1
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García Molina P, Saura-Sanmartin A, Berna J, Teruel JA, Muñoz Muñoz JL, Rodríguez López JN, García Cánovas F, García Molina F. Considerations about the inhibition of monophenolase and diphenolase activities of tyrosinase. Characterization of the inhibitor concentration which generates 50 % of inhibition, type and inhibition constants. A review. Int J Biol Macromol 2024; 267:131513. [PMID: 38608979 DOI: 10.1016/j.ijbiomac.2024.131513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2023] [Revised: 04/08/2024] [Accepted: 04/09/2024] [Indexed: 04/14/2024]
Abstract
Tyrosinase is a copper oxidase enzyme which catalyzes the first two steps in the melanogenesis pathway, L-tyrosine to L-dopa conversion and, then, to o-dopaquinone and dopachrome. Hypopigmentation and, above all, hyperpigmentation issues can be originated depending on their activity. This enzyme also promotes the browning of fruits and vegetables. Therefore, control of their activity by regulators is research topic of great relevance. In this work, we consider the use of inhibitors of monophenolase and diphenolase activities of the enzyme in order to accomplish such control. An experimental design and data analysis which allow the accurate calculation of the degree of inhibition of monophenolase activity (iM) and diphenolase activity (iD) are proposed. The IC50 values (amount of inhibitor that causes 50 % inhibition at a fixed substrate concentration) can be calculated for the two activities and from the values of IC50M (monophenolase) and IC50D(diphenolase). Additionally, the strength and type of inhibition can be deduced from these values. The data analysis from these IC50D values allows to obtain the values of [Formula: see text] or [Formula: see text] , or and [Formula: see text] from the values of IC50M. In all cases, the values of the different must satisfy their relationship with IC50M and IC50D.
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Affiliation(s)
- Pablo García Molina
- GENZ-Group of Research on Enzymology, Department of Biochemistry and Molecular Biology-A, Regional Campus of International Excellence "Campus Mare Nostrum", University of Murcia, Espinardo, Murcia, Spain
| | - Adrian Saura-Sanmartin
- Department of Organic Chemistry, Faculty of Chemistry, University of Murcia, E-30100 Espinardo, Murcia, Spain.
| | - Jose Berna
- Department of Organic Chemistry, Faculty of Chemistry, University of Murcia, E-30100 Espinardo, Murcia, Spain
| | - Jose Antonio Teruel
- Department of Biochemistry and Molecular Biology-A, Regional Campus of International Excellence "Campus Mare Nostrum", University of Murcia, Espinardo, Murcia, Spain
| | - Jose Luis Muñoz Muñoz
- Microbial Enzymology Lab, Department of Applied Sciences, Ellison Building A, University of Northumbria, Newcastle Upon Tyne, UK
| | - Jose Neptuno Rodríguez López
- GENZ-Group of Research on Enzymology, Department of Biochemistry and Molecular Biology-A, Regional Campus of International Excellence "Campus Mare Nostrum", University of Murcia, Espinardo, Murcia, Spain
| | - Francisco García Cánovas
- GENZ-Group of Research on Enzymology, Department of Biochemistry and Molecular Biology-A, Regional Campus of International Excellence "Campus Mare Nostrum", University of Murcia, Espinardo, Murcia, Spain
| | - Francisco García Molina
- Department of Anatomía Patológica, Hospital General Universitario Reina Sofía, Av. Intendente Jorge Palacios, 1, 30003 Murcia, Spain.
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2
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Puigcerver J, Marin-Luna M, Iglesias-Sigüenza J, Alajarin M, Martinez-Cuezva A, Berna J. Mechanically Planar-to-Point Chirality Transmission in [2]Rotaxanes. J Am Chem Soc 2024; 146:2882-2887. [PMID: 38266249 PMCID: PMC10859924 DOI: 10.1021/jacs.3c11611] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Revised: 01/18/2024] [Accepted: 01/19/2024] [Indexed: 01/26/2024]
Abstract
Herein we describe an effective transmission of chirality, from mechanically planar chirality to point chirality, in hydrogen-bonded [2]rotaxanes. A highly selective mono-N-methylation of one (out of four) amide N atom at the macrocyclic counterpart of starting achiral rotaxanes generates mechanically planar chirality. Followed by chiral resolution, both enantiomers were subjected to a base-promoted intramolecular cyclization, where their interlocked threads were transformed into new lactam moieties. As a matter of fact, the mechanically planar chiral information was effectively transferred to the resulting stereocenters (covalent chirality) of the newly formed heterocycles. Upon removing the entwined macrocycle, the final lactams were obtained with high enantiopurity.
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Affiliation(s)
- Julio Puigcerver
- Departamento
de Quimica Organica, Facultad de Quimica, Regional Campus of International
Excellence “Campus Mare Nostrum”, Universidad de Murcia, E-30100 Murcia, Spain
| | - Marta Marin-Luna
- Departamento
de Quimica Organica, Facultad de Quimica, Regional Campus of International
Excellence “Campus Mare Nostrum”, Universidad de Murcia, E-30100 Murcia, Spain
| | - Javier Iglesias-Sigüenza
- Departamento
de Quimica Organica and Centro de Innovacion en Quimica Avanzada (ORFEO-CINQA), Universidad de Sevilla, E-41012 Sevilla, Spain
| | - Mateo Alajarin
- Departamento
de Quimica Organica, Facultad de Quimica, Regional Campus of International
Excellence “Campus Mare Nostrum”, Universidad de Murcia, E-30100 Murcia, Spain
| | - Alberto Martinez-Cuezva
- Departamento
de Quimica Organica, Facultad de Quimica, Regional Campus of International
Excellence “Campus Mare Nostrum”, Universidad de Murcia, E-30100 Murcia, Spain
| | - Jose Berna
- Departamento
de Quimica Organica, Facultad de Quimica, Regional Campus of International
Excellence “Campus Mare Nostrum”, Universidad de Murcia, E-30100 Murcia, Spain
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3
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Puigcerver J, Alajarin M, Martinez-Cuezva A, Berna J. Modulating the shuttling motion of [2]rotaxanes built of p-xylylenediamine units through permethylation at the benzylic positions of the ring. Org Biomol Chem 2023; 21:9070-9075. [PMID: 37938860 DOI: 10.1039/d3ob01611k] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2023]
Abstract
In this study, we show the effect of the gem-dimethyl substitution at the four benzylic carbons of the ring on the internal dynamics of two-station [2]rotaxanes. Such structural modification of the polyamide macrocycles promotes a drastic change of the internal dynamics as shown by variable-temperature (VT) 1H NMR experiments. We determined that the shuttling rates of the octamethylated macrocycle along a series of symmetrical threads were significantly faster compared to the non-substituted ring. This effect was particularly pronounced in the fumaramide-based system, in which the rate was 27 times faster than that of the model system.
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Affiliation(s)
- Julio Puigcerver
- Departamento de Química Orgánica, Facultad de Química, Regional Campus of International Excellence "Campus Mare Nostrum", Universidad de Murcia, E-30100 Murcia, Spain.
| | - Mateo Alajarin
- Departamento de Química Orgánica, Facultad de Química, Regional Campus of International Excellence "Campus Mare Nostrum", Universidad de Murcia, E-30100 Murcia, Spain.
| | - Alberto Martinez-Cuezva
- Departamento de Química Orgánica, Facultad de Química, Regional Campus of International Excellence "Campus Mare Nostrum", Universidad de Murcia, E-30100 Murcia, Spain.
| | - Jose Berna
- Departamento de Química Orgánica, Facultad de Química, Regional Campus of International Excellence "Campus Mare Nostrum", Universidad de Murcia, E-30100 Murcia, Spain.
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4
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Saura-Sanmartin A, Lopez-Sanchez J, Lopez-Leonardo C, Pastor A, Berna J. Exploring the Chemistry of the Mechanical Bond: Synthesis of a [2]Rotaxane through Multicomponent Reactions. J Chem Educ 2023; 100:3355-3363. [PMID: 37720524 PMCID: PMC10501439 DOI: 10.1021/acs.jchemed.3c00163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 07/10/2023] [Indexed: 09/19/2023]
Abstract
The synthesis of a [2]rotaxane through three- or five-component coupling reactions has been adapted to an organic chemistry experiment for upper-division students. The experimental procedure addresses the search for the most favorable reaction conditions for the synthesis of the interlocked compound, which is obtained in a yield of up to 71%. Moreover, the interlocked nature of the rotaxane is proven by NMR spectroscopy. The content of the sessions has been designed on the basis of a proactive methodology whereby upper-division undergraduate students have a dynamic role. The laboratory experience not only introduces students to the chemistry of the mechanical bond but also reinforces their previous knowledge of basic organic laboratory procedures and their skills with structural elucidation techniques such as NMR and FT-IR spectroscopies. The experiment has been designed in such a customizable way that both experimental procedures and laboratory material can be adapted to a wide range of undergraduate course curricula.
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Affiliation(s)
- Adrian Saura-Sanmartin
- Departamento de Química
Orgánica, Facultad de Química, Regional Campus of International
Excellence “Campus Mare Nostrum”, Universidad de Murcia, E-30100 Murcia, Spain
| | - Jorge Lopez-Sanchez
- Departamento de Química
Orgánica, Facultad de Química, Regional Campus of International
Excellence “Campus Mare Nostrum”, Universidad de Murcia, E-30100 Murcia, Spain
| | - Carmen Lopez-Leonardo
- Departamento de Química
Orgánica, Facultad de Química, Regional Campus of International
Excellence “Campus Mare Nostrum”, Universidad de Murcia, E-30100 Murcia, Spain
| | - Aurelia Pastor
- Departamento de Química
Orgánica, Facultad de Química, Regional Campus of International
Excellence “Campus Mare Nostrum”, Universidad de Murcia, E-30100 Murcia, Spain
| | - Jose Berna
- Departamento de Química
Orgánica, Facultad de Química, Regional Campus of International
Excellence “Campus Mare Nostrum”, Universidad de Murcia, E-30100 Murcia, Spain
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5
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Perez JDM, Alajarin M, Martinez Cuezva A, Berna J. Reactivity of Glutaconamides Within [2]Rotaxanes: Mechanical Bond-Controlled Chemoselective Synthesis of Highly Reactive α-KetoAmides and their Light-Triggered Cyclization. Angew Chem Int Ed Engl 2023; 62:e202302681. [PMID: 36952651 DOI: 10.1002/anie.202302681] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Revised: 03/21/2023] [Accepted: 03/22/2023] [Indexed: 03/25/2023]
Abstract
Glutaconamide-based [2]rotaxanes are efficiently oxidized to the respective interlocked α-ketoamides, whereas their non-interlocked threads afford hydroxy-cyclohexene tetraamides under similar reaction conditions. These results showcase the mechanically interlocking of highly reactive substrates as a powerful tool for controlling their chemical behavior. Inside the macrocycle and under light irradiation, the α-ketoamide threads convert, in a divergent manner, into the corresponding interlocked hydroxy-β-lactams or oxazolidinones via two modes of Norrish/Yang type-II intramolecular cyclizations, processes that are efficiently chemocontrolled by the mechanical bond.
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Affiliation(s)
| | - Mateo Alajarin
- Universidad de Murcia Facultad de Quimica, Química Orgánica, SPAIN
| | | | - Jose Berna
- Universidad de Murcia, Quimica Organica, Campus de Espinardo, 30100, Murcia, SPAIN
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6
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Saura-Sanmartin A, Nicolas-Garcia T, Pastor A, Quiñonero D, Alajarin M, Martinez-Cuezva A, Berna J. Control of the assembly of a cyclic hetero[4]pseudorotaxane from a self-complementary [2]rotaxane. Chem Sci 2023; 14:4143-4151. [PMID: 37063802 PMCID: PMC10094293 DOI: 10.1039/d3sc00886j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Accepted: 03/22/2023] [Indexed: 03/30/2023] Open
Abstract
The self-association of a ditopic [2]rotaxane with two macrocycles mainly leads to a [4]pseudorotaxane which can be reversibly disassembled by adding competitive binders, varying the solvent polarity and changing a binding site affinity.
