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Gole B, Kauffmann B, Tron A, Maurizot V, McClenaghan N, Huc I, Ferrand Y. Selective and Cooperative Photocycloadditions within Multistranded Aromatic Sheets. J Am Chem Soc 2022; 144:6894-6906. [PMID: 35380826 DOI: 10.1021/jacs.2c01269] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
A series of aromatic helix-sheet-helix oligoamide foldamers composed of several different photosensitive diazaanthracene units have been designed and synthesized. Molecular objects up to 7 kDa were straightforwardly produced on a 100 mg scale. Nuclear magnetic resonance and crystallographic investigations revealed that helix-sheet-helix architectures can adopt one or two distinct conformations. Sequences composed of an even number of turn units were found to fold in a canonical symmetrical conformation with two helices of identical handedness stacked above and below the sheet segment. Sequences composed of an odd number of turns revealed a coexistence between a canonical fold with helices of opposite handedness and an alternate fold with a twist within the sheet and two helices of identical handedness. The proportions between these species could be manipulated, in some cases quantitatively, being dependent on solvent, temperature, and absolute control of helix handedness. Diazaanthracene units were shown to display distinct reactivity toward [4 + 4] photocycloadditions according to the substituent in position 9. Their organization within the sequences was programmed to allow photoreactions to take place in a specific order. Reaction pathways and kinetics were deciphered and product characterized, demonstrating the possibility to orchestrate successive photoreactions so as to avoid orphan units or to deliberately produce orphan units at precise locations. Strong cooperative effects were observed in which the photoreaction rate was influenced by the presence (or absence) of photoadducts in the structure. Multiple photoreactions within the aromatic sheet eventually lead to structure lengthening and stiffening, locking conformational equilibria. Photoproducts could be thermally reverted.
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Affiliation(s)
- Bappaditya Gole
- Univ. Bordeaux, CNRS, Bordeaux Institut National Polytechnique, CBMN (UMR 5248), 2 rue Escarpit, 33600 Pessac, France
| | - Brice Kauffmann
- Univ. Bordeaux, CNRS, INSERM, Institut Européen de Chimie Biologie (UMS3033/US001), 2 rue Escarpit, 33600 Pessac, France
| | - Arnaud Tron
- Univ. Bordeaux, CNRS, Institut des Sciences Moléculaires (UMR5255), 351 cours de la Libération, 33405 Talence cedex, France
| | - Victor Maurizot
- Univ. Bordeaux, CNRS, Bordeaux Institut National Polytechnique, CBMN (UMR 5248), 2 rue Escarpit, 33600 Pessac, France
| | - Nathan McClenaghan
- Univ. Bordeaux, CNRS, Institut des Sciences Moléculaires (UMR5255), 351 cours de la Libération, 33405 Talence cedex, France
| | - Ivan Huc
- Department of Pharmacy, Ludwig-Maximilians-University, Butenandtstr. 5-13, 81377 Munich, Germany.,Cluster of Excellence e-Conversion, 85748 Garching, Germany
| | - Yann Ferrand
- Univ. Bordeaux, CNRS, Bordeaux Institut National Polytechnique, CBMN (UMR 5248), 2 rue Escarpit, 33600 Pessac, France
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Liu YZ, Mu X, Chan CK, Robeyns K, Wang CC, Singleton ML. Water binding stabilizes stacked conformations of ferrocene containing sheet-like aromatic oligoamides. Org Biomol Chem 2021; 19:5521-5524. [PMID: 33904564 DOI: 10.1039/d1ob00580d] [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
While water clusters play an essential role in the stability of biological structures, their ability to stabilize synthetic oligomers is less understood. We have synthesized a heptameric sheet-like aromatic oligoamide foldamer with ferrocene as turn unit. It shows strong interactions with water in the solid state and in solution. The water binding limits the fluxional processes resulting from the flexible ferrocene unit, highlighting the importance of such interactions for conformational studies on this class of molecule.
