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Campos RB, Capato LA, Soares PM, Tantillo DJ, Orth ES. Thio-Induced Organophosphate Breakdown Promoted by Methimazole: an Experimental and Theoretical Study. Chempluschem 2024; 89:e202300756. [PMID: 38412020 DOI: 10.1002/cplu.202300756] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2023] [Revised: 02/27/2024] [Accepted: 02/27/2024] [Indexed: 02/28/2024]
Abstract
Investigating the reactivity of small nucleophilic scaffolds is a strategic approach for the design of new catalysts aiming at effective detoxification processes of organophosphorus compounds. The drug methimazole (MMZ) is an interesting candidate featuring two non-equivalent nucleophilic centers. Herein, phosphoryl transfer reactions mediated by MMZ were assessed by means of spectrophotometric kinetic studies, mass spectrometry (MS) analyses, and density functional theory (DFT) calculations using the multi-electrophilic compound O,O-diethyl 2,4-dinitrophenyl phosphate (DEDNPP). MMZ anion acts primarily as an S-nucleophile, exhibiting a nucleophilic activity comparable to that of certain oximes featuring alpha-effect. Selective nucleophilic aromatic substitution was observed, consistent with the DFT prediction of a low energy barrier. Overall, the results bring important advances regarding the mechanistic understanding of nucleophilic dephosphorylation reactions, which comprises a strategic tool for neutralizing toxic organophosphates, hence promoting chemical security.
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Affiliation(s)
- Renan B Campos
- Departamento Acadêmico de Química e Biologia, Universidade Tecnológica Federal do Paraná, Rua Deputado Heitor de Alencar Furtado, 5000, 81280-340, Curitiba, Brazil
| | - Lucas A Capato
- Departamento Acadêmico de Química e Biologia, Universidade Tecnológica Federal do Paraná, Rua Deputado Heitor de Alencar Furtado, 5000, 81280-340, Curitiba, Brazil
| | - Patrícia M Soares
- Chemistry Departament, Universidade Federal do Paraná (UFPR), CP 19081, CEP 81531-990, Curitiba, PR, Brazil
| | - Dean J Tantillo
- Department of Chemistry, University of California-Davis, Davis, California, 95616, United States
| | - Elisa S Orth
- Chemistry Departament, Universidade Federal do Paraná (UFPR), CP 19081, CEP 81531-990, Curitiba, PR, Brazil
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2
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Onyido I, Obumselu OF, Egwuatu CI, Okoye NH. Solvent and solvation effects on reactivities and mechanisms of phospho group transfers from phosphate and phosphinate esters to nucleophiles. Front Chem 2023; 11:1176746. [PMID: 37179775 PMCID: PMC10172589 DOI: 10.3389/fchem.2023.1176746] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Accepted: 04/03/2023] [Indexed: 05/15/2023] Open
Abstract
Organophosphorus esters fulfil many industrial, agricultural, and household roles. Nature has deployed phosphates and their related anhydrides as energy carriers and reservoirs, as constituents of genetic materials in the form of DNA and RNA, and as intermediates in key biochemical conversions. The transfer of the phosphoryl (PO3) group is thus a ubiquitous biological process that is involved in a variety of transformations at the cellular level such as bioenergy and signals transductions. Significant attention has been paid in the last seven decades to understanding the mechanisms of uncatalyzed (solution) chemistry of the phospho group transfer because of the notion that enzymes convert the dissociative transition state structures in the uncatalyzed reactions into associative ones in the biological processes. In this regard, it has also been proposed that the rate enhancements enacted by enzymes result from the desolvation of the ground state in the hydrophobic active site environments, although theoretical calculations seem to disagree with this position. As a result, some attention has been paid to the study of the effects of solvent change, from water to less polar solvents, in uncatalyzed phospho transfer reactions. Such changes have consequences on the stabilities of the ground and the transition states of reactions which affect reactivities and, sometimes, the mechanisms of reactions. This review seeks to collate and evaluate what is known about solvent effects in this domain, especially their effects on rates of reactions of different classes of organophosphorus esters. The outcome of this exercise shows that a systematized study of solvent effects needs to be undertaken to fully understand the physical organic chemistry of the transfer of phosphates and related molecules from aqueous to substantially hydrophobic environments, since significant knowledge gaps exist.
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Takarada WH, Ferreira JG, Riegel-Vidotti IC, Orth ES. Functionalization of gum arabic derivatives for catalytic neutralization of organophosphates. REACT FUNCT POLYM 2022. [DOI: 10.1016/j.reactfunctpolym.2022.105422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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4
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Luiz E, Farias G, Bortoluzzi AJ, Neves A, de Melo Mattos LM, Pereira MD, Xavier FR, Peralta RA. Hydrolytic activity of new bioinspired Mn IIIMn II and Fe IIIMn II complexes as mimetics of PAPs: Biological and environmental interest. J Inorg Biochem 2022; 236:111965. [PMID: 35988388 DOI: 10.1016/j.jinorgbio.2022.111965] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Revised: 08/01/2022] [Accepted: 08/10/2022] [Indexed: 12/15/2022]
Abstract
Coordination compounds that mimic Purple Acid Phosphatases (PAPs) have drawn attention in the bioinorganic field due to their capacity to cleave phosphodiester bonds. However, their catalytic activity upon phosphate triesters is still unexplored. Thus, we report the synthesis and characterization of two binuclear complexes, [MnIIMnIII(L1)(OAc)2]BF4 (1) and [MnIIFeIII(L1)(OAc)2]BF4 (2) (H2L1 = 2-[N,N-bis-(2- pyridilmethyl)aminomethyl]-4-methyl-6-[N-(2-hydroxy-3-formyl-5-methylbenzyl)-N-(2-pyridylmethyl)aminomethyl]phenol), their hydrolytic activity and antioxidant potential. The complexes were fully characterized, including the X-Ray diffraction (XRD) of 1. Density functional theory (DFT) calculations were performed to better understand their electronic and structural properties and phosphate conjugates. The catalytic activity was analyzed for two model substrates, a diester (BDNPP) and a triester phosphate (DEDNPP). The results suggest enhancement of the hydrolysis reaction by 170 to 1500 times, depending on the substrate and complex. It was possible to accompany the catalytic reaction of DEDNPP hydrolysis by phosphorus nuclear magnetic resonance (31P NMR), showing that both 1 and 2 are efficient catalysts. Moreover, we also addressed that 1 and 2 present a relevant antioxidant potential, protecting the yeast Saccharomyces cerevisiae, used as eukaryotic model of study, against the exposure of cells to acute oxidative stress.
