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Alfonso I. Supramolecular chemical biology: designed receptors and dynamic chemical systems. Chem Commun (Camb) 2024. [PMID: 39129537 DOI: 10.1039/d4cc03163f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/13/2024]
Abstract
Supramolecular chemistry focuses on the study of species joined by non-covalent interactions, and therefore on dynamic and relatively ill-defined structures. Despite being a well-developed field, it has to face important challenges when dealing with the selective recognition of biomolecules in highly competitive biomimetic media. However, supramolecular interactions reside at the core of chemical biology systems, since many processes in nature are governed by weak, non-covalent, strongly dynamic contacts. Therefore, there is a natural connection between these two research fields, which are not frequently related or share interests. In this feature article, I will highlight our most recent results in the molecular recognition of biologically relevant species, following different conceptual approaches from the most conventional design of elaborated receptors to the less popular dynamic combinatorial chemistry methodology. Selected illustrative examples from other groups will be also included. The discussion has been focused mainly on systems with potential biomedical applications.
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Affiliation(s)
- Ignacio Alfonso
- Department of Biological Chemistry, Institute for Advanced Chemistry of Catalonia (IQAC), The Spanish National Research Council (CSIC), Jordi Girona 18-26, 08034, Barcelona, Spain.
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2
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Han J, Back HJ, Hossain MM, Jung OS, Lee YA. Self-assembly of Ni(II) with a chiral ligand pair vs. mixture of the chiral ligand pair: structural features and recognition ability of Ni 2L 4 cages. Dalton Trans 2024; 53:8934-8939. [PMID: 38738336 DOI: 10.1039/d4dt00762j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/14/2024]
Abstract
The self-assembly of NiCl2 with a chiral bidentate ligand pair, (1R,2S)-(+)- and (1S,2R)-(-)-1-(nicotinamido)-2,3-dihydro-1H-inden-2-yl nicotinate (r,s-L and s,r-L) in a mixture of ethanol and dioxane, gives rise to stable crystals consisting of [2Cl@Ni2Cl2(s,r-L)4(H2O)2]·4C4H8O2·EtOH and [2Cl@Ni2Cl2(r,s-L)4(H2O)2]·4C4H8O2·EtOH chiral cages, respectively, with two encapsulated chloride anions in the cavities. The most interesting feature is that the self-assembly of NiCl2 with the mixture of r,s-L and s,r-L (1 : 1-1 : 4) produces crystals of thermodynamically stable achiral cages, [2Cl·2H2O@Ni2Cl2(s,r-L)2(r,s-L)2(H2O)2]·7C4H8O2, in the molar ratio range. Furthermore, the [2Cl@Ni2Cl2(s,r-L)4(H2O)2]·4C4H8O2·EtOH and [2Cl@Ni2Cl2(r,s-L)4(H2O)2]·4C4H8O2·EtOH chiral crystals can recognize the pairs of L-,D-tryptophan and L-,D-cysteine via cyclic voltammetry (CV) signals, in contrast to the [2Cl·2H2O@Ni2Cl2(s,r-L)2(r,s-L)2(H2O)2]·7C4H8O2 achiral crystal.
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Affiliation(s)
- Jihun Han
- Department of Chemistry, Pusan National University, Busan 46241, Republic of Korea.
| | - Hyo Jeong Back
- Department of Chemistry, Pusan National University, Busan 46241, Republic of Korea.
| | - Mohammad M Hossain
- Department of Electrochemistry, Korea Institute of Materials Science, Changwon 51508, Republic of Korea
| | - Ok-Sang Jung
- Department of Chemistry, Pusan National University, Busan 46241, Republic of Korea.
| | - Young-A Lee
- Department of Chemistry, Jeonbuk National University, Jeonju 54896, Korea.
