1
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Cayrou C, Walrant A, Ravault D, Guitot K, Noinville S, Sagan S, Brigaud T, Gonzalez S, Ongeri S, Chaume G. Incorporation of CF 3-pseudoprolines into polyproline type II foldamers confers promising biophysical features. Chem Commun (Camb) 2024; 60:8609-8612. [PMID: 39046095 DOI: 10.1039/d4cc02895c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/25/2024]
Abstract
The development and the use of fluorinated polyproline-type II (PPII) foldamers are still underexplored. Herein, trifluoromethyl pseudoprolines have been incorporated into polyproline backbones without affecting their PPII helicity. The ability of the trifluoromethyl groups to increase hydrophobicity and to act as 19F NMR probes is demonstrated. Moreover, the enzymatic stability and the non-cytotoxicity of these fluorinated foldamers make them valuable templates for use in medicinal chemistry.
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Affiliation(s)
- Chloé Cayrou
- CY Cergy Paris Université, CNRS, BioCIS UMR 8076, 95000 Cergy Pontoise, France.
- Université Paris-Saclay, CNRS, BioCIS UMR 8076, 91400 Orsay, France
| | - Astrid Walrant
- Laboratoire des Biomolécules, Sorbonne Université, École Normale Supérieure, PSL University, CNRS, LBM, 75005 Paris, France
| | - Delphine Ravault
- Laboratoire des Biomolécules, Sorbonne Université, École Normale Supérieure, PSL University, CNRS, LBM, 75005 Paris, France
| | - Karine Guitot
- CY Cergy Paris Université, CNRS, BioCIS UMR 8076, 95000 Cergy Pontoise, France.
- Université Paris-Saclay, CNRS, BioCIS UMR 8076, 91400 Orsay, France
| | - Sylvie Noinville
- Laboratoire des Biomolécules, Sorbonne Université, École Normale Supérieure, PSL University, CNRS, LBM, 75005 Paris, France
| | - Sandrine Sagan
- Laboratoire des Biomolécules, Sorbonne Université, École Normale Supérieure, PSL University, CNRS, LBM, 75005 Paris, France
| | - Thierry Brigaud
- CY Cergy Paris Université, CNRS, BioCIS UMR 8076, 95000 Cergy Pontoise, France.
- Université Paris-Saclay, CNRS, BioCIS UMR 8076, 91400 Orsay, France
| | - Simon Gonzalez
- CY Cergy Paris Université, CNRS, BioCIS UMR 8076, 95000 Cergy Pontoise, France.
- Université Paris-Saclay, CNRS, BioCIS UMR 8076, 91400 Orsay, France
| | - Sandrine Ongeri
- Université Paris-Saclay, CNRS, BioCIS UMR 8076, 91400 Orsay, France
| | - Grégory Chaume
- CY Cergy Paris Université, CNRS, BioCIS UMR 8076, 95000 Cergy Pontoise, France.
- Université Paris-Saclay, CNRS, BioCIS UMR 8076, 91400 Orsay, France
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2
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Laxio Arenas J, Lesma J, Ha-Duong T, Ranjan Sahoo B, Ramamoorthy A, Tonali N, Soulier JL, Halgand F, Giraud F, Crousse B, Kaffy J, Ongeri S. Composition and Conformation of Hetero- versus Homo-Fluorinated Triazolamers Influence their Activity on Islet Amyloid Polypeptide Aggregation. Chemistry 2024; 30:e202303887. [PMID: 38478740 DOI: 10.1002/chem.202303887] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Indexed: 04/11/2024]
Abstract
Novel fluorinated foldamers based on aminomethyl-1,4-triazolyl-difluoroacetic acid (1,4-Tz-CF2) units were synthesized and their conformational behaviour was studied by NMR and molecular dynamics. Their activity on the aggregation of the human islet amyloid polypeptide (hIAPP) amyloid protein was evaluated by fluorescence spectroscopy and mass spectrometry. The fluorine labelling of these foldamers allowed the analysis of their interaction with the target protein. We demonstrated that the preferred extended conformation of homotriazolamers of 1,4-Tz-CF2 unit increases the aggregation of hIAPP, while the hairpin-like conformation of more flexible heterotriazolamers containing two 1,4-Tz-CF2 units mixed with natural amino acids from the hIAPP sequence reduces it, and more efficiently than the parent natural peptide. The longer heterotriazolamers having three 1,4-Tz-CF2 units adopting more folded hairpin-like and ladder-like structures similar to short multi-stranded β-sheets have no effect. This work demonstrates that a good balance between the structuring and flexibility of these foldamers is necessary to allow efficient interaction with the target protein.