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Affiliation(s)
- Adrian Saura-Sanmartin
- Department of Organic Chemistry, Faculty of Chemistry, University of Murcia, Regional Campus of International Excellence "Campus Mare Nostrum" 30100 Murcia Spain
| | - Tomas Nicolas-Garcia
- Department of Organic Chemistry, Faculty of Chemistry, University of Murcia, Regional Campus of International Excellence "Campus Mare Nostrum" 30100 Murcia Spain
| | - Aurelia Pastor
- Department of Organic Chemistry, Faculty of Chemistry, University of Murcia, Regional Campus of International Excellence "Campus Mare Nostrum" 30100 Murcia Spain
| | - David Quiñonero
- Departamento de Química, Universidad de las Islas Baleares Crta de Valldemossa km 7.5 E-07122 Palma de Mallorca (Baleares) Spain
| | - Mateo Alajarin
- Department of Organic Chemistry, Faculty of Chemistry, University of Murcia, Regional Campus of International Excellence "Campus Mare Nostrum" 30100 Murcia Spain
| | - Alberto Martinez-Cuezva
- Department of Organic Chemistry, Faculty of Chemistry, University of Murcia, Regional Campus of International Excellence "Campus Mare Nostrum" 30100 Murcia Spain
| | - Jose Berna
- Department of Organic Chemistry, Faculty of Chemistry, University of Murcia, Regional Campus of International Excellence "Campus Mare Nostrum" 30100 Murcia Spain
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7
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Lopez-Leonardo C, Saura-Sanmartin A, Marin-Luna M, Alajarin M, Martinez-Cuezva A, Berna J. Ring-to-Thread Chirality Transfer in [2]Rotaxanes for the Synthesis of Enantioenriched Lactams. Angew Chem Int Ed Engl 2022; 61:e202209904. [PMID: 35916122 DOI: 10.1002/anie.202209904] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Indexed: 01/07/2023]
Abstract
The synthesis of chiral mechanically interlocked molecules has attracted a lot of attention in the last few years, with applications in different fields, such as asymmetric catalysis or sensing. Herein we describe the synthesis of orientational mechanostereoisomers, which include a benzylic amide macrocycle with a stereogenic center, and nonsymmetric N-(arylmethyl)fumaramides as the axis. The base-promoted cyclization of the initial fumaramide thread allows enantioenriched value-added compounds, such as lactams of different ring sizes and amino acids, to be obtained. The chiral information is effectively transmitted across the mechanical bond from the encircling ring to the interlocked lactam. High levels of enantioselectivity and full control of the regioselectivity of the final cyclic compounds are attained.
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Affiliation(s)
- Carmen Lopez-Leonardo
- Departamento de Química Orgánica, Facultad de Química, Regional Campus of International Excellence "Campus Mare Nostrum", Universidad de Murcia, 30100, Murcia, Spain
| | - Adrian Saura-Sanmartin
- Departamento de Química Orgánica, Facultad de Química, Regional Campus of International Excellence "Campus Mare Nostrum", Universidad de Murcia, 30100, Murcia, Spain
| | - Marta Marin-Luna
- Departamento de Química Orgánica, Facultad de Química, Regional Campus of International Excellence "Campus Mare Nostrum", Universidad de Murcia, 30100, Murcia, Spain
| | - Mateo Alajarin
- Departamento de Química Orgánica, Facultad de Química, Regional Campus of International Excellence "Campus Mare Nostrum", Universidad de Murcia, 30100, Murcia, Spain
| | - Alberto Martinez-Cuezva
- Departamento de Química Orgánica, Facultad de Química, Regional Campus of International Excellence "Campus Mare Nostrum", Universidad de Murcia, 30100, Murcia, Spain
| | - Jose Berna
- Departamento de Química Orgánica, Facultad de Química, Regional Campus of International Excellence "Campus Mare Nostrum", Universidad de Murcia, 30100, Murcia, Spain
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8
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Lopez-Leonardo C, Saura-Sanmartin A, Marin-Luna M, Alajarin M, Martinez-Cuezva A, Berna J. Ring‐to‐Thread Chirality Transfer in [2]Rotaxanes for the Synthesis of Enantioenriched Lactams. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202209904] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
| | | | - Marta Marin-Luna
- Universidad de Murcia Química Orgánica Campus de Espinardo 30100 Murcia SPAIN
| | - Mateo Alajarin
- Universidad de Murcia Química Orgánica Campus de Espinardo 30100 Murcia SPAIN
| | | | - Jose Berna
- Universidad de Murcia Quimica Organica Campus de Espinardo 30100 Murcia SPAIN
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9
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Saura-Sanmartin A, Pastor A, Martinez-Cuezva A, Cutillas-Font G, Alajarin M, Berna J. Mechanically interlocked molecules in metal-organic frameworks. Chem Soc Rev 2022; 51:4949-4976. [PMID: 35612363 DOI: 10.1039/d2cs00167e] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Mechanically interlocked molecules (MIMs) have great potential in the development of molecular machinery due to their intercomponent dynamics. The incorporation of these molecules in a condensed phase makes it possible to take advantage of the control of the motion of the components at the macroscopic level. Metal-organic frameworks (MOFs) are postulated as ideal supports for intertwined molecules. This review covers the chemistry of the mechanical bond incorporated into metal-organic frameworks from the seminal studies to the latest published advances. We first describe some fundamental concepts of MIMs and MOFs. Next, we summarize the advances in the incorporation of rotaxanes and catenanes inside MOF matrices. Finally, we conclude by showing the study of the rotaxane dynamics in MOFs and the operation of some stimuli-responsive MIMs within MOFs. In addition to emphasising some selected examples, we offer a critical opinion on the state of the art of this research field, remarking the key points on which the future of these systems should be focused.
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Affiliation(s)
- Adrian Saura-Sanmartin
- Departamento de Química Orgánica, Facultad de Química, Regional Campus of International Excellence "Campus Mare Nostrum", Universidad de Murcia, E-30100, Murcia, Spain.
| | - Aurelia Pastor
- Departamento de Química Orgánica, Facultad de Química, Regional Campus of International Excellence "Campus Mare Nostrum", Universidad de Murcia, E-30100, Murcia, Spain.
| | - Alberto Martinez-Cuezva
- Departamento de Química Orgánica, Facultad de Química, Regional Campus of International Excellence "Campus Mare Nostrum", Universidad de Murcia, E-30100, Murcia, Spain.
| | - Guillermo Cutillas-Font
- Departamento de Química Orgánica, Facultad de Química, Regional Campus of International Excellence "Campus Mare Nostrum", Universidad de Murcia, E-30100, Murcia, Spain.
| | - Mateo Alajarin
- Departamento de Química Orgánica, Facultad de Química, Regional Campus of International Excellence "Campus Mare Nostrum", Universidad de Murcia, E-30100, Murcia, Spain.
| | - Jose Berna
- Departamento de Química Orgánica, Facultad de Química, Regional Campus of International Excellence "Campus Mare Nostrum", Universidad de Murcia, E-30100, Murcia, Spain.
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10
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Perez JDM, Alajarin M, Martinez-Cuezva A, Berna J. Modulating the Catalytic Activity by the Mechanical Bond: Organocatalysis with Polyamide [2]Rotaxanes bearing a Secondary Amino Function at the Thread. Org Chem Front 2022. [DOI: 10.1039/d2qo00481j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The modulation of the catalytic activity of degenerate succinamide-based [2]rotaxanes by changes at their macrocyclic component is disclosed herein. These systems, bearing an acyclic secondary amine function at the thread...
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11
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Saura-Sanmartin A, Pastor A, Martinez-Cuezva A, Berna J. Maximizing the [ c2]daisy chain to lasso ratio through competitive self-templating clipping reactions. Chem Commun (Camb) 2021; 58:290-293. [PMID: 34881747 DOI: 10.1039/d1cc05942d] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Self-templating two-component coupling reactions allowed the isolation of two threaded products with different molecular sizes: a lasso-type [1]rotaxane and a [c2]daisy chain rotaxane. Their distribution in the final reaction mixture varies as a factor of the concentration of the reactants. Through this methodology we obtained a large 84-membered cyclic multistation [2]rotaxane.
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Affiliation(s)
- Adrian Saura-Sanmartin
- Departamento de Química Orgánica, Facultad de Química, Regional Campus of International Excellence "Campus Mare Nostrum", Universidad de Murcia, E-30100, Murcia, Spain.
| | - Aurelia Pastor
- Departamento de Química Orgánica, Facultad de Química, Regional Campus of International Excellence "Campus Mare Nostrum", Universidad de Murcia, E-30100, Murcia, Spain.
| | - Alberto Martinez-Cuezva
- Departamento de Química Orgánica, Facultad de Química, Regional Campus of International Excellence "Campus Mare Nostrum", Universidad de Murcia, E-30100, Murcia, Spain.
| | - Jose Berna
- Departamento de Química Orgánica, Facultad de Química, Regional Campus of International Excellence "Campus Mare Nostrum", Universidad de Murcia, E-30100, Murcia, Spain.
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12
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Abstract
The synthesis of a series of interlocked profragrances and the study of the controlled release of the corresponding scents are reported. The structures of the profragrances are based on a [2]pseudorotaxane scaffold with a fumaramate thread derived from perfumery alcohols and a tetrabenzylamido ring. The delivery of the scents was accomplished by sequential thermal dethreading and further enzymatic hydrolysis. Alternatively, the dethreading can be achieved by increasing the polarity of the solvent or photochemical isomerization. The temperature of dethreading can be modulated by the steric demand of the ends of the thread, which allows the selection of different precursor structures depending on the desired rates of delivery. The inputs and outputs for the controlled release of the interlocked profragrances correspond to those of YES or AND logic gates.
