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Benchouaia R, Doll M, Berthault P, Chighine K, Léonce E, Brotin T, Rycke ND. A Water-Soluble Cryptophane Decorated with Aromatic Amine Groups Shows High Affinity for Cesium and Thallium(I). J Org Chem 2024; 89:4560-4568. [PMID: 38484322 DOI: 10.1021/acs.joc.3c02791] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/06/2024]
Abstract
An anti-cryptophane decorated with three aromatic amine and three phenol groups shows a high affinity for the cesium and thallium cations in LiOH/H2O (0.1 M). The formation of the complexes was studied by 133Cs NMR and by 205Tl NMR spectroscopy at different temperatures. Characteristic signals for caged cesium and thallium were observed at a high field with respect to the signals of the free cations present in the bulk. Isothermal titration calorimetric experiments performed in LiOH/H2O (0.1 M) and NaOH/KCl buffer (pH = 13) allowed us to determine the parameter of complexation and to ascertain the high affinity of this cryptophane for cesium and thallium. A comparison with other cryptophanes that bind these two cations shows that the introduction of nitrogen atoms into the cryptophane backbone has an effect on the binding properties. The affinity for cesium and thallium(I) ions is in the following order of substitution: OH > NH2 > OCH2COOH. This study paves the way to the design of new efficient host molecules for the extraction of these two cations in aqueous solution.
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Affiliation(s)
- Rajaa Benchouaia
- ENS de Lyon, CNRS, UMR 5182, Laboratoire de Chimie, Univ Lyon, Lyon 69342, France
| | - Martin Doll
- ENS de Lyon, CNRS, UMR 5182, Laboratoire de Chimie, Univ Lyon, Lyon 69342, France
| | - Patrick Berthault
- CEA, CNRS, Nanoscience and Innovation for Materials, Biomedicine and Energy, University Paris Saclay, Gif-sur-Yvette 91191, France
| | - Kévin Chighine
- CEA, CNRS, Nanoscience and Innovation for Materials, Biomedicine and Energy, University Paris Saclay, Gif-sur-Yvette 91191, France
| | - Estelle Léonce
- CEA, CNRS, Nanoscience and Innovation for Materials, Biomedicine and Energy, University Paris Saclay, Gif-sur-Yvette 91191, France
| | - Thierry Brotin
- ENS de Lyon, CNRS, UMR 5182, Laboratoire de Chimie, Univ Lyon, Lyon 69342, France
| | - Nicolas De Rycke
- ENS de Lyon, CNRS, UMR 5182, Laboratoire de Chimie, Univ Lyon, Lyon 69342, France
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D'haese LCG, Daugey N, Pitrat D, Brotin T, Kapitán J, Liégeois V. Understanding the surrounding effects on Raman optical activity signatures of a chiral cage system: Cryptophane-PP-111. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 306:123484. [PMID: 37898056 DOI: 10.1016/j.saa.2023.123484] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Revised: 09/18/2023] [Accepted: 10/01/2023] [Indexed: 10/30/2023]
Abstract
Cryptophane molecules are cage-like structures consisting in two hemispheres, each made of three benzene rings. These hemispheres are bound together with three O(CH2)nOlinkers of various lengths giving rise to a plethora of cryptophane derivatives. Moreover, they are able to encapsulate neutral guests: CH2Cl2, CHCl3, …; and charged species: Cs+, Tl+, …. Finally, they exhibit chiroptical properties thanks to the anti arrangement of the linkers between the hemispheres. This work focuses on the Raman optical activity (ROA) signatures of Cryptophane-111 (n=1 for each linker). More specifically, we aim at simulating accurately its ROA spectra with and without a xenon atom inside its cavity. Experimental data (Buffeteau et al., 2017) have already demonstrated the effect of the encapsulation in the low-wavenumbers region. To generate the initial structures, we rely on the novel Conformer-Rotamer Ensemble Sampling Tool (CREST) program, developed by S. Grimme and co-workers. This is required due to the flexibility provided by the linkers. The CREST algorithm seems promising and has already been used to sample the potential energy surface (PES) of target systems before the simulation of their vibrational spectroscopies (Eikås et al., 2022). We observe large similarities between the two sets of conformers (one with and one without Xe encapsulated), demonstrating the robustness of the CREST algorithm. For corresponding structures, the presence of xenon pushed the two hemispheres slightly further apart. After optimization at the DFT level, only one unique conformer has a Boltzmann population ratio greater than 1%, pointing out the relative rigidity of the cage. Based on this unique conformer, our simulations are in good agreement with the experimental data. Regarding xenon encapsulation, the (experimental and theoretical) ROA signatures at low wavenumbers are impacted: slight shifts in wavenumbers are observed as well as a decrease in relative ROA intensity for bands around 150 cm-1. The wavenumber shifts were very well reproduced by our simulations, but the experimental decrease in the ROA intensity was unfortunately not reproduced.