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3
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Bhandari P, Mukherjee PS. Post‐Synthesis Conversion of an Unstable Imine Cage to a Stable Cage with Amide Moieties Towards Selective Receptor for Fluoride. Chemistry 2022; 28:e202201901. [DOI: 10.1002/chem.202201901] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Indexed: 11/08/2022]
Affiliation(s)
- Pallab Bhandari
- Department of Inorganic and Physical Chemistry Indian Institute of Science Bangalore 560012 India
| | - Partha Sarathi Mukherjee
- Department of Inorganic and Physical Chemistry Indian Institute of Science Bangalore 560012 India
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4
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Doubly chiral pseudopeptidic macrobicyclic molecular cages: Water-assisted dynamic covalent self-assembly and chiral self-sorting. Chem 2022. [DOI: 10.1016/j.chempr.2022.04.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Abstract
Artificial receptors able to recognise biologically relevant molecules or ions have gained interest in the chemical community because they offer a plethora of posibilities. Molecular cage compounds are polycyclic compounds with a cavity designed for the encapsulation of guest species. Once inside the host cavity, the substrate can be transported through membranes and protected from the action of enzymes or other reactive species, thus offering the possibility of interfering with biological systems. Commonly, enzymes have been an inspiration for chemists in the search and design of defined cavities for different purposes. However, the chemical preparation of molecular cages has struggled with many synthetic challenges but this effort is worthwhile as they are a very promising tool for many applications ranging from sensing, delivery, purification or even promotion of/prevention from chemical modifications. Since the early reports at the end of the 60s, this field has experienced a growing interest; this review summarises the progress in the preparation and study of cage-like compounds highlighting their importance in biological applications.
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Affiliation(s)
- Lucía Tapia
- Department of Biological Chemistry, Institute for Advanced Chemistry of Catalonia, IQAC-CSIC, Jordi Girona 18-26, 08034 Barcelona, Spain.
| | - Ignacio Alfonso
- Department of Biological Chemistry, Institute for Advanced Chemistry of Catalonia, IQAC-CSIC, Jordi Girona 18-26, 08034 Barcelona, Spain.
| | - Jordi Solà
- Department of Biological Chemistry, Institute for Advanced Chemistry of Catalonia, IQAC-CSIC, Jordi Girona 18-26, 08034 Barcelona, Spain.
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Utilizing an Amino Acid Scaffold to Construct Heteroditopic Receptors Capable of Interacting with Salts under Interfacial Conditions. Int J Mol Sci 2021; 22:ijms221910754. [PMID: 34639095 PMCID: PMC8509731 DOI: 10.3390/ijms221910754] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2021] [Revised: 09/28/2021] [Accepted: 09/29/2021] [Indexed: 11/17/2022] Open
Abstract
A 4-nitro-L-phenylalanine scaffold was used to construct effective ion pair receptors capable of binding anions in an enhanced manner with the assistance of alkali metal cations. A benzocrown ether was linked to a receptor platform via the amide function so as to support the squaramide function in anion binding and to allow all three NHs to act simultaneously. The binding properties of the receptors were determined using UV-vis, 1H NMR, 2D NMR, and DOSY spectroscopy in MeCN and in the solid state by X-ray measurements. Ion pair receptor 2 was found to interact with the most strongly with salts, and the removal of its key structural elements was shown to hinder the receptor action. The amide proton was recognized to switch from having involvement in an intramolecular hydrogen bond to interacting with anions upon complexation. Apart from carboxylates, which promote deprotonation, and other monovalent salts creating 1:1 complexes with the receptor, more complex equilibria were established upon the complexation of 2 with sulfates. Receptor 2 was shown to be capable of the extraction of ion pairs from the aqueous to organic phase and of the cation-enhanced transport chloride and sulfate anions across a bulk chloroform membrane. These features may open the door for its use in regulating ion concertation under interfacial conditions and acting as a potential drug to treat channelopathies.
