51
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Pelay-Gimeno M, Glas A, Koch O, Grossmann TN. Strukturbasierte Entwicklung von Protein-Protein-Interaktionsinhibitoren: Stabilisierung und Nachahmung von Peptidliganden. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201412070] [Citation(s) in RCA: 80] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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52
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Gokhale AS, Satyanarayanajois S. Peptides and peptidomimetics as immunomodulators. Immunotherapy 2015; 6:755-74. [PMID: 25186605 DOI: 10.2217/imt.14.37] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Peptides and peptidomimetics can function as immunomodulating agents by either blocking the immune response or stimulating the immune response to generate tolerance. Knowledge of B- or T-cell epitopes along with conformational constraints is important in the design of peptide-based immunomodulating agents. Work on the conformational aspects of peptides, synthesis and modified amino acid side chains have contributed to the development of a new generation of therapeutic agents for autoimmune diseases and cancer. The design of peptides/peptidomimetics for immunomodulation in autoimmune diseases such as multiple sclerosis, rheumatoid arthritis, systemic lupus and HIV infection is reviewed. In cancer therapy, peptide epitopes are used in such a way that the body is trained to recognize and fight the cancer cells locally as well as systemically.
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Affiliation(s)
- Ameya S Gokhale
- Basic Pharmaceutical Sciences, College of Pharmacy, University of Louisiana at Monroe, Monroe, LA 71201, USA
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53
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Synthesis and biological evaluations of novel endomorphin analogues containing α-hydroxy-β-phenylalanine (AHPBA) displaying mixed μ/δ opioid receptor agonist and δ opioid receptor antagonist activities. Eur J Med Chem 2015; 92:270-81. [DOI: 10.1016/j.ejmech.2014.12.049] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2014] [Accepted: 12/28/2014] [Indexed: 12/29/2022]
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54
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Perryman MS, Earl MWM, Greatorex S, Clarkson GJ, Fox DJ. Synthesis of 1- and 4-substituted piperazin-2-ones via Jocic-type reactions with N-substituted diamines. Org Biomol Chem 2015; 13:2360-5. [DOI: 10.1039/c4ob02311k] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Enantiomerically-enriched trichloromethyl-containing alcohols are transformed regioselectively into enantiomerically-enriched 1-substituted piperazinones by modified Jocic reactions.
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Affiliation(s)
| | | | - Sam Greatorex
- Department of Chemistry
- University of Warwick
- Coventry
- U.K
| | | | - David J. Fox
- Department of Chemistry
- University of Warwick
- Coventry
- U.K
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55
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Rémond E, Martin C, Martinez J, Cavelier F. Silaproline, a Silicon-Containing Proline Surrogate. TOPICS IN HETEROCYCLIC CHEMISTRY 2015. [DOI: 10.1007/7081_2015_177] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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56
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Kotha S, Bandi V. Diversity Oriented Approach to Phenylalanine Derivatives via the Diels-Alder Reaction Involving Sulfolene Intermediates. HETEROCYCLES 2015. [DOI: 10.3987/com-14-s(k)9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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57
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Md. Abdur Rauf S, Arvidsson PI, Albericio F, Govender T, Maguire GEM, Kruger HG, Honarparvar B. The effect of N-methylation of amino acids (Ac-X-OMe) on solubility and conformation: a DFT study. Org Biomol Chem 2015; 13:9993-10006. [DOI: 10.1039/c5ob01565k] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
N-Methylation of amino acid derivatives (Ac-X-OMe, X = Gly, Val, Leu, Ile, Phe, Met, Cys, Ser, Asp and His) leads to an increase in aqueous solubility, lipophilicity and lowering of the cis/trans amide conformational energy barrier (EA).