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Affiliation(s)
- José Laxio Arenas
- Université Paris-Saclay, CNRS, BioCIS, Bat. Henri Moissan, 17 av. des Sciences, 91400, Orsay, France
| | - Jacopo Lesma
- Université Paris-Saclay, CNRS, BioCIS, Bat. Henri Moissan, 17 av. des Sciences, 91400, Orsay, France
| | - Tap Ha-Duong
- Université Paris-Saclay, CNRS, BioCIS, Bat. Henri Moissan, 17 av. des Sciences, 91400, Orsay, France
| | - Bikash Ranjan Sahoo
- Biophysics, Department of Chemistry, Biomedical Engineering, Michigan Neuroscience Institute, Macromolecular Science and Engineering, University of Michigan, Ann Arbor, MI 48109-1055, USA
| | - Ayyalusamy Ramamoorthy
- Biophysics, Department of Chemistry, Biomedical Engineering, Michigan Neuroscience Institute, Macromolecular Science and Engineering, University of Michigan, Ann Arbor, MI 48109-1055, USA
| | - Nicolo Tonali
- Université Paris-Saclay, CNRS, BioCIS, Bat. Henri Moissan, 17 av. des Sciences, 91400, Orsay, France
| | - Jean-Louis Soulier
- Université Paris-Saclay, CNRS, BioCIS, Bat. Henri Moissan, 17 av. des Sciences, 91400, Orsay, France
| | - Frédéric Halgand
- Université Paris-Saclay, CNRS, Institut de Chimie Physique, 91405, Orsay, France
| | - François Giraud
- Equipe Biologie et Chimie Structurales, Dept Chimie et Biologie Structurales et Analytiques, ICSN, CNRS, Université Paris Saclay, 1 avenue de la terrasse, 91190, Gif sur Yvette, France
| | - Benoît Crousse
- Université Paris-Saclay, CNRS, BioCIS, Bat. Henri Moissan, 17 av. des Sciences, 91400, Orsay, France
| | - Julia Kaffy
- Université Paris-Saclay, CNRS, BioCIS, Bat. Henri Moissan, 17 av. des Sciences, 91400, Orsay, France
| | - Sandrine Ongeri
- Université Paris-Saclay, CNRS, BioCIS, Bat. Henri Moissan, 17 av. des Sciences, 91400, Orsay, France
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3
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Patel K, Karmakar S, Tothadi S, Reddy JP, Prabhakaran P. "Fluorine Effects" in Conformational Orchestration of α/β Hybrid Peptide with a 9-membered Pseudo β-Turn Motif. Chemistry 2024; 30:e202303757. [PMID: 38165894 DOI: 10.1002/chem.202303757] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2023] [Revised: 12/27/2023] [Accepted: 12/28/2023] [Indexed: 01/04/2024]
Abstract
Fluorine, the tiny robust atom, with its unique features has captured the attention of scientists in recent times, especially in drug discovery with its integration in small molecules, peptides, and proteins. However, studies to understand the 'fluorine effects' on the conformation of molecules that follow 'beyond the rule of 5' are in the infancy yet significant in molecular design and function. For the first time, using short hybrid peptide sequence as an appropriate model, we examined the substitution effect (size, stereoelectronic effect, and hydrogen bonding) using X-ray diffraction, 2D-NMR, and CD studies. The comparative study on their folding patterns with hydrogen-substituted analogs can provide valuable insights into fluorinated substrates' design.
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Affiliation(s)
- Karma Patel
- School of Chemical Sciences, Central University of Gujarat, Gandhinagar, India-, 382030
| | - Sintu Karmakar
- School of Chemical Sciences, Central University of Gujarat, Gandhinagar, India-, 382030
| | - Srinu Tothadi
- Analytical and Environmental Sciences Division and Centralized Instrument Facility (AESD&CIF), CSIR-Central Salt & Marine Chemicals Research Institute (CSMCRI), Bhavnagar, India-, 364002
| | - J Prakasha Reddy
- School of Applied Material Sciences, Central University of Gujarat, Gandhinagar, India-, 382030
| | - Panchami Prabhakaran
- School of Chemical Sciences, Central University of Gujarat, Gandhinagar, India-, 382030
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4
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Patel AR, Lawer A, Bhadbhade M, Hunter L. The influence of backbone fluorination on the helicity of α/γ-hybrid peptides. Org Biomol Chem 2024; 22:1608-1612. [PMID: 38305470 DOI: 10.1039/d3ob02016a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2024]
Abstract
Peptides that are composed of an alternating pattern of α- and γ-amino acids are potentially valuable as metabolism-resistant bioactive agents. For optimal function, some kind of conformational restriction is usually required to either stabilize the dominant 12-helix, or else to divert the peptide away from this conformation in a controlled way. Herein, we explore stereoselective fluorination as a method for controlling the conformations of α/γ-hybrid peptides. We show through a combination of X-ray, NMR and CD analyses that fluorination can either stabilize or disrupt the 12-helix, depending on the fluorine stereochemistry. These findings could inform the ongoing development of diverse functional hybrid peptides.
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Affiliation(s)
| | - Aggie Lawer
- School of Chemistry, University of New South Wales (UNSW), Sydney, Australia.
| | - Mohan Bhadbhade
- Mark Wainwright Analytical Centre, University of New South Wales (UNSW), Sydney, Australia
| | - Luke Hunter
- School of Chemistry, University of New South Wales (UNSW), Sydney, Australia.
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5
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Lin Q, Lan H, Ma C, Stendall RT, Shankland K, Musgrave RA, Horton PN, Baldauf C, Hofmann H, Butts CP, Müller MM, Cobb AJA. Crystal Structure and NMR of an α,δ-Peptide Foldamer Helix Shows Side-Chains are Well Placed for Bifunctional Catalysis: Application as a Minimalist Aldolase Mimic. ANGEWANDTE CHEMIE (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 135:e202305326. [PMID: 38516402 PMCID: PMC10952562 DOI: 10.1002/ange.202305326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/15/2023] [Indexed: 03/23/2024]
Abstract
We report the first NMR and X-ray diffraction (XRD) structures of an unusual 13/11-helix (alternating i, i+1 {NH-O=C} and i, i+3 {C=O-H-N} H-bonds) formed by a heteromeric 1 : 1 sequence of α- and δ-amino acids, and demonstrate the application of this framework towards catalysis. Whilst intramolecular hydrogen bonds (IMHBs) are the clear driver of helix formation in this system, we also observe an apolar interaction between the ethyl residue of one δ-amino acid and the cyclohexyl group of the next δ-residue in the sequence that seems to stabilize one type of helix over another. To the best of our knowledge this type of additional stabilization leading to a specific helical preference has not been observed before. Critically, the helix type realized places the α-residue functionalities in positions proximal enough to engage in bifunctional catalysis as demonstrated in the application of our system as a minimalist aldolase mimic.