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7
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Tapia L, Pérez Y, Bolte M, Casas J, Solà J, Quesada R, Alfonso I. pH‐Dependent Chloride Transport by Pseudopeptidic Cages for the Selective Killing of Cancer Cells in Acidic Microenvironments. Angew Chem Int Ed Engl 2019; 58:12465-12468. [DOI: 10.1002/anie.201905965] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Revised: 07/09/2019] [Indexed: 12/19/2022]
Affiliation(s)
- Lucía Tapia
- Department of Biological ChemistryIQAC-CSIC Jordi Girona, 18–26 08034 Barcelona Spain
| | - Yolanda Pérez
- NMR FacilityIQAC-CSIC Jordi Girona, 18–26 08034 Barcelona Spain
| | - Michael Bolte
- Institut für Anorganische ChemieJ.-W.-Goethe-Universität Max-von-Laue-Str.7 60438 Frankfurt/Main Germany
| | - Josefina Casas
- Department of Biological ChemistryIQAC-CSIC Jordi Girona, 18–26 08034 Barcelona Spain
- CIBER Enfermedades Hepaticas y Digestivas (CIBEREHD) Spain
| | - Jordi Solà
- Department of Biological ChemistryIQAC-CSIC Jordi Girona, 18–26 08034 Barcelona Spain
| | - Roberto Quesada
- Departamento de QuímicaFacultad de CienciasUniversidad de Burgos 09001 Burgos Spain
| | - Ignacio Alfonso
- Department of Biological ChemistryIQAC-CSIC Jordi Girona, 18–26 08034 Barcelona Spain
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8
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Borges A, Gillespie D, Nag A. Biological applications of amide and amino acid containing synthetic macrocycles. Supramol Chem 2019. [DOI: 10.1080/10610278.2019.1650178] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Ariane Borges
- Department of Chemistry, Clark University, Worcester, MA, USA
| | - Dylan Gillespie
- Department of Chemistry, Clark University, Worcester, MA, USA
| | - Arundhati Nag
- Department of Chemistry, Clark University, Worcester, MA, USA
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9
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Tapia L, Pérez Y, Bolte M, Casas J, Solà J, Quesada R, Alfonso I. pH‐Dependent Chloride Transport by Pseudopeptidic Cages for the Selective Killing of Cancer Cells in Acidic Microenvironments. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201905965] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Lucía Tapia
- Department of Biological ChemistryIQAC-CSIC Jordi Girona, 18–26 08034 Barcelona Spain
| | - Yolanda Pérez
- NMR FacilityIQAC-CSIC Jordi Girona, 18–26 08034 Barcelona Spain
| | - Michael Bolte
- Institut für Anorganische ChemieJ.-W.-Goethe-Universität Max-von-Laue-Str.7 60438 Frankfurt/Main Germany
| | - Josefina Casas
- Department of Biological ChemistryIQAC-CSIC Jordi Girona, 18–26 08034 Barcelona Spain
- CIBER Enfermedades Hepaticas y Digestivas (CIBEREHD) Spain
| | - Jordi Solà
- Department of Biological ChemistryIQAC-CSIC Jordi Girona, 18–26 08034 Barcelona Spain
| | - Roberto Quesada
- Departamento de QuímicaFacultad de CienciasUniversidad de Burgos 09001 Burgos Spain
| | - Ignacio Alfonso
- Department of Biological ChemistryIQAC-CSIC Jordi Girona, 18–26 08034 Barcelona Spain
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10
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Korchowiec B, Gorczyca M, Korchowiec J, Rubio-Magnieto J, Lotfallah AH, Luis SV, Rogalska E. The effect of protonation in a family of peptide based gemini amphiphiles on the interaction in Langmuir films. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.03.177] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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11
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Valls A, Altava B, Burguete MI, Escorihuela J, Martí-Centelles V, Luis SV. Supramolecularly assisted synthesis of chiral tripodal imidazolium compounds. Org Chem Front 2019. [DOI: 10.1039/c9qo00163h] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Supramolecular interactions based on amide groups direct the preferential formation of tritopic instead of monotopic or ditopic imidazolium compounds.
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Affiliation(s)
- Adriana Valls
- Departamento de Química Inorgánica y Orgánica
- Universitat Jaume I
- Castellón
- Spain
| | - Belén Altava
- Departamento de Química Inorgánica y Orgánica
- Universitat Jaume I
- Castellón
- Spain
| | - M. Isabel Burguete
- Departamento de Química Inorgánica y Orgánica
- Universitat Jaume I
- Castellón
- Spain
| | - Jorge Escorihuela
- Departamento de Química Inorgánica y Orgánica
- Universitat Jaume I
- Castellón
- Spain
| | | | - Santiago V. Luis
- Departamento de Química Inorgánica y Orgánica
- Universitat Jaume I
- Castellón
- Spain
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12
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Akhtar N, Saha A, Kumar V, Pradhan N, Panda S, Morla S, Kumar S, Manna D. Diphenylethylenediamine-Based Potent Anionophores: Transmembrane Chloride Ion Transport and Apoptosis Inducing Activities. ACS APPLIED MATERIALS & INTERFACES 2018; 10:33803-33813. [PMID: 30221925 DOI: 10.1021/acsami.8b06664] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Synthetic anion transporters have been recognized as one of the potential therapeutic agents for the treatment of diseases including cystic fibrosis, myotonia, and epilepsy that originate due to the malfunctioning of natural Cl- ion transport systems. Recent studies showed that the synthetic Cl- ion transporters can also disrupt cellular ion-homeostasis and induce apoptosis in cancer cell lines, leading to a revived attention for synthetic Cl- ion transporters. Herein, we report the development of conformationally controlled 1,2-diphenylethylenediamine-based bis(thiourea) derivatives as a new class of selective Cl- ion carrier. The strong Cl- ion binding properties ( Kd = 3.87-6.66 mM) of the bis(thiourea) derivatives of diamine-based compounds correlate well with their transmembrane anion transport activities (EC50 = 2.09-4.15 nM). The transport of Cl- ions via Cl-/NO3- antiport mechanism was confirmed for the most active molecule. Perturbation of Cl- ion homeostasis by this anion carrier induces cell death by promoting the caspase-mediated intrinsic pathway of apoptosis.
