1
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He JZ, Lu Y, Jain N, Churchill DG, Wong LS. Evaluation of Fluorescence-Based Screening Assays for the Detection and Quantification of Silyl Hydrolase Activity. ACS OMEGA 2024; 9:29939-29946. [PMID: 39005827 PMCID: PMC11238280 DOI: 10.1021/acsomega.4c05409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/10/2024] [Accepted: 06/17/2024] [Indexed: 07/16/2024]
Abstract
This study reports the development of fluorometric assays for the detection and quantification of silyl hydrolase activity using silicatein as a model enzyme. These assays employed a series of organosilane substrates containing either mycophenolate or umbelliferone moieties, which become fluorescent upon hydrolysis of a scissile Si-O bond. Among these substrates, the mycophenolate-derived molecule MycoF, emerged as the most promising candidate due to its relative stability in aqueous media, which resulted in good differentiation between the enzyme-catalyzed and uncatalyzed background hydrolysis. The utility of MycoF was also demonstrated in the detection of enzyme activity in cell lysates and was found to be capable of qualitative identification of positive "hit" candidates in a high-throughput format. These fluorogenic substrates were also suitable for use in quantitative kinetic assays, as demonstrated by the acquisition of their Michaelis-Menten parameters.
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Affiliation(s)
- Jason Z He
- Manchester Institute of Biotechnology, The University of Manchester, 131 Princess Street, Manchester M1 7DN, U.K
- Department of Chemistry, The University of Manchester, Oxford Road, Manchester M13 9PL, U.K
| | - Yuqing Lu
- Manchester Institute of Biotechnology, The University of Manchester, 131 Princess Street, Manchester M1 7DN, U.K
- Department of Chemistry, The University of Manchester, Oxford Road, Manchester M13 9PL, U.K
| | - Neha Jain
- Department of Chemistry, Korea Advanced Institute of Science and Technology, Daejeon 34141, Republic of Korea
| | - David G Churchill
- Department of Chemistry, Korea Advanced Institute of Science and Technology, Daejeon 34141, Republic of Korea
| | - Lu Shin Wong
- Manchester Institute of Biotechnology, The University of Manchester, 131 Princess Street, Manchester M1 7DN, U.K
- Department of Chemistry, The University of Manchester, Oxford Road, Manchester M13 9PL, U.K
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2
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Li WH, Su JY, Zhang BD, Zhao L, Zhuo SH, Wang TY, Hu HG, Li YM. Myeloid Cell-Triggered In Situ Cell Engineering for Robust Vaccine-Based Cancer Treatment. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2308155. [PMID: 38295870 DOI: 10.1002/adma.202308155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Revised: 11/27/2023] [Indexed: 02/08/2024]
Abstract
Following the success of the dendritic cell (DC) vaccine, the cell-based tumor vaccine shows its promise as a vaccination strategy. Except for DC cells, targeting other immune cells, especially myeloid cells, is expected to address currently unmet clinical needs (e.g., tumor types, safety issues such as cytokine storms, and therapeutic benefits). Here, it is shown that an in situ injected macroporous myeloid cell adoptive scaffold (MAS) not only actively delivers antigens (Ags) that are triggered by scaffold-infiltrating cell surface thiol groups but also releases granulocyte-macrophage colony-stimulating factor and other adjuvant combos. Consequently, this promotes cell differentiation, activation, and migration from the produced monocyte and DC vaccines (MASVax) to stimulate antitumor T-cell immunity. Neoantigen-based MASVax combined with immune checkpoint blockade induces rejection of established tumors and long-term immune protection. The combined depletion of immunosuppressive myeloid cells further enhances the efficacy of MASVax, indicating the potential of myeloid cell-based therapies for immune enhancement and normalization treatment of cancer.