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Affiliation(s)
- Qi Lin
- Department of ChemistryKing's College London7 Trinity StreetLondonSE1 1DBUK
| | - Hao Lan
- School of ChemistryUniversity of BristolCantocks CloseBristolBS8 1TSUK
| | - Chunmiao Ma
- School of Chemistry and Chemical EngineeringHuazhong University of Science and TechnologyWuhan430074P. R. China
| | - Ryan T. Stendall
- Department of ChemistryKing's College London7 Trinity StreetLondonSE1 1DBUK
| | - Kenneth Shankland
- School of ChemistryFood and Pharmacy (SCFP)University of ReadingWhiteknights BerksReadingRG6 6ADUK
| | | | - Peter N. Horton
- EPSRC National Crystallography ServiceSchool of ChemistryUniversity of Southampton HighfieldSouthamptonSO17 1BJUK
| | - Carsten Baldauf
- Fritz-Haber-Institut der Max-Planck-GesellschaftFaradayweg 4–614195BerlinGermany
| | - Hans‐Jörg Hofmann
- Institut für BiochemieUniversität LeipzigBrüderstrasse 3404103LeipzigGermany
| | - Craig P. Butts
- School of ChemistryUniversity of BristolCantocks CloseBristolBS8 1TSUK
| | - Manuel M. Müller
- Department of ChemistryKing's College London7 Trinity StreetLondonSE1 1DBUK
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6
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Lin Q, Lan H, Ma C, Stendall RT, Shankland K, Musgrave RA, Horton PN, Baldauf C, Hofmann H, Butts CP, Müller MM, Cobb AJA. Crystal Structure and NMR of an α,δ-Peptide Foldamer Helix Shows Side-Chains are Well Placed for Bifunctional Catalysis: Application as a Minimalist Aldolase Mimic. Angew Chem Int Ed Engl 2023; 62:e202305326. [PMID: 37218617 PMCID: PMC10952276 DOI: 10.1002/anie.202305326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2023] [Revised: 05/17/2023] [Accepted: 05/22/2023] [Indexed: 05/24/2023]
Abstract
We report the first NMR and X-ray diffraction (XRD) structures of an unusual 13/11-helix (alternating i, i+1 {NH-O=C} and i, i+3 {C=O-H-N} H-bonds) formed by a heteromeric 1 : 1 sequence of α- and δ-amino acids, and demonstrate the application of this framework towards catalysis. Whilst intramolecular hydrogen bonds (IMHBs) are the clear driver of helix formation in this system, we also observe an apolar interaction between the ethyl residue of one δ-amino acid and the cyclohexyl group of the next δ-residue in the sequence that seems to stabilize one type of helix over another. To the best of our knowledge this type of additional stabilization leading to a specific helical preference has not been observed before. Critically, the helix type realized places the α-residue functionalities in positions proximal enough to engage in bifunctional catalysis as demonstrated in the application of our system as a minimalist aldolase mimic.
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Affiliation(s)
- Qi Lin
- Department of ChemistryKing's College London7 Trinity StreetLondonSE1 1DBUK
| | - Hao Lan
- School of ChemistryUniversity of BristolCantocks CloseBristolBS8 1TSUK
| | - Chunmiao Ma
- School of Chemistry and Chemical EngineeringHuazhong University of Science and TechnologyWuhan430074P. R. China
| | - Ryan T. Stendall
- Department of ChemistryKing's College London7 Trinity StreetLondonSE1 1DBUK
| | - Kenneth Shankland
- School of ChemistryFood and Pharmacy (SCFP)University of ReadingWhiteknights BerksReadingRG6 6ADUK
| | | | - Peter N. Horton
- EPSRC National Crystallography ServiceSchool of ChemistryUniversity of Southampton HighfieldSouthamptonSO17 1BJUK
| | - Carsten Baldauf
- Fritz-Haber-Institut der Max-Planck-GesellschaftFaradayweg 4–614195BerlinGermany
| | - Hans‐Jörg Hofmann
- Institut für BiochemieUniversität LeipzigBrüderstrasse 3404103LeipzigGermany
| | - Craig P. Butts
- School of ChemistryUniversity of BristolCantocks CloseBristolBS8 1TSUK
| | - Manuel M. Müller
- Department of ChemistryKing's College London7 Trinity StreetLondonSE1 1DBUK
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7
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Bodero L, Guitot K, Lensen N, Lequin O, Brigaud T, Ongeri S, Chaume G. Introducing the Chiral Constrained α-Trifluoromethylalanine in Aib foldamers to Control, Quantify and Assign the Helical Screw-Sense. Chemistry 2021; 28:e202103887. [PMID: 34890083 DOI: 10.1002/chem.202103887] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Indexed: 11/11/2022]
Abstract
Oligomers of α-aminoisobutyric acid (Aib) are achiral peptides that adopt 3 10 helical structures with equal population of left- and right-handed conformers. Yet, the screw-sense preference of the helical chain may be controlled by a single chiral residue located at one terminus. 1 H and 19 F NMR, X-ray crystallography and circular dichroism studies on new Aib oligomers show that the incorporation of a chiral quaternary α-trifluoromethylalanine at their N -terminus induces a reversal of the screw-sense preference of the 3 10 -helix compared to that of a non-fluorinated analogue having an l-α-methyl valine residue. This work demonstrates that, among the many particular properties of introducing a trifluoromethyl group into foldamers, its stereo-electronic properties are of major interest to control the helical screw sense. Its use as an easy-to-handle 19 F NMR probe to reliably determine both the magnitude of the screw-sense preference and its sign assignment is also of remarkable interest.