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Affiliation(s)
- Shah Md. Abdur Rauf
- Catalysis and Peptide Research Unit
- School of Health Sciences
- University of KwaZulu-Natal
- Durban 4001
- South Africa
| | - Per I. Arvidsson
- Catalysis and Peptide Research Unit
- School of Health Sciences
- University of KwaZulu-Natal
- Durban 4001
- South Africa
| | - Fernando Albericio
- Catalysis and Peptide Research Unit
- School of Health Sciences
- University of KwaZulu-Natal
- Durban 4001
- South Africa
| | - Thavendran Govender
- Catalysis and Peptide Research Unit
- School of Health Sciences
- University of KwaZulu-Natal
- Durban 4001
- South Africa
| | - Glenn E. M. Maguire
- Catalysis and Peptide Research Unit
- School of Health Sciences
- University of KwaZulu-Natal
- Durban 4001
- South Africa
| | - Hendrik G. Kruger
- Catalysis and Peptide Research Unit
- School of Health Sciences
- University of KwaZulu-Natal
- Durban 4001
- South Africa
| | - Bahareh Honarparvar
- Catalysis and Peptide Research Unit
- School of Health Sciences
- University of KwaZulu-Natal
- Durban 4001
- South Africa
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58
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Mándity IM, Olasz B, Ötvös SB, Fülöp F. Continuous-flow solid-phase peptide synthesis: a revolutionary reduction of the amino acid excess. CHEMSUSCHEM 2014; 7:3172-3176. [PMID: 25196512 DOI: 10.1002/cssc.201402436] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2014] [Indexed: 06/03/2023]
Abstract
A highly efficient continuous-flow technique for the synthesis of peptides was developed. The method allows the application of only 1.5 equivalents of amino acids during coupling, while yielding virtually quantitative conversions. A mesoscale reactor was constructed which permits the use of high temperature and pressure during the synthesis. A complete reaction parameter optimization was carried out. Under the optimum conditions, the couplings of all 20 proteinogenic amino acids were achieved with 1.5 amino acid equivalents with quantitative conversions. As a demonstration of the efficiency of the methodology, difficult sequences and β-peptide foldamers with alicyclic side-chains were synthetized in excellent yields and with lower costs thanks to the lower amounts of amino acid and solvent used. By this the synthesis is highly economic and sustainable. Importantly, exotic and expensive artificial amino acids were incorporated into peptidic sequences by the utilization of a reasonable number of amino acid equivalents. The synthesis can be performed in quantities of microgram to gram in an automated way.
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Affiliation(s)
- István M Mándity
- Institute of Pharmaceutical Chemistry, University of Szeged, Eötvös u. 6, 6720 Szeged (Hungary)
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59
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Role of Side-Chain Bioisosteres in Determining the Binding Affinity of Click Chemistry Derived RGD Peptidomimetics to αvβ3Integrin. European J Org Chem 2014. [DOI: 10.1002/ejoc.201403129] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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60
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Diversity-oriented synthesis as a tool for chemical genetics. Molecules 2014; 19:16506-28. [PMID: 25317579 PMCID: PMC6271126 DOI: 10.3390/molecules191016506] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2014] [Revised: 09/30/2014] [Accepted: 10/01/2014] [Indexed: 02/06/2023] Open
Abstract
Chemical genetics is an approach for identifying small molecules with the ability to induce a biological phenotype or to interact with a particular gene product, and it is an emerging tool for lead generation in drug discovery. Accordingly, there is a need for efficient and versatile synthetic processes capable of generating complex and diverse molecular libraries, and Diversity-Oriented Synthesis (DOS) of small molecules is the concept of choice to give access to new chemotypes with high chemical diversity. In this review, the combination of chemical genetics and diversity-oriented synthesis to identify new chemotypes as hit compounds in chemical biology and drug discovery is reported, giving an overview of basic concepts and selected case studies.