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Affiliation(s)
- Edinara Luiz
- Departamento de Química, Universidade Federal de Santa Catarina, Florianópolis, Santa Catarina 88040-900, Brazil
| | - Giliandro Farias
- Departamento de Química, Universidade Federal de Santa Catarina, Florianópolis, Santa Catarina 88040-900, Brazil
| | - Adailton J Bortoluzzi
- Departamento de Química, Universidade Federal de Santa Catarina, Florianópolis, Santa Catarina 88040-900, Brazil
| | - Ademir Neves
- Departamento de Química, Universidade Federal de Santa Catarina, Florianópolis, Santa Catarina 88040-900, Brazil
| | - Larissa Maura de Melo Mattos
- Instituto de Química, Departamento de Bioquímica, Universidade Federal do Rio de Janeiro, 21941-909, Brazil; Rede Micologia RJ - FAPERJ
| | - Marcos Dias Pereira
- Instituto de Química, Departamento de Bioquímica, Universidade Federal do Rio de Janeiro, 21941-909, Brazil; Rede Micologia RJ - FAPERJ
| | - Fernando R Xavier
- Departamento de Química, Universidade do Estado de Santa Catarina, Joinville, Santa Catarina 89219-710, Brazil.
| | - Rosely A Peralta
- Departamento de Química, Universidade Federal de Santa Catarina, Florianópolis, Santa Catarina 88040-900, Brazil.
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An efficient bioinspired functional micellar nanoreactor for dephosphorylation reactions. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.119348] [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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Ferreira JGL, Takarada WH, Orth ES. Waste-derived biocatalysts for pesticide degradation. JOURNAL OF HAZARDOUS MATERIALS 2022; 427:127885. [PMID: 34872781 DOI: 10.1016/j.jhazmat.2021.127885] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Revised: 11/04/2021] [Accepted: 11/20/2021] [Indexed: 06/13/2023]
Abstract
A green approach to produce a cellulose-derived biocatalyst containing hydroxamic acids targeted for the neutralization of toxic organophosphates is shown. The cellulose source, rice husk, is among the largest agricultural waste worldwide and can be strategically functionalized, broadening its sustainable application. Herein, rice husk was oxidized in different degrees, leading to carboxylic acid-based colloidal and solid samples. These were functionalized with hydroxamic acids via amide bonds and fully characterized. The hydroxamic acid derived biocatalysts were evaluated in the cleavage of toxic organophosphates, including the pesticide Paraoxon. Catalytic increments reached up to 107-fold compared to non-catalyzed reactions. Most impressively, the materials showed P atom-selectivity and recyclability features. This guarantees only one reaction pathway that leads to less toxic products, hereby, detoxifies. Overall, highly sustainable catalysts are presented, that benefits from waste source, its green functionalization and is successfully employed for the promotion of chemical security of threatening organophosphates. To the best of our knowledge, this is the first report of a hydroxamate-derived rice husk (selectively modified at the C6 of cellulose) and its application in organophosphates reaction.
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Affiliation(s)
- José G L Ferreira
- Department of Chemistry, Universidade Federal do Paraná (UFPR), CEP 81531-980, Curitiba CP 19032, PR, Brazil
| | - Willian H Takarada
- Department of Chemistry, Universidade Federal do Paraná (UFPR), CEP 81531-980, Curitiba CP 19032, PR, Brazil
| | - Elisa S Orth
- Department of Chemistry, Universidade Federal do Paraná (UFPR), CEP 81531-980, Curitiba CP 19032, PR, Brazil.
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Jacobs AK, Menezes LRA, Fernandes JM, Kosteczka GL, Sassaki GL, Campos RB. Mechanistic insights into the amidolysis of a phosphate triester: the antagonistic role of water. Org Biomol Chem 2022; 20:2462-2466. [PMID: 35258067 DOI: 10.1039/d2ob00180b] [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
The breakdown of O,O-diethyl-2,4-dinitrophenyl phosphate in formamide (FMD) solutions is assessed using kinetic studies and 31P nuclear magnetic resonance (NMR) analysis. Regiospecific nucleophilic amidolysis via P-O bond cleavage is observed, leading to non-toxic diester and FMD regeneration. In the systems evaluated, water plays an antagonistic role: while it is key for the breakdown of the reaction intermediate, it inhibits the nucleophilic activity of FMD by hydrogen bonding effects.
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Affiliation(s)
- Amanda K Jacobs
- Academic Department of Chemistry and Biology, Universidade Tecnológica Federal do Paraná (UTFPR), Rua Deputado Heitor Alencar Furtado, 5000, 81.280-340, Curitiba, Paraná, Brazil.
| | - Leociley R A Menezes
- Department of Biochemistry and Molecular Biology, Universidade Federal do Paraná, Av. Cel. Francisco H. dos Santos, 100, 81.531-980, Curitiba, Paraná, Brazil
| | - Juliano M Fernandes
- Academic Department of Chemistry and Biology, Universidade Tecnológica Federal do Paraná (UTFPR), Rua Deputado Heitor Alencar Furtado, 5000, 81.280-340, Curitiba, Paraná, Brazil.
| | - Guilherme L Kosteczka
- Academic Department of Chemistry and Biology, Universidade Tecnológica Federal do Paraná (UTFPR), Rua Deputado Heitor Alencar Furtado, 5000, 81.280-340, Curitiba, Paraná, Brazil.
| | - Guilherme L Sassaki
- Department of Biochemistry and Molecular Biology, Universidade Federal do Paraná, Av. Cel. Francisco H. dos Santos, 100, 81.531-980, Curitiba, Paraná, Brazil
| | - Renan B Campos
- Academic Department of Chemistry and Biology, Universidade Tecnológica Federal do Paraná (UTFPR), Rua Deputado Heitor Alencar Furtado, 5000, 81.280-340, Curitiba, Paraná, Brazil.
