
- Laboratorio
de Química Farmacéutica, Departamento de Química
Orgánica, Facultad de Química, Universidad de la República, General Flores 2124, Montevideo 11800, Uruguay
| | - Sol Colombo
- Grupo
de Ecología y Fisiología de Fitoplancton, Sección
Limnología, IECA, Facultad de Ciencias, Universidad de la República, Iguá 4225, Montevideo 11400, Uruguay
| | - Luis Aubriot
- Grupo
de Ecología y Fisiología de Fitoplancton, Sección
Limnología, IECA, Facultad de Ciencias, Universidad de la República, Iguá 4225, Montevideo 11400, Uruguay
| | - Luciana Rey
- Estación
experimental Dr. Mario A. Cassinoni, Facultad de Agronomía, Universidad de la República, Ruta 3 Km 363, Paysandú 60000, Uruguay
| | - Juana Villalba
- Estación
experimental Dr. Mario A. Cassinoni, Facultad de Agronomía, Universidad de la República, Ruta 3 Km 363, Paysandú 60000, Uruguay
| | - Natalia Badagian
- Área
Bioquímica, Departamento de Biociencias, Facultad de Química, Universidad de la República, General Flores 2124, Montevideo 11800, Uruguay
| | - Beatriz Brena
- Área
Bioquímica, Departamento de Biociencias, Facultad de Química, Universidad de la República, General Flores 2124, Montevideo 11800, Uruguay
| | - Laura Scarone
- Laboratorio
de Química Farmacéutica, Departamento de Química
Orgánica, Facultad de Química, Universidad de la República, General Flores 2124, Montevideo 11800, Uruguay
| | - Danilo Davyt
- Laboratorio
de Química Farmacéutica, Departamento de Química
Orgánica, Facultad de Química, Universidad de la República, General Flores 2124, Montevideo 11800, Uruguay
| | - Gloria Serra
- Laboratorio
de Química Farmacéutica, Departamento de Química
Orgánica, Facultad de Química, Universidad de la República, General Flores 2124, Montevideo 11800, Uruguay
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2
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Zheng Y, Yu L, Zou Y, Yang Y, Wang C. Steric Dependence of Chirality Effect in Surface-Mediated Peptide Assemblies Identified with Scanning Tunneling Microscopy. NANO LETTERS 2019; 19:5403-5409. [PMID: 31265784 DOI: 10.1021/acs.nanolett.9b01904] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Amino acid chirality has been recognized as an important driving force in constructing peptide architectures, via interactions such as chirality-induced stereochemical effect. The introduction of site-specific chiral conversion of l- and d-amino acids in peptide sequences could enable the pursuit of the chirality effects in peptide assembly. In this work, we characterized the assemblies of heptapeptides with various side chain moieties and their chiral variants using STM. Specifically, two pairs of amino acids, Gln (Q) and Asn (N), Glu (E) and Asp (D), having one methylene difference in their side chains, are selected to elucidate the steric dependence of amino acid chiral effects on surface-bound peptide assemblies. The observed heptapeptide assembly structures reveal that chirality switching of a single amino acid is able to destabilize the surface-mediated peptide assemblies, and this disturbance effect can be positively correlated with the steric hindrance of amino acid side chains. Furthermore, the strength of the impact due to chiral conversion on heptapeptide assembly structure is noticeably dependent on the mutation sites, indicative of structural heterogeneity of chiral effects. These results could contribute to the molecular insights of chirality-induced stereochemical interactions in peptide assembly.