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61
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Zhang J, Liu X, Wu C, Zhang P, Chen J, Wang R. Organocatalyzed Asymmetric 1,4-Addition of Azlactones to α,β-Unsaturated Trichloromethyl Ketones: Synthesis of α,α-Disubstituted α-Amino Acid Derivatives. European J Org Chem 2014. [DOI: 10.1002/ejoc.201403158] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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62
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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: 306] [Impact Index Per Article: 30.6] [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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63
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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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64
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Asante V, Mortier J, Wolber G, Koksch B. Impact of fluorination on proteolytic stability of peptides: a case study with α-chymotrypsin and pepsin. Amino Acids 2014; 46:2733-44. [DOI: 10.1007/s00726-014-1819-7] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2014] [Accepted: 07/28/2014] [Indexed: 10/24/2022]
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65
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Conjugates of 1'-aminoferrocene-1-carboxylic acid and proline: synthesis, conformational analysis and biological evaluation. Molecules 2014; 19:12852-80. [PMID: 25153883 PMCID: PMC6271532 DOI: 10.3390/molecules190812852] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2014] [Revised: 08/12/2014] [Accepted: 08/13/2014] [Indexed: 11/29/2022] Open
Abstract
Our previous studies showed that alteration of dipeptides Y-Fca-Ala-OMe (III) into Y-Ala-Fca-OMe (IV) (Y = Ac, Boc; Fca = 1'-aminoferrocene-1-carboxylic acid) significantly influenced their conformational space. The novel bioconjugates Y-Fca-Pro-OMe (1, Y = Ac; 2, Y = Boc) and Y-Pro-Fca-OMe (3, Y = Boc; 4, Y = Ac) have been prepared in order to investigate the influence of proline, a well-known turn-inducer, on the conformational properties of small organometallic peptides with an exchanged constituent amino acid sequences. For this purpose, peptides 1–4 were subjected to detailed spectroscopic analysis (IR, NMR, CD spectroscopy) in solution. The conformation of peptide 3 in the solid state was determined. Furthermore, the ability of the prepared conjugates to inhibit the growth of estrogen receptor-responsive MCF-7 mammary carcinoma cells and HeLa cervical carcinoma cells was tested.
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66
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Castro TG, Micaêlo NM. Conformational and thermodynamic properties of non-canonical α,α-dialkyl glycines in the peptaibol Alamethicin: molecular dynamics studies. J Phys Chem B 2014; 118:9861-70. [PMID: 25091499 DOI: 10.1021/jp505400q] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
In this work, we investigate the structure, dynamic and thermodynamic properties of noncanonical disubstituted amino acids (α,α-dialkyl glycines), also known as non-natural amino acids, in the peptaibol Alamethicin. The amino acids under study are Aib (α-amino isobutyric acid or α-methyl alanine), Deg (α,α-diethyl glycine), Dpg (α,α-dipropyl glycine), Dibg (α,α-di-isobutyl glycine), Dhg (α,α-dihexyl glycine), DΦg (α,α-diphenyl glycine), Dbzg (α,α-dibenzyl glycine), Ac6c (α,α-cyclohexyl glycine), and Dmg (α,α-dihydroxymethyl glycine). It is hypothesized that these amino acids are able to induce well-defined secondary structure in peptidomimetics. To test this hypothesis, new peptidomimetics of Alamethicin were constructed by replacing the native Aib positions of Alamethicin by one or more new α,α-dialkyl glycines. Dhg and Ac6c demonstrated the capacity to induce well-defined α-helical structures. Dhg and Ac6c also promote the thermodynamic stabilization of these peptides in a POPC model membrane and are better alternatives to the Aib in Alamethicin. These noncanonical amino acids also improved secondary structure properties, revealing preorganization in water and maintenance of α helical structure in POPC. We show that it is possible to optimize the helicity and thermodynamic properties of native Alamethicin, and we suggest that these amino acids could be incorporated in other peptides with similar structural effect.
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Affiliation(s)
- Tarsila G Castro
- Departamento de Química, Escola de Ciências, Universidade do Minho , Largo do Paço, Braga 4704-553, Portugal
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67
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Xiao H, Li P, Hu D, Song BA. Synthesis and anti-TMV activity of novel β-amino acid ester derivatives containing quinazoline and benzothiazole moieties. Bioorg Med Chem Lett 2014; 24:3452-4. [DOI: 10.1016/j.bmcl.2014.05.073] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2014] [Revised: 05/19/2014] [Accepted: 05/21/2014] [Indexed: 11/28/2022]
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68
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Chauhan A, Paladhi S, Debnath M, Mandal S, Das RN, Bhowmik S, Dash J. A small molecule peptidomimetic that binds to c-KIT1 G-quadruplex and exhibits antiproliferative properties in cancer cells. Bioorg Med Chem 2014; 22:4422-9. [DOI: 10.1016/j.bmc.2014.05.060] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2014] [Revised: 05/19/2014] [Accepted: 05/28/2014] [Indexed: 10/25/2022]
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69
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Powell NH, Clarkson GJ, Notman R, Raubo P, Martin NG, Shipman M. Synthesis and structure of oxetane containing tripeptide motifs. Chem Commun (Camb) 2014; 50:8797-800. [PMID: 24968282 DOI: 10.1039/c4cc03507k] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
A new class of peptidomimetic is reported in which one of the amide C=O bonds of the peptide backbone is replaced by an oxetane ring. They are synthesised by conjugate addition of various α-amino esters to a 3-(nitromethylene)oxetane, reduction of the nitro group and further coupling with N-Z protected amino acids to grow the peptide chain. Structural insights are provided by X-ray diffraction and molecular dynamics simulations.