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Affiliation(s)
- Jorge Lopez-Sanchez
- Department of Organic Chemistry, Faculty of Chemistry, University of Murcia, Regional Campus of International Excellence "Campus Mare Nostrum", 30100 Murcia, Spain
| | - Mateo Alajarin
- Department of Organic Chemistry, Faculty of Chemistry, University of Murcia, Regional Campus of International Excellence "Campus Mare Nostrum", 30100 Murcia, Spain
| | - Aurelia Pastor
- Department of Organic Chemistry, Faculty of Chemistry, University of Murcia, Regional Campus of International Excellence "Campus Mare Nostrum", 30100 Murcia, Spain
| | - Jose Berna
- Department of Organic Chemistry, Faculty of Chemistry, University of Murcia, Regional Campus of International Excellence "Campus Mare Nostrum", 30100 Murcia, Spain
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13
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14
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Saura‐Sanmartin A, Martinez‐Cuezva A, Marin‐Luna M, Bautista D, Berna J. Effective Encapsulation of C
60
by Metal–Organic Frameworks with Polyamide Macrocyclic Linkers. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202100996] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Adrian Saura‐Sanmartin
- Departamento de Quimica Organica Facultad de Quimica Regional Campus of International Excellence “Campus Mare Nostrum” Universidad de Murcia 30100 Murcia Spain
| | - Alberto Martinez‐Cuezva
- Departamento de Quimica Organica Facultad de Quimica Regional Campus of International Excellence “Campus Mare Nostrum” Universidad de Murcia 30100 Murcia Spain
| | - Marta Marin‐Luna
- Departamento de Quimica Organica Facultad de Quimica Regional Campus of International Excellence “Campus Mare Nostrum” Universidad de Murcia 30100 Murcia Spain
| | - Delia Bautista
- Seccion Universitaria de Instrumentacion Científica (SUIC) Area Cientifica y Tecnica de Investigacion (ACTI) Universidad de Murcia 30100 Murcia Spain
| | - Jose Berna
- Departamento de Quimica Organica Facultad de Quimica Regional Campus of International Excellence “Campus Mare Nostrum” Universidad de Murcia 30100 Murcia Spain
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15
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Saura-Sanmartin A, Martinez-Cuezva A, Marin-Luna M, Bautista D, Berna J. Effective Encapsulation of C 60 by Metal-Organic Frameworks with Polyamide Macrocyclic Linkers. Angew Chem Int Ed Engl 2021; 60:10814-10819. [PMID: 33617658 DOI: 10.1002/anie.202100996] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Revised: 02/18/2021] [Indexed: 12/14/2022]
Abstract
A flexible benzylic amide macrocycle, functionalized with two carboxylic acid groups, was employed as the organic ligand for the preparation of robust copper(II)- and zinc(II)-based metal-organic frameworks. These polymers crystallized in the C2/m space group of the monoclinic crystal system, creating non-interpenetrated channels in one direction with an extraordinary solvent-accessible volume of 46 %. Unlike metal-organic rotaxane frameworks having benzylic amide macrocycles as linkers, the absence of the thread in these novel reticular materials causes a decrease of dimensionality and an improvement of pore size and dynamic guest adaptability. We studied the incorporation of fullerene C60 inside the adjustable pocket generated between two macrocycles connected to the same dinuclear clusters, occupying a remarkable 98 % of the cavities inside the network. The use of these materials as hosts for the selective recognition of different fullerenes was evaluated, mainly encapsulating the smaller size fullerene derivative in several mixtures of C60 and C70 .
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Affiliation(s)
- Adrian Saura-Sanmartin
- Departamento de Quimica Organica, Facultad de Quimica, Regional Campus of International Excellence "Campus Mare Nostrum", Universidad de Murcia, 30100, Murcia, Spain
| | - Alberto Martinez-Cuezva
- Departamento de Quimica Organica, Facultad de Quimica, Regional Campus of International Excellence "Campus Mare Nostrum", Universidad de Murcia, 30100, Murcia, Spain
| | - Marta Marin-Luna
- Departamento de Quimica Organica, Facultad de Quimica, Regional Campus of International Excellence "Campus Mare Nostrum", Universidad de Murcia, 30100, Murcia, Spain
| | - Delia Bautista
- Seccion Universitaria de Instrumentacion Científica (SUIC), Area Cientifica y Tecnica de Investigacion (ACTI), Universidad de Murcia, 30100, Murcia, Spain
| | - Jose Berna
- Departamento de Quimica Organica, Facultad de Quimica, Regional Campus of International Excellence "Campus Mare Nostrum", Universidad de Murcia, 30100, Murcia, Spain
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16
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Saura-Sanmartin A, Martinez-Cuezva A, Berna J. Coupling the Individual Motions of the Machine-like Components of Zirconium(IV) Organic Frameworks. Chem 2021. [DOI: 10.1016/j.chempr.2020.12.014] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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17
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Perez JDM, Puigcerver J, Orlando T, Pastor A, Martins MAP, Alajarin M, Martinez-Cuezva A, Berna J. Mechanical bonding activation in rotaxane-based organocatalysts. Org Chem Front 2021. [DOI: 10.1039/d1qo00789k] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Interlocked organocatalysts show enhanced catalytic performance when compared with their non-interlocked threads.The ring cooperatively activates the substrates, facilitating the formation and stabilization of catalytically active intermediates.
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Affiliation(s)
- Jesus de Maria Perez
- Departamento de Química Orgánica
- Facultad de Química
- Regional Campus of International Excellence “Campus Mare Nostrum”
- Universidad de Murcia
- Murcia
| | - Julio Puigcerver
- Departamento de Química Orgánica
- Facultad de Química
- Regional Campus of International Excellence “Campus Mare Nostrum”
- Universidad de Murcia
- Murcia
| | - Tainara Orlando
- Núcleo de Química de Heterociclos (NUQUIMHE)
- Departamento de Química
- Universidade Federal de Santa Maria
- 97105-900 Santa Maria-RS
- Brazil
| | - Aurelia Pastor
- Departamento de Química Orgánica
- Facultad de Química
- Regional Campus of International Excellence “Campus Mare Nostrum”
- Universidad de Murcia
- Murcia
| | - Marcos A. P. Martins
- Núcleo de Química de Heterociclos (NUQUIMHE)
- Departamento de Química
- Universidade Federal de Santa Maria
- 97105-900 Santa Maria-RS
- Brazil
| | - Mateo Alajarin
- Departamento de Química Orgánica
- Facultad de Química
- Regional Campus of International Excellence “Campus Mare Nostrum”
- Universidad de Murcia
- Murcia
| | - Alberto Martinez-Cuezva
- Departamento de Química Orgánica
- Facultad de Química
- Regional Campus of International Excellence “Campus Mare Nostrum”
- Universidad de Murcia
- Murcia
| | - Jose Berna
- Departamento de Química Orgánica
- Facultad de Química
- Regional Campus of International Excellence “Campus Mare Nostrum”
- Universidad de Murcia
- Murcia
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18
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Martinez-Cuezva A, Pastor A, Marin-Luna M, Diaz-Marin C, Bautista D, Alajarin M, Berna J. Cyclization of interlocked fumaramides into β-lactams: experimental and computational mechanistic assessment of the key intercomponent proton transfer and the stereocontrolling active pocket. Chem Sci 2020; 12:747-756. [PMID: 34163808 PMCID: PMC8178992 DOI: 10.1039/d0sc05757f] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
A detailed mechanistic study of the diastereoselective CsOH-promoted cyclization of interlocked fumaramides to give β-lactams is described. The mechanistic analysis comprises the experimental evaluation of the structure-reactivity relationship for a wide range of fumaramides [2]rotaxanes (Hammet-plots), KIE studies with deuterium-labelled interlocked fumaramides and computational analysis of two alternative mechanistic pathways for the cyclization process. The obtained results confirm that: (a) the rate-determining step is the deprotonation of the N-benzyl group of the thread by the amidate group of the macrocycle generated by the external base, (b) the polyamide macrocycle plays an important role not only as activating element but also as the stereodifferenciating factor responsible for the observed diastereoselection and (c) the higher flexibility of the adamantyl core speeds up the cyclization process in diadamantyl-derived rotaxanes. A mechanistic study of the diastereoselective cyclization of interlocked fumaramides to give β-lactams unveils the key factors for successfully taming the process.![]()
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Affiliation(s)
- Alberto Martinez-Cuezva
- Department of Organic Chemistry, Faculty of Chemistry, University of Murcia, Regional Campus of International Excellence "Campus Mare Nostrum" 30100 Murcia Spain
| | - Aurelia Pastor
- Department of Organic Chemistry, Faculty of Chemistry, University of Murcia, Regional Campus of International Excellence "Campus Mare Nostrum" 30100 Murcia Spain
| | - Marta Marin-Luna
- Department of Organic Chemistry, Faculty of Chemistry, University of Murcia, Regional Campus of International Excellence "Campus Mare Nostrum" 30100 Murcia Spain
| | - Carmen Diaz-Marin
- Department of Organic Chemistry, Faculty of Chemistry, University of Murcia, Regional Campus of International Excellence "Campus Mare Nostrum" 30100 Murcia Spain
| | | | - Mateo Alajarin
- Department of Organic Chemistry, Faculty of Chemistry, University of Murcia, Regional Campus of International Excellence "Campus Mare Nostrum" 30100 Murcia Spain
| | - Jose Berna
- Department of Organic Chemistry, Faculty of Chemistry, University of Murcia, Regional Campus of International Excellence "Campus Mare Nostrum" 30100 Murcia Spain
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19
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Saura-Sanmartin A, Martinez-Cuezva A, Bautista D, Marzari MRB, Martins MAP, Alajarin M, Berna J. Copper-Linked Rotaxanes for the Building of Photoresponsive Metal Organic Frameworks with Controlled Cargo Delivery. J Am Chem Soc 2020; 142:13442-13449. [PMID: 32646211 DOI: 10.1021/jacs.0c04477] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
We have prepared a photoresponsive metal-organic framework by using an amide-based [2]rotaxane as linker and copper(II) ions as metal nodes. The interlocked linker was obtained by the hydrogen bond-directed approach employing a fumaramide thread as template of the macrocyclic component, this latter incorporating two carboxyl groups. Single crystal X-ray diffraction analysis of the metal-organic framework, prepared under solvothermal conditions, showed the formation of stacked 2D rhombohedral grids forming channels decorated with the interlocked alkenyl threads. A series of metal-organic frameworks differing in the E/Z olefin ratio were prepared either by the previous isomerization of the linker or by postirradiation of the reticulated materials. By dynamic solid state 2H NMR measurements, using deuterium-labeled materials, we proved that the geometry of the olefinic axis of the interlocked struts determined the obtention of materials with different independent local dynamics as a result of the strength of the intercomponent noncovalent interactions. Moreover, the usefulness of these novel copper-rotaxane materials as molecular dosing containers has also been assayed by the diffusion and photorelease of p-benzoquinone, evaluated in different solvents and temperatures.