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Dey N, Kulhánek J, Bureš F, Bhattacharya S. Imidazole-Functionalized Y-Shaped Push-Pull Dye for Nerve Agent Sensing as well as a Catalyst for Their Detoxification. J Org Chem 2021; 86:14663-14671. [PMID: 34648709 DOI: 10.1021/acs.joc.1c01488] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A Y-shaped push-pull dye (1) with N,N-dimethylanilino donors and a benzonitrile acceptor connected via an imidazole-based π-conjugated spacer was designed. It showed a dark yellow color in solution due to facile intramolecular charge-transfer interaction, but no fluorescence was detected, presumably due to the photo-induced electron transfer effect of the imidazole moiety. However, addition of nerve agents such as diethyl chlorophosphate (DCP, sarin mimic) and diethyl cyanophosphate (DCNP, Tabun mimic) resulted in a blue-colored fluorescence with fading of the native dark yellow color. Mechanistic studies indicated nucleophilic attack of imidazole at the phosphorus of DCP or DCNP, leading to the formation of a phosphorylated intermediate, which undergoes time-dependent hydrolysis (∼24 h) in aqueous medium. This process recovers the free probe (enzyme-like behavior) and releases a less-toxic organophosphate compound as the byproduct. The phosphorylated derivative of 1, formed during such interaction, shows a different electronic behavior, which reduces the extent of charge-transfer interaction as well as nonradiative decay and supports emissive properties. Considering the high sensitivity of 1 towards DCP and DCNP with LOD 35 and 42 ppb, we prepared easy test strips for on-site vapor-phase detection of nerve agents.
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Affiliation(s)
- Nilanjan Dey
- Department of Chemistry, Birla Institute of Technology and Science, Pilani, Telangana 500078, India
| | - Jiří Kulhánek
- Institute of Organic Chemistry and Technology, Faculty of Chemical Technology, University of Pardubice, Studentská 573, Pardubice, CZ 53210, Czech Republic
| | - Filip Bureš
- Institute of Organic Chemistry and Technology, Faculty of Chemical Technology, University of Pardubice, Studentská 573, Pardubice, CZ 53210, Czech Republic
| | - Santanu Bhattacharya
- Department of Organic Chemistry, Indian Institute of Science, Bangalore 560012, India.,School of Applied and Interdisciplinary Sciences, Indian Association for Cultivation of Science, Kolkata 700032, India
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Silva VB, Campos RB, Pavez P, Medeiros M, Orth ES. Nucleophilic Neutralization of Organophosphates: Lack of Selectivity or Plenty of Versatility? CHEM REC 2021; 21:2638-2665. [PMID: 34117695 DOI: 10.1002/tcr.202100123] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Revised: 05/17/2021] [Indexed: 12/13/2022]
Abstract
Neutralization of organophosphates is an issue of public health and safety, involving agrochemicals and chemical warfare. A promising approach is the nucleophilic neutralization, scope of this review, which focuses on the molecular nucleophiles: hydroxide, imidazole derivatives, alpha nucleophiles, amines and other nucleophiles. A reactivity mapping is given correlating the pathways and reaction efficiency with structural dependence of the nucleophile (basicity) and the organophosphate (electrophilic centers, P=O/P=S shift, leaving and non-leaving group). Reactions extremely unfavorable (>20 years) can be reduced to seconds with various nucleophiles, some which are catalytic. Although there is no universal nucleophile, a lack of selectivity in some cases accounts for plenty of versatility in other reactions. The ideal neutralization requires a solid mechanistic understanding, together with balancing factors such as milder conditions, fast process, selectivity and less toxic products.
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Affiliation(s)
- Valmir B Silva
- Department of Chemistry, Universidade Federal do Paraná, CP 19081, CEP 81531-990, Curitiba, PR, Brazil
| | - Renan B Campos
- Academic Department of Chemistry and Biology, Universidade Tecnológica Federal do Paraná, ZIP 81280-340, Curitiba, PR, Brazil
| | - Paulina Pavez
- Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Casilla 306, 6094411, Santiago, Chile
| | - Michelle Medeiros
- Department of Chemistry, Universidade Federal de Santa Catarina, CEP 88040-900, Florianópolis, SC, Brazil
| | - Elisa S Orth
- Department of Chemistry, Universidade Federal do Paraná, CP 19081, CEP 81531-990, Curitiba, PR, Brazil
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10
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Fernandes JM, Soek RN, do Nascimento TC, Menezes LRA, Sassaki GL, Campos RB. Degradation of Organophosphates Promoted by 1,2,4-Triazole Anion: Exploring Scaffolds for Efficient Catalytic Systems. J Org Chem 2021; 86:4027-4034. [DOI: 10.1021/acs.joc.0c02809] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Juliano M. Fernandes
- Academic Department of Chemistry and Biology, Federal University of Technology − Paraná, Rua Deputado Heitor de Alencar Furtado, 5000, 81280-340 Curitiba, Brazil
| | - Rafael N. Soek
- Department of Chemical Engineering, Federal University of Paraná, Av. Cel. Francisco H. dos Santos, 100, 81531-980, Curitiba, Paraná, Brazil
| | - Thalita C. do Nascimento
- Academic Department of Chemistry and Biology, Federal University of Technology − Paraná, Rua Deputado Heitor de Alencar Furtado, 5000, 81280-340 Curitiba, Brazil
| | - Leociley R. A. Menezes
- Department of Biochemistry and Molecular Biology, Federal University of Parana, Av. Cel. Francisco H. dos Santos, 100, 81531-980, Curitiba, Paraná, Brazil
| | - Guilherme L. Sassaki
- Department of Biochemistry and Molecular Biology, Federal University of Parana, Av. Cel. Francisco H. dos Santos, 100, 81531-980, Curitiba, Paraná, Brazil
| | - Renan B. Campos
- Academic Department of Chemistry and Biology, Federal University of Technology − Paraná, Rua Deputado Heitor de Alencar Furtado, 5000, 81280-340 Curitiba, Brazil
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Costa PFA, de Abreu R, Fontana AB, Fiedler HD, Kirby AJ, Quina FH, Nome F, Gerola AP. The role of hydrophobicity in supramolecular polymer/surfactant catalysts: An understandable model for enzymatic catalysis. J Colloid Interface Sci 2020; 588:456-468. [PMID: 33429342 DOI: 10.1016/j.jcis.2020.12.081] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2020] [Revised: 12/15/2020] [Accepted: 12/22/2020] [Indexed: 12/24/2022]
Abstract
Enzymes are highly significant catalysts, essential to biological systems, and a source of inspiration for the design of artificial enzymes. Although many models have been developed describing enzymatic catalysis, a deeper understanding of these biocatalysts remains a major challenge. Herein we detail the formation, characterization, performance, and catalytic mechanisms of a series of bio-inspired supramolecular polymer/surfactant complexes acting as artificial enzymes. The supramolecular complexes were characterized and exhibited exceptional catalytic efficiency for the dephosphorylation of an activated phosphate diester, the reaction rate being highly responsive to: (a) pH, (b) surfactant concentration, and (c) the length of the hydrophobic chain of the surfactant. Under optimal conditions (at pH > 8 for the more hydrophobic systems and at pre-micellar concentrations), enzyme-like rate enhancements of up to 6.0 × 109-fold over the rate of the spontaneous hydrolysis reaction in water were verified. The catalytic performance is a consequence of synergy between the hydrophobicity of the aggregates and the catalytic functionalities of the polymer and the catalytic mechanism is modulated by the nature of the hydrophobic pockets of these catalysts, changing from a general base mechanism to a nucleophilic mechanism as the hydrophobicity increases. Taken as a whole, the present results provide fundamental insights, through an understandable model, which are highly relevant to the design of novel bioinspired enzyme surrogates with multifunctional potentialities for future practical applications.