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Affiliation(s)
| | | | | | - Olivier Lequin
- Sorbonne Université Campus Pierre et Marie Curie: Sorbonne Universite Campus Pierre et Marie Curie, chemistry, FRANCE
| | | | | | - Grégory Chaume
- CY Cergy Paris Universite, Chemistry, 5 mail Gay Lussac, 95000, Cergy-Pontoise, FRANCE
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8
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Kirinda VC, Vemuri GN, Kress NG, Flynn KM, Kumarage ND, Schrage BR, Tierney DL, Ziegler CJ, Hartley CS. Fluorine Labeling of ortho-Phenylenes to Facilitate Conformational Analysis. J Org Chem 2021; 86:15085-15095. [PMID: 34641678 DOI: 10.1021/acs.joc.1c01770] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
1H NMR spectroscopy is a powerful tool for the conformational analysis of ortho-phenylene foldamers in solution. However, as o-phenylenes are integrated into ever more complex systems, we are reaching the limits of what can be analyzed by 1H- and 13C-based NMR techniques. Here, we explore fluorine labeling of o-phenylene oligomers for analysis by 19F NMR spectroscopy. Two series of fluorinated oligomers have been synthesized. Optimization of monomers for Suzuki coupling enables an efficient stepwise oligomer synthesis. The oligomers all adopt well-folded geometries in solution, as determined by 1H NMR spectroscopy and X-ray crystallography. 19F NMR experiments complement these methods well. The resolved singlets of one-dimensional 19F{1H} spectra are very useful for determining relative conformer populations. The additional information from two-dimensional 19F NMR spectra is also clearly valuable when making 1H assignments. The comparison of 19F isotropic shielding predictions to experimental chemical shifts is not, however, currently sufficient by itself to establish o-phenylene geometries.
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Affiliation(s)
- Viraj C Kirinda
- Department of Chemistry & Biochemistry, Miami University, Oxford, Ohio 45056, United States
| | - Gopi Nath Vemuri
- Department of Chemistry & Biochemistry, Miami University, Oxford, Ohio 45056, United States
| | - Nicholas G Kress
- Department of Chemistry & Biochemistry, Miami University, Oxford, Ohio 45056, United States
| | - Kaitlyn M Flynn
- Department of Chemistry & Biochemistry, Miami University, Oxford, Ohio 45056, United States
| | | | - Briana R Schrage
- Department of Chemistry, University of Akron, Akron, Ohio 44325, United States
| | - David L Tierney
- Department of Chemistry & Biochemistry, Miami University, Oxford, Ohio 45056, United States
| | | | - C Scott Hartley
- Department of Chemistry & Biochemistry, Miami University, Oxford, Ohio 45056, United States
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9
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Mondal R, Agbaria M, Nairoukh Z. Fluorinated Rings: Conformation and Application. Chemistry 2021; 27:7193-7213. [PMID: 33512034 DOI: 10.1002/chem.202005425] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Indexed: 12/16/2022]
Abstract
The introduction of fluorine atoms into molecules and materials across many fields of academic and industrial research is now commonplace, owing to their unique properties. A particularly interesting feature is the impact of fluorine substitution on the relative orientation of a C-F bond when incorporated into organic molecules. In this Review, we will be discussing the conformational behavior of fluorinated aliphatic carbo- and heterocyclic systems. The conformational preference of each system is associated with various interactions introduced by fluorine substitution such as charge-dipole, dipole-dipole, and hyperconjugative interactions. The contribution of each interaction on the stabilization of the fluorinated alicyclic system, which manifests itself in low conformations, will be discussed in detail. The novelty of this feature will be demonstrated by presenting the most recent applications.
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Affiliation(s)
- Rajarshi Mondal
- Institute of Chemistry, The Hebrew University of Jerusalem, Edmond J. Safra Campus, Jerusalem, 9190401, Israel
| | - Mohamed Agbaria
- Institute of Chemistry, The Hebrew University of Jerusalem, Edmond J. Safra Campus, Jerusalem, 9190401, Israel
| | - Zackaria Nairoukh
- Institute of Chemistry, The Hebrew University of Jerusalem, Edmond J. Safra Campus, Jerusalem, 9190401, Israel
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10
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Lawer A, Hunter L. Controlling γ‐Peptide Helicity with Stereoselective Fluorination. European J Org Chem 2021. [DOI: 10.1002/ejoc.202001619] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Aggie Lawer
- School of Chemistry The University of New South Wales (UNSW) Sydney 2052 Australia
| | - Luke Hunter
- School of Chemistry The University of New South Wales (UNSW) Sydney 2052 Australia
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11
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Laxio Arenas J, Xu Y, Milcent T, Van Heijenoort C, Giraud F, Ha-Duong T, Crousse B, Ongeri S. Fluorinated Triazole Foldamers: Folded or Extended Conformational Preferences. Chempluschem 2021; 86:241-251. [PMID: 33555641 DOI: 10.1002/cplu.202000791] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Revised: 01/27/2021] [Indexed: 12/16/2022]
Abstract
The Ministère de l'Enseignement Supérieur et de la Recherche (MESR) is thanked for financial support for José Laxio Arenas. The China Scholarship Council is thanked for financial support for Yaochun Xu. The authors thank Pr. Vadim Soloshonok and TOSOH F-TECH, Inc. for the kind gift of N-terbutyl-sulfinylimine.