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Affiliation(s)
- Ya-Zhou Liu
- Institute of Condensed Matter and Nanosciences, Université catholique de Louvain, Place Louis Pasteur 1, Louvain-la-Neuve, 1348, Belgium.
| | - Xiao Mu
- Institute of Condensed Matter and Nanosciences, Université catholique de Louvain, Place Louis Pasteur 1, Louvain-la-Neuve, 1348, Belgium.
| | - Cheih-Kai Chan
- Institute of Chemistry, Academia Sinica, Taipei, 115, Taiwan
| | - Koen Robeyns
- Institute of Condensed Matter and Nanosciences, Université catholique de Louvain, Place Louis Pasteur 1, Louvain-la-Neuve, 1348, Belgium.
| | | | - Michael L Singleton
- Institute of Condensed Matter and Nanosciences, Université catholique de Louvain, Place Louis Pasteur 1, Louvain-la-Neuve, 1348, Belgium.
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Liu YZ, Wang H, Chan CK, Mu X, Robeyns K, Wang CC, Singleton ML. Structure-Dependent Guest Recognition with Flexible Ferrocene-Based Aromatic Oligoamide β-Sheet Mimics. Chemistry 2020; 26:181-185. [PMID: 31691432 DOI: 10.1002/chem.201904719] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Indexed: 12/27/2022]
Abstract
A series of aromatic oligoamides incorporating an inherently flexible ferrocene dicarboxylic acid unit was synthesized. Solid state, solution, and computational studies on these systems indicated that the aromatic strands can adopt a syn parallel stacked conformation. This results in modular β-sheet-like molecular clefts that display structure-dependent recognition of small polar molecules. NMR and theoretical studies of the host-guest interaction support an in cleft binding mode and allowed the selectivity of the oligomers to be rationalized on the basis of minor changes in functional-group presentation on the edge of the aromatic strands.
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Affiliation(s)
- Ya-Zhou Liu
- Institute of Condensed Matter and Nanosciences, Université catholique de Louvain, Place Louis Pasteur 1, Louvain-la-Neuve, 1348, Belgium
| | - Hu Wang
- Institute of Condensed Matter and Nanosciences, Université catholique de Louvain, Place Louis Pasteur 1, Louvain-la-Neuve, 1348, Belgium
| | - Chieh-Kai Chan
- Institute of Chemistry, Academia Sinica, Taipei, 115, Taiwan
| | - Xiao Mu
- Institute of Condensed Matter and Nanosciences, Université catholique de Louvain, Place Louis Pasteur 1, Louvain-la-Neuve, 1348, Belgium
| | - Koen Robeyns
- Institute of Condensed Matter and Nanosciences, Université catholique de Louvain, Place Louis Pasteur 1, Louvain-la-Neuve, 1348, Belgium
| | | | - Michael L Singleton
- Institute of Condensed Matter and Nanosciences, Université catholique de Louvain, Place Louis Pasteur 1, Louvain-la-Neuve, 1348, Belgium
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Atcher J, Nagai A, Mayer P, Maurizot V, Tanatani A, Huc I. Aromatic β-sheet foldamers based on tertiary squaramides. Chem Commun (Camb) 2019; 55:10392-10395. [DOI: 10.1039/c9cc04849a] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Suitably substituted aryl-methyl tertiary squaramides are convenient and efficient at promoting hairpin turns in aromatic amide sequences.