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Affiliation(s)
- Paulo F A Costa
- Department of Chemistry, Universidade Federal de Santa Catarina, Florianópolis 88040-900, SC, Brazil
| | - Rafael de Abreu
- Department of Chemistry, Universidade Federal de Santa Catarina, Florianópolis 88040-900, SC, Brazil
| | - Andressa B Fontana
- Department of Chemistry, Universidade Federal de Santa Catarina, Florianópolis 88040-900, SC, Brazil
| | - Haidi D Fiedler
- Department of Chemistry, Universidade Federal de Santa Catarina, Florianópolis 88040-900, SC, Brazil
| | - Anthony J Kirby
- Department of Chemistry, University of Cambridge, Cambridge CB2 1EW, UK
| | - Frank H Quina
- Institute of Chemistry, University of São Paulo, CEP 05508-000 São Paulo, Brazil
| | - Faruk Nome
- Department of Chemistry, Universidade Federal de Santa Catarina, Florianópolis 88040-900, SC, Brazil
| | - Adriana P Gerola
- Department of Chemistry, Universidade Federal de Santa Catarina, Florianópolis 88040-900, SC, Brazil.
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12
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Simple and highly active strontium-based catalyst for detoxification of an organophosphorus chemical warfare agent simulant. BRAZILIAN JOURNAL OF CHEMICAL ENGINEERING 2020. [DOI: 10.1007/s43153-020-00048-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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13
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Hryniewicz BM, Wolfart F, Gómez-Romero P, Orth ES, Vidotti M. Enhancement of organophosphate degradation by electroactive pyrrole and imidazole copolymers. Electrochim Acta 2020. [DOI: 10.1016/j.electacta.2020.135842] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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14
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Campos RB, Silva VB, Menezes LRA, Ocampos FMM, Fernandes JM, Barison A, Oliveira ARM, Tantillo DJ, Orth ES. Competitive Reactivity of Tautomers in the Degradation of Organophosphates by Imidazole Derivatives. Chemistry 2020; 26:5017-5026. [DOI: 10.1002/chem.201905379] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Revised: 01/21/2020] [Indexed: 11/06/2022]
Affiliation(s)
- Renan B. Campos
- Academic Department of Chemistry and BiologyUniversidade Tecnológica Federal do Paraná 81280-340 Curitiba-PR Brazil
- Department of ChemistryUniversidade Federal do Paraná, CP 19081 CEP 81531-990 Curitiba-PR Brazil
| | - Valmir B. Silva
- Department of ChemistryUniversidade Federal do Paraná, CP 19081 CEP 81531-990 Curitiba-PR Brazil
| | - Leociley R. A. Menezes
- Department of ChemistryUniversidade Federal do Paraná, CP 19081 CEP 81531-990 Curitiba-PR Brazil
| | - Fernanda M. M. Ocampos
- Department of ChemistryUniversidade Federal do Paraná, CP 19081 CEP 81531-990 Curitiba-PR Brazil
| | - Juliano M. Fernandes
- Academic Department of Chemistry and BiologyUniversidade Tecnológica Federal do Paraná 81280-340 Curitiba-PR Brazil
| | - Andersson Barison
- Department of ChemistryUniversidade Federal do Paraná, CP 19081 CEP 81531-990 Curitiba-PR Brazil
| | - Alfredo R. M. Oliveira
- Department of ChemistryUniversidade Federal do Paraná, CP 19081 CEP 81531-990 Curitiba-PR Brazil
| | - Dean J. Tantillo
- Department of ChemistryUniversity of California-Davis Davis CA 95616 USA
| | - Elisa S. Orth
- Department of ChemistryUniversidade Federal do Paraná, CP 19081 CEP 81531-990 Curitiba-PR Brazil
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Ruschel Campedelli R, Keller MH, Pinheiro G, Campos CEM, Zaramello L, Silveira de Souza B. From the Shelf to the Particle: Preparation of Highly Organic-Functionalized Magnetic Composites via 4-Nitrophenyl Reactive Ester. J Org Chem 2019; 84:9975-9983. [PMID: 31296008 DOI: 10.1021/acs.joc.9b01122] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Preparation of chemically tunable magnetic nanoparticles (MNPs) is of great interest in many technological fields. Although numerous methods have been developed to prepare MNPs coated with functional organic moieties, most of them are complex, multistep, and involve the preparation of a specific ligand to be inserted on the particle surface. Herein, we describe the preparation of MNPs covered with reactive polymer poly(4-nitrophenyl methacrylate). The composite was prepared by the dispersion polymerization of 4-nitrophenyl methacrylate in the presence of magnetite nanoparticles stabilized by oleic acid. The novel material can be easily modified with amines to give chemically stable amide bonds without installation of pH-dependent features in the link. The extent of particle modification is readily monitored by the release of 4-nitrophenol from the polymer using UV-vis spectrophotometry. Good agreement between the degree of functionalization assessed by colorimetry and elemental analysis was obtained, and functionalization up to 3 mmol g-1 is easily attained. To illustrate the applicability of the method for catalyst development, we prepared imidazole-covered MNPs that accelerate the hydrolysis of a model organophosphate, with rate constants approximately 105-fold higher than the spontaneous hydrolysis. The catalyst can be recovered by a magnet and recycled without appreciable loss of catalytic activity.