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Affiliation(s)
- José Laxio Arenas
- BioCIS, CNRS, Université Paris Saclay, 5 rue Jean-baptiste Clément, 92296, Châtenay-Malabry Cedex, France
| | - Yaochun Xu
- BioCIS, CNRS, Université Paris Saclay, 5 rue Jean-baptiste Clément, 92296, Châtenay-Malabry Cedex, France
| | - Thierry Milcent
- BioCIS, CNRS, Université Paris Saclay, 5 rue Jean-baptiste Clément, 92296, Châtenay-Malabry Cedex, France
| | - Carine Van Heijenoort
- Equipe Biologie et Chimie Structurales, Dept Chimie et Biologie Structurales et Analytiques, ICSN, CNRS, Université Paris Saclay, 1 avenue de la terrasse, 91190, Gif sur Yvette, France
| | - François Giraud
- Equipe Biologie et Chimie Structurales, Dept Chimie et Biologie Structurales et Analytiques, ICSN, CNRS, Université Paris Saclay, 1 avenue de la terrasse, 91190, Gif sur Yvette, France
| | - Tap Ha-Duong
- BioCIS, CNRS, Université Paris Saclay, 5 rue Jean-baptiste Clément, 92296, Châtenay-Malabry Cedex, France
| | - Benoit Crousse
- BioCIS, CNRS, Université Paris Saclay, 5 rue Jean-baptiste Clément, 92296, Châtenay-Malabry Cedex, France
| | - Sandrine Ongeri
- BioCIS, CNRS, Université Paris Saclay, 5 rue Jean-baptiste Clément, 92296, Châtenay-Malabry Cedex, France
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12
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Feskov IO, Golub BO, Vashchenko BV, Levterov VV, Kondratov IS, Grygorenko OO, Haufe G. GABA Analogues and Related Mono-/Bifunctional Building Blocks Derived from the Fluorocyclobutane Scaffold. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000733] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Illia O. Feskov
- Enamine Ltd.; Chervonotkatska Street 78 02094 Kyiv Ukraine
- V.P. Kukhar Institute of Bioorganic Chemistry & Petrochemistry; NAS of Ukraine; Murmanska Street 1 02660 Kyiv Ukraine
| | | | - Bohdan V. Vashchenko
- Enamine Ltd.; Chervonotkatska Street 78 02094 Kyiv Ukraine
- Taras Shevchenko National University of Kyiv; Volodymyrska Street 60 01601 Kyiv Ukraine
| | | | - Ivan S. Kondratov
- Enamine Ltd.; Chervonotkatska Street 78 02094 Kyiv Ukraine
- Taras Shevchenko National University of Kyiv; Volodymyrska Street 60 01601 Kyiv Ukraine
| | - Oleksandr O. Grygorenko
- Enamine Ltd.; Chervonotkatska Street 78 02094 Kyiv Ukraine
- Taras Shevchenko National University of Kyiv; Volodymyrska Street 60 01601 Kyiv Ukraine
| | - Günter Haufe
- Organisch-Chemisches Institut; Westfälische Wilhelms-Universität Münster; Corrensstraße 40 48149 Münster Germany
- Cells-in-Motion Cluster of Excellence; Westfälische Wilhelms-Universität Münster; Waldeyerstraße 15 48149 Münster Germany
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13
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Imani Z, Guillot R, Declerck V, Aitken DJ. Local versus Global Control of Helical Folding in β-Peptide Segments Using Hydrazino Turns. J Org Chem 2020; 85:6165-6171. [PMID: 32233505 DOI: 10.1021/acs.joc.0c00305] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Rational control of the self-organization of β-peptides sequences to adopt regular secondary structures is an important challenge in peptidomimetic foldamer science. By replacing the N- and C-terminal residues of homooligomers of trans-2-aminocyclobutanecarboxylic acid (tACBC)n with N-aminoazetidine-2-carboxylic acid, an 8-helical topology is shown to dominate for sequences up to n = 7. This constitutes an atomic-level tool to override locally the preferred global 12-helix secondary structure of the corresponding tACBC homooligomers of the same length.
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Affiliation(s)
- Zeynab Imani
- Université Paris-Saclay, CNRS, ICMMO, 91405 Orsay, France
| | - Régis Guillot
- Université Paris-Saclay, CNRS, ICMMO, 91405 Orsay, France
| | | | - David J Aitken
- Université Paris-Saclay, CNRS, ICMMO, 91405 Orsay, France
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14
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Declerck V, Pérez‐Mellor A, Guillot R, Aitken DJ, Mons M, Zehnacker A. Vibrational circular dichroism as a probe of solid‐state organisation of derivatives of cyclic β‐amino acids:
Cis
‐ and
trans
‐2‐aminocyclobutane‐1‐carboxylic acid. Chirality 2019; 31:547-560. [DOI: 10.1002/chir.23083] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Revised: 05/14/2019] [Accepted: 05/15/2019] [Indexed: 12/20/2022]
Affiliation(s)
- Valérie Declerck
- CP3A Organic Synthesis Group and Services Communs, ICMMO, UMR 8182Université Paris Sud, Université Paris‐Saclay Orsay France
| | - Ariel Pérez‐Mellor
- Institut des Sciences Moléculaires d'Orsay (ISMO), CNRS, Univ. Paris‐SudUniversité Paris‐Saclay Orsay France
| | - Régis Guillot
- CP3A Organic Synthesis Group and Services Communs, ICMMO, UMR 8182Université Paris Sud, Université Paris‐Saclay Orsay France
| | - David J. Aitken
- CP3A Organic Synthesis Group and Services Communs, ICMMO, UMR 8182Université Paris Sud, Université Paris‐Saclay Orsay France
| | - Michel Mons
- Laboratoire Interactions Dynamiques et Lasers (LIDYL)Université Paris Saclay Paris France
| | - Anne Zehnacker
- Institut des Sciences Moléculaires d'Orsay (ISMO), CNRS, Univ. Paris‐SudUniversité Paris‐Saclay Orsay France
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15
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Ghisu L, Melis N, Serusi L, Luridiana A, Soddu F, Secci F, Caboni P, Guillot R, Aitken DJ, Frongia A. Synthesis of β-sulfinyl cyclobutane carboxylic amides via a formal α to β sulphoxide migration process. Org Biomol Chem 2019; 17:6143-6147. [PMID: 31180093 DOI: 10.1039/c9ob00758j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
An original tandem reaction consisting of a thermal elimination-addition process was developed. Highly substituted β-sulfinyl cyclobutane carboxylic acid derivatives were obtained from isomeric α-sulfinyl derivatives in a single operation in good to high yields and with high trans diastereoselectivity.