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Affiliation(s)
- Lou C G D'haese
- Theoretical Chemistry Laboratory (LCT), Namur Institute of Structured Matter (NISM), University of Namur, 5000 Namur, Belgium.
| | - Nicolas Daugey
- Groupe Spectroscopie Moléculaire (GSM), Institut des Sciences Moléculaires (ISM), UMR-5255 CNRS, University of Bordeaux, 33405 Talence, France
| | - Delphine Pitrat
- Laboratoire de Chimie de l'ENSL, UMR-5182 CNRS, University of Lyon, 69342 Lyon, France
| | - Thierry Brotin
- Laboratoire de Chimie de l'ENSL, UMR-5182 CNRS, University of Lyon, 69342 Lyon, France
| | - Josef Kapitán
- Department of Optics, Palacký University of Olomouc, 77146 Olomouc, Czech Republic
| | - Vincent Liégeois
- Theoretical Chemistry Laboratory (LCT), Namur Institute of Structured Matter (NISM), University of Namur, 5000 Namur, Belgium
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Brotin T, Berthault P, Chighine K, Jeanneau E. Impact of the Syn/ Anti Relative Configuration of Cryptophane-222 on the Binding Affinity of Cesium and Thallium. ACS OMEGA 2022; 7:48361-48371. [PMID: 36591199 PMCID: PMC9798743 DOI: 10.1021/acsomega.2c06570] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Accepted: 11/09/2022] [Indexed: 06/17/2023]
Abstract
We report in this article the synthesis, the X-ray crystal structure of compound syn-2, and its binding properties with cesium and thallium in aqueous solution under basic conditions. Compound syn-2 is the diastereomeric compound of anti-1 that shows very high affinity for cesium and thallium in aqueous solution under the same conditions. Despite the close structural similarities that exist between the syn-2 and anti-1 compounds, they show large discrepancy in their ability to bind cesium and thallium cations in the same conditions. Indeed, the syn-2 derivative has a lower affinity for these two cationic species and the binding constants are several orders of magnitude lower than those found for its congener. The large differences in affinity observed with these two compounds can be explained by the relative position of the six hydroxyl groups to each other.
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Affiliation(s)
- Thierry Brotin
- ENSL,
CNRS, Laboratoire de Chimie UMR 5182, 46 Allée d’Italie, 69364 Lyon, France
| | - Patrick Berthault
- CNRS,
CEA, Nanosciences et Innovation pour les Matériaux, la Biomédecine
et l’Energie, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
| | - Kévin Chighine
- CNRS,
CEA, Nanosciences et Innovation pour les Matériaux, la Biomédecine
et l’Energie, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
| | - Erwann Jeanneau
- Centre
de Diffractométrie Henri Longchambon Université de Lyon
1, 5 rue la Doua, 69100 Villeurbanne, France
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Della-Negra O, Cirillo Y, Brotin T, Dutasta JP, Saaidi PL, Chatelet B, Martinez A. Access to the Syn diastereomers of cryptophane cages using HFIP. Chem Commun (Camb) 2022; 58:3330-3333. [PMID: 35188150 DOI: 10.1039/d1cc06607b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Cryptophane cages can adopt either an anti or syn configuration that present different recognition properties. While the synthesis of anti-cryptophanes is well reported, the synthesis of syn-cryptophanes remains a challenge. Herein, we demonstrate that the use of HFIP as a co-solvent during the second ring closure reaction significantly affects the regioselectivity, providing easier access to the syn-cryptophane stereomers.
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Affiliation(s)
| | - Yoann Cirillo
- Aix Marseille Univ., CNRS, Centrale Marseille, iSm2, Marseille, France.
| | - Thierry Brotin
- Laboratoire de Chimie, École Normale Supérieure de Lyon, CNRS, 46 Allée d'Italie, F-69364 Lyon, France
| | - Jean-Pierre Dutasta
- Laboratoire de Chimie, École Normale Supérieure de Lyon, CNRS, 46 Allée d'Italie, F-69364 Lyon, France
| | - Pierre-Loic Saaidi
- UMR 8030 Génomique métabolique/CEA/Institut de Biologie François Jacob/Genoscope/Université d'Evry Val d'Essonne/Université Paris-Saclay, France
| | - Bastien Chatelet
- Aix Marseille Univ., CNRS, Centrale Marseille, iSm2, Marseille, France.