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Silva VB, Nascimento LLQ, Nunes MC, Campos RB, Oliveira ARM, Orth ES. Puzzling Reaction of Imidazole with Methyl Parathion: P=S versus P=O Mechanistic Shift Dilemma in Organophosphates. Chemistry 2018; 25:817-822. [DOI: 10.1002/chem.201804107] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2018] [Revised: 10/23/2018] [Indexed: 11/06/2022]
Affiliation(s)
- Valmir B. Silva
- Department of ChemistryUniversidade Federal do Paraná CP 19081 CEP 81531-990 Curitiba-PR Brazil
| | | | - Marcelo C. Nunes
- Department of ChemistryUniversidade Federal do Paraná CP 19081 CEP 81531-990 Curitiba-PR Brazil
| | - Renan B. Campos
- Departamento Acadêmico de Química e BiologiaUniversidade Tecnológica Federal do Paraná Curitiba PR, ZIP 81280-340 Brazil
| | - Alfredo R. M. Oliveira
- Department of ChemistryUniversidade Federal do Paraná CP 19081 CEP 81531-990 Curitiba-PR Brazil
| | - Elisa S. Orth
- Department of ChemistryUniversidade Federal do Paraná CP 19081 CEP 81531-990 Curitiba-PR Brazil
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17
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Nonenzymatic electrochemical sensor based on imidazole-functionalized graphene oxide for progesterone detection. Biosens Bioelectron 2018; 112:108-113. [DOI: 10.1016/j.bios.2018.04.044] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Revised: 04/17/2018] [Accepted: 04/18/2018] [Indexed: 12/21/2022]
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18
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Wanderlind EH, Liz DG, Gerola AP, Affeldt RF, Nascimento V, Bretanha LC, Montecinos R, Garcia-Rio L, Fiedler HD, Nome F. Imidazole-Functionalized Pillar[5]arenes: Highly Reactive and Selective Supramolecular Artificial Enzymes. ACS Catal 2018. [DOI: 10.1021/acscatal.8b00901] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Eduardo H. Wanderlind
- Departamento de Química, Universidade Federal de Santa Catarina, Florianópolis, SC 88040-900, Brazil
| | - Daiane G. Liz
- Departamento de Química, Universidade Federal de Santa Catarina, Florianópolis, SC 88040-900, Brazil
| | - Adriana P. Gerola
- Departamento de Química, Universidade Federal de Santa Catarina, Florianópolis, SC 88040-900, Brazil
| | - Ricardo F. Affeldt
- Departamento de Química, Universidade Federal de Santa Catarina, Florianópolis, SC 88040-900, Brazil
| | - Vanessa Nascimento
- Departamento de Química, Universidade Federal de Santa Catarina, Florianópolis, SC 88040-900, Brazil
| | - Lizandra C. Bretanha
- Departamento de Química, Universidade Federal de Santa Catarina, Florianópolis, SC 88040-900, Brazil
| | - Rodrigo Montecinos
- Facultad de Química, Pontificia Universidad Católica de Chile, Av. Vicuña Mackenna 4860, Santiago, Chile
| | - Luis Garcia-Rio
- Centro de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS), Departamento de Química Física, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Haidi D. Fiedler
- Departamento de Química, Universidade Federal de Santa Catarina, Florianópolis, SC 88040-900, Brazil
| | - Faruk Nome
- Departamento de Química, Universidade Federal de Santa Catarina, Florianópolis, SC 88040-900, Brazil
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19
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Gabriela Vogt A, Perin G, Luchese C, da Silva PC, Antunes Wilhelm E, Santos Silva M. Organylselanyl α-Amino Phosphonates: Synthesis, NMR Spectroscopic Study, and Antioxidant and Antinociceptive Activities. European J Org Chem 2018. [DOI: 10.1002/ejoc.201701565] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Ane Gabriela Vogt
- Programa de Pós-Graduação em Bioquímica e Prospecção; Laboratório de Pesquisa em Farmacologia Bioquímica (LaFarBio); Grupo de Pesquisa em Neurobiotecnologia - GPN, CCQFA; Universidade Federal de Pelotas - UFPel; 96010-900 Capão do Leão RS Brazil
| | - Gelson Perin
- Programa de Pós-Graduação em Química; Laboratório de Síntese Orgânica Limpa - LASOL, CCQFA; Universidade Federal de Pelotas - UFPel; 96010-900 Capão do Leão RS Brazil
| | - Cristiane Luchese
- Programa de Pós-Graduação em Bioquímica e Prospecção; Laboratório de Pesquisa em Farmacologia Bioquímica (LaFarBio); Grupo de Pesquisa em Neurobiotecnologia - GPN, CCQFA; Universidade Federal de Pelotas - UFPel; 96010-900 Capão do Leão RS Brazil
| | - Patrícia Cecília da Silva
- Centro de Ciências Naturais e Humanas - CCNH; Universidade Federal do ABC - UFABC; 09210-180 Santo André SP Brazil
| | - Ethel Antunes Wilhelm
- Programa de Pós-Graduação em Bioquímica e Prospecção; Laboratório de Pesquisa em Farmacologia Bioquímica (LaFarBio); Grupo de Pesquisa em Neurobiotecnologia - GPN, CCQFA; Universidade Federal de Pelotas - UFPel; 96010-900 Capão do Leão RS Brazil
| | - Márcio Santos Silva
- Centro de Ciências Naturais e Humanas - CCNH; Universidade Federal do ABC - UFABC; 09210-180 Santo André SP Brazil
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20
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Hostert L, Blaskievicz SF, Fonsaca JE, Domingues SH, Zarbin AJ, Orth ES. Imidazole-derived graphene nanocatalysts for organophosphate destruction: Powder and thin film heterogeneous reactions. J Catal 2017. [DOI: 10.1016/j.jcat.2017.10.008] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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21
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Gerola AP, Wanderlind EH, Gomes YS, Giusti LA, García-Río L, Nome RA, Kirby AJ, Fiedler HD, Nome F. Supramolecular Polymer/Surfactant Complexes as Catalysts for Phosphate Transfer Reactions. ACS Catal 2017. [DOI: 10.1021/acscatal.7b00097] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Adriana P. Gerola
- INCT-Catálise,
Departamento de Química, Universidade Federal de Santa Catarina, Florianópolis, Santa Catarina 88040-900, Brazil
| | - Eduardo H. Wanderlind
- INCT-Catálise,