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Affiliation(s)
- Lorenza Ghisu
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, Complesso Universitario di Monserrato, S.S. 554, Bivio per Sestu, I-09042, Monserrato, Cagliari, Italy.
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16
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Declerck V, Aitken DJ. Strategic C to N Replacement in β-Peptides: Atomic Level Control of Helical Folding. J Org Chem 2018; 83:8793-8800. [DOI: 10.1021/acs.joc.8b01096] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Valérie Declerck
- CP3A Organic Synthesis Group, ICMMO, UMR 8182, CNRS, Université Paris Sud, Université Paris−Saclay, Bât 420, 15 rue Georges Clemenceau, 91405 Orsay Cedex, France
| | - David J. Aitken
- CP3A Organic Synthesis Group, ICMMO, UMR 8182, CNRS, Université Paris Sud, Université Paris−Saclay, Bât 420, 15 rue Georges Clemenceau, 91405 Orsay Cedex, France
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17
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Ragab SS, Kassir AF, Guillot R, Scherrmann MC, Boddaert T, Aitken DJ. Cooperative 5- and 10-membered ring interactions in the 10-helix folding of oxetin homo-oligomers. Chem Commun (Camb) 2018; 54:1968-1971. [PMID: 29399690 DOI: 10.1039/c7cc09964a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Homo-oligomers of the natural product oxetin (cis-3-amino-2-oxetanecarboxylic acid) were prepared and their conformational behaviour studied in solution and solid state and by molecular modelling. The predominant secondary structure was a 10-helix, propiciously stabilized by a network of 5-membered ring H-bonds implicating ring oxygens and neighboring amide hydrogen atoms.
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Affiliation(s)
- Sherif S Ragab
- CP3A Organic Synthesis Group, ICMMO, UMR 8182, CNRS, Université Paris-Sud, Université Paris-Saclay, 15 Rue Georges Clemenceau, 91405 Orsay cedex, France.
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18
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Chang Z, Boyaud F, Guillot R, Boddaert T, Aitken DJ. A Photochemical Route to 3- and 4-Hydroxy Derivatives of 2-Aminocyclobutane-1-carboxylic Acid with an all-cis Geometry. J Org Chem 2017; 83:527-534. [DOI: 10.1021/acs.joc.7b02559] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Zong Chang
- CP3A
Organic Synthesis Group, ICMMO, CNRS UMR 8182, Université Paris
Sud, Université Paris Saclay, 15 rue Georges Clemenceau, 91405 Orsay Cedex, France
| | - France Boyaud
- CP3A
Organic Synthesis Group, ICMMO, CNRS UMR 8182, Université Paris
Sud, Université Paris Saclay, 15 rue Georges Clemenceau, 91405 Orsay Cedex, France
| | - Régis Guillot
- Services
Communs, ICMMO, CNRS UMR 8182, Université Paris Sud, Université Paris Saclay, 15 rue Georges Clemenceau, 91405 Orsay Cedex, France
| | - Thomas Boddaert
- CP3A
Organic Synthesis Group, ICMMO, CNRS UMR 8182, Université Paris
Sud, Université Paris Saclay, 15 rue Georges Clemenceau, 91405 Orsay Cedex, France
| | - David J. Aitken
- CP3A
Organic Synthesis Group, ICMMO, CNRS UMR 8182, Université Paris
Sud, Université Paris Saclay, 15 rue Georges Clemenceau, 91405 Orsay Cedex, France
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19
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Burade SS, Shinde SV, Bhuma N, Kumbhar N, Kotmale A, Rajamohanan PR, Gonnade RG, Talukdar P, Dhavale DD. Acyclic αγα-Tripeptides with Fluorinated- and Nonfluorinated-Furanoid Sugar Framework: Importance of Fluoro Substituent in Reverse-Turn Induced Self-Assembly and Transmembrane Ion-Transport Activity. J Org Chem 2017; 82:5826-5834. [PMID: 28485150 DOI: 10.1021/acs.joc.7b00661] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Acyclic αγα-tripeptides derived from fluorinated-furanoid sugar amino acid frameworks act as reverse-turn inducers with a U-shaped conformation, whereas the corresponding nonfluorinated αγα-tripeptides show random peptide conformations. The NMR studies showed the presence of bifurcated weak intramolecular hydrogen bonding (F···HN) and N+···Fδ- charge-dipole attraction compel the amide carbonyl groups to orient antiperiplanar to the C-F bond, thus, demonstrating the role of the fluorine substituent in stabilizing the U-shaped conformation. The NOESY data indicate that the U-shaped tripeptides self-assembly formation is stabilized by the intermolecular hydrogen bonding between C═O···HN with antiparallel orientation. This fact is supported by ESI-MS data, which showed mass peaks up to the pentameric self-assembly, even in the gas phase. The morphological analysis by FE-SEM, on solid samples, showed arrangement of fibers into nanorods. The antiparallel self-assembled pore of the fluorinated tripeptides illustrates the selective ion-transport activity. The experimental findings were supported by DFT studies.