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Affiliation(s)
- Yongfang Zheng
- CAS Key Laboratory of Biological Effects of Nanomaterials and Nanosafety, CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience , National Center for Nanoscience and Technology , Beijing 100190 , P. R. China
- Department of Chemistry , Tsinghua University , Beijing 100084 , P. R. China
- University of Chinese Academy of Sciences , Beijing 100049 , P. R. China
| | - Lanlan Yu
- CAS Key Laboratory of Biological Effects of Nanomaterials and Nanosafety, CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience , National Center for Nanoscience and Technology , Beijing 100190 , P. R. China
- University of Chinese Academy of Sciences , Beijing 100049 , P. R. China
| | - Yimin Zou
- CAS Key Laboratory of Biological Effects of Nanomaterials and Nanosafety, CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience , National Center for Nanoscience and Technology , Beijing 100190 , P. R. China
- University of Chinese Academy of Sciences , Beijing 100049 , P. R. China
| | - Yanlian Yang
- CAS Key Laboratory of Biological Effects of Nanomaterials and Nanosafety, CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience , National Center for Nanoscience and Technology , Beijing 100190 , P. R. China
- University of Chinese Academy of Sciences , Beijing 100049 , P. R. China
| | - Chen Wang
- CAS Key Laboratory of Biological Effects of Nanomaterials and Nanosafety, CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience , National Center for Nanoscience and Technology , Beijing 100190 , P. R. China
- University of Chinese Academy of Sciences , Beijing 100049 , P. R. China
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3
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Bérubé C, Gagnon D, Borgia A, Richard D, Voyer N. Total synthesis and antimalarial activity of mortiamides A–D. Chem Commun (Camb) 2019; 55:7434-7437. [DOI: 10.1039/c9cc02864a] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This work describes the first total synthesis of mortiamides and their anti-malarial activity against a multi-drug resistant strain of Plasmodium falciparum.
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Affiliation(s)
- Christopher Bérubé
- Département de Chimie and PROTEO
- Université Laval
- Faculté des sciences et de génie
- Québec
- Canada
| | - Dominic Gagnon
- Département de microbiologie-infectiologie et d’immunologie
- Université Laval
- Québec
- Canada
| | - Alexandre Borgia
- Département de Chimie and PROTEO
- Université Laval
- Faculté des sciences et de génie
- Québec
- Canada
| | - Dave Richard
- Département de microbiologie-infectiologie et d’immunologie
- Université Laval
- Québec
- Canada
| | - Normand Voyer
- Département de Chimie and PROTEO
- Université Laval
- Faculté des sciences et de génie
- Québec
- Canada
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4
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Arbour CA, Saraha HY, McMillan TF, Stockdill JL. Exploiting the MeDbz Linker To Generate Protected or Unprotected C-Terminally Modified Peptides. Chemistry 2017; 23:12484-12488. [PMID: 28741313 PMCID: PMC5674808 DOI: 10.1002/chem.201703380] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2017] [Indexed: 12/15/2022]
Abstract
C-terminally modified peptides are important targets for pharmaceutical and biochemical applications. Known methods for C-terminal diversification are limited mainly in terms of the scope of accessible modifications or by epimerization of the C-terminal amino acid. In this work, we present a broadly applicable approach that enables access to a variety of C-terminally functionalized peptides in either protected or unprotected form. This chemistry proceeds without epimerization of C-terminal Ala and tolerates nucleophiles of varying nucleophilicity. Finally, unprotected peptides bearing nucleophilic side chain groups can be selectively functionalized by strong nucleophiles, whereas macrocyclization is observed for weaker nucleophiles. The potential utility of this method is demonstrated through the divergent synthesis of the conotoxin conopressin G and GLP-1(7-36) and analogs.
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Affiliation(s)
- Christine A Arbour
- Department of Chemistry, Wayne State University, Detroit, MI, 48202, USA
| | - Hasina Y Saraha
- Department of Chemistry, Wayne State University, Detroit, MI, 48202, USA
| | - Timothy F McMillan
- Department of Chemistry, Wayne State University, Detroit, MI, 48202, USA
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5
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Puentes AR, Morejón MC, Rivera DG, Wessjohann LA. Peptide Macrocyclization Assisted by Traceless Turn Inducers Derived from Ugi Peptide Ligation with Cleavable and Resin-Linked Amines. Org Lett 2017; 19:4022-4025. [PMID: 28704057 DOI: 10.1021/acs.orglett.7b01761] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A multicomponent approach enabling the installation of turn-inducing moieties that facilitate the macrocyclization of short and medium-size oligopeptides is described. The strategy comprises the Ugi ligation of peptide carboxylic acids and isocyanopeptides in the presence of aldehydes and acid or photolabile amines followed by cyclization and cleavage of the backbone N-substituents to render canonical cyclopeptides. Implementing the approach on solid phase with the use of Rink amide resins led to a new class of backbone amide linker strategy.