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Affiliation(s)
- Wen-Hao Li
- Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing, 100084, China
| | - Jing-Yun Su
- Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing, 100084, China
| | - Bo-Dou Zhang
- Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing, 100084, China
| | - Lang Zhao
- Beijing Institute for Brain Disorders, Beijing, 100069, China
| | - Shao-Hua Zhuo
- Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing, 100084, China
| | - Tian-Yang Wang
- Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing, 100084, China
| | - Hong-Guo Hu
- Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing, 100084, China
| | - Yan-Mei Li
- Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing, 100084, China
- Beijing Institute for Brain Disorders, Beijing, 100069, China
- Center for Synthetic and Systems Biology, Tsinghua University, Beijing, 100084, China
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3
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Lin J, Graziotto ME, Lay PA, New EJ. A Bimodal Fluorescence-Raman Probe for Cellular Imaging. Cells 2021; 10:cells10071699. [PMID: 34359866 PMCID: PMC8303253 DOI: 10.3390/cells10071699] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Revised: 06/30/2021] [Accepted: 07/02/2021] [Indexed: 11/24/2022] Open
Abstract
Biochemical changes in specific organelles underpin cellular function, and studying these changes is crucial to understand health and disease. Fluorescent probes have become important biosensing and imaging tools as they can be targeted to specific organelles and can detect changes in their chemical environment. However, the sensing capacity of fluorescent probes is highly specific and is often limited to a single analyte of interest. A novel approach to imaging organelles is to combine fluorescent sensors with vibrational spectroscopic imaging techniques; the latter provides a comprehensive map of the relative biochemical distributions throughout the cell to gain a more complete picture of the biochemistry of organelles. We have developed NpCN1, a bimodal fluorescence-Raman probe targeted to the lipid droplets, incorporating a nitrile as a Raman tag. NpCN1 was successfully used to image lipid droplets in 3T3-L1 cells in both fluorescence and Raman modalities, reporting on the chemical composition and distribution of the lipid droplets in the cells.
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Affiliation(s)
- Jiarun Lin
- School of Chemistry, The University of Sydney, Sydney, NSW 2006, Australia; (J.L.); (M.E.G.)
- The University of Sydney Nano Institute (Sydney Nano), The University of Sydney, Sydney, NSW 2006, Australia
| | - Marcus E. Graziotto
- School of Chemistry, The University of Sydney, Sydney, NSW 2006, Australia; (J.L.); (M.E.G.)
| | - Peter A. Lay
- School of Chemistry, The University of Sydney, Sydney, NSW 2006, Australia; (J.L.); (M.E.G.)
- The University of Sydney Nano Institute (Sydney Nano), The University of Sydney, Sydney, NSW 2006, Australia
- Sydney Analytical, The University of Sydney, Sydney, NSW 2006, Australia
- Correspondence: (P.A.L.); (E.J.N.); Tel.: +61-2-9351-4269 (P.A.L.); + 61-2-9351-3329 (E.J.N.)
| | - Elizabeth J. New
- School of Chemistry, The University of Sydney, Sydney, NSW 2006, Australia; (J.L.); (M.E.G.)
- The University of Sydney Nano Institute (Sydney Nano), The University of Sydney, Sydney, NSW 2006, Australia
- Australian Research Council Centre of Excellence for Innovations in Peptide and Protein Science, The University of Sydney, Sydney, NSW 2006, Australia
- Correspondence: (P.A.L.); (E.J.N.); Tel.: +61-2-9351-4269 (P.A.L.); + 61-2-9351-3329 (E.J.N.)
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4
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Aganda KCC, Hong B, Lee A. Visible‐Light‐Promoted Switchable Synthesis of C‐3‐Functionalized Quinoxalin‐2(1
H
)‐ones. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202001396] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Kim Christopher C. Aganda
- Department of Energy Science and Technology Myongji University Yongin 17058 Republic of Korea
- Department of Chemistry Jeonbuk National University Jeonju 54896 Republic of Korea
| | - Boseok Hong
- Department of Chemistry Myongji University Yongin 17058 Republic of Korea
| | - Anna Lee
- Department of Chemistry Jeonbuk National University Jeonju 54896 Republic of Korea
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5
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Dare EO, Vendrell‐Criado V, Consuelo Jiménez M, Pérez‐Ruiz R, Díaz Díaz D. Fluorescent-Labeled Octasilsesquioxane Nanohybrids as Potential Materials for Latent Fingerprinting Detection. Chemistry 2020; 26:13142-13146. [PMID: 32460420 PMCID: PMC7692944 DOI: 10.1002/chem.202001908] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2020] [Revised: 05/22/2020] [Indexed: 11/10/2022]
Abstract
The recent demand for fluorescent-labeled materials (FLMs) in forensic security concepts such as latent fingerprints (LFs) that encode information for anti-counterfeiting and encryption of confidential data makes necessary the development of building new and innovative materials. Here, novel FLMs based on polyhedral oligomeric silsesquioxanes (POSS) functionalized with fluorophores via "click" reactions have been successfully synthesized and fully characterized. A comprehensive study of their photophysical properties has displayed large Stokes's shift together with good photostability in all cases, fulfilling the fundamental requisites for any legible LF detection on various surfaces. The excellent performance of the hetero-bifunctional FLM in the visualization of LF is emphasized by their legibility, selectivity, sensitivity and temporal photostability. In this study, development mechanisms have been proposed and the overall concept constitute a novel approach for vis-à-vis forensic investigations to trace an individual's identity.