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13
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Faggi E, Luis SV, Alfonso I. Sensing, Transport and Other Potential Biomedical Applications of Pseudopeptides. Curr Med Chem 2018; 26:4065-4097. [PMID: 29493442 DOI: 10.2174/0929867325666180301091040] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2017] [Revised: 01/17/2018] [Accepted: 01/20/2018] [Indexed: 11/22/2022]
Abstract
Pseudopeptides are privileged synthetic molecules built from the designed combination of peptide-like and abiotic artificial moieties. Consequently, they are benefited from the advantages of both families of chemical structures: modular synthesis, chemical and functional diversity, tailored three-dimensional structure, usually high stability in biological media and low non-specific toxicity. Accordingly, in the last years, these compounds have been used for different biomedical applications, ranging from bio-sensing, ion transport, the molecular recognition of biologically relevant species, drug delivery or gene transfection. This review highlights a selection of the most remarkable and recent advances in this field.
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Affiliation(s)
- Enrico Faggi
- Department of Biological Chemistry and Molecular Modelling, Institute of Advanced Chemistry of Catalonia, Consejo Superior de Investigaciones Cientificas, Barcelona, Spain
| | - Santiago V Luis
- Department of Inorganic and Organic Chemistry, Universitat Jaume I, Castellon, Spain
| | - Ignacio Alfonso
- Department of Biological Chemistry and Molecular Modelling, Institute of Advanced Chemistry of Catalonia, Consejo Superior de Investigaciones Cientificas, Barcelona, Spain
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14
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Kataev EA, Backmann N, Shumilova TA, Rüffer T, Lang H. Calix[4]pyrroles bearing quinolinium moiety for halide sensing in aqueous solution. Supramol Chem 2016. [DOI: 10.1080/10610278.2015.1073730] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Evgeny A. Kataev
- Institute of Chemistry, Faculty of Natural Sciences, Technische Universität Chemnitz, 09107 Chemnitz, Germany
| | - Nanett Backmann
- Institute of Chemistry, Faculty of Natural Sciences, Technische Universität Chemnitz, 09107 Chemnitz, Germany
| | - Tatiana A. Shumilova
- Institute of Chemistry, Faculty of Natural Sciences, Technische Universität Chemnitz, 09107 Chemnitz, Germany
| | - Tobias Rüffer
- Institute of Chemistry, Faculty of Natural Sciences, Technische Universität Chemnitz, 09107 Chemnitz, Germany
| | - Heinrich Lang
- Institute of Chemistry, Faculty of Natural Sciences, Technische Universität Chemnitz, 09107 Chemnitz, Germany
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15
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Alfonso I. From simplicity to complex systems with bioinspired pseudopeptides. Chem Commun (Camb) 2016; 52:239-50. [DOI: 10.1039/c5cc07596c] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
This feature article highlights some of the recent advances in creating complexity from simple pseudopeptidic molecules. The bioinspired approaches discussed here allowed an increase in the structural, chemical and interactional complexity (see figure).
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Affiliation(s)
- Ignacio Alfonso
- Department of Biological Chemistry and Molecular Modelling
- Institute of Advanced Chemistry of Catalonia
- IQAC-CSIC
- Jordi Girona
- 18-26
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16
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Zdanowski S, Piątek P, Romański J. An ion pair receptor facilitating the extraction of chloride salt from the aqueous to the organic phase. NEW J CHEM 2016. [DOI: 10.1039/c6nj01482h] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A squaramide supported molecular receptor with the ability to extract chloride salt from the aqueous to the organic phase was synthesized and characterized.