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Affiliation(s)
- Alfredo R Puentes
- Department of Bioorganic Chemistry, Leibniz Institute of Plant Biochemistry , Weinberg 3, 06120 Halle/Saale, Germany.,Center for Natural Products Research, Faculty of Chemistry, University of Havana , Zapata y G, 10400 Havana, Cuba
| | - Micjel C Morejón
- Department of Bioorganic Chemistry, Leibniz Institute of Plant Biochemistry , Weinberg 3, 06120 Halle/Saale, Germany.,Center for Natural Products Research, Faculty of Chemistry, University of Havana , Zapata y G, 10400 Havana, Cuba
| | - Daniel G Rivera
- Department of Bioorganic Chemistry, Leibniz Institute of Plant Biochemistry , Weinberg 3, 06120 Halle/Saale, Germany.,Center for Natural Products Research, Faculty of Chemistry, University of Havana , Zapata y G, 10400 Havana, Cuba
| | - Ludger A Wessjohann
- Department of Bioorganic Chemistry, Leibniz Institute of Plant Biochemistry , Weinberg 3, 06120 Halle/Saale, Germany
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6
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Chen CC, Wang SF, Su YY, Lin YA, Lin PC. Copper(I)-Mediated Denitrogenative Macrocyclization for the Synthesis of Cyclic α3
β-Tetrapeptide Analogues. Chem Asian J 2017; 12:1326-1337. [DOI: 10.1002/asia.201700339] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2017] [Revised: 03/23/2017] [Indexed: 12/23/2022]
Affiliation(s)
- Chun-Chi Chen
- Department of Chemistry; Nation Sun Yat-sen University; 70 Lienhai Rd. Kaohsiung 80424 Taiwan
| | - Sheng-Fu Wang
- Department of Chemistry; Nation Sun Yat-sen University; 70 Lienhai Rd. Kaohsiung 80424 Taiwan
| | - Yung-Yu Su
- Department of Chemistry; Nation Sun Yat-sen University; 70 Lienhai Rd. Kaohsiung 80424 Taiwan
| | - Yuya A. Lin
- Department of Chemistry; Nation Sun Yat-sen University; 70 Lienhai Rd. Kaohsiung 80424 Taiwan
| | - Po-Chiao Lin
- Department of Chemistry; Nation Sun Yat-sen University; 70 Lienhai Rd. Kaohsiung 80424 Taiwan
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7
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Hill TA, Shepherd NE, Diness F, Fairlie DP. Constraining cyclic peptides to mimic protein structure motifs. Angew Chem Int Ed Engl 2014; 53:13020-41. [PMID: 25287434 DOI: 10.1002/anie.201401058] [Citation(s) in RCA: 305] [Impact Index Per Article: 30.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2014] [Revised: 04/02/2013] [Indexed: 12/18/2022]
Abstract
Many proteins exert their biological activities through small exposed surface regions called epitopes that are folded peptides of well-defined three-dimensional structures. Short synthetic peptide sequences corresponding to these bioactive protein surfaces do not form thermodynamically stable protein-like structures in water. However, short peptides can be induced to fold into protein-like bioactive conformations (strands, helices, turns) by cyclization, in conjunction with the use of other molecular constraints, that helps to fine-tune three-dimensional structure. Such constrained cyclic peptides can have protein-like biological activities and potencies, enabling their uses as biological probes and leads to therapeutics, diagnostics and vaccines. This Review highlights examples of cyclic peptides that mimic three-dimensional structures of strand, turn or helical segments of peptides and proteins, and identifies some additional restraints incorporated into natural product cyclic peptides and synthetic macrocyclic peptidomimetics that refine peptide structure and confer biological properties.
