1
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Picois N, Bodero L, Milbeo P, Brigaud T, Chaume G. Bimodal Use of Chiral α-Trifluoromethylalanine in Aib Foldamers: Study of the Position Impact Towards the Helical Screw-Sense Preference. Chemistry 2024; 30:e202400540. [PMID: 38445775 DOI: 10.1002/chem.202400540] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2024] [Revised: 02/28/2024] [Accepted: 03/06/2024] [Indexed: 03/07/2024]
Abstract
Oligomers of the achiral α-aminoisobutyric acid (Aib) adopt a 310 helical conformation in which the screw-sense preference can be controlled by a single chiral residue. The use of the fluorinated residue α-Trifluoromethylalanine (α-TfmAla) revealed a unique way to both induce and measure the screw-sense preference of such oligomers acting as 19F NMR probe. This work proposes a systematic study of the effect of this fluorinated chiral inducer on the helical screw-sense preference of poly-Aib oligomers. The impact of the position of the fluorinated residue into pentamers (N-terminal, central or C-terminal) as well as the nature of the C-terminal capping of the peptides was thoroughly studied in light of complete structural analysis. A deeper understanding of the fluorine effect was achieved confirming the unique ability of α-TfmAla as a helical screw-sense controller.
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Affiliation(s)
- Nathan Picois
- CY Cergy Paris Université, CNRS, BioCIS, 95000, Cergy Pontoise, France
- Université Paris-Saclay, CNRS, BioCIS, 91400, Orsay, France
| | - Lizeth Bodero
- CY Cergy Paris Université, CNRS, BioCIS, 95000, Cergy Pontoise, France
- Université Paris-Saclay, CNRS, BioCIS, 91400, Orsay, France
| | - Pierre Milbeo
- CY Cergy Paris Université, CNRS, BioCIS, 95000, Cergy Pontoise, France
- Université Paris-Saclay, CNRS, BioCIS, 91400, Orsay, France
| | - Thierry Brigaud
- CY Cergy Paris Université, CNRS, BioCIS, 95000, Cergy Pontoise, France
- Université Paris-Saclay, CNRS, BioCIS, 91400, Orsay, France
| | - Grégory Chaume
- CY Cergy Paris Université, CNRS, BioCIS, 95000, Cergy Pontoise, France
- Université Paris-Saclay, CNRS, BioCIS, 91400, Orsay, France
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2
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Boutahri Y, Ben Haj Salah K, Tisserand N, Lensen N, Crousse B, Brigaud T. Difluoroalanine: Synthesis, Incorporation in Peptides, and Hydrophobic Contribution Assessment. Org Lett 2023; 25:6937-6941. [PMID: 37695729 DOI: 10.1021/acs.orglett.3c02853] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/13/2023]
Abstract
The straightforward synthesis of chiral (R)- and (S)-difluoroalanine is reported. The key step is a Strecker-type reaction followed by hydrogenolysis, Fmoc protection, and acidic hydrolysis. Peptide coupling reactions at its N- and C-terminal positions provide diastereomerically pure tripeptides. On the basis of hydrophobicity index measurements, the hydrophobic contribution of difluoroalanine in a peptide chain was found to be similar to that of isoleucine for a smaller van der Waals volume of the side chain.
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Affiliation(s)
- Yazid Boutahri
- CY Cergy Paris Université, CNRS, BioCIS UMR 8076, 95000 Cergy-Pontoise, France
- Université Paris-Saclay, CNRS, BioCIS UMR 8076, 91400 Orsay, France
| | - Khoubaib Ben Haj Salah
- CY Cergy Paris Université, CNRS, BioCIS UMR 8076, 95000 Cergy-Pontoise, France
- Université Paris-Saclay, CNRS, BioCIS UMR 8076, 91400 Orsay, France
| | | | - Nathalie Lensen
- CY Cergy Paris Université, CNRS, BioCIS UMR 8076, 95000 Cergy-Pontoise, France
- Université Paris-Saclay, CNRS, BioCIS UMR 8076, 91400 Orsay, France
| | - Benoît Crousse
- Université Paris-Saclay, CNRS, BioCIS UMR 8076, 91400 Orsay, 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
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3
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Gregorc J, Lensen N, Chaume G, Iskra J, Brigaud T. Trifluoromethylthiolation of Tryptophan and Tyrosine Derivatives: A Tool for Enhancing the Local Hydrophobicity of Peptides. J Org Chem 2023; 88:13169-13177. [PMID: 37672679 PMCID: PMC10507666 DOI: 10.1021/acs.joc.3c01373] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Indexed: 09/08/2023]
Abstract
The incorporation of fluorinated groups into peptides significantly affects their biophysical properties. We report herein the synthesis of Fmoc-protected trifluoromethylthiolated tyrosine (CF3S-Tyr) and tryptophan (CF3S-Trp) analogues on a gram scale (77-93% yield) and demonstrate their use as highly hydrophobic fluorinated building blocks for peptide chemistry. The developed methodology was successfully applied to the late-stage regioselective trifluoromethylthiolation of Trp residues in short peptides (66-80% yield) and the synthesis of various CF3S-analogues of biologically active monoamines. To prove the concept, Fmoc-(CF3S)Tyr and -Trp were incorporated into the endomorphin-1 chain (EM-1) and into model tripeptides by solid-phase peptide synthesis. A remarkable enhancement of the local hydrophobicity of the trifluoromethylthiolated peptides was quantified by the chromatographic hydrophobicity index determination method, demonstrating the high potential of CF3S-containing amino acids for the rational design of bioactive peptides.
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Affiliation(s)
- Jure Gregorc
- Chair
of Organic Chemistry, Faculty of Chemistry and Chemical Technology, University of Ljubljana, Večna pot 113, Ljubljana 1000, Slovenia
- CY
Cergy Paris Université, CNRS, BioCIS, Cergy Pontoise 95000, France
- Université
Paris-Saclay, CNRS, BioCIS, Orsay 91400, France
| | - Nathalie Lensen
- CY
Cergy Paris Université, CNRS, BioCIS, Cergy Pontoise 95000, France
- Université
Paris-Saclay, CNRS, BioCIS, Orsay 91400, France
| | - Grégory Chaume
- CY
Cergy Paris Université, CNRS, BioCIS, Cergy Pontoise 95000, France
- Université
Paris-Saclay, CNRS, BioCIS, Orsay 91400, France
| | - Jernej Iskra
- Chair
of Organic Chemistry, Faculty of Chemistry and Chemical Technology, University of Ljubljana, Večna pot 113, Ljubljana 1000, Slovenia
| | - Thierry Brigaud
- CY
Cergy Paris Université, CNRS, BioCIS, Cergy Pontoise 95000, France
- Université
Paris-Saclay, CNRS, BioCIS, Orsay 91400, France
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4
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Terrien A, Rahgoshay K, Renaglia E, Lensen N, Jacquot Y, Marquant R, Brigaud T, Loison C, Chaume G, Miclet E. Inviting C5-Trifluoromethylated Pseudoprolines into Collagen Mimetic Peptides. Biomacromolecules 2023; 24:1555-1562. [PMID: 36786736 DOI: 10.1021/acs.biomac.2c01242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/15/2023]
Abstract
Numerous collagen mimetic peptides (CMPs) have been engineered using proline derivatives substituted at their C(3) and/or C(4) position in order to stabilize or functionalize collagen triple-helix mimics. However, no example has been reported so far with C(5) substitutions. Here, we introduce a fluorinated CMP incorporating trifluoromethyl groups at the C(5) position of pseudoproline residues. In tripeptide models, our CD, NMR, and molecular dynamics (MD) studies have shown that, when properly arranged, these residues meet the structural requirements for a triple-helix assembly. Two host-guest CMPs were synthesized and analyzed by CD spectroscopy. The NMR analysis in solution of the most stable confirmed the presence of structured homotrimers that we interpret as triple helices. MD calculations showed that the triple-helix model remained stable throughout the simulation with all six trifluoromethyl groups pointing outward from the triple helix. Pseudoprolines substituted at the C(5) positions appeared as valuable tools for the design of new fluorinated collagen mimetic peptides.