Departamento de Química, Universidade Federal de Santa Catarina, Florianópolis, Santa Catarina 88040-900, Brazil
| | - Yasmin S. Gomes
- INCT-Catálise,
Departamento de Química, Universidade Federal de Santa Catarina, Florianópolis, Santa Catarina 88040-900, Brazil
| | - Luciano A. Giusti
- INCT-Catálise,
Departamento de Química, Universidade Federal de Santa Catarina, Florianópolis, Santa Catarina 88040-900, Brazil
| | - Luis García-Río
- Departamento
de Química Física, Centro de Investigación en
Química Biológica y Materiales Moleculares, Universidad de Santiago de Compostela 15782 Santiago de
Compostela, Spain
| | - René A. Nome
- Instituto
de Química, Universidade Estadual de Campinas, Campinas 13083-970, São Paulo, Brazil
| | - Anthony J. Kirby
- Department
of Chemistry, University of Cambridge, Cambridge CB2 1EW, U.K
| | - Haidi D. Fiedler
- INCT-Catálise,
Departamento de Química, Universidade Federal de Santa Catarina, Florianópolis, Santa Catarina 88040-900, Brazil
| | - Faruk Nome
- INCT-Catálise,
Departamento de Química, Universidade Federal de Santa Catarina, Florianópolis, Santa Catarina 88040-900, Brazil
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22
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Silva VB, Rodrigues TS, Camargo PHC, Orth ES. Detoxification of organophosphates using imidazole-coated Ag, Au and AgAu nanoparticles. RSC Adv 2017. [DOI: 10.1039/c7ra07059d] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
Organophosphate (OP) detoxification is a worldwide problem due to the high stability of P–O bonds.
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Affiliation(s)
- Valmir B. Silva
- Departamento de Química
- Universidade Federal do Paraná
- 81531-980 Curitiba
- Brazil
| | - Thenner S. Rodrigues
- Instituto de Química
- Departamento de Química Fundamental
- Universidade de São Paulo
- São Paulo
- Brazil
| | - Pedro H. C. Camargo
- Instituto de Química
- Departamento de Química Fundamental
- Universidade de São Paulo
- São Paulo
- Brazil
| | - Elisa S. Orth
- Departamento de Química
- Universidade Federal do Paraná
- 81531-980 Curitiba
- Brazil
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23
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Pabis A, Williams NH, Kamerlin SCL. Simulating the reactions of substituted pyridinio-N-phosphonates with pyridine as a model for biological phosphoryl transfer. Org Biomol Chem 2017; 15:7308-7316. [DOI: 10.1039/c7ob01734k] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This work provides a comprehensive model for non-enzymatic phosphoryl transfer, as a baseline for understanding biological phosphoryl transfer reactions.
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Affiliation(s)
- Anna Pabis
- Department of Cell and Molecular Biology
- Uppsala University
- S-751 24 Uppsala
- Sweden
| | | | - Shina C. L. Kamerlin
- Department of Cell and Molecular Biology
- Uppsala University
- S-751 24 Uppsala
- Sweden
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24
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Campos RB, Menezes LRA, Barison A, Tantillo DJ, Orth ES. The Importance of Methyl Positioning and Tautomeric Equilibria for Imidazole Nucleophilicity. Chemistry 2016; 22:15521-15528. [DOI: 10.1002/chem.201602573] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2016] [Indexed: 11/09/2022]
Affiliation(s)
- Renan B. Campos
- Department of Chemistry; Universidade Federal do Paraná, CP 19081, CEP; 81531-990 Curitiba-PR Brasil
- Department of Chemistry; University of California-Davis; Davis California 95616 USA
- Departamento Acadêmico de Química e Biologia; Universidade Tecnológica Federal do Paraná; Curitiba, PR, ZIP 81280-340 Brazil
| | - Leociley R. A. Menezes
- Department of Chemistry; Universidade Federal do Paraná, CP 19081, CEP; 81531-990 Curitiba-PR Brasil
| | - Andersson Barison
- Department of Chemistry; Universidade Federal do Paraná, CP 19081, CEP; 81531-990 Curitiba-PR Brasil
| | - Dean J. Tantillo
- Department of Chemistry; University of California-Davis; Davis California 95616 USA
| | - Elisa S. Orth
- Department of Chemistry; Universidade Federal do Paraná, CP 19081, CEP; 81531-990 Curitiba-PR Brasil
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25
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Pereira MS, Murta B, Oliveira TCF, Manfredi AM, Nome F, Hengge AC, Brandão TAS. Mechanistic Aspects of Phosphate Diester Cleavage Assisted by Imidazole. A Template Reaction for Obtaining Aryl Phosphoimidazoles. J Org Chem 2016; 81:8663-8672. [PMID: 27392322 DOI: 10.1021/acs.joc.6b01358] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Phosphoimidazole-containing compounds are versatile players in biological and chemical processes. We explore catalytic and mechanistic criteria for the efficient formation of cyclic aryl phosphoimidazoles in aqueous solution, viewed as a template reaction for the in situ synthesis of related compounds. To provide a detailed analysis for this reaction a series of o-(2'-imidazolyl)naphthyl (4-nitrophenyl) phosphate isomers were examined to provide a basis for analysis of both mechanism and the influence of structural factors affecting the nucleophilic attack of the imidazolyl group on the phosphorus center of the substrate. Formation of the cyclic aryl phosphoimidazoles was probed by NMR and ESI-MS techniques. Kinetic experiments show that cyclization is faster under alkaline conditions, with an effective molarity up to 2900 M for the imidazolyl group, ruling out competition from external nucleophiles. Heavy atom isotope effect and computational studies show that the reaction occurs through a SN2(P)-type mechanism involving a pentacoordinated phosphorus TS, with apical positions occupied by the incoming imidazolyl nucleophile and the p-nitrophenolate leaving group. The P-O bond to the leaving group is about 50-60% broken in the transition state.