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Affiliation(s)
- Timothy A Hill
- Division of Chemistry and Structural Biology, Institute for Molecular Bioscience, The University of Queensland, Brisbane, Queensland 4072 (Australia)
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8
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Hill TA, Shepherd NE, Diness F, Fairlie DP. Fixierung cyclischer Peptide: Mimetika von Proteinstrukturmotiven. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201401058] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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9
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Angelici G, Castellucci N, Tomasini C. Conformational studies on a medium size cyclopseudopeptide containing the oxazolidin-2-one moiety. J PHYS ORG CHEM 2012. [DOI: 10.1002/poc.2977] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Gaetano Angelici
- Department of Chemistry; University of Basel; St. Johanns-Ring 19; CH-4056; Basel; Switzerland
| | - Nicola Castellucci
- Dipartimento di Chimica ‘G. Ciamician’; Università di Bologna; Via Selmi 2; I-40126; Bologna; Italy
| | - Claudia Tomasini
- Dipartimento di Chimica ‘G. Ciamician’; Università di Bologna; Via Selmi 2; I-40126; Bologna; Italy
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10
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Abstract
Peptide macrocycles have found applications that range from drug discovery to nanomaterials. These ring-shaped molecules have shown remarkable capacity for functional fine-tuning. Such capacity is enabled by the possibility of adjusting the peptide conformation using the techniques of chemical synthesis. Cyclic peptides have been difficult, and often impossible, to prepare using traditional synthetic methods. For macrocyclization to occur, the activated peptide must adopt an entropically disfavoured pre-cyclization conformation before forming the desired product. Here, we review recent solutions to some of the major challenges in this important area of contemporary synthesis.
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11
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12
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Jogalekar AS. Conformations of stevastelin C3 analogs: Computational deconvolution of NMR data reveals conformational heterogeneity and novel motifs. Biopolymers 2010; 93:968-76. [DOI: 10.1002/bip.21504] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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13
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Dong M, Narang P, Pinon DI, Bordner AJ, Miller LJ. Refinement of the pharmacophore of an agonist ligand of the secretin receptor using conformationally constrained cyclic hexapeptides. Peptides 2010; 31:1094-8. [PMID: 20214947 PMCID: PMC2872052 DOI: 10.1016/j.peptides.2010.02.024] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/21/2010] [Revised: 02/22/2010] [Accepted: 02/25/2010] [Indexed: 11/24/2022]
Abstract
There is a compelling need for the development of small molecule agonists acting at family B G protein-coupled receptors. A possible lead for the development of such drugs was reported when it was recognized that sequences endogenous to the amino terminus of the secretin receptor and certain other receptors in this family possess weak full agonist activity (Dong et al. Mol Pharmacol 2006;70:206-213). In the current report, we extended those observations by building the active dipeptide motif found in the secretin receptor (WD) into each position around a conformationally constrained d-amino acid-containing cyclic hexapeptide, and determining the biological activity of each peptide at the secretin receptor. Indeed, only two positions for WD around this constrained ring resulted in biological activity at the receptor, providing further insights into the structural specificity of this phenomenon. Molecular modeling supported the presence of a unique WD backbone conformation shared only by these active peptides, and provided a more constrained template for future receptor-active agonist drug development.