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Affiliation(s)
- Sachin S Burade
- Garware Research Center, Department of Chemistry, Savitribai Phule Pune University (formerly Pune University) , Pune 411007, India
| | - Sopan Valiba Shinde
- Indian Institute of Science Education and Research (IISER) , Pune 411008, India
| | - Naresh Bhuma
- Garware Research Center, Department of Chemistry, Savitribai Phule Pune University (formerly Pune University) , Pune 411007, India
| | - Navanath Kumbhar
- Garware Research Center, Department of Chemistry, Savitribai Phule Pune University (formerly Pune University) , Pune 411007, India
| | | | | | | | - Pinaki Talukdar
- Indian Institute of Science Education and Research (IISER) , Pune 411008, India
| | - Dilip D Dhavale
- Garware Research Center, Department of Chemistry, Savitribai Phule Pune University (formerly Pune University) , Pune 411007, India
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20
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Awada H, Grison CM, Charnay-Pouget F, Baltaze JP, Brisset F, Guillot R, Robin S, Hachem A, Jaber N, Naoufal D, Yazbeck O, Aitken DJ. Conformational Effects through Hydrogen Bonding in a Constrained γ-Peptide Template: From Intraresidue Seven-Membered Rings to a Gel-Forming Sheet Structure. J Org Chem 2017; 82:4819-4828. [PMID: 28398045 DOI: 10.1021/acs.joc.7b00494] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
A series of three short oligomers (di-, tri-, and tetramers) of cis-2-(aminomethyl)cyclobutane carboxylic acid, a γ-amino acid featuring a cyclobutane ring constraint, were prepared, and their conformational behavior was examined spectroscopically and by molecular modeling. In dilute solutions, these peptides showed a number of low-energy conformers, including ribbonlike structures pleated around a rarely observed series of intramolecular seven-membered hydrogen bonds. In more concentrated solutions, these interactions defer to an organized supramolecular assembly, leading to thermoreversible organogel formation notably for the tripeptide, which produced fibrillar xerogels. In the solid state, the dipeptide adopted a fully extended conformation featuring a one-dimensional network of intermolecularly H-bonded molecules stacked in an antiparallel sheet alignment. This work provides unique insight into the interplay between inter- and intramolecular H-bonded conformer topologies for the same peptide template.
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Affiliation(s)
- Hawraà Awada
- CP3A Organic Synthesis Group and Services Communs, ICMMO, UMR 8182, CNRS, Université Paris Sud, Université Paris Saclay , Bât. 420, 15 rue Georges Clemenceau, 91405 Orsay cedex, France.,Inorganic and Organometallic Coordination Chemistry Laboratory and Laboratory for Medicinal Chemistry and Natural Products, Faculty of Sciences (I) & PRASE-EDST, Lebanese University , Hadath, Lebanon
| | - Claire M Grison
- CP3A Organic Synthesis Group and Services Communs, ICMMO, UMR 8182, CNRS, Université Paris Sud, Université Paris Saclay , Bât. 420, 15 rue Georges Clemenceau, 91405 Orsay cedex, France
| | - Florence Charnay-Pouget
- CP3A Organic Synthesis Group and Services Communs, ICMMO, UMR 8182, CNRS, Université Paris Sud, Université Paris Saclay , Bât. 420, 15 rue Georges Clemenceau, 91405 Orsay cedex, France
| | - Jean-Pierre Baltaze
- CP3A Organic Synthesis Group and Services Communs, ICMMO, UMR 8182, CNRS, Université Paris Sud, Université Paris Saclay , Bât. 420, 15 rue Georges Clemenceau, 91405 Orsay cedex, France
| | - François Brisset
- CP3A Organic Synthesis Group and Services Communs, ICMMO, UMR 8182, CNRS, Université Paris Sud, Université Paris Saclay , Bât. 420, 15 rue Georges Clemenceau, 91405 Orsay cedex, France
| | - Régis Guillot
- CP3A Organic Synthesis Group and Services Communs, ICMMO, UMR 8182, CNRS, Université Paris Sud, Université Paris Saclay , Bât. 420, 15 rue Georges Clemenceau, 91405 Orsay cedex, France
| | - Sylvie Robin
- CP3A Organic Synthesis Group and Services Communs, ICMMO, UMR 8182, CNRS, Université Paris Sud, Université Paris Saclay , Bât. 420, 15 rue Georges Clemenceau, 91405 Orsay cedex, France.,UFR Sciences Pharmaceutiques et Biologiques, Université Paris Descartes , 4 avenue de l'Observatoire, 75270 Paris cedex 06, France
| | - Ali Hachem
- Inorganic and Organometallic Coordination Chemistry Laboratory and Laboratory for Medicinal Chemistry and Natural Products, Faculty of Sciences (I) & PRASE-EDST, Lebanese University , Hadath, Lebanon
| | - Nada Jaber
- Inorganic and Organometallic Coordination Chemistry Laboratory and Laboratory for Medicinal Chemistry and Natural Products, Faculty of Sciences (I) & PRASE-EDST, Lebanese University , Hadath, Lebanon
| | - Daoud Naoufal
- Inorganic and Organometallic Coordination Chemistry Laboratory and Laboratory for Medicinal Chemistry and Natural Products, Faculty of Sciences (I) & PRASE-EDST, Lebanese University , Hadath, Lebanon
| | - Ogaritte Yazbeck