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Affiliation(s)
- Anaïs Terrien
- Laboratoire des Biomolécules, Sorbonne Université, Ecole Normale Supérieure, PSL University, CNRS, 4 place Jussieu, 75252 Paris Cedex 05, France
| | - Keyvan Rahgoshay
- CY Cergy Paris Université, CNRS, BioCIS, 95000 Cergy-Pontoise, France
| | - Emelyne Renaglia
- CY Cergy Paris Université, CNRS, BioCIS, 95000 Cergy-Pontoise, France
| | - Nathalie Lensen
- CY Cergy Paris Université, CNRS, BioCIS, 95000 Cergy-Pontoise, France
| | - Yves Jacquot
- CiTCoM, CNRS UMR 8038, INSERM U1268, Faculty of Pharmacy of Paris, University Paris Cité, 75270 Paris Cedex 06, France
| | - Rodrigue Marquant
- Laboratoire des Biomolécules, Sorbonne Université, Ecole Normale Supérieure, PSL University, CNRS, 4 place Jussieu, 75252 Paris Cedex 05, France
| | - Thierry Brigaud
- CY Cergy Paris Université, CNRS, BioCIS, 95000 Cergy-Pontoise, France
| | - Claire Loison
- Institut Lumière Matière, University of Lyon, Université Claude Bernard Lyon 1, CNRS, F-69622 Villeurbanne, France
| | - Grégory Chaume
- Laboratoire des Biomolécules, Sorbonne Université, Ecole Normale Supérieure, PSL University, CNRS, 4 place Jussieu, 75252 Paris Cedex 05, France.,CY Cergy Paris Université, CNRS, BioCIS, 95000 Cergy-Pontoise, France
| | - Emeric Miclet
- Laboratoire des Biomolécules, Sorbonne Université, Ecole Normale Supérieure, PSL University, CNRS, 4 place Jussieu, 75252 Paris Cedex 05, France
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5
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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] [What about the content of this article? (0)] [Affiliation(s)] [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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6
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Devillers E, Chelain E, Dalvit C, Brigaud T, Pytkowicz J. (R)-α-Trifluoromethylalanine as a 19 F NMR Probe for the Monitoring of Protease Digestion of Peptides. Chembiochem 2021; 23:e202100470. [PMID: 34738292 DOI: 10.1002/cbic.202100470] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Revised: 11/03/2021] [Indexed: 11/07/2022]
Abstract
Fluorinated non-natural amino acids are useful tools for improving the bioavailability of peptides but can also serve as fluorinated probes in 19 F NMR-based enzymatic assays. We report herein that the use of the non-natural α-quaternarized (R)-α-trifluoromethylalanine ((R)-α-TfmAla) provides convenient and accurate monitoring of trypsin proteolytic activity and increases resistance towards pepsin degradation.
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Affiliation(s)
- Emmanuelle Devillers
- CY Cergy Paris Université, CNRS, BIOCIS, 5 mail Gay Lussac, Neuville sur Oise, 95031, Cergy Pontoise, France.,Université Paris-Saclay, CNRS, BIOCIS, 92290, Châtenay-Malabry, France
| | - Evelyne Chelain
- CY Cergy Paris Université, CNRS, BIOCIS, 5 mail Gay Lussac, Neuville sur Oise, 95031, Cergy Pontoise, France.,Université Paris-Saclay, CNRS, BIOCIS, 92290, Châtenay-Malabry, France
| | - Claudio Dalvit
- Faculty of Science, University of Neuchatel, Avenue de Bellevaux 51, 2000, Neuchatel, Switzerland.,Present address: Lavis, Trento, Italy
| | - Thierry Brigaud
- CY Cergy Paris Université, CNRS, BIOCIS, 5 mail Gay Lussac, Neuville sur Oise, 95031, Cergy Pontoise, France.,Université Paris-Saclay, CNRS, BIOCIS, 92290, Châtenay-Malabry, France
| | - Julien Pytkowicz
- CY Cergy Paris Université, CNRS, BIOCIS, 5 mail Gay Lussac, Neuville sur Oise, 95031, Cergy Pontoise, France.,Université Paris-Saclay, CNRS, BIOCIS, 92290, Châtenay-Malabry, France
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7
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Sanchez CA, Gadais C, Diarra S, Bordessa A, Lensen N, Chelain E, Brigaud T. Synthesis of enantiopure α-Tfm-proline and α-Tfm-pipecolic acid from oxazolo-pyrrolidines and -piperidines. Org Biomol Chem 2021; 19:6771-6775. [PMID: 34292288 DOI: 10.1039/d1ob01173a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Enantiopure α-Tfm-proline and α-Tfm-pipecolic acid were synthesized starting from commercially available diesters and ethyl trifluoroacetate. A Strecker type reaction on intermediate chiral Tfm-oxazolo-pyrrolidine and -piperidine provided the corresponding nitrile precursor of enantiopure (R) and (S) α-Tfm-proline and α-Tfm-pipecolic acid. The C-terminal peptide coupling reaction of α-Tfm-pipecolic acid has been successfully achieved.
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Affiliation(s)
- Clément A Sanchez
- CY Cergy Paris Université, CNRS, BioCIS, 95000, Cergy Pontoise, France.
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8
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Sanchez CA, Gadais C, Chaume G, Girard S, Chelain E, Brigaud T. Enantiopure 5-CF 3-Proline: Synthesis, Incorporation in Peptides, and Tuning of the Peptide Bond Geometry. Org Lett 2021; 23:382-387. [PMID: 33369434 DOI: 10.1021/acs.orglett.0c03880] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The straightforward synthesis of enantiopure 5-(R)-and 5-(S)-trifluoromethylproline is reported. The key steps are a Ruppert-Prakash reagent addition on l-pyroglutamic esters followed by an elimination reaction and a selective reduction. The solution-phase and solid-phase incorporation of this unprotected enantiopure fluorinated amino acid in a short peptide chain was demonstrated. Compared to proline, the CF3 group provides a decrease of the trans to cis amide bond isomerization energy and an increase of the cis conformer population.
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Affiliation(s)
- Clément A Sanchez
- CNRS, BioCIS, CY Cergy Paris Université, 95000 Cergy Pontoise, France.,CNRS, BioCIS, Université Paris-Saclay, 92290 Châtenay-Malabry, France
| | - Charlène Gadais
- CNRS, BioCIS, CY Cergy Paris Université, 95000 Cergy Pontoise, France.,CNRS, BioCIS, Université Paris-Saclay, 92290 Châtenay-Malabry, France
| | - Grégory Chaume
- CNRS, BioCIS, CY Cergy Paris Université, 95000 Cergy Pontoise, France.,CNRS, BioCIS, Université Paris-Saclay, 92290 Châtenay-Malabry, France
| | - Sylvaine Girard
- CNRS, BioCIS, CY Cergy Paris Université, 95000 Cergy Pontoise, France.,CNRS, BioCIS, Université Paris-Saclay, 92290 Châtenay-Malabry, France
| | - Evelyne Chelain
- CNRS, BioCIS, CY Cergy Paris Université, 95000 Cergy Pontoise, France.,CNRS, BioCIS, Université Paris-Saclay, 92290 Châtenay-Malabry, France
| | - Thierry Brigaud
- CNRS, BioCIS, CY Cergy Paris Université, 95000 Cergy Pontoise, France.,CNRS, BioCIS, Université Paris-Saclay, 92290 Châtenay-Malabry, France
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9
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Ouerfelli O, Simon J, Chelain E, Pytkowicz J, Besbes R, Brigaud T. Enantiopure α-Trifluoromethylated Aziridine-2-carboxylic Acid (α-TfmAzy): Synthesis and Peptide Coupling. Org Lett 2020; 22:2946-2949. [PMID: 32216364 DOI: 10.1021/acs.orglett.0c00645] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
A straightforward synthesis of enantiopure α-trifluoromethyl aziridine-2-carboxylic acid (α-TfmAzy) is reported from a trifluoropyruvate derived enantiopure oxazolidine. A key Strecker-type synthetic step and a late cyanide basic hydrolysis gave the target compounds in six steps and 41% yield. A final peptide coupling was performed to demonstrate the usefulness of this highly constrained fluorinated unnatural amino acid.