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Affiliation(s)
| | | | | | | | - Laurence J. Miller
- Please send all correspondence and reprint requests to: Laurence J. Miller, M.D., Mayo Clinic, 13400 East Shea Boulevard, Scottsdale, AZ 85259, Telephone: (480) 301-6650, Fax: (480) 301-6969,
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14
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Roberts KD, Ede NJ. Examination of methodology for the synthesis of cyclic thioether peptide libraries derived from linear tripeptides. J Pept Sci 2007; 13:811-21. [PMID: 17880033 DOI: 10.1002/psc.904] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Work was undertaken to examine methodology for the cyclization of linear tripeptides on the solid phase via intramolecular S-alkylation using the Multipin(trade mark) Solid-Phase Peptide Synthesis platform. While previous work had shown that this chemistry could be used to efficiently cyclize linear tetrapeptide libraries, application of this synthetic strategy to the model linear tripeptide sequence Leu-Ser-Lys resulted in significant cyclic dimer formation. Ultimately, it was found that the addition of a large excess of lithium in the form of LiCl to the cyclization solution, significantly reduced cyclic dimer formation affording highly pure crude cyclic monomer. The application of this modified cyclization protocol to the preparation of cyclic peptide libraries was successfully demonstrated with the synthesis of a 20-membered library 4{1-20} based on the linear tripeptide sequence Leu-Xxx-Lys in which the position Xxx was varied with the standard 20 proteogenic residues.
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Affiliation(s)
- Kade D Roberts
- Mimotopes Pty Ltd, 11 Dueridin Street, Clayton, Victoria 3168, Australia.
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15
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Jeremic T, Linden A, Moehle K, Heimgartner H. Synthesis and conformational analysis of 18-membered Aib-containing cyclohexapeptides. Tetrahedron 2005. [DOI: 10.1016/j.tet.2004.12.012] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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16
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Jeremic T, Linden A, Heimgartner H. Synthesis of Cyclohexapeptides Containing Pro and Aib Residues. Helv Chim Acta 2004. [DOI: 10.1002/hlca.200490275] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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17
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Abstract
Constricting the peptide backbone into a more defined conformational form through cyclization is an activity evolved in nature and in synthetic work, the latter straddling only the most recent decades. The resulting conformational constraints increase the probability of an optimum response with bio-receptors. The purpose of this review is to highlight developments that have proved to be reasonably efficient in the macrocyclization of linear precursors into cyclic peptides and depsipeptides.
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Affiliation(s)
- John S Davies
- Department of Chemistry, University of Wales, Swansea, Singleton Park, Swansea SA2 8PP, UK.
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18
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Meutermans WDF, Bourne GT, Golding SW, Horton DA, Campitelli MR, Craik D, Scanlon M, Smythe ML. Difficult macrocyclizations: new strategies for synthesizing highly strained cyclic tetrapeptides. Org Lett 2003; 5:2711-4. [PMID: 12868896 DOI: 10.1021/ol034907o] [Citation(s) in RCA: 64] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
[reaction: see text] Cyclic tetrapeptides are an intriguing class of natural products. To synthesize highly strained cyclic tetrapeptides we developed a macrocyclization strategy that involves the inclusion of 2-hydroxy-6-nitrobenzyl (HnB) group at the N-terminus and in the "middle" of the sequence. The N-terminal auxiliary performs a ring closure/ring contraction role, and the backbone auxiliary promotes cis amide bonds to facilitate the otherwise difficult ring contraction. Following this route, the all-L cyclic tetrapeptide cyclo-[Tyr-Arg-Phe-Ala] was successfully prepared.
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Affiliation(s)
- Wim D F Meutermans
- Institute for Molecular Bioscience, The University of Queensland, St. Lucia, QLD 4072, Australia
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19
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Abstract
In this paper, we report the difficult synthesis of cyclo(Leu-Pro-Leu-Pro). While the cyclization of Leu-Pro-Leu-D-Pro did not cause problems, the all-L-peptide afforded cyclodimer rather than cyclotetrapeptide (cyclomonomer). A first attempt using our reversible backbone substitution methodology failed. However, we were successful in obtaining the desired cyclo(Leu-Pro-Leu-Pro) by decreasing the concentration. The ratio of cyclomonomer to cyclodimer was raised to 1:1.1 using BOP and 1:0.6 using HATU under our high dilution condition. The structures of the cyclopeptides were confidently assigned by electrospray ionization mass spectrometry and NMR.