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Affiliation(s)
| | - Piotr Piątek
- Department of Chemistry
- University of Warsaw
- 02-093 Warsaw
- Poland
| | - Jan Romański
- Department of Chemistry
- University of Warsaw
- 02-093 Warsaw
- Poland
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17
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Soto-Cerrato V, Manuel-Manresa P, Hernando E, Calabuig-Fariñas S, Martínez-Romero A, Fernández-Dueñas V, Sahlholm K, Knöpfel T, García-Valverde M, Rodilla AM, Jantus-Lewintre E, Farràs R, Ciruela F, Pérez-Tomás R, Quesada R. Facilitated Anion Transport Induces Hyperpolarization of the Cell Membrane That Triggers Differentiation and Cell Death in Cancer Stem Cells. J Am Chem Soc 2015; 137:15892-8. [DOI: 10.1021/jacs.5b09970] [Citation(s) in RCA: 98] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Vanessa Soto-Cerrato
- Cancer
Cell Biology Research Group, Department of Pathology and Experimental
Therapeutics, Faculty of Medicine, University of Barcelona, 08007 Barcelona, Spain
| | - Pilar Manuel-Manresa
- Cancer
Cell Biology Research Group, Department of Pathology and Experimental
Therapeutics, Faculty of Medicine, University of Barcelona, 08007 Barcelona, Spain
| | - Elsa Hernando
- Departmento
de Química, Universidad de Burgos, 09001 Burgos, Spain
| | - Silvia Calabuig-Fariñas
- Fundación de Investigación Hospital General Universitario de Valencia, 46014 Valencia, Spain
- Department
of Pathology, Universitat de València, 46010 Valencia, Spain
| | | | - Víctor Fernández-Dueñas
- Unitat
de Farmacologia, Departament Patologia i Terapèutica Experimental,
Facultat de Medicina, IDIBELL, Universitat de Barcelona, L’Hospitalet de Llobregat, 08007 Barcelona, Spain
| | - Kristoffer Sahlholm
- Unitat
de Farmacologia, Departament Patologia i Terapèutica Experimental,
Facultat de Medicina, IDIBELL, Universitat de Barcelona, L’Hospitalet de Llobregat, 08007 Barcelona, Spain
- Department
of Neuroscience, Karolinska Institute, 171 77 Solna, Stockholm, Sweden
| | - Thomas Knöpfel
- Division
of Brain Sciences, Imperial College London, London SW7 2AZ, United Kingdom
| | | | - Ananda M. Rodilla
- Cancer
Cell Biology Research Group, Department of Pathology and Experimental
Therapeutics, Faculty of Medicine, University of Barcelona, 08007 Barcelona, Spain
| | - Eloisa Jantus-Lewintre
- Fundación de Investigación Hospital General Universitario de Valencia, 46014 Valencia, Spain
- Department
of Biotechnology, Universitat Politècnica de València, 46022 Valencia,Spain
| | - Rosa Farràs
- Centro de Investigación Príncipe Felipe, 46012 Valencia, Spain
| | - Francisco Ciruela
- Unitat
de Farmacologia, Departament Patologia i Terapèutica Experimental,
Facultat de Medicina, IDIBELL, Universitat de Barcelona, L’Hospitalet de Llobregat, 08007 Barcelona, Spain
- Department
of Biochemistry and Microbiology, Faculty of Sciences, University of Ghent, 9000 Gent, Belgium
| | - Ricardo Pérez-Tomás
- Cancer
Cell Biology Research Group, Department of Pathology and Experimental
Therapeutics, Faculty of Medicine, University of Barcelona, 08007 Barcelona, Spain
| | - Roberto Quesada
- Departmento
de Química, Universidad de Burgos, 09001 Burgos, Spain
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Faggi E, Vicent C, Luis SV, Alfonso I. Stereoselective recognition of the Ac-Glu-Tyr-OH dipeptide by pseudopeptidic cages. Org Biomol Chem 2015; 13:11721-31. [PMID: 26481115 DOI: 10.1039/c5ob01889g] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Pseudopeptidic molecular cages are appealing receptors since they can display different polar and non-polar interaction sites in a modular framework and a controlled disposition. Inspired by previous host-guest knowledge, two pseudopeptidic molecular cages based on serine and threonine (CySer and CyThr, respectively) were designed and synthesized as hosts for the binding of the four possible stereoisomers of the Ac-Glu-Tyr-OH dipeptide, a target sequence of tyrosine kinases. The careful NMR titration experiments in aqueous acetonitrile allowed the determination of the binding constants and reflected a difference in the stability of the corresponding diastereomeric host-guest complexes. The CySer cage proved to be slightly more efficient than the CyThr counterpart, although both showed similar stereoselectivity trends: LL > DD ≥ LD > DL. This stereoselective binding was retained in the gas phase, as shown by ESI-MS competition experiments using the enantiomer-labelled method (EL), as well as CID experiments. Thus, the MS-determined discriminations follow the same trends observed by NMR, suggesting that the stereoselectivity observed for these systems must be mainly dictated by the polar host-guest interactions. Despite the stereoselective binding of short peptide sequences in competitive media being a challenging issue in supramolecular chemistry, our results demonstrate the power of pseudopeptidic cages in molecular recognition with foreseen implications in chemical biology.