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Affiliation(s)
- Enock O. Dare
- Institute of Organic ChemistryUniversity of RegensburgUniversitaetsstr. 3193040RegensburgGermany
- Department of ChemistryFederal University of AgricultureP.M. B2240AbeokutaNigeria
| | | | - M. Consuelo Jiménez
- Departamento de QuímicaUniversitat Politècnica de ValènciaCamino de Vera, s/n46022ValenciaSpain
| | - Raúl Pérez‐Ruiz
- Departamento de QuímicaUniversitat Politècnica de ValènciaCamino de Vera, s/n46022ValenciaSpain
| | - David Díaz Díaz
- Institute of Organic ChemistryUniversity of RegensburgUniversitaetsstr. 3193040RegensburgGermany
- Departamento de Química OrgánicaUniversidad de La LagunaAvda. Astrofísico Francisco Sánchez38206La LagunaTenerifeSpain
- Instituto Universitario de Bio-Orgánica Antonio GonzálezUniversidad de La LagunaAvda. Astrofísico Francisco Sánchez 238206La LagunaTenerifeSpain
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6
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Lossouarn A, Renault K, Bailly L, Frisby A, Le Nahenec-Martel P, Renard PY, Sabot C. Maleimide-based metal-free ligation with dienes: a comparative study. Org Biomol Chem 2020; 18:3874-3887. [DOI: 10.1039/d0ob00403k] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Maleimide-based Diels–Alder strategies for bioconjugation are compared in terms of dienes accessibility and stability, reactions rates, as well as products isolation and stability.
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Affiliation(s)
| | | | | | - Axel Frisby
- Normandie Univ
- CNRS
- UNIROUEN
- INSA Rouen
- 76000 Rouen
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7
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Nascimento JSD, Núñez WER, Santos VHPD, Aleu J, Cunha S, Silva EDO. Mapping the Biotransformation of Coumarins through Filamentous Fungi. Molecules 2019; 24:molecules24193531. [PMID: 31569547 PMCID: PMC6803992 DOI: 10.3390/molecules24193531] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2019] [Revised: 09/24/2019] [Accepted: 09/27/2019] [Indexed: 11/16/2022] Open
Abstract
Natural coumarins are present in remarkable amounts as secondary metabolites in edible and medicinal plants, where they display interesting bioactivities. Considering the wide enzymatic arsenal of filamentous fungi, studies on the biotransformation of coumarins using these microorganisms have great importance in green chemical derivatization. Several reports on the biotransformation of coumarins using fungi have highlighted the achievement of chemical analogs with high selectivity by using mild and ecofriendly conditions. Prompted by the enormous pharmacological, alimentary, and chemical interest in coumarin-like compounds, this study evaluated the biotransformation of nine coumarin scaffolds using Cunninghamella elegans ATCC 10028b and Aspergillus brasiliensis ATCC 16404. The chemical reactions which were catalyzed by the microorganisms were highly selective. Among the nine studied coumarins, only two of them were biotransformed. One of the coumarins, 7-hydroxy-2,3-dihydrocyclopenta[c]chromen-4(1H)-one, was biotransformed into the new 7,9-dihydroxy-2,3-dihydrocyclopenta[c]chromen-4(1H)-one, which was generated by selective hydroxylation in an unactivated carbon. Our results highlight some chemical features of coumarin cores that are important to biotransformation using filamentous fungi.