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Affiliation(s)
- Mozart S Pereira
- Department of Chemistry, ICEX, Federal University of Minas Gerais , Belo Horizonte, MG 31270-901, Brazil
| | - Bárbara Murta
- Department of Chemistry, ICEX, Federal University of Minas Gerais , Belo Horizonte, MG 31270-901, Brazil
| | - Thaís C F Oliveira
- Department of Chemistry, ICEX, Federal University of Minas Gerais , Belo Horizonte, MG 31270-901, Brazil
| | - Alex M Manfredi
- Department of Chemistry, Federal University of Santa Catarina , Florianópolis, SC 88040-900, Brazil
| | - Faruk Nome
- Department of Chemistry, Federal University of Santa Catarina , Florianópolis, SC 88040-900, Brazil
| | - Alvan C Hengge
- Department of Chemistry and Biochemistry, Utah State University , Logan, Utah 84322-0300, United States
| | - Tiago A S Brandão
- Department of Chemistry, ICEX, Federal University of Minas Gerais , Belo Horizonte, MG 31270-901, Brazil
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26
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Orth ES, Ferreira JG, Fonsaca JE, Blaskievicz SF, Domingues SH, Dasgupta A, Terrones M, Zarbin AJ. pKa determination of graphene-like materials: Validating chemical functionalization. J Colloid Interface Sci 2016; 467:239-244. [DOI: 10.1016/j.jcis.2016.01.013] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2015] [Revised: 01/06/2016] [Accepted: 01/08/2016] [Indexed: 12/11/2022]
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27
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Manfredi AM, Demos W, Wanderlind EH, Silva BV, Pinto AC, Souza BS, Nome F. Rapid cleavage of phosphate triesters by the oxime 2-(hydroxyimino)-N
-phenyl-acetamide. J PHYS ORG CHEM 2016. [DOI: 10.1002/poc.3549] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Alex M. Manfredi
- INCT-Catalysis, Departamento de Química; Universidade Federal de Santa Catarina; Florianópolis SC 88040-900 Brazil
| | - Willian Demos
- INCT-Catalysis, Departamento de Química; Universidade Federal de Santa Catarina; Florianópolis SC 88040-900 Brazil
| | - Eduardo H. Wanderlind
- INCT-Catalysis, Departamento de Química; Universidade Federal de Santa Catarina; Florianópolis SC 88040-900 Brazil
| | - Bárbara V. Silva
- Instituto de Química-CT, Bloco A; Universidade Federal do Rio de Janeiro; Rio de Janeiro RJ 21941-970 Brazil
| | - Angelo C. Pinto
- Instituto de Química-CT, Bloco A; Universidade Federal do Rio de Janeiro; Rio de Janeiro RJ 21941-970 Brazil
| | - Bruno S. Souza
- INCT-Catalysis, Departamento de Química; Universidade Federal de Santa Catarina; Florianópolis SC 88040-900 Brazil
| | - Faruk Nome
- INCT-Catalysis, Departamento de Química; Universidade Federal de Santa Catarina; Florianópolis SC 88040-900 Brazil
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28
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Campos RB, Santos EH, Oliveira ARM, Ocampos FMM, Souza BS, Barison A, Orth ES. Reactivity of Imidazole Derivatives toward Phosphate Triester in DMSO/Water Mixtures: A Comprehensive Study on the Solvent Effect. J Org Chem 2015; 80:7572-80. [DOI: 10.1021/acs.joc.5b01152] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Renan B. Campos
- Departamento
de Química, Universidade Federal do Paraná (UFPR), CP 19081, Curitiba, PR, CEP 81531-990, Brazil
| | - Everton H. Santos
- Departamento
de Química, Universidade Federal do Paraná (UFPR), CP 19081, Curitiba, PR, CEP 81531-990, Brazil
| | - Alfredo R. M. Oliveira
- Departamento
de Química, Universidade Federal do Paraná (UFPR), CP 19081, Curitiba, PR, CEP 81531-990, Brazil
| | | | - Bruno S. Souza
- Universidade Federal de Santa Catarina, Florianópolis, SC, 88040-900, Brazil
| | - Andersson Barison
- Departamento
de Química, Universidade Federal do Paraná (UFPR), CP 19081, Curitiba, PR, CEP 81531-990, Brazil
| | - Elisa S. Orth
- Departamento
de Química, Universidade Federal do Paraná (UFPR), CP 19081, Curitiba, PR, CEP 81531-990, Brazil
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29
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Mechanistic insight on the catalytic detoxification of Paraoxon mediated by imidazole: Furnishing optimum scaffolds for scavenging organophosphorus agents. ACTA ACUST UNITED AC 2015. [DOI: 10.1016/j.molcata.2015.03.020] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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30
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Ferreira JGL, Ramos LM, de Oliveira AL, Orth ES, Neto BAD. An Ionically Tagged Water-Soluble Artificial Enzyme Promotes the Dephosphorylation Reaction with Nitroimidazole: Enhanced Ionic Liquid Effect and Mechanism. J Org Chem 2015; 80:5979-83. [DOI: 10.1021/acs.joc.5b00750] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- José G. L. Ferreira
- Department
of Chemistry, Universidade Federal do Paraná (UFPR), CP 19081, CEP 81531-990, Curitiba, PR, Brazil
| | - Luciana M. Ramos
- Laboratory
of Medicinal and Technological Chemistry, University of Brasília, Chemistry Institute
(IQ-UnB), Campus Universitário
Darcy Ribeiro, CEP 70904-970, P.O. Box 4478, Brasília, DF, Brazil
| | - Aline L. de Oliveira
- Laboratory
of Medicinal and Technological Chemistry, University of Brasília, Chemistry Institute
(IQ-UnB), Campus Universitário
Darcy Ribeiro, CEP 70904-970, P.O. Box 4478, Brasília, DF, Brazil
| | - Elisa S. Orth
- Department
of Chemistry, Universidade Federal do Paraná (UFPR), CP 19081, CEP 81531-990, Curitiba, PR, Brazil
| | - Brenno A. D. Neto
- Laboratory
of Medicinal and Technological Chemistry, University of Brasília, Chemistry Institute
(IQ-UnB), Campus Universitário
Darcy Ribeiro, CEP 70904-970, P.O. Box 4478, Brasília, DF, Brazil
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31
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Ferreira JGL, Grein-Iankovski A, Oliveira MAS, Simas-Tosin FF, Riegel-Vidotti IC, Orth ES. A tailored biocatalyst achieved by the rational anchoring of imidazole groups on a natural polymer: furnishing a potential artificial nuclease by sustainable materials engineering. Chem Commun (Camb) 2015; 51:6210-3. [DOI: 10.1039/c5cc00860c] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Biocatalysts were obtained by anchoring imidazole groups on the biocompatible gum arabic, with catalytic activity in dephosphorylation reactions and cleavage of plasmid DNA.