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Affiliation(s)
- Enrico Faggi
- Department of Biological Chemistry and Molecular Modeling, IQAC-CSIC, Jordi Girona, 18-26, E-08034, Barcelona, Spain.
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19
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Lang C, Zhang X, Luo Q, Dong Z, Xu J, Liu J. Powerful Bipodal Anion Transporters Based on Scaffolds That Contain Different Chalcogens. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500997] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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20
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Martí-Centelles V, Pandey MD, Burguete MI, Luis SV. Macrocyclization Reactions: The Importance of Conformational, Configurational, and Template-Induced Preorganization. Chem Rev 2015; 115:8736-834. [DOI: 10.1021/acs.chemrev.5b00056] [Citation(s) in RCA: 278] [Impact Index Per Article: 30.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
| | - Mrituanjay D. Pandey
- Departament de Química
Inorgànica i Orgànica, Universitat Jaume I, 12071 Castelló, Spain
| | - M. Isabel Burguete
- Departament de Química
Inorgànica i Orgànica, Universitat Jaume I, 12071 Castelló, Spain
| | - Santiago V. Luis
- Departament de Química
Inorgànica i Orgànica, Universitat Jaume I, 12071 Castelló, Spain
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21
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Martí I, Burguete MI, Gale PA, Luis SV. Acyclic Pseudopeptidic Hosts as Molecular Receptors and Transporters for Anions. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500390] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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Sans V, Porwol L, Dragone V, Cronin L. A self optimizing synthetic organic reactor system using real-time in-line NMR spectroscopy. Chem Sci 2015; 6:1258-1264. [PMID: 29560211 PMCID: PMC5811122 DOI: 10.1039/c4sc03075c] [Citation(s) in RCA: 164] [Impact Index Per Article: 18.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2014] [Accepted: 11/14/2014] [Indexed: 12/21/2022] Open
Abstract
A configurable platform for synthetic chemistry incorporating an in-line benchtop NMR that is capable of monitoring and controlling organic reactions in real-time is presented. The platform is controlled via a modular LabView software control system for the hardware, NMR, data analysis and feedback optimization. Using this platform we report the real-time advanced structural characterization of reaction mixtures, including 19F, 13C, DEPT, 2D NMR spectroscopy (COSY, HSQC and 19F-COSY) for the first time. Finally, the potential of this technique is demonstrated through the optimization of a catalytic organic reaction in real-time, showing its applicability to self-optimizing systems using criteria such as stereoselectivity, multi-nuclear measurements or 2D correlations.
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Affiliation(s)
- Victor Sans
- WestCHEM , School of Chemistry , The University of Glasgow , Glasgow G12 8QQ , UK . ; http://www.croninlab.com
| | - Luzian Porwol
- WestCHEM , School of Chemistry , The University of Glasgow , Glasgow G12 8QQ , UK . ; http://www.croninlab.com
| | - Vincenza Dragone
- WestCHEM , School of Chemistry , The University of Glasgow , Glasgow G12 8QQ , UK . ; http://www.croninlab.com
| | - Leroy Cronin
- WestCHEM , School of Chemistry , The University of Glasgow , Glasgow G12 8QQ , UK . ; http://www.croninlab.com
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23
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Abstract
Cyclic peptides provide excellent scaffolds for anion recognition and improved binding affinity and selectivity has been achieved through peptide backbone rigidification and the introduction of side chains bearing anion recognition groups.