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Affiliation(s)
- Oussema Ouerfelli
- CY Cergy Paris Université, CNRS, BioCIS, 95000, Cergy Pontoise, France.,Université Paris-Saclay, CNRS, BioCIS, 92290, Châtenay-Malabry, France.,Faculty of Sciences of Tunis, Laboratory of Analytical Chemistry and Electrochemistry, University of Tunis El Manar, Tunis El Manar 1068, Tunisia
| | - Julien Simon
- CY Cergy Paris Université, CNRS, BioCIS, 95000, Cergy Pontoise, France.,Université Paris-Saclay, CNRS, BioCIS, 92290, Châtenay-Malabry, France
| | - Evelyne Chelain
- CY Cergy Paris Université, CNRS, BioCIS, 95000, Cergy Pontoise, France.,Université Paris-Saclay, CNRS, BioCIS, 92290, Châtenay-Malabry, France
| | - Julien Pytkowicz
- CY Cergy Paris Université, CNRS, BioCIS, 95000, Cergy Pontoise, France.,Université Paris-Saclay, CNRS, BioCIS, 92290, Châtenay-Malabry, France
| | - Rafâa Besbes
- Faculty of Sciences of Tunis, Laboratory of Analytical Chemistry and Electrochemistry, University of Tunis El Manar, Tunis El Manar 1068, Tunisia
| | - Thierry Brigaud
- CY Cergy Paris Université, CNRS, BioCIS, 95000, Cergy Pontoise, France.,Université Paris-Saclay, CNRS, BioCIS, 92290, Châtenay-Malabry, France
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10
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Gadais C, Van Holsbeeck K, Moors SLC, Buyst D, Fehér K, Van Hecke K, Tourwé D, Brigaud T, Martin C, De Proft F, Pytkowicz J, Martins JC, Chaume G, Ballet S. Trifluoromethylated Proline Surrogates as Part of "Pro-Pro" Turn-Inducing Templates. Chembiochem 2019; 20:2513-2518. [PMID: 31062451 DOI: 10.1002/cbic.201900294] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2019] [Indexed: 12/27/2022]
Abstract
Proline is often found as a turn inducer in peptide or protein domains. Exploitation of its restricted conformational freedom led to the development of the d-Pro-l-Pro (corresponding to (R)-Pro-(S)-Pro) segment as a "templating" unit, frequently used in the design of β-hairpin peptidomimetics, in which conformational stability is, however, inherently linked to the cis-trans isomerization of the prolyl amide bonds. In this context, the stereoelectronic properties of the CF3 group can aid in conformational control. Herein, the impact of α-trifluoromethylated proline analogues is examined for the design of enhanced β-turn inducers. A theoretical conformational study permitted the dipeptide (R)-Pro-(R)-TfmOxa (TfmOxa: 2-trifluoromethyloxazolidine-2-carboxylic acid) to be selected as a template with an increased trans-cis rotational energy barrier. NMR spectroscopic analysis of the Ac-(R)-Pro-(R)-TfmOxa-(S)-Val-OtBu β-turn model, obtained through an original synthetic pathway, validated the prevalence of a major trans-trans conformer and indicated the presence of an internal hydrogen bond. Altogether, it was shown that the (R)-Pro-(R)-TfmOxa template fulfilled all crucial β-turn-inducer criteria.
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Affiliation(s)
- Charlène Gadais
- Research Group of Organic Chemistry, Departments of Bioengineering Sciences and Chemistry, Vrije Universiteit Brussel, Pleinlaan 2, 1050, Brussels, Belgium
| | - Kevin Van Holsbeeck
- Research Group of Organic Chemistry, Departments of Bioengineering Sciences and Chemistry, Vrije Universiteit Brussel, Pleinlaan 2, 1050, Brussels, Belgium.,NMR and Structure Analysis Unit, Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281, 9000, Gent, Belgium
| | - Samuel L C Moors
- Eenheid Algemene Chemie (ALGC), Department of Chemistry, Vrije Universiteit Brussel, Pleinlaan 2, 1050, Brussels, Belgium
| | - Dieter Buyst
- NMR and Structure Analysis Unit, Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281, 9000, Gent, Belgium
| | - Krisztina Fehér
- NMR and Structure Analysis Unit, Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281, 9000, Gent, Belgium
| | - Kristof Van Hecke
- XStruct Bio-Inorganic Group, Department of Chemistry, Ghent University, Krijgslaan 281, 9000, Gent, Belgium
| | - Dirk Tourwé
- Research Group of Organic Chemistry, Departments of Bioengineering Sciences and Chemistry, Vrije Universiteit Brussel, Pleinlaan 2, 1050, Brussels, Belgium
| | - Thierry Brigaud
- Laboratoire de Chimie Biologique, Université de Cergy-Pontoise, 5 Mail Gay-Lussac, 95031, Cergy-Pontoise cedex, France
| | - Charlotte Martin
- Research Group of Organic Chemistry, Departments of Bioengineering Sciences and Chemistry, Vrije Universiteit Brussel, Pleinlaan 2, 1050, Brussels, Belgium
| | - Frank De Proft
- Eenheid Algemene Chemie (ALGC), Department of Chemistry, Vrije Universiteit Brussel, Pleinlaan 2, 1050, Brussels, Belgium
| | - Julien Pytkowicz
- Laboratoire de Chimie Biologique, Université de Cergy-Pontoise, 5 Mail Gay-Lussac, 95031, Cergy-Pontoise cedex, France
| | - José C Martins
- NMR and Structure Analysis Unit, Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281, 9000, Gent, Belgium
| | - Grégory Chaume
- Laboratoire de Chimie Biologique, Université de Cergy-Pontoise, 5 Mail Gay-Lussac, 95031, Cergy-Pontoise cedex, France
| | - Steven Ballet
- Research Group of Organic Chemistry, Departments of Bioengineering Sciences and Chemistry, Vrije Universiteit Brussel, Pleinlaan 2, 1050, Brussels, Belgium
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11
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Malquin N, Rahgoshay K, Lensen N, Chaume G, Miclet E, Brigaud T. CF 2H as a hydrogen bond donor group for the fine tuning of peptide bond geometry with difluoromethylated pseudoprolines. Chem Commun (Camb) 2019; 55:12487-12490. [PMID: 31566647 DOI: 10.1039/c9cc05771d] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
CF2H-Pseudoprolines obtained from difluoroacetaldehyde hemiacetal and serine are stable proline surrogates. The consequence of the incorporation of the CF2H group is an important decrease of the trans to cis amide bond isomerization energy and a remarkable stabilisation of the cis conformer by an hydrogen bond.
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Affiliation(s)
- N Malquin
- Laboratory of Chemical Biology (LCB, EA 4505), Université de Cergy-Pontoise, 5 Mail Gay-Lussac, 95000 Cergy-Pontoise, France.
| | - K Rahgoshay
- Laboratory of Chemical Biology (LCB, EA 4505), Université de Cergy-Pontoise, 5 Mail Gay-Lussac, 95000 Cergy-Pontoise, France.
| | - N Lensen
- Laboratory of Chemical Biology (LCB, EA 4505), Université de Cergy-Pontoise, 5 Mail Gay-Lussac, 95000 Cergy-Pontoise, France.
| | - G Chaume
- Laboratory of Chemical Biology (LCB, EA 4505), Université de Cergy-Pontoise, 5 Mail Gay-Lussac, 95000 Cergy-Pontoise, France.
| | - E Miclet
- Sorbonne Université, École Normale Supérieure, PSL University, CNRS, Laboratoire des Biomolécules, 75005 Paris, France
| | - T Brigaud
- Laboratory of Chemical Biology (LCB, EA 4505), Université de Cergy-Pontoise, 5 Mail Gay-Lussac, 95000 Cergy-Pontoise, France.
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12
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Ouerfelli O, Tabarki MA, Pytkowicz J, Arfaoui Y, Brigaud T, Besbes R. Stereoselective synthesis of 4-hydroxymethyl-1,3-oxazolidin-2-one derivatives from novel 2-hydroxymethylaziridines. SYNTHETIC COMMUN 2018. [DOI: 10.1080/00397911.2018.1490771] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Oussema Ouerfelli
- Faculty of Sciences of Tunis, Laboratory of Analytical Chemistry and Electrochemistry, University of Tunis El Manar, Tunis El Manar, Tunisia
- Laboratoire de chimie biologique (LCB), Université de Cergy-Pontoise, Cergy-Pontoise cedex, France
| | - Mohamed Ali Tabarki
- Faculty of Sciences of Tunis, Laboratory of Analytical Chemistry and Electrochemistry, University of Tunis El Manar, Tunis El Manar, Tunisia
| | - Julien Pytkowicz
- Laboratoire de chimie biologique (LCB), Université de Cergy-Pontoise, Cergy-Pontoise cedex, France
| | - Youssef Arfaoui
- Faculty of Sciences of Tunis, Laboratory of Physical Chemistry of Condensed Matter, University of Tunis El Manar, Tunis El Manar, Tunisia
| | - Thierry Brigaud
- Laboratoire de chimie biologique (LCB), Université de Cergy-Pontoise, Cergy-Pontoise cedex, France
| | - Rafâa Besbes
- Faculty of Sciences of Tunis, Laboratory of Analytical Chemistry and Electrochemistry, University of Tunis El Manar, Tunis El Manar, Tunisia
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13
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Gadais C, Devillers E, Gasparik V, Chelain E, Pytkowicz J, Brigaud T. Probing the Outstanding Local Hydrophobicity Increases in Peptide Sequences Induced by Incorporation of Trifluoromethylated Amino Acids. Chembiochem 2018. [DOI: 10.1002/cbic.201800088] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Charlène Gadais
- Laboratory of Chemical Biology (LCB, EA 4505); Université Cergy-Pontoise; Mail Gay-Lussac 95000 Cergy-Pontoise cedex France
| | - Emmanuelle Devillers
- Laboratory of Chemical Biology (LCB, EA 4505); Université Cergy-Pontoise; Mail Gay-Lussac 95000 Cergy-Pontoise cedex France
| | - Vincent Gasparik
- Laboratory of Chemical Biology (LCB, EA 4505); Université Cergy-Pontoise; Mail Gay-Lussac 95000 Cergy-Pontoise cedex France
| | - Evelyne Chelain
- Laboratory of Chemical Biology (LCB, EA 4505); Université Cergy-Pontoise; Mail Gay-Lussac 95000 Cergy-Pontoise cedex France
| | - Julien Pytkowicz
- Laboratory of Chemical Biology (LCB, EA 4505); Université Cergy-Pontoise; Mail Gay-Lussac 95000 Cergy-Pontoise cedex France
| | - Thierry Brigaud
- Laboratory of Chemical Biology (LCB, EA 4505); Université Cergy-Pontoise; Mail Gay-Lussac 95000 Cergy-Pontoise cedex France
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14
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Grage SL, Kara S, Bordessa A, Doan V, Rizzolo F, Putzu M, Kubař T, Papini AM, Chaume G, Brigaud T, Afonin S, Ulrich AS. Orthogonal 19 F-Labeling for Solid-State NMR Spectroscopy Reveals the Conformation and Orientation of Short Peptaibols in Membranes. Chemistry 2018; 24:4328-4335. [PMID: 29323432 DOI: 10.1002/chem.201704307] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2017] [Indexed: 11/10/2022]
Abstract
Peptaibols are promising drug candidates in view of their interference with cellular membranes. Knowledge of their lipid interactions and membrane-bound structure is needed to understand their activity and should be, in principle, accessible by solid-state NMR spectroscopy. However, their unusual amino acid composition and noncanonical conformations make it very challenging to find suitable labels for NMR spectroscopy. Particularly in the case of short sequences, new strategies are required to maximize the structural information that can be obtained from each label. Herein, l-3-(trifluoromethyl)bicyclopent[1.1.1]-1-ylglycine, (R)- and (S)-trifluoromethylalanine, and 15 N-backbone labels, each probing a different direction in the molecule, have been combined to elucidate the conformation and membrane alignment of harzianin HK-VI. For the short sequence of 11 amino acids, 12 orientational constraints have been obtained by using 19 F and 15 N NMR spectroscopy. This strategy revealed a β-bend ribbon structure, which becomes realigned in the membrane from a surface-parallel state towards a membrane-spanning state, with increasing positive spontaneous curvature of the lipids.