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Affiliation(s)
- Jainara Santos do Nascimento
- Organic Chemistry Department, Chemistry Institute, Federal University of Bahia, Salvador 40170-115, Bahia, Brazil.
| | - Wilson Elias Rozo Núñez
- Organic Chemistry Department, Chemistry Institute, Federal University of Bahia, Salvador 40170-115, Bahia, Brazil.
| | | | - Josefina Aleu
- Organic Chemistry Department, Faculty of Sciences, University of Cádiz, 11510 Puerto Real, Cádiz, Spain.
| | - Sílvio Cunha
- Organic Chemistry Department, Chemistry Institute, Federal University of Bahia, Salvador 40170-115, Bahia, Brazil.
| | - Eliane de Oliveira Silva
- Organic Chemistry Department, Chemistry Institute, Federal University of Bahia, Salvador 40170-115, Bahia, Brazil.
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8
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Meco-Navas A, Ebiloma GU, Martín-Domínguez A, Martínez-Benayas I, Cueto-Díaz EJ, Alhejely AS, Balogun EO, Saito M, Matsui M, Arai N, Shiba T, Harada S, de Koning HP, Dardonville C. SAR of 4-Alkoxybenzoic Acid Inhibitors of the Trypanosome Alternative Oxidase. ACS Med Chem Lett 2018; 9:923-928. [PMID: 30258542 DOI: 10.1021/acsmedchemlett.8b00282] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2018] [Accepted: 07/31/2018] [Indexed: 11/30/2022] Open
Abstract
The SAR of 4-hydroxybenzaldehyde inhibitors of the trypanosome alternative oxidase (TAO), a critical enzyme for the respiration of bloodstream forms of trypanosomes, was investigated. Replacing the aldehyde group with a methyl ester resulted in a 10-fold increase in TAO inhibition and activity against T. brucei. Remarkably, two analogues containing the 2-hydroxy-6-methyl scaffold (9e and 16e) displayed single digit nanomolar TAO inhibition, which constitute the most potent 4-alkoxybenzoic acid derivatives described to date. 9e was 50-times more potent against TAO and 10-times more active against T. brucei compared to its benzaldehyde analogue 1. The farnesyl derivative 16e was as potent a TAO inhibitor as ascofuranone with IC50 = 3.1 nM. Similar to ascofuranone derivatives, the 2-hydroxy and 6-methyl groups seemed essential for low nanomolar TAO inhibition of acid derivatives, suggesting analogous binding interactions with the TAO active site.
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Affiliation(s)
- Alejandro Meco-Navas
- Instituto de Química Médica, IQM-CSIC, Juan de la Cierva 3, E-28006 Madrid, Spain
| | - Godwin U. Ebiloma
- Institute of Infection, Immunity and Inflammation, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow G12 8QQ, United Kingdom
- Department of Applied Biology, Kyoto Institute of Technology, Kyoto 606-8585, Japan
| | - Ana Martín-Domínguez
- Instituto de Química Médica, IQM-CSIC, Juan de la Cierva 3, E-28006 Madrid, Spain
| | | | | | - Amani Saud Alhejely
- Institute of Infection, Immunity and Inflammation, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow G12 8QQ, United Kingdom
| | | | - Machi Saito
- Department of Applied Biology, Kyoto Institute of Technology, Kyoto 606-8585, Japan
| | - Miho Matsui
- Department of Applied Biology, Kyoto Institute of Technology, Kyoto 606-8585, Japan
| | - Natsumi Arai
- Department of Applied Biology, Kyoto Institute of Technology, Kyoto 606-8585, Japan
| | - Tomoo Shiba
- Department of Applied Biology, Kyoto Institute of Technology, Kyoto 606-8585, Japan
| | - Shigeharu Harada
- Department of Applied Biology, Kyoto Institute of Technology, Kyoto 606-8585, Japan
| | - Harry P. de Koning
- Institute of Infection, Immunity and Inflammation, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow G12 8QQ, United Kingdom
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9