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24
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Martí I, Bolte M, Burguete MI, Vicent C, Alfonso I, Luis SV. Tight and Selective Caging of Chloride Ions by a Pseudopeptidic Host. Chemistry 2014; 20:7458-64. [DOI: 10.1002/chem.201303604] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2013] [Revised: 03/24/2014] [Indexed: 11/12/2022]
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25
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Faggi E, Moure A, Bolte M, Vicent C, Luis SV, Alfonso I. Pseudopeptidic Cages as Receptors for N-Protected Dipeptides. J Org Chem 2014; 79:4590-601. [DOI: 10.1021/jo500629d] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Enrico Faggi
- Departamento
de Química Biológica y Modelización Molecular, Instituto de Química Avanzada de Cataluña (IQAC-CSIC), Jordi Girona
18-26, E-08034 Barcelona, Spain
| | - Alejandra Moure
- Departamento
de Química Biológica y Modelización Molecular, Instituto de Química Avanzada de Cataluña (IQAC-CSIC), Jordi Girona
18-26, E-08034 Barcelona, Spain
| | - Michael Bolte
- Institut
für Anorganische Chemie, J.-W.-Goethe-Universität, Max-von-Laue-Strasse 7, D-60438 Frankfurt/Main, Germany
| | | | | | - Ignacio Alfonso
- Departamento
de Química Biológica y Modelización Molecular, Instituto de Química Avanzada de Cataluña (IQAC-CSIC), Jordi Girona
18-26, E-08034 Barcelona, Spain
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26
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Abstract
For years researchers have tried to understand the molecular behavior of complex biomolecules through the development of small molecules that can partially mimic their function. Now researchers are implementing the reverse approach: using the structural and mechanistic knowledge obtained from those complex systems to design small molecules with defined properties and for specific applications. One successful strategy for constructing bioinspired, minimalistic molecules is to combine natural building blocks that provide functional elements with abiotic fragments that serve as structural scaffolds. Therefore pseudopeptidic compounds, most of them based on C2 symmetric structures, represent a unique opportunity to explore and evaluate this approach. Some of these molecules are as simple as two amino acids connected by a diamino spacer. The results in this Account show how bioinspired minimalistic pseudopeptides can form ordered structures, participate in the recognition and transcription of information events in molecular devices, and catalyze reactions. This strategy allows researchers to design and prepare a variety of open-chain and macrocyclic compounds leading to systems that can self-aggregate to form hierarchically ordered micro- and nanostructures. In addition, small changes in the molecule or external stimuli can regulate the self-aggregation pattern. In the same way, researchers can also tune the molecular movements of simple pseudopeptides through environmental factors, providing a means to control new molecular devices. In addition, some of the prepared model compounds have shown interesting properties in molecular recognition and even as sensors for several targets of interest. Finally we have observed remarkable catalytic activities from these types of molecules, although those results are still far from the efficiency shown by natural peptides. This family of pseudopeptidic compounds offers the opportunity for the more elaborate design of relatively simple abiotic but bioinspired systems that display specific properties. In addition, the results can provide additional information that will increase the molecular understanding of the basic principles that underlie the extraordinary behavior of natural systems.
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Affiliation(s)
- Santiago V. Luis
- Department of Inorganic and Organic Chemistry, ESTCE, University Jaume I, Castellón. Spain
| | - I. Alfonso
- Department of Biological Chemistry and Molecular Modeling, IQAC−CSIC, Barcelona, Spain
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27
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Busschaert N, Karagiannidis LE, Wenzel M, Haynes CJE, Wells NJ, Young PG, Makuc D, Plavec J, Jolliffe KA, Gale PA. Synthetic transporters for sulfate: a new method for the direct detection of lipid bilayer sulfate transport. Chem Sci 2014. [DOI: 10.1039/c3sc52006d] [Citation(s) in RCA: 89] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
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28
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Lowe AJ, Long BM, Pfeffer FM. Conformationally preorganised hosts for anions using norbornane and fused [n]polynorbornane frameworks. Chem Commun (Camb) 2013; 49:3376-88. [DOI: 10.1039/c3cc40702k] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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29
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Faggi E, Luis SV, Alfonso I. Minimalistic amino amides as models to study N–H⋯π interactions and their implication in the side chain folding of pseudopeptidic molecules. RSC Adv 2013. [DOI: 10.1039/c3ra41843j] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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