- Inorganic and Organometallic Coordination Chemistry Laboratory and Laboratory for Medicinal Chemistry and Natural Products, Faculty of Sciences (I) & PRASE-EDST, Lebanese University , Hadath, Lebanon
| | - David J Aitken
- CP3A Organic Synthesis Group and Services Communs, ICMMO, UMR 8182, CNRS, Université Paris Sud, Université Paris Saclay , Bât. 420, 15 rue Georges Clemenceau, 91405 Orsay cedex, France
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21
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Kassir AF, Ragab SS, Nguyen TAM, Charnay-Pouget F, Guillot R, Scherrmann MC, Boddaert T, Aitken DJ. Synthetic Access to All Four Stereoisomers of Oxetin. J Org Chem 2016; 81:9983-9991. [DOI: 10.1021/acs.joc.6b01795] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
| | - Sherif S. Ragab
- Photochemistry
Department, Chemical Industries Research Division, National Research Center, Dokki, 12622 Giza, Egypt
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22
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Poplata S, Tröster A, Zou YQ, Bach T. Recent Advances in the Synthesis of Cyclobutanes by Olefin [2 + 2] Photocycloaddition Reactions. Chem Rev 2016; 116:9748-815. [PMID: 27018601 PMCID: PMC5025837 DOI: 10.1021/acs.chemrev.5b00723] [Citation(s) in RCA: 661] [Impact Index Per Article: 82.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2015] [Indexed: 11/30/2022]
Abstract
The [2 + 2] photocycloaddition is undisputedly the most important and most frequently used photochemical reaction. In this review, it is attempted to cover all recent aspects of [2 + 2] photocycloaddition chemistry with an emphasis on synthetically relevant, regio-, and stereoselective reactions. The review aims to comprehensively discuss relevant work, which was done in the field in the last 20 years (i.e., from 1995 to 2015). Organization of the data follows a subdivision according to mechanism and substrate classes. Cu(I) and PET (photoinduced electron transfer) catalysis are treated separately in sections 2 and 4 , whereas the vast majority of photocycloaddition reactions which occur by direct excitation or sensitization are divided within section 3 into individual subsections according to the photochemically excited olefin.
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Affiliation(s)
- Saner Poplata
- Department Chemie and Catalysis
Research Center (CRC), Technische Universität
München, D-85747 Garching, Germany
| | - Andreas Tröster
- Department Chemie and Catalysis
Research Center (CRC), Technische Universität
München, D-85747 Garching, Germany
| | - You-Quan Zou
- Department Chemie and Catalysis
Research Center (CRC), Technische Universität
München, D-85747 Garching, Germany
| | - Thorsten Bach
- Department Chemie and Catalysis
Research Center (CRC), Technische Universität
München, D-85747 Garching, Germany
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23
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Aparici I, Guerola M, Dialer C, Simón-Fuentes A, Sánchez-Roselló M, del Pozo C, Fustero S. Diastereodivergent Synthesis of Fluorinated Cyclic β3-Amino Acid Derivatives. Org Lett 2015; 17:5412-5. [DOI: 10.1021/acs.orglett.5b02759] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Isabel Aparici
- Departamento
de Química Orgánica Universidad de Valencia, 46100 Burjassot, Spain
| | - Marta Guerola
- Departamento
de Química Orgánica Universidad de Valencia, 46100 Burjassot, Spain
| | - Clemens Dialer
- Departamento
de Química Orgánica Universidad de Valencia, 46100 Burjassot, Spain
| | | | - María Sánchez-Roselló
- Departamento
de Química Orgánica Universidad de Valencia, 46100 Burjassot, Spain
- Centro
de Investigación Príncipe Felipe, Laboratorio de Moléculas Orgánicas, 46012 Valencia, Spain
| | - Carlos del Pozo
- Departamento
de Química Orgánica Universidad de Valencia, 46100 Burjassot, Spain
| | - Santos Fustero
- Departamento
de Química Orgánica Universidad de Valencia, 46100 Burjassot, Spain
- Centro
de Investigación Príncipe Felipe, Laboratorio de Moléculas Orgánicas, 46012 Valencia, Spain
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24
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Lee JH, Park HS, Kang YK. Conformational preferences of β-sheet structures in cyclopropane-containing γ-peptides. NEW J CHEM 2015. [DOI: 10.1039/c5nj00545k] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Oligo-γ-peptides based on 2-(aminomethyl)cyclopropanecarboxylic acid (γAmc3) with a cyclopropane constraint on the Cα–Cβ bond preferentially formed parallel β-sheets rather than antiparallel β-sheets due to the stronger N–H⋯O H-bonds in the parallel conformation.
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Affiliation(s)
- Ji Hyang Lee
- Department of Chemistry and BK21 PLUS Research Team
- Chungbuk National University
- Cheongju
- Republic of Korea
| | - Hae Sook Park
- Department of Nursing
- Cheju Halla University
- Cheju 690-708
- Republic of Korea
| | - Young Kee Kang
- Department of Chemistry and BK21 PLUS Research Team
- Chungbuk National University
- Cheongju
- Republic of Korea
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