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Affiliation(s)
- Adrian Saura-Sanmartin
- Departamento de Quimica Organica, Facultad de Quimica, Regional Campus of International Excellence "Campus Mare Nostrum", Universidad de Murcia, Murcia E-30100, Spain
| | - Alberto Martinez-Cuezva
- Departamento de Quimica Organica, Facultad de Quimica, Regional Campus of International Excellence "Campus Mare Nostrum", Universidad de Murcia, Murcia E-30100, Spain
| | - Delia Bautista
- Seccion Universitaria de Instrumentacion Cientifica (SUIC), Area Científica y Tecnica de Investigacion (ACTI), Universidad de Murcia, Murcia E-30100, Spain
| | - Mara R B Marzari
- Nucleo de Quimica de Heterociclos (NUQUIMHE), Departamento de Quimica, Universidad Federal de Santa Maria, Santa Maria-RS 97105-900, Brazil
| | - Marcos A P Martins
- Nucleo de Quimica de Heterociclos (NUQUIMHE), Departamento de Quimica, Universidad Federal de Santa Maria, Santa Maria-RS 97105-900, Brazil
| | - Mateo Alajarin
- Departamento de Quimica Organica, Facultad de Quimica, Regional Campus of International Excellence "Campus Mare Nostrum", Universidad de Murcia, Murcia E-30100, Spain
| | - Jose Berna
- Departamento de Quimica Organica, Facultad de Quimica, Regional Campus of International Excellence "Campus Mare Nostrum", Universidad de Murcia, Murcia E-30100, Spain
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20
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Affiliation(s)
- Alberto Martinez-Cuezva
- Departamento de Quı́mica Orgánica, Facultad de Quı́mica, Regional Campus of International Excellence “Campus Mare Nostrum”, Universidad de Murcia, E-30100 Murcia, Spain
| | - Adrian Saura-Sanmartin
- Departamento de Quı́mica Orgánica, Facultad de Quı́mica, Regional Campus of International Excellence “Campus Mare Nostrum”, Universidad de Murcia, E-30100 Murcia, Spain
| | - Mateo Alajarin
- Departamento de Quı́mica Orgánica, Facultad de Quı́mica, Regional Campus of International Excellence “Campus Mare Nostrum”, Universidad de Murcia, E-30100 Murcia, Spain
| | - Jose Berna
- Departamento de Quı́mica Orgánica, Facultad de Quı́mica, Regional Campus of International Excellence “Campus Mare Nostrum”, Universidad de Murcia, E-30100 Murcia, Spain
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21
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Calles M, Puigcerver J, Alonso DA, Alajarin M, Martinez-Cuezva A, Berna J. Enhancing the selectivity of prolinamide organocatalysts using the mechanical bond in [2]rotaxanes. Chem Sci 2020; 11:3629-3635. [PMID: 34094051 PMCID: PMC8152698 DOI: 10.1039/d0sc00444h] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The synthesis of a pair of switchable interlocked prolinamides and their use as organocatalysts in three different enamine-activated processes are reported. A diacylaminopyridine moiety was incorporated into the thread for directing [2]rotaxane formation further allowing the association of complementary small molecules. The rotaxane-based systems were tested as organocatalysts in asymmetric enamine-mediated processes, revealing a significantly improved catalytic ability if compared with the non-interlocked thread. The presence of an electron-withdrawing nitro group at the macrocycle helps to achieve high conversions and enantioselectivities. These systems are able to interact with N-hexylthymine as a cofactor to form supramolecular catalysts displaying a divergent catalytic behaviour. The presence or absence of the cofactor controls the chemoselectivity in competitive reactions. The mechanical bonding and the cofactor assembly in interlocked prolinamide-based organocatalysts upgrade enamine-type transformations by increasing their yields and enantio- and chemo-selectivities.![]()
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Affiliation(s)
- María Calles
- Departamento de Química Orgánica, Facultad de Química, Regional Campus of International Excellence "Campus Mare Nostrum", Universidad de Murcia E-30100 Murcia Spain
| | - Julio Puigcerver
- Departamento de Química Orgánica, Facultad de Química, Regional Campus of International Excellence "Campus Mare Nostrum", Universidad de Murcia E-30100 Murcia Spain
| | - Diego A Alonso
- Departamento de Química Orgánica, Facultad de Ciencias, Universidad de Alicante E-03080 Alicante Spain
| | - Mateo Alajarin
- Departamento de Química Orgánica, Facultad de Química, Regional Campus of International Excellence "Campus Mare Nostrum", Universidad de Murcia E-30100 Murcia Spain
| | - Alberto Martinez-Cuezva
- Departamento de Química Orgánica, Facultad de Química, Regional Campus of International Excellence "Campus Mare Nostrum", Universidad de Murcia E-30100 Murcia Spain
| | - Jose Berna
- Departamento de Química Orgánica, Facultad de Química, Regional Campus of International Excellence "Campus Mare Nostrum", Universidad de Murcia E-30100 Murcia Spain
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22
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Martinez-Cuezva A, Marin-Luna M, Alonso DA, Ros-Ñiguez D, Alajarin M, Berna J. Interlocking the Catalyst: Thread versus Rotaxane-Mediated Enantiodivergent Michael Addition of Ketones to β-Nitrostyrene. Org Lett 2019; 21:5192-5196. [DOI: 10.1021/acs.orglett.9b01791] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Alberto Martinez-Cuezva
- Departamento de Química Orgánica, Facultad de Química, Regional Campus of International Excellence “Campus Mare Nostrum”, Universidad de Murcia, E-30100 Murcia, Spain
| | - Marta Marin-Luna
- Departamento de Química Orgánica, Universidade de Vigo, Campus Lagoas-Marcosende, E-36310 Vigo, Spain
| | - Diego A. Alonso
- Departamento Química Orgánica e Instituto de Síntesis Orgánica, Facultad de Ciencias, Universidad de Alicante, E-03080 Alicante, Spain
| | - Diego Ros-Ñiguez
- Departamento Química Orgánica e Instituto de Síntesis Orgánica, Facultad de Ciencias, Universidad de Alicante, E-03080 Alicante, Spain
| | - Mateo Alajarin
- Departamento de Química Orgánica, Facultad de Química, Regional Campus of International Excellence “Campus Mare Nostrum”, Universidad de Murcia, E-30100 Murcia, Spain
| | - Jose Berna
- Departamento de Química Orgánica, Facultad de Química, Regional Campus of International Excellence “Campus Mare Nostrum”, Universidad de Murcia, E-30100 Murcia, Spain
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23
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Martinez-Cuezva A, Morales F, Marley GR, Lopez-Lopez A, Martinez-Costa JC, Bautista D, Alajarin M, Berna J. Thermally and Photochemically Induced Dethreading of Fumaramide-Based Kinetically Stable Pseudo[2]rotaxanes. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900073] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Alberto Martinez-Cuezva
- Departamento de Química Orgánica; Facultad de Química; Regional Campus of International Excellence “Campus Mare Nostrum”; Universidad de Murcia; 30100 Murcia Spain
| | - Fatima Morales
- Departamento de Química Orgánica; Facultad de Química; Regional Campus of International Excellence “Campus Mare Nostrum”; Universidad de Murcia; 30100 Murcia Spain
| | - Grace R. Marley
- Departamento de Química Orgánica; Facultad de Química; Regional Campus of International Excellence “Campus Mare Nostrum”; Universidad de Murcia; 30100 Murcia Spain
| | - Adrian Lopez-Lopez
- Departamento de Química Orgánica; Facultad de Química; Regional Campus of International Excellence “Campus Mare Nostrum”; Universidad de Murcia; 30100 Murcia Spain
| | - Juan Carlos Martinez-Costa
- Departamento de Química Orgánica; Facultad de Química; Regional Campus of International Excellence “Campus Mare Nostrum”; Universidad de Murcia; 30100 Murcia Spain
| | | | - Mateo Alajarin
- Departamento de Química Orgánica; Facultad de Química; Regional Campus of International Excellence “Campus Mare Nostrum”; Universidad de Murcia; 30100 Murcia Spain
| | - Jose Berna
- Departamento de Química Orgánica; Facultad de Química; Regional Campus of International Excellence “Campus Mare Nostrum”; Universidad de Murcia; 30100 Murcia Spain
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24
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Martinez-Cuezva A, Lopez-Leonardo C, Alajarin M, Berna J. Stereocontrol in the Synthesis of β-Lactams Arising from the Interlocked Structure of Benzylfumaramide-Based Hydrogen-Bonded [2]Rotaxanes. Synlett 2019. [DOI: 10.1055/s-0037-1611705] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
β-Lactams are highly valuable compounds due to their antibiotic activity. Among the number of well-established methodologies for building this privileged scaffold, our research group has settled on a novel synthetic approach for their preparation. This Account focuses on our latest progress in the synthesis of these compounds through a novel base-promoted intramolecular cyclization of benzylfumaramide-based rotaxanes. The mechanical bond plays a significant role in the process by activating the cyclization inside the macrocycle void, avoiding the formation of byproducts and fully controlling the diastereoselectivity. Further investigations on this transformation led to the formation of enantioenriched 2-azetidinones. The cyclization of enantiopure interlocked α-methylbenzylfumaramides allows the formation of two new stereogenic centers in the lactamic four-membered ring, one of them a quaternary carbon, keeping the initial configuration of the chiral group of the starting material.1 Introduction1.1 Mechanically Interlocked Molecules and Applications1.2 Chemical Stabilization of the Mechanical Bond2 Literature Methods for 4-exo-trig Ring Closures of Fumaramides for the Synthesis of β-Lactams3 Our First Encounter with Interlocked β-Lactams3.1 An Unexpected Result in Our Laboratory3.2 Finding the Optimal Reaction Conditions3.3 Elucidating the Effects of the Mechanical Bond4 Diastereoselective Synthesis of Interlocked and Non-Interlocked β-Lactams5 Asymmetric Cyclization of Enantiopure Interlocked Fumaramides6 Conclusions
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25
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Lopez-Leonardo C, Martinez-Cuezva A, Bautista D, Alajarin M, Berna J. Homo and heteroassembly of amide-based [2]rotaxanes using α,α′-dimethyl-p-xylylenediamines. Chem Commun (Camb) 2019; 55:6787-6790. [DOI: 10.1039/c9cc02701g] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The selective formation of [2]rotaxanes affords two out of seven possible interlocked isomers thanks to a marked conformational preference.
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Affiliation(s)
- C. Lopez-Leonardo
- Departamento de Química Orgánica
- Facultad de Química
- Regional Campus of International Excellence “Campus Mare Nostrum”
- Universidad de Murcia
- Murcia
| | - A. Martinez-Cuezva
- Departamento de Química Orgánica
- Facultad de Química
- Regional Campus of International Excellence “Campus Mare Nostrum”
- Universidad de Murcia
- Murcia
| | | | - M. Alajarin
- Departamento de Química Orgánica
- Facultad de Química
- Regional Campus of International Excellence “Campus Mare Nostrum”
- Universidad de Murcia
- Murcia
| | - J. Berna
- Departamento de Química Orgánica
- Facultad de Química
- Regional Campus of International Excellence “Campus Mare Nostrum”
- Universidad de Murcia
- Murcia
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26
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Martinez‐Cuezva A, Bautista D, Alajarin M, Berna J. Enantioselective Formation of 2‐Azetidinones by Ring‐Assisted Cyclization of Interlocked
N
‐(α‐Methyl)benzyl Fumaramides. Angew Chem Int Ed Engl 2018; 57:6563-6567. [DOI: 10.1002/anie.201803187] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Revised: 04/10/2018] [Indexed: 12/15/2022]
Affiliation(s)
| | | | - Mateo Alajarin
- Departamento de Química OrgánicaFacultad de QuímicaUniversidad de Murcia 30100 Murcia Spain
| | - Jose Berna
- Departamento de Química OrgánicaFacultad de QuímicaUniversidad de Murcia 30100 Murcia Spain
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27
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Amirjalayer S, Martinez-Cuezva A, Berna J, Woutersen S, Buma WJ. Titelbild: Photoinduced Pedalo-Type Motion in an Azodicarboxamide-Based Molecular Switch (Angew. Chem. 7/2018). Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201800060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Saeed Amirjalayer
- Physikalisches Institut and Center for Multiscale Theory and Computation; Westfälische Wilhelms-Universität Münster; Willhelm-Klemm-Strasse 10 48149 Münster Germany
- Center for Nanotechnology (CeNTech); Heisenbergstrasse 11 48149 Münster Germany
| | - Alberto Martinez-Cuezva
- Departamento de Química Orgánica; Facultad de Química; Universidad de Murcia; 30100 Murcia Spain
| | - Jose Berna
- Departamento de Química Orgánica; Facultad de Química; Universidad de Murcia; 30100 Murcia Spain
| | - Sander Woutersen
- Van't Hoff Institute for Molecular Sciences; University of Amsterdam; Science Park 904 1098 XH Amsterdam The Netherlands
| | - Wybren Jan Buma
- Van't Hoff Institute for Molecular Sciences; University of Amsterdam; Science Park 904 1098 XH Amsterdam The Netherlands
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28
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Amirjalayer S, Martinez-Cuezva A, Berna J, Woutersen S, Buma WJ. Cover Picture: Photoinduced Pedalo-Type Motion in an Azodicarboxamide-Based Molecular Switch (Angew. Chem. Int. Ed. 7/2018). Angew Chem Int Ed Engl 2018. [DOI: 10.1002/anie.201800060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Saeed Amirjalayer
- Physikalisches Institut and Center for Multiscale Theory and Computation; Westfälische Wilhelms-Universität Münster; Willhelm-Klemm-Strasse 10 48149 Münster Germany
- Center for Nanotechnology (CeNTech); Heisenbergstrasse 11 48149 Münster Germany
| | - Alberto Martinez-Cuezva
- Departamento de Química Orgánica; Facultad de Química; Universidad de Murcia; 30100 Murcia Spain
| | - Jose Berna
- Departamento de Química Orgánica; Facultad de Química; Universidad de Murcia; 30100 Murcia Spain
| | - Sander Woutersen
- Van't Hoff Institute for Molecular Sciences; University of Amsterdam; Science Park 904 1098 XH Amsterdam The Netherlands
| | - Wybren Jan Buma
- Van't Hoff Institute for Molecular Sciences; University of Amsterdam; Science Park 904 1098 XH Amsterdam The Netherlands
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29
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Amirjalayer S, Martinez‐Cuezva A, Berna J, Woutersen S, Buma WJ. Photoinduced Pedalo-Type Motion in an Azodicarboxamide-Based Molecular Switch. Angew Chem Int Ed Engl 2018; 57:1792-1796. [PMID: 29139183 PMCID: PMC5814897 DOI: 10.1002/anie.201709666] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2017] [Revised: 10/23/2017] [Indexed: 01/05/2023]
Abstract
Well-defined structural changes of molecular units that can be triggered by light are crucial for the development of photoactive functional materials. Herein, we report on a novel switch that has azodicarboxamide as its photo-triggerable element. Time-resolved UV-pump/IR probe spectroscopy in combination with quantum-chemical calculations shows that the azodicarboxamide functionality, in contrast to other azo-based chromophores, does not undergo trans-cis photoisomerization. Instead, a photoinduced pedalo-type motion occurs, which because of its volume-conserving properties enables the design of functional molecular systems with controllable motion in a confined space.