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Affiliation(s)
- Joan Atcher
- Department of Pharmacy and Center for Integrated Protein Science
- Ludwig-Maximilians-Universität
- Germany
- CBMN (UMR5248)
- Université de Bordeaux-CNRS-IPB
| | - Aki Nagai
- CBMN (UMR5248)
- Université de Bordeaux-CNRS-IPB
- Institut Européen de Chimie et Biologie
- 33600 Pessac
- France
| | - Peter Mayer
- Department of Chemistry
- Ludwig-Maximilians-Universität
- Germany
| | - Victor Maurizot
- CBMN (UMR5248)
- Université de Bordeaux-CNRS-IPB
- Institut Européen de Chimie et Biologie
- 33600 Pessac
- France
| | - Aya Tanatani
- Department of Chemistry
- Faculty of Science
- Ochnomizu University
- Tokyo 112-8610
- Japan
| | - Ivan Huc
- Department of Pharmacy and Center for Integrated Protein Science
- Ludwig-Maximilians-Universität
- Germany
- CBMN (UMR5248)
- Université de Bordeaux-CNRS-IPB
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Fukumaru T, Saegusa Y, Fujigaya T, Nakashima N. Fabrication of Poly(p-phenylenebenzobisoxazole) Film Using a Soluble Poly(o-alkoxyphenylamide) as the Precursor. Macromolecules 2014. [DOI: 10.1021/ma4024526] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Takahiro Fukumaru
- Department of Applied Chemistry, Graduate
School of Engineering, Kyushu University, 744 Motooka Nishi-ku, Fukuoka 819-0395, Japan
| | - Yusuke Saegusa
- Department of Applied Chemistry, Graduate
School of Engineering, Kyushu University, 744 Motooka Nishi-ku, Fukuoka 819-0395, Japan
| | - Tsuyohiko Fujigaya
- Department of Applied Chemistry, Graduate
School of Engineering, Kyushu University, 744 Motooka Nishi-ku, Fukuoka 819-0395, Japan
- International Institute
for Carbon-Neutral Energy Research (WPI-I2CNER), Kyushu University, 744 Motooka Nishi-ku, Fukuoka 819-0395, Japan
| | - Naotoshi Nakashima
- Department of Applied Chemistry, Graduate
School of Engineering, Kyushu University, 744 Motooka Nishi-ku, Fukuoka 819-0395, Japan
- International Institute
for Carbon-Neutral Energy Research (WPI-I2CNER), Kyushu University, 744 Motooka Nishi-ku, Fukuoka 819-0395, Japan
- JST-CREST, 5 Sanbancho, Chiyoda-ku, Tokyo 102-0075, Japan
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Sebaoun L, Maurizot V, Granier T, Kauffmann B, Huc I. Aromatic Oligoamide β-Sheet Foldamers. J Am Chem Soc 2014; 136:2168-74. [DOI: 10.1021/ja412729s] [Citation(s) in RCA: 74] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Laure Sebaoun
- Université de Bordeaux, CBMN (UMR 5248), Institut Européen
de Chimie Biologie, 2 rue Escarpit, 33600 Pessac, France
- CNRS, CBMN
(UMR 5248), France
| | - Victor Maurizot
- Université de Bordeaux, CBMN (UMR 5248), Institut Européen
de Chimie Biologie, 2 rue Escarpit, 33600 Pessac, France
- CNRS, CBMN
(UMR 5248), France
| | - Thierry Granier
- Université de Bordeaux, CBMN (UMR 5248), Institut Européen
de Chimie Biologie, 2 rue Escarpit, 33600 Pessac, France
- CNRS, CBMN
(UMR 5248), France
| | - Brice Kauffmann
- Université de Bordeaux, Institut Européen de Chimie Biologie
(UMS 3033/US 001), 2 rue Escarpit, 33600 Pessac, France
- CNRS, Institut
Européen de Chimie Biologie (UMS 3033), 33600 Pessac, France
- INSERM, Institut Européen de Chimie Biologie (US 001), 33600 Pessac,
France
| | - Ivan Huc
- Université de Bordeaux, CBMN (UMR 5248), Institut Européen
de Chimie Biologie, 2 rue Escarpit, 33600 Pessac, France
- CNRS, CBMN
(UMR 5248), France
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Lipophilic thioguanosine: An anion receptor for cesium fluoride. J Fluor Chem 2013. [DOI: 10.1016/j.jfluchem.2013.02.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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