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Doll M, Berthault P, Léonce E, Boutin C, Jeanneau E, Brotin T, De Rycke N. Study of syn and anti Xenon-Cryptophanes Complexes Decorated with Aromatic Amine Groups: Chemical Platforms for Accessing New Cryptophanes. J Org Chem 2022; 87:2912-2920. [PMID: 35080182 DOI: 10.1021/acs.joc.1c02774] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We report the synthesis of C3-symmetric cryptophanes decorated with three aromatic amine groups on the same CTB cap and their interaction with xenon. The relative stereochemistry of these two stereoisomers syn and anti was assessed thanks to the determination of the X-ray structure of an intermediate compound. As previously observed with the tris-aza-cryptophanes analogs anti-1 and syn-2 (J. Org. Chem. 2021, 86, 11, 7648-7658), both compounds anti-5 and syn-6 show a slow in-out exchange dynamics of xenon at 11.7 T. Our work supports the idea that the presence of nitrogen atoms grafted directly onto the cryptophane backbone has a strong impact on the in-out exchange dynamics of xenon whatever their stereochemistry. This result contrasts with the case of other cryptophanes decorated solely with methoxy substituents. Finally, we demonstrate that these new derivatives can be used to design new anti/syn cryptophanes bearing suitable ligands in order to constitute potent 129Xe NMR-based sensors. An example is reported here with the synthesis of the tris-iodo derivatives anti-13 and syn-14 from compounds anti-5 and syn-6.
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Affiliation(s)
- Martin Doll
- Laboratoire de Chimie, Université de Lyon, ENS de Lyon, CNRS UMR 5182, F69342 Lyon, France
| | - Patrick Berthault
- NIMBE, CEA, CNRS, Université de Paris Saclay, CEA Saclay, 91191 Gif-sur-Yvette, France
| | - Estelle Léonce
- NIMBE, CEA, CNRS, Université de Paris Saclay, CEA Saclay, 91191 Gif-sur-Yvette, France
| | - Céline Boutin
- NIMBE, CEA, CNRS, Université de Paris Saclay, CEA Saclay, 91191 Gif-sur-Yvette, France
| | - Erwann Jeanneau
- Centre de Diffractométrie Henri Longchambon, Université de Lyon 1, 5 rue la Doua, 69100 Villeurbanne, France
| | - Thierry Brotin
- Laboratoire de Chimie, Université de Lyon, ENS de Lyon, CNRS UMR 5182, F69342 Lyon, France
| | - Nicolas De Rycke
- Laboratoire de Chimie, Université de Lyon, ENS de Lyon, CNRS UMR 5182, F69342 Lyon, France
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Baydoun O, Buffeteau T, Brotin T. Enantiopure cryptophane derivatives: Synthesis and chiroptical properties. Chirality 2021; 33:562-596. [PMID: 34464474 DOI: 10.1002/chir.23347] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Revised: 07/21/2021] [Accepted: 07/23/2021] [Indexed: 01/30/2023]
Abstract
This review addresses the synthesis of enantiopure cryptophane and the study of their chiroptical properties. Cryptophane derivatives represent an important class of macrocyclic compounds that can bind a large range of species in solution under different conditions. The overwhelming majority of these host molecules is chiral, and their chiroptical properties have been thoroughly investigated. The first part of this review is dedicated to the optical resolution and the synthesis of enantiopure cryptophane derivatives. In a second part, the study of the chiroptical properties of these molecular hosts by different techniques such as electronic and vibrational circular dichroism and Raman optical activity is detailed. These techniques allow the determination of the absolute configuration of cryptophane derivatives and provide useful information about their conformation in different conditions.
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Affiliation(s)
- Orsola Baydoun
- Laboratoire de Chimie, Ens de Lyon, CNRS UMR 5182, Lyon, France
| | - Thierry Buffeteau
- Institut des Sciences Moléculaires, CNRS UMR 5255, Bordeaux University, Talence, France
| | - Thierry Brotin
- Laboratoire de Chimie, Ens de Lyon, CNRS UMR 5182, Lyon, France
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