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Affiliation(s)
- Saeed Amirjalayer
- Physikalisches Institut and Center for Multiscale Theory and ComputationWestfälische Wilhelms-Universität MünsterWillhelm-Klemm-Strasse 1048149MünsterGermany
- Center for Nanotechnology (CeNTech)Heisenbergstrasse 1148149MünsterGermany
| | | | - Jose Berna
- Departamento de Química OrgánicaFacultad de QuímicaUniversidad de Murcia30100MurciaSpain
| | - Sander Woutersen
- Van't Hoff Institute for Molecular SciencesUniversity of AmsterdamScience Park 9041098XHAmsterdamThe Netherlands
| | - Wybren Jan Buma
- Van't Hoff Institute for Molecular SciencesUniversity of AmsterdamScience Park 9041098XHAmsterdamThe Netherlands
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30
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Saura-Sanmartin A, Martinez-Cuezva A, Pastor A, Bautista D, Berna J. Light-driven exchange between extended and contracted lasso-like isomers of a bistable [1]rotaxane. Org Biomol Chem 2018; 16:6980-6987. [DOI: 10.1039/c8ob02234h] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A photoactive hydrogen-bonded lasso having an amide-based [1]rotaxane structure has been constructed from acyclic precursors through a self-templating approach. The stability, structural integrity and switching are described.
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Affiliation(s)
- Adrian Saura-Sanmartin
- Departamento de Química Orgánica
- Facultad de Química
- Regional Campus of International Excellence “Campus Mare Nostrum”
- Universidad de Murcia
- Murcia
| | - Alberto Martinez-Cuezva
- Departamento de Química Orgánica
- Facultad de Química
- Regional Campus of International Excellence “Campus Mare Nostrum”
- Universidad de Murcia
- Murcia
| | - Aurelia Pastor
- Departamento de Química Orgánica
- Facultad de Química
- Regional Campus of International Excellence “Campus Mare Nostrum”
- Universidad de Murcia
- Murcia
| | | | - Jose Berna
- Departamento de Química Orgánica
- Facultad de Química
- Regional Campus of International Excellence “Campus Mare Nostrum”
- Universidad de Murcia
- Murcia
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Amirjalayer S, Martinez-Cuezva A, Berna J, Woutersen S, Buma WJ. Photoinduced Pedalo-Type Motion in an Azodicarboxamide-Based Molecular Switch. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201709666] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Saeed Amirjalayer
- Physikalisches Institut and Center for Multiscale Theory and Computation; Westfälische Wilhelms-Universität Münster; Willhelm-Klemm-Strasse 10 48149 Münster Germany
- Center for Nanotechnology (CeNTech); Heisenbergstrasse 11 48149 Münster Germany
| | - Alberto Martinez-Cuezva
- Departamento de Química Orgánica; Facultad de Química; Universidad de Murcia; 30100 Murcia Spain
| | - Jose Berna
- Departamento de Química Orgánica; Facultad de Química; Universidad de Murcia; 30100 Murcia Spain
| | - Sander Woutersen
- Van't Hoff Institute for Molecular Sciences; University of Amsterdam; Science Park 904 1098 XH Amsterdam The Netherlands
| | - Wybren Jan Buma
- Van't Hoff Institute for Molecular Sciences; University of Amsterdam; Science Park 904 1098 XH Amsterdam The Netherlands
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32
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Garcia-Jimenez A, Teruel-Puche JA, Garcia-Ruiz PA, Saura-Sanmartin A, Berna J, Garcia-Canovas F, Rodriguez-Lopez JN. Structural and kinetic considerations on the catalysis of deoxyarbutin by tyrosinase. PLoS One 2017; 12:e0187845. [PMID: 29136639 PMCID: PMC5685642 DOI: 10.1371/journal.pone.0187845] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2017] [Accepted: 10/26/2017] [Indexed: 11/18/2022] Open
Abstract
Deoxyarbutin, a potent inhibitor of tyrosinase, could act as substrate of the enzyme. Oxytyrosinase is able to hydroxylate deoxyarbutin and finishes the catalytic cycle by oxidizing the formed o-diphenol to quinone, while the enzyme becomes deoxytyrosinase, which evolves to oxytyrosinase in the presence of oxygen. This compound is the only one described that does not release o-diphenol after the hydroxylation step. Oxytyrosinase hydroxylates the deoxyarbutin in ortho position of the phenolic hydroxyl group by means of an aromatic electrophilic substitution. As the oxygen orbitals and the copper atoms are not coplanar, but in axial/equatorial position, the concerted oxidation/reduction cannot occur and the release of a copper atom to bind again in coplanar position, enabling the oxidation/reduction or release of the o-diphenol from the active site to the medium. In the case of deoxyarbutin, the o-diphenol formed is repulsed by the water due to its hydrophobicity, and so can bind correctly and be oxidized to a quinone before being released. Deoxyarbutin has been characterized with: [Formula: see text] = 1.95 ± 0.06 s-1 and [Formula: see text] = 33 ± 4 μM. Computational simulations of the interaction of β-arbutin, deoxyarbutin and their o-diphenol products with tyrosinase show how these ligands bind at the copper centre of tyrosinase. The presence of an energy barrier in the release of the o-diphenol product of deoxyarbutin, which is not present in the case of β-arbutin, together with the differences in polarity and, consequently differences in their interaction with water help understand the differences in the kinetic behaviour of both compounds. Therefore, it is proposed that the release of the o-diphenol product of deoxyarbutin from the active site might be slower than in the case of β-arbutin, contributing to its oxidation to a quinone before being released from the protein into the water phase.
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Affiliation(s)
- Antonio Garcia-Jimenez
- GENZ-Group of Research on Enzymology, Department of Biochemistry and Molecular Biology-A, Regional Campus of International Excellence "Campus Mare Nostrum", University of Murcia, Espinardo, Murcia, Spain
| | - Jose Antonio Teruel-Puche
- Group of Molecular Interactions in Membranes, Department of Biochemistry and Molecular Biology-A, University of Murcia, Espinardo, Murcia, Spain
| | - Pedro Antonio Garcia-Ruiz
- Group of Chemistry of Carbohydrates, Industrial Polymers and Additives, Department of Organic Chemistry, Faculty of Veterinary, University of Murcia, Espinardo, Murcia, Spain
| | - Adrian Saura-Sanmartin
- Group of Synthetic Organic Chemistry, Department of Organic Chemistry, Faculty of Chemistry, University of Murcia, Espinardo, Murcia, Spain
| | - Jose Berna
- Group of Synthetic Organic Chemistry, Department of Organic Chemistry, Faculty of Chemistry, University of Murcia, Espinardo, Murcia, Spain
| | - Francisco Garcia-Canovas
- GENZ-Group of Research on Enzymology, Department of Biochemistry and Molecular Biology-A, Regional Campus of International Excellence "Campus Mare Nostrum", University of Murcia, Espinardo, Murcia, Spain
- * E-mail:
| | - José Neptuno Rodriguez-Lopez
- GENZ-Group of Research on Enzymology, Department of Biochemistry and Molecular Biology-A, Regional Campus of International Excellence "Campus Mare Nostrum", University of Murcia, Espinardo, Murcia, Spain
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33
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Garcia-Jimenez A, Teruel-Puche JA, Garcia-Ruiz PA, Saura-Sanmartin A, Berna J, Rodríguez-López JN, Garcia-Canovas F. Action of tyrosinase on caffeic acid and its n-nonyl ester. Catalysis and suicide inactivation. Int J Biol Macromol 2017; 107:2650-2659. [PMID: 29080822 DOI: 10.1016/j.ijbiomac.2017.10.151] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2017] [Revised: 10/24/2017] [Accepted: 10/24/2017] [Indexed: 11/19/2022]
Abstract
Different mechanisms for inhibiting tyrosinase can be designed to avoid postharvest quality losses of fruits and vegetables. The action of tyrosinase on caffeic acid and its n-nonyl ester (n-nonyl caffeate) was characterized kinetically in this work. The results lead us to propose that both compounds are suicide substrates of tyrosinase, for which we establish the catalytic and inactivation efficiencies. The ester is more potent as inactivator than the caffeic acid and the number of turnovers made by one molecule of the enzyme before its inactivation (r) is lower for the ester. We proposed that the anti-browning and antibacterial properties may be due to suicide inactivation processes.
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Affiliation(s)
- Antonio Garcia-Jimenez
- GENZ-Group of research on Enzymology, Department of Biochemistry and Molecular Biology-A, Regional Campus of International Excellence "Campus Mare Nostrum", University of Murcia, E-30100, Espinardo, Murcia, Spain(1)
| | - Jose Antonio Teruel-Puche
- Group of Molecular Interactions in Membranes, Department of Biochemistry and Molecular Biology-A, University of Murcia, E-30100, Espinardo, Murcia, Spain
| | - Pedro Antonio Garcia-Ruiz
- University of Murcia, Faculty of Veterinary, Group of Chemistry of Carbohydrates, Industrial Polymers and Additives, Department of Organic Chemistry, E-30100 Murcia, Spain
| | - Adrian Saura-Sanmartin
- Group of Synthetic Organic Chemistry, Department of Organic Chemistry, Faculty of Chemistry, University of Murcia, E-30100 Espinardo, Murcia, Spain
| | - Jose Berna
- Group of Synthetic Organic Chemistry, Department of Organic Chemistry, Faculty of Chemistry, University of Murcia, E-30100 Espinardo, Murcia, Spain
| | - Jose Neptuno Rodríguez-López
- GENZ-Group of research on Enzymology, Department of Biochemistry and Molecular Biology-A, Regional Campus of International Excellence "Campus Mare Nostrum", University of Murcia, E-30100, Espinardo, Murcia, Spain(1)
| | - Francisco Garcia-Canovas
- GENZ-Group of research on Enzymology, Department of Biochemistry and Molecular Biology-A, Regional Campus of International Excellence "Campus Mare Nostrum", University of Murcia, E-30100, Espinardo, Murcia, Spain(1).