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Affiliation(s)
| | | | | | | | | | - Elisa S. Orth
- Department of Chemistry
- Universidade Federal do Paraná (UFPR)
- Curitiba
- Brazil
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32
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Giusti LA, Medeiros M, Ferreira NL, Mora JR, Fiedler HD. Polymers containing imidazole groups as nanoreactors for hydrolysis of esters. J PHYS ORG CHEM 2014. [DOI: 10.1002/poc.3263] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Luciano A. Giusti
- Departamento de Química; Universidade Federal de Santa Catarina; Florianópolis SC 88040-900 Brazil
| | - Michelle Medeiros
- Departamento de Química; Universidade Federal de Santa Catarina; Florianópolis SC 88040-900 Brazil
| | - Natasha Londero Ferreira
- Departamento de Química; Universidade Federal de Santa Catarina; Florianópolis SC 88040-900 Brazil
| | - José R. Mora
- Departamento de Química; Universidade Federal de Santa Catarina; Florianópolis SC 88040-900 Brazil
| | - Haidi D. Fiedler
- Departamento de Química; Universidade Federal de Santa Catarina; Florianópolis SC 88040-900 Brazil
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33
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Orth ES, Fonsaca JES, Almeida TG, Domingues SH, Ferreira JGL, Zarbin AJG. Functionalized graphene oxide as a nanocatalyst in dephosphorylation reactions: pursuing artificial enzymes. Chem Commun (Camb) 2014; 50:9891-4. [DOI: 10.1039/c4cc03262d] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The first report on the use of thiol-functionalized graphene oxide as a recyclable nanocatalyst in dephosphorylation reactions with impressive activity (>105-fold).
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Affiliation(s)
- Elisa S. Orth
- Department of Chemistry
- Universidade Federal do Paraná (UFPR)
- Curitiba, Brazil
| | | | | | - Sergio H. Domingues
- Department of Chemistry
- Universidade Federal do Paraná (UFPR)
- Curitiba, Brazil
| | - José G. L. Ferreira
- Department of Chemistry
- Universidade Federal do Paraná (UFPR)
- Curitiba, Brazil
| | - Aldo J. G. Zarbin
- Department of Chemistry
- Universidade Federal do Paraná (UFPR)
- Curitiba, Brazil
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34
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Medeiros M, Wanderlind EH, Mora JR, Moreira R, Kirby AJ, Nome F. Major mechanistic differences between the reactions of hydroxylamine with phosphate di- and tri-esters. Org Biomol Chem 2013; 11:6272-84. [DOI: 10.1039/c3ob40988k] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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35
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New light on phosphate transfer from triesters. BIOCHIMICA ET BIOPHYSICA ACTA-PROTEINS AND PROTEOMICS 2013; 1834:454-63. [DOI: 10.1016/j.bbapap.2012.04.010] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2012] [Revised: 04/12/2012] [Accepted: 04/24/2012] [Indexed: 11/18/2022]
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36
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Medeiros M, Orth ES, Manfredi AM, Pavez P, Micke GA, Kirby AJ, Nome F. Dephosphorylation Reactions of Mono-, Di-, and Triesters of 2,4-Dinitrophenyl Phosphate with Deferoxamine and Benzohydroxamic Acid. J Org Chem 2012; 77:10907-13. [DOI: 10.1021/jo302374q] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Michelle Medeiros
- INCT-Catálise,
Departamento
de Química, Universidade Federal de Santa Catarina, Florianópolis, SC, 88040-970, Brasil
| | - Elisa S. Orth
- INCT-Catálise,
Departamento
de Química, Universidade Federal de Santa Catarina, Florianópolis, SC, 88040-970, Brasil
| | - Alex M. Manfredi
- INCT-Catálise,
Departamento
de Química, Universidade Federal de Santa Catarina, Florianópolis, SC, 88040-970, Brasil
| | - Paulina Pavez
- Pontificia Universidad Católica de Chile, Av. Vicuña Mackenna
4860, Santiago 6094411, Chile
| | - Gustavo A. Micke
- INCT-Catálise,
Departamento
de Química, Universidade Federal de Santa Catarina, Florianópolis, SC, 88040-970, Brasil
| | | | - Faruk Nome
- INCT-Catálise,
Departamento
de Química, Universidade Federal de Santa Catarina, Florianópolis, SC, 88040-970, Brasil
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37
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Milen M, Ábrányi-Balogh P, Balogh G, Drahos L, Keglevich G. A Study on the Phosphorylation of Indole, Imidazole, Carbazole, and Phenothiazine Derivatives. PHOSPHORUS SULFUR 2012. [DOI: 10.1080/10426507.2012.668986] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Mátyás Milen
- a Department of Organic Chemistry and Technology , Budapest University of Technology and Economics , Budapest , Hungary
- b EGIS Pharmaceuticals Plc. , Division for Chemical Research , Budapest , Hungary
| | - Péter Ábrányi-Balogh
- a Department of Organic Chemistry and Technology , Budapest University of Technology and Economics , Budapest , Hungary
| | - György Balogh
- a Department of Organic Chemistry and Technology , Budapest University of Technology and Economics , Budapest , Hungary
- c Gedeon Richter Plc. , Budapest , Hungary
| | - László Drahos
- d Hungarian Academy of Sciences , Chemical Research Center , Budapest , Hungary
| | - György Keglevich
- a Department of Organic Chemistry and Technology , Budapest University of Technology and Economics , Budapest , Hungary
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