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Affiliation(s)
- Nicola H Powell
- Department of Chemistry, University of Warwick, Gibbet Hill Road, Coventry, CV4 7AL, UK.
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70
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Lao BB, Drew K, Guarracino DA, Brewer TF, Heindel DW, Bonneau R, Arora PS. Rational design of topographical helix mimics as potent inhibitors of protein-protein interactions. J Am Chem Soc 2014; 136:7877-88. [PMID: 24972345 PMCID: PMC4353027 DOI: 10.1021/ja502310r] [Citation(s) in RCA: 95] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
![]()
Protein–protein
interactions encompass large surface areas, but
often a handful of key residues dominate the binding energy landscape.
Rationally designed small molecule scaffolds that reproduce the relative
positioning and disposition of important binding residues, termed
“hotspot residues”, have been shown to successfully
inhibit specific protein complexes. Although this strategy has led
to development of novel synthetic inhibitors of protein complexes,
often direct mimicry of natural amino acid residues does not lead
to potent inhibitors. Experimental screening of focused compound libraries
is used to further optimize inhibitors but the number of possible
designs that can be efficiently synthesized and experimentally tested
in academic settings is limited. We have applied the principles of
computational protein design to optimization of nonpeptidic helix
mimics as ligands for protein complexes. We describe the development
of computational tools to design helix mimetics from canonical and
noncanonical residue libraries and their application to two therapeutically
important protein–protein interactions: p53-MDM2 and p300-HIF1α.
The overall study provides a streamlined approach for discovering
potent peptidomimetic inhibitors of protein–protein interactions.
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Affiliation(s)
- Brooke Bullock Lao
- Department of Chemistry and ‡Departments of Biology and Computer Science, New York University , New York, New York 10003, United States
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71
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Affiliation(s)
- Ngoc-Duc Doan
- Département de Chimie, Université de Montréal, C.P. 6128, Succursale Centre-Ville, Montréal, Québec Canada H3C 3J7
| | - Robert Hopewell
- Département de Chimie, Université de Montréal, C.P. 6128, Succursale Centre-Ville, Montréal, Québec Canada H3C 3J7
| | - William D. Lubell
- Département de Chimie, Université de Montréal, C.P. 6128, Succursale Centre-Ville, Montréal, Québec Canada H3C 3J7
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72
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da Silva MR, de Mattos MC, de Oliveira MDCF, de Lemos TLG, Ricardo NMPS, de Gonzalo G, Lavandera I, Gotor-Fernández V, Gotor V. Asymmetric chemoenzymatic synthesis of N-acetyl-α-amino esters based on lipase-catalyzed kinetic resolutions through interesterification reactions. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.02.012] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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73
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Gunawan S, Hulme C. Bifunctional building blocks in the Ugi-azide condensation reaction: a general strategy toward exploration of new molecular diversity. Org Biomol Chem 2014; 11:6036-46. [PMID: 23912086 DOI: 10.1039/c3ob40900g] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
1,5-Disubstituted tetrazoles are an important drug-like scaffold known for their ability to mimic the cis-amide bond conformation. The scaffold is readily accessible via substitution of the carboxylic acid component of the Ugi multi-component reaction (MCR) with TMSN3 in what is herein denoted the Ugi-azide reaction. This full paper presents a concise, novel, general strategy to access a plethora of new heterocylic scaffolds utilizing tethered aldo/keto-acids/esters in the Ugi-azide reaction followed by a ring closing event that generates novel highly complex bis-heterocyclic lactam-tetrazoles.