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Affiliation(s)
- Stephan L Grage
- Institute of Biological Interfaces (IBG-2), Karlsruhe Institute of Technology (KIT), POB 3640, 76021, Karlsruhe, Germany
| | - Sezgin Kara
- Institute of Organic Chemistry (IOC), KIT, Fritz-Haber Weg 6, 76131, Karlsruhe, Germany
| | - Andrea Bordessa
- Laboratoire de Chimie Biologique (LCB), EA4505, Platform PeptLab@UCP, Université de Cergy-Pontoise, 5 Mail Gay-Lussac, Neuville sur Oise, 95000, Cergy-Pontoise cedex, France
| | - Véronique Doan
- Laboratoire de Chimie Biologique (LCB), EA4505, Platform PeptLab@UCP, Université de Cergy-Pontoise, 5 Mail Gay-Lussac, Neuville sur Oise, 95000, Cergy-Pontoise cedex, France
| | - Fabio Rizzolo
- Laboratoire de Chimie Biologique (LCB), EA4505, Platform PeptLab@UCP, Université de Cergy-Pontoise, 5 Mail Gay-Lussac, Neuville sur Oise, 95000, Cergy-Pontoise cedex, France.,French-Italian Interdepartmental Laboratory of Peptide and Protein Chemistry and Biology (PeptLab), Department of Chemistry "Ugo Schiff", CNR-IBB, University of Florence, 50019, Sesto Fiorentino, Italy
| | - Marina Putzu
- Institute of Physical Chemistry (IPC), Center for Functional Nanostructures (CFN), KIT, 76131, Karlsruhe, Germany
| | - Tomáš Kubař
- Institute of Physical Chemistry (IPC), Center for Functional Nanostructures (CFN), KIT, 76131, Karlsruhe, Germany
| | - Anna Maria Papini
- Laboratoire de Chimie Biologique (LCB), EA4505, Platform PeptLab@UCP, Université de Cergy-Pontoise, 5 Mail Gay-Lussac, Neuville sur Oise, 95000, Cergy-Pontoise cedex, France.,French-Italian Interdepartmental Laboratory of Peptide and Protein Chemistry and Biology (PeptLab), Department of Chemistry "Ugo Schiff", CNR-IBB, University of Florence, 50019, Sesto Fiorentino, Italy
| | - Grégory Chaume
- Laboratoire de Chimie Biologique (LCB), EA4505, Platform PeptLab@UCP, Université de Cergy-Pontoise, 5 Mail Gay-Lussac, Neuville sur Oise, 95000, Cergy-Pontoise cedex, France
| | - Thierry Brigaud
- Laboratoire de Chimie Biologique (LCB), EA4505, Platform PeptLab@UCP, Université de Cergy-Pontoise, 5 Mail Gay-Lussac, Neuville sur Oise, 95000, Cergy-Pontoise cedex, France
| | - Sergii Afonin
- Institute of Biological Interfaces (IBG-2), Karlsruhe Institute of Technology (KIT), POB 3640, 76021, Karlsruhe, Germany
| | - Anne S Ulrich
- Institute of Biological Interfaces (IBG-2), Karlsruhe Institute of Technology (KIT), POB 3640, 76021, Karlsruhe, Germany.,Institute of Organic Chemistry (IOC), KIT, Fritz-Haber Weg 6, 76131, Karlsruhe, Germany
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15
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Oliver M, Gadais C, García-Pindado J, Teixidó M, Lensen N, Chaume G, Brigaud T. Trifluoromethylated proline analogues as efficient tools to enhance the hydrophobicity and to promote passive diffusion transport of the l-prolyl-l-leucyl glycinamide (PLG) tripeptide. RSC Adv 2018; 8:14597-14602. [PMID: 35540789 PMCID: PMC9079923 DOI: 10.1039/c8ra02511h] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2018] [Accepted: 04/11/2018] [Indexed: 01/23/2023] Open
Abstract
The incorporation of trifluoromethylated proline analogues in the tripeptide PLG enhances its hydrophobicity and promotes passive diffusion transport.
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Affiliation(s)
- Martin Oliver
- Laboratoire de Chimie Biologique (LCB)
- Université de Cergy-Pontoise
- 95031 Cergy-Pontoise
- France
| | - Charlène Gadais
- Laboratoire de Chimie Biologique (LCB)
- Université de Cergy-Pontoise
- 95031 Cergy-Pontoise
- France
| | - Júlia García-Pindado
- Institute for Research in Biomedicine (IRB Barcelona)
- Barcelona Institute of Science and Technology (BIST)
- 08028 Barcelona
- Spain
| | - Meritxell Teixidó
- Institute for Research in Biomedicine (IRB Barcelona)
- Barcelona Institute of Science and Technology (BIST)
- 08028 Barcelona
- Spain
| | - Nathalie Lensen
- Laboratoire de Chimie Biologique (LCB)
- Université de Cergy-Pontoise
- 95031 Cergy-Pontoise
- France
| | - Grégory Chaume
- Laboratoire de Chimie Biologique (LCB)
- Université de Cergy-Pontoise
- 95031 Cergy-Pontoise
- France
| | - Thierry Brigaud
- Laboratoire de Chimie Biologique (LCB)
- Université de Cergy-Pontoise
- 95031 Cergy-Pontoise
- France
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16
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Chaume G, Simon J, Lensen N, Pytkowicz J, Brigaud T, Miclet E. Homochiral versus Heterochiral Trifluoromethylated Pseudoproline Containing Dipeptides: A Powerful Tool to Switch the Prolyl-Amide Bond Conformation. J Org Chem 2017; 82:13602-13608. [DOI: 10.1021/acs.joc.7b01944] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Grégory Chaume
- Laboratoire de Chimie Biologique (LCB), Université de Cergy-Pontoise, EA 4505, 5 Mail Gay-Lussac, 95000 Cergy-Pontoise, France
- Sorbonne Universités, UPMC Univ. Paris 06, École normale supérieure, PSL Research University, CNRS, Laboratoire des Biomolécules (LBM), 4 place Jussieu, 75005 Paris, France
| | - Julien Simon
- Laboratoire de Chimie Biologique (LCB), Université de Cergy-Pontoise, EA 4505, 5 Mail Gay-Lussac, 95000 Cergy-Pontoise, France
| | - Nathalie Lensen
- Laboratoire de Chimie Biologique (LCB), Université de Cergy-Pontoise, EA 4505, 5 Mail Gay-Lussac, 95000 Cergy-Pontoise, France
| | - Julien Pytkowicz
- Laboratoire de Chimie Biologique (LCB), Université de Cergy-Pontoise, EA 4505, 5 Mail Gay-Lussac, 95000 Cergy-Pontoise, France
| | - Thierry Brigaud
- Laboratoire de Chimie Biologique (LCB), Université de Cergy-Pontoise, EA 4505, 5 Mail Gay-Lussac, 95000 Cergy-Pontoise, France
| | - Emeric Miclet
- Sorbonne Universités, UPMC Univ. Paris 06, École normale supérieure, PSL Research University, CNRS, Laboratoire des Biomolécules (LBM), 4 place Jussieu, 75005 Paris, France
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17
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Gadais C, Saraiva-Rosa N, Chelain E, Pytkowicz J, Brigaud T. Tailored Approaches towards the Synthesis ofl-S-(Trifluoromethyl)cysteine- andl-Trifluoromethionine-Containing Peptides. European J Org Chem 2016. [DOI: 10.1002/ejoc.201601318] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Charlène Gadais
- Laboratoire de Chimie Biologique (LCB), EA 4505; Université de Cergy-Pontoise; 5 Mail Gay-Lussac 95000 Cergy-Pontoise France
| | - Nathalie Saraiva-Rosa
- Laboratoire de Chimie Biologique (LCB), EA 4505; Université de Cergy-Pontoise; 5 Mail Gay-Lussac 95000 Cergy-Pontoise France
| | - Evelyne Chelain
- Laboratoire de Chimie Biologique (LCB), EA 4505; Université de Cergy-Pontoise; 5 Mail Gay-Lussac 95000 Cergy-Pontoise France
| | - Julien Pytkowicz