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Renault K, Fredy JW, Renard PY, Sabot C. Covalent Modification of Biomolecules through Maleimide-Based Labeling Strategies. Bioconjug Chem 2018; 29:2497-2513. [PMID: 29954169 DOI: 10.1021/acs.bioconjchem.8b00252] [Citation(s) in RCA: 115] [Impact Index Per Article: 19.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Since their first use in bioconjugation more than 50 years ago, maleimides have become privileged chemical partners for the site-selective modification of proteins via thio-Michael addition of biothiols and, to a lesser extent, via Diels-Alder (DA) reactions with biocompatible dienes. Prominent examples include immunotoxins and marketed maleimide-based antibody-drug conjugates (ADCs) such as Adcetris, which are used in cancer therapies. Among the key factors in the success of these groups is the availability of several maleimides that can be N-functionalized by fluorophores, affinity tags, spin labels, and pharmacophores, as well as their unique reactivities in terms of selectivity and kinetics. However, maleimide conjugate reactions have long been considered irreversible, and only recently have systematic studies regarding their reversibility and stability toward hydrolysis been reported. This review provides an overview of the diverse applications for maleimides in bioconjugation, highlighting their strengths and weaknesses, which are being overcome by recent strategies. Finally, the fluorescence quenching ability of maleimides was leveraged for the preparation of fluorogenic probes, which are mainly used for the specific detection of thiol analytes. A summary of the reported structures, their photophysical features, and their relative efficiencies is discussed in the last part of the review.
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Affiliation(s)
- Kévin Renault
- Normandie Univ, CNRS, UNIROUEN, INSA Rouen, COBRA (UMR 6014) , 76000 Rouen , France
| | - Jean Wilfried Fredy
- Normandie Univ, CNRS, UNIROUEN, INSA Rouen, COBRA (UMR 6014) , 76000 Rouen , France
| | - Pierre-Yves Renard
- Normandie Univ, CNRS, UNIROUEN, INSA Rouen, COBRA (UMR 6014) , 76000 Rouen , France
| | - Cyrille Sabot
- Normandie Univ, CNRS, UNIROUEN, INSA Rouen, COBRA (UMR 6014) , 76000 Rouen , France
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10
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Renault K, Renard PY, Sabot C. Photophysical properties of quinoxalin-2(1H)-ones: application in the preparation of an azide-based fluorogenic probe for the detection of hydrogen sulfide. NEW J CHEM 2017. [DOI: 10.1039/c7nj01893b] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Fluorescent quinoxalinones with good quantum yields were obtained and used in the preparation of a probe for the detection of H2S.
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Affiliation(s)
- Kévin Renault
- Normandie Univ
- CNRS
- UNIROUEN
- INSA Rouen
- COBRA (UMR 6014)
| | | | - Cyrille Sabot
- Normandie Univ
- CNRS
- UNIROUEN
- INSA Rouen
- COBRA (UMR 6014)
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11
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Renault K, Jouanno LA, Lizzul-Jurse A, Renard PY, Sabot C. Fluorogenic Behaviour of the Hetero-Diels-Alder Ligation of 5-Alkoxyoxazoles with Maleimides and their Applications. Chemistry 2016; 22:18522-18531. [DOI: 10.1002/chem.201603617] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2016] [Indexed: 12/21/2022]
Affiliation(s)
- Kévin Renault
- Normandie University; CNRS, UNIROUEN, INSA Rouen; COBRA (UMR 6014); 76000 Rouen France
| | - Laurie-Anne Jouanno
- Department of Chemistry and Biomolecular Sciences; University of Ottawa; 10 Marie Curie Ottawa Ontario K1N 6N5 Canada
| | - Antoine Lizzul-Jurse
- Normandie University; CNRS, UNIROUEN, INSA Rouen; COBRA (UMR 6014); 76000 Rouen France
| | - Pierre-Yves Renard
- Normandie University; CNRS, UNIROUEN, INSA Rouen; COBRA (UMR 6014); 76000 Rouen France
| | - Cyrille Sabot
- Normandie University; CNRS, UNIROUEN, INSA Rouen; COBRA (UMR 6014); 76000 Rouen France
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