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Affiliation(s)
- Steven Gunawan
- BIO5 Oro Valley, The University of Arizona, 1580 E. Hanley Blvd., Oro Valley, AZ 85737, USA
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74
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Šenica L, Grošelj U, Kasunič M, Kočar D, Stanovnik B, Svete J. Synthesis of Enaminone-Based Vinylogous Peptides. European J Org Chem 2014. [DOI: 10.1002/ejoc.201402033] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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75
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Miyata O, Takeda N, Ueda M, Kajisa S, Matsuno K, Naito T. Preparation of Cyclic β-Amino Acid Derivatives with Quaternary Carbon Center via a Radical Addition-Cyclization Sequence. HETEROCYCLES 2014. [DOI: 10.3987/com-13-12881] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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76
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Deiber JA, Piaggio MV, Peirotti MB. Global chain properties of an alll-α-eicosapeptide with a secondary α-helix and its all retrod-inverso-α-eicosapeptide estimated through the modeling of their CZE-determined electrophoretic mobilities. Electrophoresis 2013; 35:755-61. [DOI: 10.1002/elps.201300395] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2013] [Revised: 09/26/2013] [Accepted: 10/11/2013] [Indexed: 11/06/2022]
Affiliation(s)
- Julio A. Deiber
- Instituto de Desarrollo Tecnológico para la Industria Química (INTEC); Universidad Nacional del Litoral (UNL); Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET); Santa Fe Argentina
| | - Maria V. Piaggio
- Cátedra de Bioquímica Básica de Macromoléculas; Facultad de Bioquímica y Ciencias Biológicas; UNL; Santa Fe Argentina
| | - Marta B. Peirotti
- Instituto de Desarrollo Tecnológico para la Industria Química (INTEC); Universidad Nacional del Litoral (UNL); Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET); Santa Fe Argentina
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77
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Balan B, Bahulayan D. Facile and Rapid Green Route for the Synthesis of Privileged Peptidotriazoles Based on Oxazolonic Acids by Click Fragment Assembly. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2013. [DOI: 10.1246/bcsj.20130106] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Biny Balan
- Department of Chemistry, University of Calicut
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78
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Synthesis and anti-TMV activity of dialkyl/dibenzyl 2-((6-substituted-benzo[d]thiazol-2-ylamino)(benzofuran-2-yl)methyl) malonates. Molecules 2013; 18:13623-35. [PMID: 24192914 PMCID: PMC6270053 DOI: 10.3390/molecules181113623] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2013] [Revised: 10/24/2013] [Accepted: 10/29/2013] [Indexed: 11/16/2022] Open
Abstract
Starting from benzofuran-2-methanal, 6-substituted benzothiazole-2-amines and malonic esters, sixteen title compounds were designed and synthesized seeking to introduce anti-TMV activity. The structures of the newly synthesized compounds were confirmed by 1H-NMR, 13C-NMR, IR spectra, and MS (HREI) analysis. The bioassays identified some of these new compounds as having moderate to good anti-TMV activity. The compounds 5i and 5m have good antiviral activity against TMV with a curative rate of 52.23% and 54.41%, respectively, at a concentration of 0.5 mg/mL.
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79
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Verardo G, Gorassini A. Characterization of N-Boc/Fmoc/Z-N'-formyl-gem-diaminoalkyl derivatives using electrospray ionization multi-stage mass spectrometry. JOURNAL OF MASS SPECTROMETRY : JMS 2013; 48:1136-1149. [PMID: 24259202 DOI: 10.1002/jms.3278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2013] [Revised: 08/23/2013] [Accepted: 08/27/2013] [Indexed: 06/02/2023]
Abstract
N-Boc/Fmoc/Z-N'-formyl-gem-diaminoalkyl derivatives, intermediates particularly useful in the synthesis of partially modified retro-inverso peptides, have been characterized by both positive and negative ion electrospray ionization (ESI) ion-trap multi-stage mass spectrometry (MS(n)). The MS(2) collision induced dissociation (CID) spectra of the sodium adduct of the formamides derived from the corresponding N-Fmoc/Z-amino acids, dipeptide and tripeptide acids show the [M + Na-NH2CHO](+) ion, arising from the loss of formamide, as the base peak. Differently, the MS(2) CID spectra of [M + Na](+) ion of all the N-Boc derivatives yield the abundant [M + Na-C4H8](+) and [M + Na-Boc + H](+) ions because of the loss of isobutylene and CO2 from the Boc protecting function. Useful information on the type of amino acids and their sequence in the N-protected dipeptidyl and tripeptidyl-N'-formamides is provided by MS(2) and subsequent MS(n) experiments on the respective precursor ions. The negative ion ESI mass spectra of these oligomers show, in addition to [M-H](-), [M + HCOO](-) and [M + Cl](-) ions, the presence of in-source CID fragment ions deriving from the involvement of the N-protecting group. Furthermore, MS(n) spectra of [M + Cl](-) ion of N-protected dipeptide and tripeptide derivatives show characteristic fragmentations that are useful for determining the nature of the C-terminal gem-diamino residue. The present paper represents an initial attempt to study the ESI-MS behavior of these important intermediates and lays the groundwork for structural-based studies on more complex partially modified retro-inverso peptides.