- Laboratoire de Chimie Biologique (LCB), EA 4505; Université de Cergy-Pontoise; 5 Mail Gay-Lussac 95000 Cergy-Pontoise France
| | - Thierry Brigaud
- Laboratoire de Chimie Biologique (LCB), EA 4505; Université de Cergy-Pontoise; 5 Mail Gay-Lussac 95000 Cergy-Pontoise France
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18
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Simon J, Pytkowicz J, Lensen N, Chaume G, Brigaud T. Incorporation of Trifluoromethylated Proline and Surrogates into Peptides: Application to the Synthesis of Fluorinated Analogues of the Neuroprotective Glycine-Proline-Glutamate (GPE) Tripeptide. J Org Chem 2016; 81:5381-92. [DOI: 10.1021/acs.joc.6b00704] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Julien Simon
- Laboratoire de Chimie Biologique (LCB), Université de Cergy-Pontoise, EA 4505, 5 Mail Gay-Lussac, 95000 Cergy-Pontoise, France
| | - Julien Pytkowicz
- Laboratoire de Chimie Biologique (LCB), Université de Cergy-Pontoise, EA 4505, 5 Mail Gay-Lussac, 95000 Cergy-Pontoise, France
| | - Nathalie Lensen
- Laboratoire de Chimie Biologique (LCB), Université de Cergy-Pontoise, EA 4505, 5 Mail Gay-Lussac, 95000 Cergy-Pontoise, France
| | - Grégory Chaume
- Laboratoire de Chimie Biologique (LCB), Université de Cergy-Pontoise, EA 4505, 5 Mail Gay-Lussac, 95000 Cergy-Pontoise, France
| | - Thierry Brigaud
- Laboratoire de Chimie Biologique (LCB), Université de Cergy-Pontoise, EA 4505, 5 Mail Gay-Lussac, 95000 Cergy-Pontoise, France
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19
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Botz A, Gasparik V, Devillers E, Hoffmann ARF, Caillon L, Chelain E, Lequin O, Brigaud T, Khemtemourian L. (R)-α-trifluoromethylalanine containing short peptide in the inhibition of amyloid peptide fibrillation. Biopolymers 2015; 104:601-10. [DOI: 10.1002/bip.22670] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2015] [Revised: 03/16/2015] [Accepted: 05/04/2015] [Indexed: 12/25/2022]
Affiliation(s)
- Alexandra Botz
- Sorbonne Universités, UPMC Univ Paris 06, Laboratoire des Biomolécules; 4 Place Jussieu F-75005 Paris France
- Ecole Normale Supérieure-PSL Research University, Département De Chimie; 24 rue Lhomond F-75005 Paris France
- CNRS, UMR 7203 Laboratoire Des Biomolécules; F-75005 Paris France
| | - Vincent Gasparik
- Laboratoire De Chimie Biologique, Université De Cergy-Pontoise; EA 4505, 5 Mail Gay-Lussac 95000 Cergy-Pontoise France
| | - Emmanuelle Devillers
- Laboratoire De Chimie Biologique, Université De Cergy-Pontoise; EA 4505, 5 Mail Gay-Lussac 95000 Cergy-Pontoise France
| | - Anais R. F. Hoffmann
- Sorbonne Universités, UPMC Univ Paris 06, Laboratoire des Biomolécules; 4 Place Jussieu F-75005 Paris France
- Ecole Normale Supérieure-PSL Research University, Département De Chimie; 24 rue Lhomond F-75005 Paris France
- CNRS, UMR 7203 Laboratoire Des Biomolécules; F-75005 Paris France
| | - Lucie Caillon
- Sorbonne Universités, UPMC Univ Paris 06, Laboratoire des Biomolécules; 4 Place Jussieu F-75005 Paris France
- Ecole Normale Supérieure-PSL Research University, Département De Chimie; 24 rue Lhomond F-75005 Paris France
- CNRS, UMR 7203 Laboratoire Des Biomolécules; F-75005 Paris France
| | - Evelyne Chelain
- Laboratoire De Chimie Biologique, Université De Cergy-Pontoise; EA 4505, 5 Mail Gay-Lussac 95000 Cergy-Pontoise France
| | - Olivier Lequin
- Sorbonne Universités, UPMC Univ Paris 06, Laboratoire des Biomolécules; 4 Place Jussieu F-75005 Paris France
- Ecole Normale Supérieure-PSL Research University, Département De Chimie; 24 rue Lhomond F-75005 Paris France
- CNRS, UMR 7203 Laboratoire Des Biomolécules; F-75005 Paris France
| | - Thierry Brigaud
- Laboratoire De Chimie Biologique, Université De Cergy-Pontoise; EA 4505, 5 Mail Gay-Lussac 95000 Cergy-Pontoise France
| | - Lucie Khemtemourian
- Sorbonne Universités, UPMC Univ Paris 06, Laboratoire des Biomolécules; 4 Place Jussieu F-75005 Paris France
- Ecole Normale Supérieure-PSL Research University, Département De Chimie; 24 rue Lhomond F-75005 Paris France
- CNRS, UMR 7203 Laboratoire Des Biomolécules; F-75005 Paris France
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20
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Lubin H, Pytkowicz J, Chaume G, Sizun-Thomé G, Brigaud T. Synthesis of Enantiopure trans-2,5-Disubstituted Trifluoromethylpyrrolidines and (2S,5R)-5-Trifluoromethylproline. J Org Chem 2015; 80:2700-8. [DOI: 10.1021/jo502885v] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Hodney Lubin
- Laboratoire
de Chimie Biologique
(LCB), Université de Cergy-Pontoise, 5 Mail Gay-Lussac, 95000 Cergy-Pontoise cedex, France
| | - Julien Pytkowicz
- Laboratoire
de Chimie Biologique
(LCB), Université de Cergy-Pontoise, 5 Mail Gay-Lussac, 95000 Cergy-Pontoise cedex, France
| | - Grégory Chaume
- Laboratoire
de Chimie Biologique
(LCB), Université de Cergy-Pontoise, 5 Mail Gay-Lussac, 95000 Cergy-Pontoise cedex, France
| | - Gwenaëlle Sizun-Thomé
- Laboratoire
de Chimie Biologique
(LCB), Université de Cergy-Pontoise, 5 Mail Gay-Lussac, 95000 Cergy-Pontoise cedex, France
| | - Thierry Brigaud
- Laboratoire
de Chimie Biologique
(LCB), Université de Cergy-Pontoise, 5 Mail Gay-Lussac, 95000 Cergy-Pontoise cedex, France
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Lensen N, Marais J, Brigaud T. Straightforward synthesis of novel enantiopure α-trifluoromethylated azetidine 2-carboxylic acid and homoserines. Org Lett 2015; 17:342-5. [PMID: 25560883 DOI: 10.1021/ol503448w] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
The straightforward syntheses of enantiopure (2R)-2-trifluoromethyl-2-carboxyazetidine and (R)- and (S)-trifluoromethylhomoserines are reported. The key step is a Strecker-type reaction on a common chiral CF3-containing bicyclic oxazolidine intermediate obtained by a condensation reaction of (R)-phenylglycinol and ethyl-4,4,4-trifluoroacetoacetate (ETFAA).
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Affiliation(s)
- Nathalie Lensen
- Laboratoire de Chimie Biologique (LCB), EA 4505, Université de Cergy-Pontoise , 5 Mail, Gay-Lussac, Neuville sur Oise, 95000 Cergy-Pontoise Cedex, France
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22
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Abstract
While a series of carbo-mers of 1,3-cyclohexadienes was reported through the use of a specifically developed synthetic strategy, no example of their 1,4-regioisomers was known. Inspired by the methodology elaborated for the preparation of the 1,3-isomers, the synthesis of the first example of carbo-mer of 1,4-cyclohexadiene is presented. Comparison of physico-chemical properties of this first representative with those of the recently described 1,4-regioisomer, especially UV-vis absorption properties, is also addressed.