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Affiliation(s)
- M E Haddadi
- Université Abdel Malek Essaadi, Faculté des Sciences, Tetouan, Morocco
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20
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Sager C, Mutter M, Dumy P. Influence of cis-trans isomerisation on pentapeptide cyclisation. Tetrahedron Lett 1999. [DOI: 10.1016/s0040-4039(99)01671-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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21
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Meutermans WDF, Golding SW, Bourne GT, Miranda LP, Dooley MJ, Alewood PF, Smythe ML. Synthesis of Difficult Cyclic Peptides by Inclusion of a Novel Photolabile Auxiliary in a Ring Contraction Strategy. J Am Chem Soc 1999. [DOI: 10.1021/ja992173y] [Citation(s) in RCA: 69] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Wim D. F. Meutermans
- Contribution from the Centre for Drug Design and Development, University of Queensland, Brisbane, Queensland, 4072 Australia
| | - Simon W. Golding
- Contribution from the Centre for Drug Design and Development, University of Queensland, Brisbane, Queensland, 4072 Australia
| | - Greg T. Bourne
- Contribution from the Centre for Drug Design and Development, University of Queensland, Brisbane, Queensland, 4072 Australia
| | - Les P. Miranda
- Contribution from the Centre for Drug Design and Development, University of Queensland, Brisbane, Queensland, 4072 Australia
| | - Michael J. Dooley
- Contribution from the Centre for Drug Design and Development, University of Queensland, Brisbane, Queensland, 4072 Australia
| | - Paul F. Alewood
- Contribution from the Centre for Drug Design and Development, University of Queensland, Brisbane, Queensland, 4072 Australia
| | - Mark L. Smythe
- Contribution from the Centre for Drug Design and Development, University of Queensland, Brisbane, Queensland, 4072 Australia
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22
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Synthesis of the first tricyclic homodetic peptide. Use of coordinated orthogonal deprotection to achieve directed ring closure. Tetrahedron 1998. [DOI: 10.1016/s0040-4020(98)00354-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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23
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Influence of proline and β-turn mimetics on the cyclization of penta- and hexapeptides. ACTA ACUST UNITED AC 1998. [DOI: 10.1007/bf02443454] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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24
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Sowemimo V, Scanlon D, Jones P, Craik DJ. Synthesis of cyclic penta- and hexapeptides: a general synthetic strategy on DAS resin. JOURNAL OF PROTEIN CHEMISTRY 1994; 13:339-46. [PMID: 7945797 DOI: 10.1007/bf01901567] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
The active part or receptor-binding sequence of peptide hormones can usually be defined by a span of 4-8 amino acids. Cyclic penta- and hexapeptides are excellent model systems for performing conformational and structure-function studies on this class of bioactive molecules. A synthetic scheme has been devised comprising solid-phase Fmoc chemistry followed by resin cleavage, cyclization in solution, and, finally, side-chain deprotection. A new resin, DAS, cleaved under weak acid conditions, is an excellent solid-phase synthesis support, and HBTU or PyBOP are the activation reagents of choice, not only during synthesis, but also for the cyclization reaction. Three cyclic peptides were synthesized using this method, one requiring extensive side-chain protection, and this method has general applicability for any cyclic pentapeptide or hexapeptide, giving good yields and high purity.
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Affiliation(s)
- V Sowemimo
- Victorian College of Pharmacy, Monash University, Parkville, Australia
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25
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Synthesis of phosphonomethyl-phenylalanine and phosphotyrosine containing cyclic peptides as inhibitors of protein tyrosine kinase/SH2 interactions. Tetrahedron 1994. [DOI: 10.1016/s0040-4020(01)86985-4] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Ehrlich A, Rothemund S, Brudel M, Beyermann M, Carpino L, Bienert M. Synthesis of cyclic peptides via efficient new coupling reagents. Tetrahedron Lett 1993. [DOI: 10.1016/s0040-4039(00)74087-1] [Citation(s) in RCA: 62] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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