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Affiliation(s)
- Giancarlo Verardo
- Dipartimento di Chimica, Fisica e Ambiente, Università di Udine, Via del Cotonificio 108, I-33100, Udine, Italy
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80
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Clavette C, Vincent Rocan JF, Beauchemin AM. Diversity-Oriented Synthesis of Hydrazine-Derived Compounds from Amino Isocyanates Generated In Situ. Angew Chem Int Ed Engl 2013; 52:12705-8. [DOI: 10.1002/anie.201306379] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2013] [Indexed: 01/01/2023]
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81
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Clavette C, Vincent Rocan JF, Beauchemin AM. Diversity-Oriented Synthesis of Hydrazine-Derived Compounds from Amino Isocyanates Generated In Situ. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201306379] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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82
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83
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Ngo TH, Berndt H, Wilsdorf M, Lentz D, Reissig HU. Linear and cyclic hybrids of alternating thiophene-amino acid units: synthesis and effects of chirality on conformation and molecular packing. Chemistry 2013; 19:15155-65. [PMID: 24105938 DOI: 10.1002/chem.201302143] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2013] [Indexed: 12/21/2022]
Abstract
The dipeptide isostere 5-aminothiophene carboxylic acid has been combined with L-phenylalanine moieties to provide linear and cyclic hybrid oligopeptides. A suitable protecting group strategy and appropriate coupling methods have been developed to guarantee a high degree of enantiopurity of the resulting amides. Cyclic tetraamides have been efficiently obtained by macrocyclization of the linear derivatives. In the case of racemized cyclization precursors, two diastereomeric macrocycles (S,S/R,R and meso) have been isolated. Their crystal structures show clear effects of the stereogenic centers on the ring conformations and molecular packing.
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Affiliation(s)
- Thien H Ngo
- Institut für Chemie und Biochemie, Freie Universität Berlin, Takustrasse 3, 14195 Berlin (Germany), Fax: (+49) 30-838-55367 http://www.bcp.fu-berlin.de/chemie/oc/reissig
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84
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Kamlet AS, Préville C, Farley KA, Piotrowski DW. Regioselective hydroarylations and parallel kinetic resolution of Vince lactam. Angew Chem Int Ed Engl 2013; 52:10607-10. [PMID: 23956102 DOI: 10.1002/anie.201304818] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2013] [Indexed: 01/08/2023]
Abstract
Two regioselective and complementary hydroarylation reactions of an unsymmetrical cyclic olefin have been developed. The products can be transformed in one step into constrained γ-amino acids. Regioselective arylation of Vince lactam is controlled by the choice of phosphine ligand enantiomer and the substituent on the amide nitrogen atom. The method was extended to a general regiodivergent parallel kinetic resolution of the racemic lactam.
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Affiliation(s)
- Adam S Kamlet
- Worldwide Medicinal Chemistry, Pfizer Inc. Eastern Point Road, Groton, CT 06340 (USA).