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Saura-Sanmartin A, Martinez-Espin JS, Martinez-Cuezva A, Alajarin M, Berna J. Effects on Rotational Dynamics of Azo and Hydrazodicarboxamide-Based Rotaxanes. Molecules 2017; 22:molecules22071078. [PMID: 28657603 PMCID: PMC6152038 DOI: 10.3390/molecules22071078] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2017] [Revised: 06/26/2017] [Accepted: 06/26/2017] [Indexed: 12/25/2022] Open
Abstract
The synthesis of novel hydrogen-bonded [2]rotaxanes having two pyridine rings in the macrocycle and azo- and hydrazodicarboxamide-based templates decorated with four cyclohexyl groups is described. The different affinity of the binding sites for the benzylic amide macrocycle and the formation of programmed non-covalent interactions between the interlocked components have an important effect on the dynamic behavior of these compounds. Having this in mind, the chemical interconversion between the azo and hydrazo forms of the [2]rotaxane was investigated to provide a chemically-driven interlocked system enable to switch its circumrotation rate as a function of the oxidation level of the binding site. Different structural modifications were carried out to further functionalize the nitrogen of the pyridine rings, including oxidation, alkylation or protonation reactions, affording interlocked azo-derivatives whose rotation dynamics were also analyzed.
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Affiliation(s)
- Adrian Saura-Sanmartin
- Departamento de Química Orgánica, Facultad de Química, Regional Campus of International Excellence "Campus Mare Nostrum", Universidad de Murcia, 30100 Murcia, Spain.
| | - Juan S Martinez-Espin
- Departamento de Química Orgánica, Facultad de Química, Regional Campus of International Excellence "Campus Mare Nostrum", Universidad de Murcia, 30100 Murcia, Spain.
| | - Alberto Martinez-Cuezva
- Departamento de Química Orgánica, Facultad de Química, Regional Campus of International Excellence "Campus Mare Nostrum", Universidad de Murcia, 30100 Murcia, Spain.
| | - Mateo Alajarin
- Departamento de Química Orgánica, Facultad de Química, Regional Campus of International Excellence "Campus Mare Nostrum", Universidad de Murcia, 30100 Murcia, Spain.
| | - Jose Berna
- Departamento de Química Orgánica, Facultad de Química, Regional Campus of International Excellence "Campus Mare Nostrum", Universidad de Murcia, 30100 Murcia, Spain.
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Garcia-Jimenez A, Teruel-Puche JA, Berna J, Rodriguez-Lopez JN, Tudela J, Garcia-Canovas F. Action of tyrosinase on alpha and beta-arbutin: A kinetic study. PLoS One 2017; 12:e0177330. [PMID: 28493937 PMCID: PMC5426667 DOI: 10.1371/journal.pone.0177330] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2017] [Accepted: 04/17/2017] [Indexed: 11/18/2022] Open
Abstract
The known derivatives from hydroquinone, α and β-arbutin, are used as depigmenting agents. In this work, we demonstrate that the oxy form of tyrosinase (oxytyrosinase) hydroxylates α and β-arbutin in ortho position of the phenolic hydroxyl group, giving rise to a complex formed by met-tyrosinase with the hydroxylated α or β-arbutin. This complex could evolve in two ways: by oxidizing the originated o-diphenol to o-quinone and deoxy-tyrosinase, or by delivering the o-diphenol and met-tyrosinase to the medium, which would produce the self-activation of the system. Note that the quinones generated in both cases are unstable, so the catalysis cannot be studied quantitatively. However, if 3-methyl-2-benzothiazolinone hydrazone hydrochloride hydrate is used, the o-quinone is attacked, so that it becomes an adduct, which can be oxidized by another molecule of o-quinone, generating o-diphenol in the medium. In this way, the system reaches the steady state and originates a chromophore, which, in turn, has a high absorptivity in the visible spectrum. This reaction allowed us to characterize α and β-arbutin kinetically as substrates of tyrosinase for the first time, obtaining a Michaelis constant values of 6.5 ± 0.58 mM and 3 ± 0.19 mM, respectively. The data agree with those from docking studies that showed that the enzyme has a higher affinity for β-arbutin. Moreover, the catalytic constants obtained by the kinetic studies (catalytic constant = 4.43 ± 0.33 s-1 and 3.7 ± 0.29 s-1 for α and β-arbutin respectively) agree with our forecast based on 13 C NMR considerations. This kinetic characterization of α and β-arbutin as substrates of tyrosinase should be taken into account to explain possible adverse effects of these compounds.
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Affiliation(s)
- Antonio Garcia-Jimenez
- GENZ-Group of research on Enzymology, Department of Biochemistry and Molecular Biology-A, Regional Campus of International Excellence "Campus Mare Nostrum", University of Murcia, Espinardo, Murcia, Spain
| | - Jose Antonio Teruel-Puche
- Group of Molecular Interactions in Membranes, Department of Biochemistry and Molecular Biology-A, University of Murcia, Espinardo, Murcia, Spain
| | - Jose Berna
- Group of Synthetic Organic Chemistry, Department of Organic Chemistry, Faculty of Chemistry, University of Murcia, Espinardo, Murcia, Spain
| | - José Neptuno Rodriguez-Lopez
- GENZ-Group of research on Enzymology, Department of Biochemistry and Molecular Biology-A, Regional Campus of International Excellence "Campus Mare Nostrum", University of Murcia, Espinardo, Murcia, Spain
| | - Jose Tudela
- GENZ-Group of research on Enzymology, Department of Biochemistry and Molecular Biology-A, Regional Campus of International Excellence "Campus Mare Nostrum", University of Murcia, Espinardo, Murcia, Spain
| | - Francisco Garcia-Canovas
- GENZ-Group of research on Enzymology, Department of Biochemistry and Molecular Biology-A, Regional Campus of International Excellence "Campus Mare Nostrum", University of Murcia, Espinardo, Murcia, Spain
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Martinez-Cuezva A, Saura-Sanmartin A, Nicolas-Garcia T, Navarro C, Orenes RA, Alajarin M, Berna J. Photoswitchable interlocked thiodiglycolamide as a cocatalyst of a chalcogeno-Baylis-Hillman reaction. Chem Sci 2017; 8:3775-3780. [PMID: 28580109 PMCID: PMC5436546 DOI: 10.1039/c7sc00724h] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2017] [Accepted: 03/07/2017] [Indexed: 11/24/2022] Open
Abstract
En route to a photoswitchable interlocked catalyst we have proved the ability of thiodiglycolamide to act as a template in the formation of hydrogen-bonded [2]rotaxanes. X-ray diffraction studies reveal the shielding of the sulfide atom by the macrocycle. A series of molecular shuttles are described as having an isomerizable fumaramide and thiodiglycolamide binding sites for controlling the relative ring position at will. By employing these systems as photoregulated catalysts, the TiCl4-mediated chalcogeno-Morita-Baylis-Hillman reaction is tested. In the presence of the maleamide shuttle, in which the sulfide function is encapsulated by the macrocycle, a complete loss in control of the geometry of the produced aldol is observed. The E-aldol adduct is predominantly obtained when the photoisomerized fumaramide shuttle, in which the sulfide function is exposed, is used.
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Affiliation(s)
- Alberto Martinez-Cuezva
- Departamento de Química Orgánica , Facultad de Química , Regional Campus of International Excellence "Campus Mare Nostrum" , Universidad de Murcia , E-30100 , Murcia , Spain .
| | - Adrian Saura-Sanmartin
- Departamento de Química Orgánica , Facultad de Química , Regional Campus of International Excellence "Campus Mare Nostrum" , Universidad de Murcia , E-30100 , Murcia , Spain .
| | - Tomas Nicolas-Garcia
- Departamento de Química Orgánica , Facultad de Química , Regional Campus of International Excellence "Campus Mare Nostrum" , Universidad de Murcia , E-30100 , Murcia , Spain .
| | - Cristian Navarro
- Departamento de Química Orgánica , Facultad de Química , Regional Campus of International Excellence "Campus Mare Nostrum" , Universidad de Murcia , E-30100 , Murcia , Spain .
| | | | - Mateo Alajarin
- Departamento de Química Orgánica , Facultad de Química , Regional Campus of International Excellence "Campus Mare Nostrum" , Universidad de Murcia , E-30100 , Murcia , Spain .
| | - Jose Berna
- Departamento de Química Orgánica , Facultad de Química , Regional Campus of International Excellence "Campus Mare Nostrum" , Universidad de Murcia , E-30100 , Murcia , Spain .
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37
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Garcia-Jimenez A, Teruel-Puche JA, Garcia-Ruiz PA, Berna J, Rodríguez-López JN, Tudela J, Garcia-Canovas F. Action of 2,2',4,4'-tetrahydroxybenzophenone in the biosynthesis pathway of melanin. Int J Biol Macromol 2017; 98:622-629. [PMID: 28192140 DOI: 10.1016/j.ijbiomac.2017.02.032] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2016] [Revised: 02/06/2017] [Accepted: 02/08/2017] [Indexed: 11/16/2022]
Abstract
2,2',4,4'-tetrahydroxybenzophenone (Uvinul D50), a sunscreen used in cosmetics, has two effects in the melanin biosynthesis pathway. On the one hand, it acts a weak inhibitor of tyrosinase and on the other, it accelerates the conversion of dopachrome to melanin. Uvinul D50 was seen to behave as a weak competitive inhibitor: apparent constant inhibition=2.02±0.09mM and IC50=3.82±0.39mM established in this work. These values are higher than those in the bibliography, which tend to be undersetimated. This discrepancy could be explained by the reaction of Uvinul D50 with the dopachrome produced from l-tyrosine or l-dopa, which would interfere in the measurement. Based on studies of its docking to tyrosinase, it seems that Uvinul D50 interacts with the active site of the enzyme (oxytyrosinase) both in its protonated and deprotonated forms (pKa=7). However, it cannot be hydroxylated, meaning that it acts as a weak inhibitor, not as an alternative substrate, despite its resorcinol structure. Uvinul D50 can be used as sunscreen, in low concentrations without significant adverse effects on melanogenesis.
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Affiliation(s)
- Antonio Garcia-Jimenez
- GENZ-Group of Research on Enzymology(1), Department of Biochemistry and Molecular Biology-A, Regional Campus of International Excellence "Campus Mare Nostrum", University of Murcia, E-30100, Espinardo, Murcia, Spain
| | - Jose Antonio Teruel-Puche
- Group of Molecular Interactions in Membranes, Department of Biochemistry and Molecular Biology-A, University of Murcia, E-30100, Espinardo, Murcia, Spain
| | - Pedro Antonio Garcia-Ruiz
- University of Murcia, Faculty of Veterinary, Group of Chemistry of Carbohydrates, Industrial Polymers and Additives, Department of Organic Chemistry, 30100 Murcia, Spain
| | - Jose Berna
- Group of Synthetic Organic Chemistry, Department of Organic Chemistry, Faculty of Chemistry, University of Murcia, E-30100, Espinardo, Murcia, Spain
| | - Jose Neptuno Rodríguez-López
- GENZ-Group of Research on Enzymology(1), Department of Biochemistry and Molecular Biology-A, Regional Campus of International Excellence "Campus Mare Nostrum", University of Murcia, E-30100, Espinardo, Murcia, Spain
| | - Jose Tudela
- GENZ-Group of Research on Enzymology(1), Department of Biochemistry and Molecular Biology-A, Regional Campus of International Excellence "Campus Mare Nostrum", University of Murcia, E-30100, Espinardo, Murcia, Spain
| | - Francisco Garcia-Canovas
- GENZ-Group of Research on Enzymology(1), Department of Biochemistry and Molecular Biology-A, Regional Campus of International Excellence "Campus Mare Nostrum", University of Murcia, E-30100, Espinardo, Murcia, Spain.