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Chaume G, Simon J, Caupène C, Lensen N, Miclet E, Brigaud T. Incorporation of CF3–Pseudoprolines into Peptides: A Methodological Study. J Org Chem 2013; 78:10144-53. [DOI: 10.1021/jo401494q] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Grégory Chaume
- Laboratoire SOSCO, Université de Cergy-Pontoise, EA 4505, 5 Mail Gay-Lussac, 95000 Cergy-Pontoise, France
| | - Julien Simon
- Laboratoire SOSCO, Université de Cergy-Pontoise, EA 4505, 5 Mail Gay-Lussac, 95000 Cergy-Pontoise, France
| | - Caroline Caupène
- Laboratoire SOSCO, Université de Cergy-Pontoise, EA 4505, 5 Mail Gay-Lussac, 95000 Cergy-Pontoise, France
| | - Nathalie Lensen
- Laboratoire SOSCO, Université de Cergy-Pontoise, EA 4505, 5 Mail Gay-Lussac, 95000 Cergy-Pontoise, France
| | - Emeric Miclet
- Laboratoire des
BioMolécules, UMR 7203, Ecole Normale Supérieure, UPMC Paris 06, 4 Place Jussieu, 75005 Paris, France
| | - Thierry Brigaud
- Laboratoire SOSCO, Université de Cergy-Pontoise, EA 4505, 5 Mail Gay-Lussac, 95000 Cergy-Pontoise, France
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Lubin H, Dupuis C, Pytkowicz J, Brigaud T. Crystallization-Induced Dynamic Resolution of Fox Chiral Auxiliary and Application to the Diastereoselective Electrophilic Fluorination of Amide Enolates. J Org Chem 2013; 78:3487-92. [DOI: 10.1021/jo400210j] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Hodney Lubin
- Laboratoire “Synthèse
Organique Sélective et Chimie bioOrganique” (SOSCO), Université de Cergy-Pontoise, 5 Mail Gay-Lussac
95000 Cergy-Pontoise cedex, France
| | - Christophe Dupuis
- Laboratoire “Synthèse
Organique Sélective et Chimie bioOrganique” (SOSCO), Université de Cergy-Pontoise, 5 Mail Gay-Lussac
95000 Cergy-Pontoise cedex, France
| | - Julien Pytkowicz
- Laboratoire “Synthèse
Organique Sélective et Chimie bioOrganique” (SOSCO), Université de Cergy-Pontoise, 5 Mail Gay-Lussac
95000 Cergy-Pontoise cedex, France
| | - Thierry Brigaud
- Laboratoire “Synthèse
Organique Sélective et Chimie bioOrganique” (SOSCO), Université de Cergy-Pontoise, 5 Mail Gay-Lussac
95000 Cergy-Pontoise cedex, France
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25
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Jlalia I, Lensen N, Chaume G, Dzhambazova E, Astasidi L, Hadjiolova R, Bocheva A, Brigaud T. Synthesis of an MIF-1 analogue containing enantiopure (S)-α-trifluoromethyl-proline and biological evaluation on nociception. Eur J Med Chem 2013; 62:122-9. [PMID: 23353749 DOI: 10.1016/j.ejmech.2012.12.041] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2012] [Revised: 12/19/2012] [Accepted: 12/23/2012] [Indexed: 11/16/2022]
Abstract
The synthesis and the effect of a novel MIF-1 analogue on nociception during acute pain in rat model are reported. The synthesis of this enantiopure trifluoromethyl group containing tripeptide was performed through a peptide coupling reaction between the HCl. Leu-Gly-NH2 and the (S)-α-Tfm-proline. The analgesic effect of the CF3-(MIF-1) 2 has been evaluated in vivo on rat model by paw pressure (PP) and hot plate (HP) tests and compared to the native peptide MIF-1. Highest analgesic effect was observed with CF3-(MIF-1) 2 only in PP test. In order to study the mechanisms of nociception induced by the studied peptides, the involvement of the opioid and the nitric oxideergic systems was investigated. The results are in favor of a participation of both system since pretreatment, 20 min before injection of the CF3-(MIF-1) 2, with the non-competitive antagonist of opiate receptors naloxone, the nitric oxide synthase (NOS) inhibitor l-N(G)-nitroarginine ester (l-NAME) or the nitric oxide (NO) donor l-arginine (l-Arg) significantly decreased the pain perception in PP and HP tests.
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Affiliation(s)
- Ibtissem Jlalia
- Laboratoire SOSCO, Université de Cergy-Pontoise, EA 4505, 5 Mail Gay Lussac, Neuville sur Oise, 95000 Cergy-Pontoise Cedex, France
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Chaume G, Feytens D, Chassaing G, Lavielle S, Brigaud T, Miclet E. Conformational properties of peptides incorporating a fluorinated pseudoproline residue. NEW J CHEM 2013. [DOI: 10.1039/c3nj41084f] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Feytens D, Chaume G, Chassaing G, Lavielle S, Brigaud T, Byun BJ, Kang YK, Miclet E. Local Control of the Cis–Trans Isomerization and Backbone Dihedral Angles in Peptides Using Trifluoromethylated Pseudoprolines. J Phys Chem B 2012; 116:4069-79. [DOI: 10.1021/jp300284u] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Debby Feytens
- Laboratoire des BioMolécules, UPMC Paris 06, 4, Place Jussieu, 75005 Paris, France
- Laboratoire des BioMolécules, Departement de Chimie, Ecole Normale Superieure, 24, rue Lhomond, 75005 Paris, France
- UMR 7203, FR 2569, 4, Place Jussieu, 75005 Paris, France
| | - Grégory Chaume
- Laboratoire SOSCO, Université de Cergy-Pontoise, EA 4505, 5 mail Gay Lussac, 95000 Cergy-Pontoise, France
| | - Gérard Chassaing
- Laboratoire des BioMolécules, UPMC Paris 06, 4, Place Jussieu, 75005 Paris, France
- Laboratoire des BioMolécules, Departement de Chimie, Ecole Normale Superieure, 24, rue Lhomond, 75005 Paris, France
- UMR 7203, FR 2569, 4, Place Jussieu, 75005 Paris, France
| | - Solange Lavielle
- Laboratoire des BioMolécules, UPMC Paris 06, 4, Place Jussieu, 75005 Paris, France
- Laboratoire des BioMolécules, Departement de Chimie, Ecole Normale Superieure, 24, rue Lhomond, 75005 Paris, France
- UMR 7203, FR 2569, 4, Place Jussieu, 75005 Paris, France
| | - Thierry Brigaud
- Laboratoire SOSCO, Université de Cergy-Pontoise, EA 4505, 5 mail Gay Lussac, 95000 Cergy-Pontoise, France
| | - Byung Jin Byun
- Department of Chemistry, Chungbuk National University, Cheongju, Chungbuk 361-763, Republic of Korea
| | - Young Kee Kang
- Department of Chemistry, Chungbuk National University, Cheongju, Chungbuk 361-763, Republic of Korea
| | - Emeric Miclet
- Laboratoire des BioMolécules, UPMC Paris 06, 4, Place Jussieu, 75005 Paris, France
- Laboratoire des BioMolécules, Departement de Chimie, Ecole Normale Superieure, 24, rue Lhomond, 75005 Paris, France
- UMR 7203, FR 2569, 4, Place Jussieu, 75005 Paris, France
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Tessier A, Pytkowicz J, Brigaud T. 2-Trifluoromethyl-2-methyl-4-phenyloxazolidine: A new chiral auxiliary for highly diastereoselective enolate alkylation. J Fluor Chem 2012. [DOI: 10.1016/j.jfluchem.2011.02.020] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Simon J, Chelain E, Brigaud T. Highly Diastereoselective Synthesis of Enantiopure β-Trifluoromethyl β-Amino Alcohols from Chiral Trifluoromethyl Oxazolidines (Fox). Org Lett 2011; 14:604-7. [DOI: 10.1021/ol2032174] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Julien Simon
- Laboratoire “Synthèse Organique Sélective et Chimie bioOrganique” (SOSCO), Université de Cergy-Pontoise, 5 Mail Gay-Lussac 95000 Cergy-Pontoise cedex, France
| | - Evelyne Chelain
- Laboratoire “Synthèse Organique Sélective et Chimie bioOrganique” (SOSCO), Université de Cergy-Pontoise, 5 Mail Gay-Lussac 95000 Cergy-Pontoise cedex, France
| | - Thierry Brigaud
- Laboratoire “Synthèse Organique Sélective et Chimie bioOrganique” (SOSCO), Université de Cergy-Pontoise, 5 Mail Gay-Lussac 95000 Cergy-Pontoise cedex, France
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Simon J, Nguyen TT, Chelain E, Lensen N, Pytkowicz J, Chaume G, Brigaud T. Concise synthesis of enantiopure (S)- and (R)-α-trifluoromethyl aspartic acid and α-trifluoromethyl serine from chiral trifluoromethyl oxazolidines (Fox) via a Strecker-type reaction. ACTA ACUST UNITED AC 2011. [DOI: 10.1016/j.tetasy.2011.01.007] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Massicot F, Iriarte AM, Brigaud T, Lebrun A, Portella C. Synthesis of trifluoromethyl cyclohexyl, cyclohexenyl and aryl compounds via stepwise Robinson annulation. Org Biomol Chem 2011; 9:600-3. [DOI: 10.1039/c0ob00518e] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Chaume G, Barbeau O, Lesot P, Brigaud T. Synthesis of 2-trifluoromethyl-1,3-oxazolidines as hydrolytically stable pseudoprolines. J Org Chem 2010; 75:4135-45. [PMID: 20481551 DOI: 10.1021/jo100518t] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Trifluoromethyl group containing oxazolidines (Fox) are conveniently synthesized by condensation of serine esters with trifluoroacetaldehyde hemiacetal or trifluoroacetone. These oxazolidines can undergo N-acylation and amidification reactions and are completely configurationally and hydrolytically stable. Therefore, they can be considered as highly valuable proline surrogates (Tfm-pseudoprolines).