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85
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Kamlet AS, Préville C, Farley KA, Piotrowski DW. Regioselective Hydroarylations and Parallel Kinetic Resolution of Vince Lactam. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201304818] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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86
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Hammoud H, Schmitt M, Blaise E, Bihel F, Bourguignon JJ. N-Heteroarylation of Chiral α-Aminoesters by Means of Palladium-Catalyzed Buchwald–Hartwig Reaction. J Org Chem 2013; 78:7930-7. [DOI: 10.1021/jo4011427] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Hassan Hammoud
- Laboratoire d’Innovation Thérapeutique,
UMR 7200, Faculté de Pharmacie, Université de Strasbourg, 74, route du Rhin, BP 60024, 67401 Illkirch,
France
| | - Martine Schmitt
- Laboratoire d’Innovation Thérapeutique,
UMR 7200, Faculté de Pharmacie, Université de Strasbourg, 74, route du Rhin, BP 60024, 67401 Illkirch,
France
| | - Emilie Blaise
- Laboratoire d’Innovation Thérapeutique,
UMR 7200, Faculté de Pharmacie, Université de Strasbourg, 74, route du Rhin, BP 60024, 67401 Illkirch,
France
| | - Frédéric Bihel
- Laboratoire d’Innovation Thérapeutique,
UMR 7200, Faculté de Pharmacie, Université de Strasbourg, 74, route du Rhin, BP 60024, 67401 Illkirch,
France
| | - Jean-Jacques Bourguignon
- Laboratoire d’Innovation Thérapeutique,
UMR 7200, Faculté de Pharmacie, Université de Strasbourg, 74, route du Rhin, BP 60024, 67401 Illkirch,
France
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87
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Huang G, Yin Z, Zhang X. Construction of Optically Active Quaternary Propargyl Amines by Highly Enantioselective Zinc/BINOL-Catalyzed Alkynylation of Ketoimines. Chemistry 2013; 19:11992-8. [DOI: 10.1002/chem.201301479] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2013] [Indexed: 11/10/2022]
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88
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Weber M, Frey W, Peters R. Catalytic Asymmetric Synthesis of Spirocyclic Azlactones by a Double Michael-Addition Approach. Chemistry 2013; 19:8342-51. [DOI: 10.1002/chem.201300224] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2013] [Indexed: 12/12/2022]
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89
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Cordaro M, Risitano F, Scala A, Rescifina A, Chiacchio U, Grassi G. Self-catalyzed Mannich-type reaction of enolizable cyclic 1,3-dicarbonyls to acyclic nitrones: an entry to functionalized β-enamino diones. J Org Chem 2013; 78:3972-9. [PMID: 23506161 DOI: 10.1021/jo400331b] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
A new method for the preparation of highly functionalized β-enamino diones has been developed. The protocol involves an initial self-catalyzed Mannich-type reaction of enolizable cyclic 1,3-dicarbonyls to nitrones, followed by a spontaneous intramolecular reorganization of the resulting nonisolated hydroxylamine to enamino derivatives. These compounds retain the features of unnatural α-amino acids. The ease of preparation makes them attractive intermediates for the synthesis of peptidomimetics, polyheterocycles, and other multifunctional compounds. All experimental results have been efficiently rationalized by in silico studies at the M06-2X level of theory, and a valid mechanistic pathway has been proposed.
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Affiliation(s)
- Massimiliano Cordaro
- Dipartimento di Scienze Chimiche, Università di Messina, V. le F. Stagno d'Alcontres 31, Messina 98166, Italy
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90
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Divya PS, Jain K, Sobhia ME. From peptides to peptidomimetics: rational design of potential PKC-β II inhibitors. Med Chem Res 2013. [DOI: 10.1007/s00044-012-0056-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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91
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92
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Aizpurua JM, Palomo C, Balentová E, Jimenez A, Andreieff E, Sagartzazu-Aizpurua M, Miranda JI, Linden A. Chirality-Driven Folding of Short β-Lactam Pseudopeptides. J Org Chem 2012; 78:224-37. [DOI: 10.1021/jo302368y] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Jesus M. Aizpurua
- Departamento
de Química
Orgánica-I, Facultad de Química, Universidad del País Vasco UPV/EHU, Paseo Manuel Lardizabal-3,
20018 San Sebastian, Spain
| | - Claudio Palomo
- Departamento de Química Orgánica-I, Joxe Mari Korta R&D Center, Universidad del País Vasco UPV/EHU, Avda Tolosa-72, 20018 San Sebastian, Spain
| | - Eva Balentová
- Departamento
de Química
Orgánica-I, Facultad de Química, Universidad del País Vasco UPV/EHU, Paseo Manuel Lardizabal-3,
20018 San Sebastian, Spain
| | - Azucena Jimenez
- Departamento
de Química
Orgánica-I, Facultad de Química, Universidad del País Vasco UPV/EHU, Paseo Manuel Lardizabal-3,
20018 San Sebastian, Spain