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38
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Martins MAP, Zimmer GC, Rodrigues LV, Orlando T, Buriol L, Alajarin M, Berna J, Frizzo CP, Bonacorso HG, Zanatta N. Competition between the donor and acceptor hydrogen bonds of the threads in the formation of [2]rotaxanes by clipping reaction. NEW J CHEM 2017. [DOI: 10.1039/c7nj02443f] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
The steric effect of thet-butyl group of 1′5′-thread prevents the formation of [2]rotaxane. On the other hand, the 1′3′-thread acts a template to obtain [2]rotaxanes.
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Affiliation(s)
- Marcos A. P. Martins
- Núcleo de Química de Heterociclos (NUQUIMHE), Departamento de Química, Universidade Federal de Santa Maria
- 97105-900 Santa Maria
- Brazil
| | - Geórgia C. Zimmer
- Núcleo de Química de Heterociclos (NUQUIMHE), Departamento de Química, Universidade Federal de Santa Maria
- 97105-900 Santa Maria
- Brazil
| | - Leticia V. Rodrigues
- Núcleo de Química de Heterociclos (NUQUIMHE), Departamento de Química, Universidade Federal de Santa Maria
- 97105-900 Santa Maria
- Brazil
| | - Tainára Orlando
- Núcleo de Química de Heterociclos (NUQUIMHE), Departamento de Química, Universidade Federal de Santa Maria
- 97105-900 Santa Maria
- Brazil
| | - Lilian Buriol
- Núcleo de Química de Heterociclos (NUQUIMHE), Departamento de Química, Universidade Federal de Santa Maria
- 97105-900 Santa Maria
- Brazil
| | - Mateo Alajarin
- Departamento de Química Orgánica, Facultad de Química, Universidad de Murcia
- E-30100 Murcia
- Spain
| | - Jose Berna
- Departamento de Química Orgánica, Facultad de Química, Universidad de Murcia
- E-30100 Murcia
- Spain
| | - Clarissa P. Frizzo
- Núcleo de Química de Heterociclos (NUQUIMHE), Departamento de Química, Universidade Federal de Santa Maria
- 97105-900 Santa Maria
- Brazil
| | - Helio G. Bonacorso
- Núcleo de Química de Heterociclos (NUQUIMHE), Departamento de Química, Universidade Federal de Santa Maria
- 97105-900 Santa Maria
- Brazil
| | - Nilo Zanatta
- Núcleo de Química de Heterociclos (NUQUIMHE), Departamento de Química, Universidade Federal de Santa Maria
- 97105-900 Santa Maria
- Brazil
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Tron A, Pianet I, Martinez-Cuezva A, Tucker JHR, Pisciottani L, Alajarin M, Berna J, McClenaghan ND. Remote Photoregulated Ring Gliding in a [2]Rotaxane via a Molecular Effector. Org Lett 2016; 19:154-157. [DOI: 10.1021/acs.orglett.6b03457] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Arnaud Tron
- Institut
des Sciences Moléculaires, CNRS UMR 5255, Université de Bordeaux, 33405 Talence, France
| | - Isabelle Pianet
- Institut
des Sciences Moléculaires, CNRS UMR 5255, Université de Bordeaux, 33405 Talence, France
| | - Alberto Martinez-Cuezva
- Departamento
de Química Orgánica, Facultad de Química, Universidad de Murcia, E-30100 Murcia, Spain
| | - James H. R. Tucker
- School
of Chemistry, University of Birmingham, Edgbaston, Birmingham B15 2TT, United Kingdom
| | - Luca Pisciottani
- Institut
des Sciences Moléculaires, CNRS UMR 5255, Université de Bordeaux, 33405 Talence, France
| | - Mateo Alajarin
- Departamento
de Química Orgánica, Facultad de Química, Universidad de Murcia, E-30100 Murcia, Spain
| | - Jose Berna
- Departamento
de Química Orgánica, Facultad de Química, Universidad de Murcia, E-30100 Murcia, Spain
| | - Nathan D. McClenaghan
- Institut
des Sciences Moléculaires, CNRS UMR 5255, Université de Bordeaux, 33405 Talence, France
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Garcia-Jimenez A, Teruel-Puche JA, Ortiz-Ruiz CV, Berna J, Tudela J, Garcia-Canovas F. Study of the inhibition of 3-/4-aminoacetophenones on tyrosinase. Reac Kinet Mech Cat 2016. [DOI: 10.1007/s11144-016-1106-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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41
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Martinez-Cuezva A, Lopez-Leonardo C, Bautista D, Alajarin M, Berna J. Stereocontrolled Synthesis of β-Lactams within [2]Rotaxanes: Showcasing the Chemical Consequences of the Mechanical Bond. J Am Chem Soc 2016; 138:8726-9. [PMID: 27355271 DOI: 10.1021/jacs.6b05581] [Citation(s) in RCA: 61] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The intramolecular cyclization of N-benzylfumaramide [2]rotaxanes is described. The mechanical bond of these substrates activates this transformation to proceed in high yields and in a regio- and diastereoselective manner, giving interlocked 3,4-disubstituted trans-azetidin-2-ones. This activation effect markedly differs from the more common shielding protection of threaded functions by the macrocycle, in this case promoting an unusual and disfavored 4-exo-trig ring closure. Kinetic and synthetic studies allowed us to delineate an advantageous approach toward β-lactams based on a two-step, one-pot protocol: an intramolecular ring closure followed by a thermally induced dethreading step. The advantages of carrying out this cyclization in the confined space of a benzylic amide macrocycle are attributed to its anchimeric assistance.
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Affiliation(s)
- Alberto Martinez-Cuezva
- Departamento de Química Orgánica, Facultad de Química, and ‡Sección Universitaria de Instrumentación Científica, Servicio de Apoyo a la Investigación, Regional Campus of International Excellence "Campus Mare Nostrum", Universidad de Murcia , E-30100 Murcia, Spain
| | - Carmen Lopez-Leonardo
- Departamento de Química Orgánica, Facultad de Química, and ‡Sección Universitaria de Instrumentación Científica, Servicio de Apoyo a la Investigación, Regional Campus of International Excellence "Campus Mare Nostrum", Universidad de Murcia , E-30100 Murcia, Spain
| | - Delia Bautista
- Departamento de Química Orgánica, Facultad de Química, and ‡Sección Universitaria de Instrumentación Científica, Servicio de Apoyo a la Investigación, Regional Campus of International Excellence "Campus Mare Nostrum", Universidad de Murcia , E-30100 Murcia, Spain
| | - Mateo Alajarin
- Departamento de Química Orgánica, Facultad de Química, and ‡Sección Universitaria de Instrumentación Científica, Servicio de Apoyo a la Investigación, Regional Campus of International Excellence "Campus Mare Nostrum", Universidad de Murcia , E-30100 Murcia, Spain
| | - Jose Berna
- Departamento de Química Orgánica, Facultad de Química, and ‡Sección Universitaria de Instrumentación Científica, Servicio de Apoyo a la Investigación, Regional Campus of International Excellence "Campus Mare Nostrum", Universidad de Murcia , E-30100 Murcia, Spain
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Garcia-Jimenez A, Teruel-Puche JA, Ortiz-Ruiz CV, Berna J, Tudela J, Garcia-Canovas F. 4-n-butylresorcinol, a depigmenting agent used in cosmetics, reacts with tyrosinase. IUBMB Life 2016; 68:663-72. [DOI: 10.1002/iub.1528] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2016] [Accepted: 06/06/2016] [Indexed: 01/19/2023]
Affiliation(s)
- Antonio Garcia-Jimenez
- Department of Biochemistry and Molecular Biology-A, GENZ-Group of Research on Enzymology (www.um.es/genz), Regional Campus of International Excellence “Campus Mare Nostrum,”; University of Murcia; Espinardo, Murcia Spain
| | - Jose Antonio Teruel-Puche
- Department of Biochemistry and Molecular Biology-A, Group of Molecular Interactions in Membranes; University of Murcia; Espinardo, Murcia Spain
| | - Carmen Vanessa Ortiz-Ruiz
- Department of Biochemistry and Molecular Biology-A, GENZ-Group of Research on Enzymology (www.um.es/genz), Regional Campus of International Excellence “Campus Mare Nostrum,”; University of Murcia; Espinardo, Murcia Spain
| | - Jose Berna
- Department of Organic Chemistry, Faculty of Chemistry, Group of Synthetic Organic Chemistry; University of Murcia; Espinardo, Murcia Spain
| | - Jose Tudela
- Department of Biochemistry and Molecular Biology-A, GENZ-Group of Research on Enzymology (www.um.es/genz), Regional Campus of International Excellence “Campus Mare Nostrum,”; University of Murcia; Espinardo, Murcia Spain
| | - Francisco Garcia-Canovas
- Department of Biochemistry and Molecular Biology-A, GENZ-Group of Research on Enzymology (www.um.es/genz), Regional Campus of International Excellence “Campus Mare Nostrum,”; University of Murcia; Espinardo, Murcia Spain
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Maria-Solano MA, Ortiz-Ruiz CV, Muñoz-Muñoz JL, Teruel-Puche JA, Berna J, Garcia-Ruiz PA, Garcia-Canovas F. Further insight into the pH effect on the catalysis of mushroom tyrosinase. ACTA ACUST UNITED AC 2016. [DOI: 10.1016/j.molcatb.2015.12.008] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Martinez-Cuezva A, Carro-Guillen F, Pastor A, Marin-Luna M, Orenes RA, Alajarin M, Berna J. Co-conformational Exchange Triggered by Molecular Recognition in a Di(acylamino)pyridine-Based Molecular Shuttle Containing Two Pyridine Rings at the Macrocycle. Chemphyschem 2016; 17:1920-6. [DOI: 10.1002/cphc.201501060] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2015] [Indexed: 11/10/2022]
Affiliation(s)
- Alberto Martinez-Cuezva
- Departamento de Química Organica, Facultad de Quimica, Regional Campus of International Excellence “Campus Mare Nostrum”; Universidad de Murcia; E-30100 Murcia Spain
| | - Fernando Carro-Guillen
- Departamento de Química Organica, Facultad de Quimica, Regional Campus of International Excellence “Campus Mare Nostrum”; Universidad de Murcia; E-30100 Murcia Spain
| | - Aurelia Pastor
- Departamento de Química Organica, Facultad de Quimica, Regional Campus of International Excellence “Campus Mare Nostrum”; Universidad de Murcia; E-30100 Murcia Spain
| | - Marta Marin-Luna
- Instituto de Química Médica (CSIC); Juan de la Cierva 3 E-28006 Madrid Spain
| | | | - Mateo Alajarin
- Departamento de Química Organica, Facultad de Quimica, Regional Campus of International Excellence “Campus Mare Nostrum”; Universidad de Murcia; E-30100 Murcia Spain
| | - Jose Berna
- Departamento de Química Organica, Facultad de Quimica, Regional Campus of International Excellence “Campus Mare Nostrum”; Universidad de Murcia; E-30100 Murcia Spain
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Ortiz-Ruiz CV, Ballesta de Los Santos M, Berna J, Fenoll J, Garcia-Ruiz PA, Tudela J, Garcia-Canovas F. Kinetic characterization of oxyresveratrol as a tyrosinase substrate. IUBMB Life 2015; 67:828-36. [PMID: 26450473 DOI: 10.1002/iub.1439] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2015] [Accepted: 09/18/2015] [Indexed: 12/28/2022]
Abstract
Oxyresveratrol is a stilbenoid described as a powerful inhibitor of tyrosinase and proposed as skin-whitening and anti-browning agent. However, the enzyme is capable of acting on it, considering it as a substrate, as it has been proved in the case of its analogous resveratrol. Tyrosinase hydroxylates the oxyresveratrol to an o-diphenol and oxidizes the latter to an o-quinone, which finally isomerizes to p-quinone. For these reactions to take place the presence of the Eox (oxy-tyrosinase) form is necessary. The kinetic analysis of the proposed mechanism has allowed the kinetic characterization of this molecule as a substrate of tyrosinase, affording a catalytic constant of 5.39 ± 0.21 sec(-1) and a Michaelis constant of 8.65 ± 0.73 µM.