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Affiliation(s)
- Grégory Chaume
- Laboratoire SOSCO, Université de Cergy-Pontoise, 5 Mail Gay-Lussac, Neuville sur Oise, 95000 Cergy-Pontoise cedex, France
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Lubin H, Tessier A, Chaume G, Pytkowicz J, Brigaud T. Highly Diastereoselective α-Hydroxylation of Fox Chiral Auxiliary-Based Amide Enolates with Molecular Oxygen. Org Lett 2010; 12:1496-9. [DOI: 10.1021/ol100211s] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Hodney Lubin
- Laboratoire “ Synthèse Organique Sélective et Chimie bioOrganique ” (SOSCO), Université de Cergy-Pontoise, 5 Mail Gay-Lussac 95000 Cergy-Pontoise Cedex, France
| | - Arnaud Tessier
- Laboratoire “ Synthèse Organique Sélective et Chimie bioOrganique ” (SOSCO), Université de Cergy-Pontoise, 5 Mail Gay-Lussac 95000 Cergy-Pontoise Cedex, France
| | - Grégory Chaume
- Laboratoire “ Synthèse Organique Sélective et Chimie bioOrganique ” (SOSCO), Université de Cergy-Pontoise, 5 Mail Gay-Lussac 95000 Cergy-Pontoise Cedex, France
| | - Julien Pytkowicz
- Laboratoire “ Synthèse Organique Sélective et Chimie bioOrganique ” (SOSCO), Université de Cergy-Pontoise, 5 Mail Gay-Lussac 95000 Cergy-Pontoise Cedex, France
| | - Thierry Brigaud
- Laboratoire “ Synthèse Organique Sélective et Chimie bioOrganique ” (SOSCO), Université de Cergy-Pontoise, 5 Mail Gay-Lussac 95000 Cergy-Pontoise Cedex, France
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Pytkowicz J, Stéphany O, Marinkovic S, Inagaki S, Brigaud T. Straightforward synthesis of enantiopure (R)- and (S)-trifluoroalaninol. Org Biomol Chem 2010; 8:4540-2. [DOI: 10.1039/c0ob00424c] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Chaume G, Lensen N, Caupène C, Brigaud T. Convenient Synthesis of N-Terminal Tfm-Dipeptides from Unprotected Enantiopure α-Tfm-Proline and α-Tfm-Alanine (Eur. J. Org. Chem. 33/2009). European J Org Chem 2009. [DOI: 10.1002/ejoc.200990093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Chaume G, Lensen N, Caupène C, Brigaud T. Convenient Synthesis ofN-Terminal Tfm-Dipeptides from Unprotected Enantiopure α-Tfm-Proline and α-Tfm-Alanine. European J Org Chem 2009. [DOI: 10.1002/ejoc.200900768] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Caupène C, Chaume G, Ricard L, Brigaud T. Iodocyclization of Chiral CF3-Allylmorpholinones: A Versatile Strategy for the Synthesis of Enantiopure α-Tfm-Prolines and α-Tfm-Dihydroxyprolines. Org Lett 2008; 11:209-12. [DOI: 10.1021/ol8024567] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Caroline Caupène
- Laboratoire SOSCO (Synthèse Organique Sélective et Chimie Organométallique), Université de Cergy-Pontoise, UMR CNRS 8123, F-95000 Cergy-Pontoise, France, and Laboratoire Hétéroéléments et Coordination, Ecole Polytechnique, UMR CNRS 7653, 91128 Palaiseau, France
| | - Grégory Chaume
- Laboratoire SOSCO (Synthèse Organique Sélective et Chimie Organométallique), Université de Cergy-Pontoise, UMR CNRS 8123, F-95000 Cergy-Pontoise, France, and Laboratoire Hétéroéléments et Coordination, Ecole Polytechnique, UMR CNRS 7653, 91128 Palaiseau, France
| | - Louis Ricard
- Laboratoire SOSCO (Synthèse Organique Sélective et Chimie Organométallique), Université de Cergy-Pontoise, UMR CNRS 8123, F-95000 Cergy-Pontoise, France, and Laboratoire Hétéroéléments et Coordination, Ecole Polytechnique, UMR CNRS 7653, 91128 Palaiseau, France
| | - Thierry Brigaud
- Laboratoire SOSCO (Synthèse Organique Sélective et Chimie Organométallique), Université de Cergy-Pontoise, UMR CNRS 8123, F-95000 Cergy-Pontoise, France, and Laboratoire Hétéroéléments et Coordination, Ecole Polytechnique, UMR CNRS 7653, 91128 Palaiseau, France
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Sini G, Tessier A, Pytkowicz J, Brigaud T. Fluorine... and pi...alkali metal interactions control in the stereoselective amide enolate alkylation with fluorinated oxazolidines (Fox) as a chiral auxiliary: an experimental and theoretical study. Chemistry 2008; 14:3363-70. [PMID: 18283703 DOI: 10.1002/chem.200701604] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
The alpha-alkylation of amide enolates by using a pseudo-C(2) symmetry trans 4-phenyl-2-trifluoromethyloxazolidine (trans-Fox) as a chiral auxiliary occurs with an extremely high diastereoselectivity (>99 % de). The origin of this excellent stereocontrol was investigated by an experimental and theoretical (DFT) study. With this trans chiral auxiliary, both F...metal and pi...metal interactions compete to give the same diastereomer through Re face alkylation of the enolate. A 5.5 kcal mol(-1) energy difference found between the Re face and the Si face attack transition states is consistent with the complete diastereoselectivity that has been experimentally achieved. On the other hand, in the case of the cis chiral auxiliary (cis-Fox) the competition between the F...metal and pi...metal interactions is unfavourable to the diastereoselectivity. In this case, the Re face and the Si face attack transition states were found to be nearly isoenergetic (0.3 kcal mol(-1) difference), which is in good agreement with the very low diastereoselectivity observed.
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Affiliation(s)
- Gjergji Sini
- Laboratoire LPPI, Université de Cergy-Pontoise, 5 Mail Gay-Lussac, Neuville sur Oise, Cergy-Pontoise cedex, France.