| | - Elena Andreieff
- Departamento
de Química
Orgánica-I, Facultad de Química, Universidad del País Vasco UPV/EHU, Paseo Manuel Lardizabal-3,
20018 San Sebastian, Spain
| | - Maialen Sagartzazu-Aizpurua
- Departamento
de Química
Orgánica-I, Facultad de Química, Universidad del País Vasco UPV/EHU, Paseo Manuel Lardizabal-3,
20018 San Sebastian, Spain
| | - José Ignacio Miranda
- Departamento
de Química
Orgánica-I, Facultad de Química, Universidad del País Vasco UPV/EHU, Paseo Manuel Lardizabal-3,
20018 San Sebastian, Spain
| | - Anthony Linden
- Institute of Organic Chemistry, University of Zürich, Winterthurerstrasse 190,
CH-8057 Zürich, Switzerland
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93
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In silico design of peptidomimetics for PKC-β II inhibition: perspectives for diabetic cardiomyopathy therapy. Med Chem Res 2012. [DOI: 10.1007/s00044-012-0378-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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94
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Weber M, Peters R. Pd(II)-Catalyzed Regio-, Enantio-, and Diastereoselective 1,4-Addition of Azlactones Formed in Situ From Racemic Unprotected Amino Acids and Acetic Anhydride. J Org Chem 2012. [DOI: 10.1021/jo302177t] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Manuel Weber
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569
Stuttgart, Germany
| | - René Peters
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569
Stuttgart, Germany
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95
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Chatterjee J, Rechenmacher F, Kessler H. N-methylation of peptides and proteins: an important element for modulating biological functions. Angew Chem Int Ed Engl 2012; 52:254-69. [PMID: 23161799 DOI: 10.1002/anie.201205674] [Citation(s) in RCA: 350] [Impact Index Per Article: 29.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2012] [Indexed: 11/06/2022]
Abstract
N-Methylation is one of the simplest chemical modifications often occurring in peptides and proteins of prokaryotes and higher eukaryotes. Over years of evolution, nature has employed N-methylation of peptides as an ingenious technique to modulate biological function, often as a mode of survival through the production of antibiotics. This small structural change can not only mobilize large protein complexes (as in the histone methylation), but also inhibits the action of enzymes by selective recognition of protein-protein interaction surfaces. In recent years through the advancement in synthetic approaches, the potential of N-methylation has begun to be revealed, not only in modulating biological activity and selectivity as well as pharmacokinetic properties of peptides, but also in delivering novel drugs. Herein, we summarize the current knowledge of the versatility of N-methylation in modulating biological, structural, and pharmacokinetic properties of peptides.
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Affiliation(s)
- Jayanta Chatterjee
- Genome biology unit, European Molecular Biology Laboratory, Heidelberg, Germany
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96
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Cardenal C, Vollrath SBL, Schepers U, Bräse S. Synthesis of Functionalized Glutamine- and Asparagine-Type Peptoids - Scope and Limitations. Helv Chim Acta 2012. [DOI: 10.1002/hlca.201200451] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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97
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Chatterjee J, Rechenmacher F, Kessler H. N-Methylierung von Peptiden und Proteinen: ein wichtiges Element für die Regulation biologischer Funktionen. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201205674] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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98
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Weber M, Jautze S, Frey W, Peters R. Bispalladacycle-Catalyzed Michael Addition of In Situ Formed Azlactones to Enones. Chemistry 2012; 18:14792-804. [DOI: 10.1002/chem.201202455] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2012] [Indexed: 01/05/2023]
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99
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Diastereoselective synthesis of 5-iminooxazolines and their subsequent transformation to α,α-disubstituted dipeptide esters: a formal [4+1] cycloaddition reaction of cyclohexyl isocyanide and Z-alkyl-α-benzoyl amino-acrylates. Tetrahedron 2012. [DOI: 10.1016/j.tet.2012.06.073] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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100
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Stock C, Brückner R. Mild and High-Yielding Molybdenum(VI) Dichloride Dioxide-Catalyzed Formation of Mono-, Di-, Tri-, and Tetracarbamates from Alcohols and Aromatic or Aliphatic Isocyanates. Adv Synth Catal 2012. [DOI: 10.1002/adsc.201200303] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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