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Affiliation(s)
- Carmen Vanessa Ortiz-Ruiz
- GENZ: Grupo De Investigación Enzimología, Departamento De Bioquímica Y Biología Molecular-A, Facultad De Biología, Campus De Excelencia Internacional "Mare Nostrum", Universidad De Murcia, Murcia, Spain
| | - Manuel Ballesta de Los Santos
- GENZ: Grupo De Investigación Enzimología, Departamento De Bioquímica Y Biología Molecular-A, Facultad De Biología, Campus De Excelencia Internacional "Mare Nostrum", Universidad De Murcia, Murcia, Spain
| | - Jose Berna
- Grupo De Química Orgánica Sintética. Departamento De Química Orgánica. Facultad De Química, Campus De Excelencia Internacional "Mare Nostrum", Universidad De Murcia, Murcia, Spain
| | - Jose Fenoll
- IMIDA: Instituto Murciano De Investigación Y Desarrollo Agrario Y Alimentario, Murcia, Spain
| | - Pedro Antonio Garcia-Ruiz
- QCPAI: Grupo De Química De Carbohidratos, Polímeros Y Aditivos Industriales, Departamento De Química Orgánica. Facultad De Química, Campus De Excelencia Internacional "Mare Nostrum", Universidad De Murcia, Murcia, Spain
| | - Jose Tudela
- GENZ: Grupo De Investigación Enzimología, Departamento De Bioquímica Y Biología Molecular-A, Facultad De Biología, Campus De Excelencia Internacional "Mare Nostrum", Universidad De Murcia, Murcia, Spain
| | - Francisco Garcia-Canovas
- GENZ: Grupo De Investigación Enzimología, Departamento De Bioquímica Y Biología Molecular-A, Facultad De Biología, Campus De Excelencia Internacional "Mare Nostrum", Universidad De Murcia, Murcia, Spain
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Martinez-Cuezva A, Rodrigues LV, Navarro C, Carro-Guillen F, Buriol L, Frizzo CP, Martins MAP, Alajarin M, Berna J. Dethreading of Tetraalkylsuccinamide-Based [2]Rotaxanes for Preparing Benzylic Amide Macrocycles. J Org Chem 2015; 80:10049-59. [DOI: 10.1021/acs.joc.5b01651] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Alberto Martinez-Cuezva
- Departamento
de Química Orgánica, Facultad de Química, Regional
Campus of International Excellence “Campus Mare Nostrum”, Universidad de Murcia, E-30100 Murcia, Spain
| | - Leticia V. Rodrigues
- Núcleo
de Química de Heterociclos (NUQUIMHE), Departamento de Química, Universidade Federal de Santa Maria, 97105-900 Santa Maria-RS, Brazil
| | - Cristian Navarro
- Departamento
de Química Orgánica, Facultad de Química, Regional
Campus of International Excellence “Campus Mare Nostrum”, Universidad de Murcia, E-30100 Murcia, Spain
| | - Fernando Carro-Guillen
- Departamento
de Química Orgánica, Facultad de Química, Regional
Campus of International Excellence “Campus Mare Nostrum”, Universidad de Murcia, E-30100 Murcia, Spain
| | - Lilian Buriol
- Núcleo
de Química de Heterociclos (NUQUIMHE), Departamento de Química, Universidade Federal de Santa Maria, 97105-900 Santa Maria-RS, Brazil
| | - Clarissa P. Frizzo
- Núcleo
de Química de Heterociclos (NUQUIMHE), Departamento de Química, Universidade Federal de Santa Maria, 97105-900 Santa Maria-RS, Brazil
| | - Marcos A. P. Martins
- Núcleo
de Química de Heterociclos (NUQUIMHE), Departamento de Química, Universidade Federal de Santa Maria, 97105-900 Santa Maria-RS, Brazil
| | - Mateo Alajarin
- Departamento
de Química Orgánica, Facultad de Química, Regional
Campus of International Excellence “Campus Mare Nostrum”, Universidad de Murcia, E-30100 Murcia, Spain
| | - Jose Berna
- Departamento
de Química Orgánica, Facultad de Química, Regional
Campus of International Excellence “Campus Mare Nostrum”, Universidad de Murcia, E-30100 Murcia, Spain
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Ortiz-Ruiz CV, Berna J, Rodriguez-Lopez JN, Tomas V, Garcia-Canovas F. Tyrosinase-Catalyzed Hydroxylation of 4-Hexylresorcinol, an Antibrowning and Depigmenting Agent: A Kinetic Study. J Agric Food Chem 2015; 63:7032-7040. [PMID: 26176355 DOI: 10.1021/acs.jafc.5b02523] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
4-Hexylresorcinol (HR) is a compound used in the food and cosmetic industries as an antibrowning and lightening agent. Its use is mainly attributed to its inhibitory effect on the enzyme tyrosinase. However, the enzyme hydroxylates HR to an o-diphenol, which it then oxidizes to an o-quinone, which rapidly isomerizes to p-quinone. For tyrosinase to act in this way, the Eox form (oxy-tyrosinase) must be present in the reaction medium, which can be brought about by (a) hydrogen peroxide, (b) ascorbic acid, or (c) catalytic concentrations of o-diphenol and a reductant (NADH) to maintain it constant. This work demonstrates that HR is a substrate of tyrosinase and proposes a mechanism for its action. Its kinetic characterization provides a catalytic constant of 0.85 ± 0.04 s(-1) and a Michaelis constant of 60.31 ± 6.73 μM.
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Affiliation(s)
- Carmen Vanessa Ortiz-Ruiz
- †GENZ-Group of Research on Enzymology, Department of Biochemistry and Molecular Biology-A, ‡Group of Synthetic Organic Chemistry, Department of Organic Chemistry, and #Department of Analytical Chemistry, Regional Campus of International Excellence "Campus Mare Nostrum", University of Murcia, 30071 Murcia, Spain
| | - Jose Berna
- †GENZ-Group of Research on Enzymology, Department of Biochemistry and Molecular Biology-A, ‡Group of Synthetic Organic Chemistry, Department of Organic Chemistry, and #Department of Analytical Chemistry, Regional Campus of International Excellence "Campus Mare Nostrum", University of Murcia, 30071 Murcia, Spain
| | - Jose Neptuno Rodriguez-Lopez
- †GENZ-Group of Research on Enzymology, Department of Biochemistry and Molecular Biology-A, ‡Group of Synthetic Organic Chemistry, Department of Organic Chemistry, and #Department of Analytical Chemistry, Regional Campus of International Excellence "Campus Mare Nostrum", University of Murcia, 30071 Murcia, Spain
| | - Virginia Tomas
- †GENZ-Group of Research on Enzymology, Department of Biochemistry and Molecular Biology-A, ‡Group of Synthetic Organic Chemistry, Department of Organic Chemistry, and #Department of Analytical Chemistry, Regional Campus of International Excellence "Campus Mare Nostrum", University of Murcia, 30071 Murcia, Spain
| | - Francisco Garcia-Canovas
- †GENZ-Group of Research on Enzymology, Department of Biochemistry and Molecular Biology-A, ‡Group of Synthetic Organic Chemistry, Department of Organic Chemistry, and #Department of Analytical Chemistry, Regional Campus of International Excellence "Campus Mare Nostrum", University of Murcia, 30071 Murcia, Spain
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48
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Ortiz-Ruiz CV, Berna J, Garcia-Molina MDM, Tudela J, Tomas V, Garcia-Canovas F. Identification of p-hydroxybenzyl alcohol, tyrosol, phloretin and its derivate phloridzin as tyrosinase substrates. Bioorg Med Chem 2015; 23:3738-46. [DOI: 10.1016/j.bmc.2015.04.016] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2015] [Revised: 03/27/2015] [Accepted: 04/02/2015] [Indexed: 11/30/2022]
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Martinez-Cuezva A, Pastor A, Cioncoloni G, Orenes RA, Alajarin M, Symes MD, Berna J. Versatile control of the submolecular motion of di(acylamino)pyridine-based [2]rotaxanes. Chem Sci 2015; 6:3087-3094. [PMID: 28706682 PMCID: PMC5490047 DOI: 10.1039/c5sc00790a] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2015] [Accepted: 03/18/2015] [Indexed: 11/21/2022] Open
Abstract
A cyclic network of chemical reactions has been conceived for exchanging the dynamic behaviour of di(acylamino)pyridine-based rotaxanes and surrogates. X-ray diffraction studies revealed the intercomponent interactions in these interlocked compounds and were consistent with those found in solution by dynamic NMR experiments. This particular binding site was incorporated into a molecular shuttle enabled for accessing two states with an outstanding positional discrimination through chemical manipulation. Furthermore, the ability of the di(acylamino)pyridine domain to associate with external binders with a complementary array of HB donor and acceptor sites was exploited for the advance of an unprecedented electrochemical switch operating through a reversible anion radical recognition process.
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Affiliation(s)
- Alberto Martinez-Cuezva
- Departamento de Química Orgánica , Facultad de Química , Regional Campus of International Excellence "Campus Mare Nostrum" , Universidad de Murcia , E-30100 , Murcia , Spain .
| | - Aurelia Pastor
- Departamento de Química Orgánica , Facultad de Química , Regional Campus of International Excellence "Campus Mare Nostrum" , Universidad de Murcia , E-30100 , Murcia , Spain .
| | - Giacomo Cioncoloni
- WestCHEM , School of Chemistry , University of Glasgow , University Avenue , Glasgow G12 8QQ , UK
| | | | - Mateo Alajarin
- Departamento de Química Orgánica , Facultad de Química , Regional Campus of International Excellence "Campus Mare Nostrum" , Universidad de Murcia , E-30100 , Murcia , Spain .
| | - Mark D Symes
- WestCHEM , School of Chemistry , University of Glasgow , University Avenue , Glasgow G12 8QQ , UK
| | - Jose Berna
- Departamento de Química Orgánica , Facultad de Química , Regional Campus of International Excellence "Campus Mare Nostrum" , Universidad de Murcia , E-30100 , Murcia , Spain .
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Martinez-Cuezva A, Valero-Moya S, Alajarin M, Berna J. Light-responsive peptide [2]rotaxanes as gatekeepers of mechanised nanocontainers. Chem Commun (Camb) 2015; 51:14501-4. [DOI: 10.1039/c5cc04365d] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Novel mechanized silica nanoparticles incorporating a peptide-based molecular shuttle as a photo-responsive interlocked gatekeeper of nanocontainers are described including the uptake and delivery studies of a model cargo.
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Affiliation(s)
- A. Martinez-Cuezva
- Departamento de Química Orgánica
- Facultad de Química
- Regional Campus of International Excellence “Campus Mare Nostrum”
- Universidad de Murcia
- Murcia
| | - S. Valero-Moya
- Departamento de Química Orgánica
- Facultad de Química
- Regional Campus of International Excellence “Campus Mare Nostrum”
- Universidad de Murcia
- Murcia
| | - M. Alajarin
- Departamento de Química Orgánica
- Facultad de Química
- Regional Campus of International Excellence “Campus Mare Nostrum”
- Universidad de Murcia
- Murcia
| | - J. Berna
- Departamento de Química Orgánica
- Facultad de Química
- Regional Campus of International Excellence “Campus Mare Nostrum”
- Universidad de Murcia
- Murcia
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