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Tessier A, Lahmar N, Pytkowicz J, Brigaud T. Highly Diastereoselective Synthetic Route to Enantiopure β2-Amino Acids and γ-Amino Alcohols Using a Fluorinated Oxazolidine (Fox) as Chiral Auxiliary. J Org Chem 2008; 73:3970-3. [DOI: 10.1021/jo800562x] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Arnaud Tessier
- Laboratoire “Synthèse Organique Sélective et Chimie Organométallique” (SOSCO), UMR CNRS 8123, Université de Cergy-Pontoise, 5, Mail Gay Lussac Neuville sur Oise 95031, Cergy-Pontoise Cedex, France
| | - Nour Lahmar
- Laboratoire “Synthèse Organique Sélective et Chimie Organométallique” (SOSCO), UMR CNRS 8123, Université de Cergy-Pontoise, 5, Mail Gay Lussac Neuville sur Oise 95031, Cergy-Pontoise Cedex, France
| | - Julien Pytkowicz
- Laboratoire “Synthèse Organique Sélective et Chimie Organométallique” (SOSCO), UMR CNRS 8123, Université de Cergy-Pontoise, 5, Mail Gay Lussac Neuville sur Oise 95031, Cergy-Pontoise Cedex, France
| | - Thierry Brigaud
- Laboratoire “Synthèse Organique Sélective et Chimie Organométallique” (SOSCO), UMR CNRS 8123, Université de Cergy-Pontoise, 5, Mail Gay Lussac Neuville sur Oise 95031, Cergy-Pontoise Cedex, France
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Huguenot F, Billac A, Brigaud T, Portella C. Umpolung Reactivity of Difluoroenol Silyl Ethers with Amines and Amino Alcohols. Application to the Synthesis of Enantiopure α-Difluoromethyl Amines and Amino Acids. J Org Chem 2008; 73:2564-9. [DOI: 10.1021/jo702328v] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Florent Huguenot
- Institut de Chimie Moléculaire de Reims, CNRS - Université de Reims Champagne-Ardenne (UMR 6229), Faculté des Sciences, B.P. 1039, 51687 Reims Cedex 2, France, and Laboratoire “ Synthèse Organique Sélective et Chimie Organométallique ” (SOSCO), UMR CNRS 8123, Université de Cergy-Pontoise, 5 Mail Gay-Lussac, Neuville sur Oise, 95031 Cergy-Pontoise Cedex, France
| | - Anne Billac
- Institut de Chimie Moléculaire de Reims, CNRS - Université de Reims Champagne-Ardenne (UMR 6229), Faculté des Sciences, B.P. 1039, 51687 Reims Cedex 2, France, and Laboratoire “ Synthèse Organique Sélective et Chimie Organométallique ” (SOSCO), UMR CNRS 8123, Université de Cergy-Pontoise, 5 Mail Gay-Lussac, Neuville sur Oise, 95031 Cergy-Pontoise Cedex, France
| | - Thierry Brigaud
- Institut de Chimie Moléculaire de Reims, CNRS - Université de Reims Champagne-Ardenne (UMR 6229), Faculté des Sciences, B.P. 1039, 51687 Reims Cedex 2, France, and Laboratoire “ Synthèse Organique Sélective et Chimie Organométallique ” (SOSCO), UMR CNRS 8123, Université de Cergy-Pontoise, 5 Mail Gay-Lussac, Neuville sur Oise, 95031 Cergy-Pontoise Cedex, France
| | - Charles Portella
- Institut de Chimie Moléculaire de Reims, CNRS - Université de Reims Champagne-Ardenne (UMR 6229), Faculté des Sciences, B.P. 1039, 51687 Reims Cedex 2, France, and Laboratoire “ Synthèse Organique Sélective et Chimie Organométallique ” (SOSCO), UMR CNRS 8123, Université de Cergy-Pontoise, 5 Mail Gay-Lussac, Neuville sur Oise, 95031 Cergy-Pontoise Cedex, France
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Chaume G, Van Severen MC, Marinkovic S, Brigaud T. Straightforward synthesis of (S)- and (R)-alpha-trifluoromethyl proline from chiral oxazolidines derived from ethyl trifluoropyruvate. Org Lett 2007; 8:6123-6. [PMID: 17165945 DOI: 10.1021/ol062593+] [Citation(s) in RCA: 71] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
[Structure: see text] A concise synthesis of both enantiomers of alpha-Tfm-proline and (S)-alpha-Tfm-prolinol from ethyl trifluoropyruvate is reported. The key step is a diastereoselective allylation reaction of ethyl trifluoropyruvate and (R)-phenylglycinol-based oxazolidines or imine. The lactone obtained by cyclization of the resulting hydroxy ester proved to be a valuable intermediate for the synthesis of (S)-alpha-Tfm-allylglycine and (S)-alpha-Tfm-norvaline in enantiopure form.
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Affiliation(s)
- Grégory Chaume
- Laboratoire Synthèse Organique Sélective et Chimie Organométallique (SOSCO), UMR CNRS 8123, Université de Cergy-Pontoise, 5, Mail Gay-Lussac-Neuville sur Oise 95031, Cergy-Pontoise Cedex, France
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Tessier A, Pytkowicz J, Brigaud T. Chiral 4-phenyl-2-trifluoromethyloxazolidine: a high-performance chiral auxiliary for the alkylation of amides. Angew Chem Int Ed Engl 2007; 45:3677-81. [PMID: 16639757 DOI: 10.1002/anie.200600738] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Arnaud Tessier
- Laboratoire Synthèse Organique Sélective et Chimie Organométallique (SOSCO), UMR CNRS 8123, Université de Cergy-Pontoise, 5 Mail Gay-Lussac, Neuville sur Oise, 95031 Cergy-Pontoise cedex, France
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Chaume G, Van Severen MC, Marinkovic S, Brigaud T. Straightforward synthesis of (S)- and (R)-alpha-trifluoromethyl proline from chiral oxazolidines derived from ethyl trifluoropyruvate. Org Lett 2006. [PMID: 17165945 DOI: 10.1021/ol062593] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
[Structure: see text] A concise synthesis of both enantiomers of alpha-Tfm-proline and (S)-alpha-Tfm-prolinol from ethyl trifluoropyruvate is reported. The key step is a diastereoselective allylation reaction of ethyl trifluoropyruvate and (R)-phenylglycinol-based oxazolidines or imine. The lactone obtained by cyclization of the resulting hydroxy ester proved to be a valuable intermediate for the synthesis of (S)-alpha-Tfm-allylglycine and (S)-alpha-Tfm-norvaline in enantiopure form.
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Affiliation(s)
- Grégory Chaume
- Laboratoire Synthèse Organique Sélective et Chimie Organométallique (SOSCO), UMR CNRS 8123, Université de Cergy-Pontoise, 5, Mail Gay-Lussac-Neuville sur Oise 95031, Cergy-Pontoise Cedex, France
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Huguenot F, Brigaud T. Concise Synthesis of Enantiopure α-Trifluoromethyl Alanines, Diamines, and Amino Alcohols via the Strecker-type Reaction. J Org Chem 2006; 71:7075-8. [PMID: 16930068 DOI: 10.1021/jo0607717] [Citation(s) in RCA: 67] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Diastereomerically pure alpha-trifluoromethyl alpha-amino nitriles obtained by Strecker-type reactions from chiral CF3 imines and iminium proved to be very attractive versatile intermediates for the synthesis of various alpha-trifluoromethyl amino compounds. From these synthons, both enantiomers of alpha-trifluoromethyl alanine, trifluoromethyl 1,2-diamines, and amino alcohols were conveniently obtained in enantiopure form in high yields in a few steps.
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Affiliation(s)
- Florent Huguenot
- Laboratoire Réactions Sélectives et Applications, UMR CNRS 6519, Université de Reims-Champagne-Ardenne, Faculté des Sciences, BP 1039, 51687 Reims Cedex 2, France
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Tessier A, Pytkowicz J, Brigaud T. Chiral 4-Phenyl-2-trifluoromethyloxazolidine: A High-Performance Chiral Auxiliary for the Alkylation of Amides. Angew Chem Int Ed Engl 2006. [DOI: 10.1002/ange.200600738] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Huguenot F, Brigaud T. Convenient Asymmetric Synthesis of β-Trifluoromethyl-β-amino Acid, β-Amino Ketones, and γ-Amino Alcohols via Reformatsky and Mannich-Type Reactions from 2-Trifluoromethyl-1,3-oxazolidines. J Org Chem 2006; 71:2159-62. [PMID: 16497009 DOI: 10.1021/jo052323p] [Citation(s) in RCA: 69] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The stereoselective syntheses of beta-trifluoromethyl-beta-amino ester, beta lactams, and beta-amino ketones starting from an oxazolidine derived from trifluoroacetaldehyde hemiacetal and (R)-phenylglycinol are reported. The Mannich-type reaction involving a chiral fluorinated iminium ion occurred in a good yield and with a higher stereoselectivity (dr up to 96:4) than that of the Reformatsky-type reaction. This straightforward strategy was applied to the short syntheses of (R)-3-amino-4,4,4-trifluorobutanoic acid, a series of novel enantiopure unprotected fluorinated beta-amino ketones, and their corresponding gamma-amino alcohols.
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Affiliation(s)
- Florent Huguenot
- Laboratoire Réactions Sélectives et Applications, UMR CNRS 6519, Université de Reims-Champagne-Ardenne, Faculté des Sciences, BP 1039, 51687 Reims Cedex 2, France
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Jonet S, Cherouvrier F, Brigaud T, Portella C. Mild Synthesis of β-Amino-α,α-difluoro Ketones from Acylsilanes and Trifluoromethyltrimethylsilane in a One-Pot Imino Aldol Reaction. European J Org Chem 2005. [DOI: 10.1002/ejoc.200500106] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Fries S, Pytkowicz J, Brigaud T. Highly diastereoselective addition of organometallic reagents to a trifluoroacetaldehyde hydrazone derived from (R)-N-benzylphenylglycinol. Tetrahedron Lett 2005. [DOI: 10.1016/j.tetlet.2005.05.040] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Lebouvier N, Laroche C, Huguenot F, Brigaud T. Lewis acid activation of chiral 2-trifluoromethyl-1,3-oxazolidines. Application to the stereoselective synthesis of trifluoromethylated amines, α- and β-amino acids. Tetrahedron Lett 2002. [DOI: 10.1016/s0040-4039(02)00330-1] [Citation(s) in RCA: 64] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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