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Ali A, Bidhuri P, Malik NA, Uzair S. Density, viscosity, and refractive index of mono-, di-, and tri-saccharides in aqueous glycine solutions at different temperatures. ARAB J CHEM 2019. [DOI: 10.1016/j.arabjc.2014.08.027] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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2
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Li YY, Wang FR, Li ZY, Yan ZN, Niu YY. Assembly and Adsorption Properties of Seven Supramolecular Compounds with Heteromacrocycle Imidazolium. ACS OMEGA 2019; 4:8926-8934. [PMID: 31459980 PMCID: PMC6648617 DOI: 10.1021/acsomega.9b00669] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2019] [Accepted: 05/13/2019] [Indexed: 05/20/2023]
Abstract
Seven supramolecular compounds comprising multivalent imidazolium macrocycles and metal halides, {[MC-IM][Ag2I4]} n (1), {[PC-IM]2[Ag7I11]} n (2), {[ODC-IM][Ag3I7]} (3), {[ODC-IM][Bi2I10]} (4), {[MDC-IM][Bi2I10]} (5), {[PDC-IM][Bi2I10]} (6), and {[MDC-IM][HgI4]} (7), have been synthesized by solvothermal reactions and structurally characterized by IR spectroscopy, thermogravimetric analysis, and single-crystal X-ray diffraction. Notably, the three tetravalent imidazolium macrocycles were introduced for the first time and the extended anion structures are featured with three-dimensional coordination networks, one-dimensional chains, or zero-dimensional oligomers. This new study attempts to not only fill the gap in this supramolecular hybrid area that has been neglected but also enrich the type of imidazolium cyclophane. It is important that good efforts were devoted to study the adsorption properties of supramolecular compounds. Compound 5 exhibited great adsorption performance for organic dyes methylene blue, methyl orange, and rhodamine B (RhB) and can be evaluated as a potential candidate for industrial wastewater treatment.
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Vitiello G, Musumeci D, Koutsioubas A, Paduano L, Montesarchio D, D'Errico G. Ionophores at work: Exploring the interaction of guanosine-based amphiphiles with phospholipid membranes. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2017; 1859:2392-2401. [DOI: 10.1016/j.bbamem.2017.09.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2017] [Revised: 08/31/2017] [Accepted: 09/05/2017] [Indexed: 01/21/2023]
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Rodríguez-Vázquez N, Fuertes A, Amorín M, Granja JR. Bioinspired Artificial Sodium and Potassium Ion Channels. Met Ions Life Sci 2016; 16:485-556. [DOI: 10.1007/978-3-319-21756-7_14] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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5
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Benincasa M, Francescon M, Fregonese M, Gennaro R, Pengo P, Rossi P, Scrimin P, Tecilla P. Helical peptide-polyamine and -polyether conjugates as synthetic ionophores. Bioorg Med Chem 2015; 23:7386-93. [PMID: 26558517 DOI: 10.1016/j.bmc.2015.10.034] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2015] [Revised: 10/21/2015] [Accepted: 10/23/2015] [Indexed: 10/22/2022]
Abstract
Two new synthetic ionophores in which the hydrophobic portion is represented by a short helical Aib-peptide (Aib=α-amino-isobutyric acid) and the hydrophilic one is a poly-amino (1a) or a polyether (1b) chain have been prepared. The two conjugates show a high ionophoric activity in phospholipid membranes being able to efficiently dissipate a pH gradient and, in the case of 1b, to transport Na(+) across the membrane. Bioactivity evaluation of the two conjugates shows that 1a has a moderate antimicrobial activity against a broad spectrum of microorganisms and it is able to permeabilize the inner and the outer membrane of Escherichia coli cells.
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Affiliation(s)
- Monica Benincasa
- University of Trieste, Department of Life Sciences, via Giorgieri 5, I-34127 Trieste, Italy
| | - Marco Francescon
- University of Trieste, Department of Chemical and Pharmaceutical Sciences, via Giorgieri 1, I-34127 Trieste, Italy
| | - Massimo Fregonese
- University of Trieste, Department of Chemical and Pharmaceutical Sciences, via Giorgieri 1, I-34127 Trieste, Italy
| | - Renato Gennaro
- University of Trieste, Department of Life Sciences, via Giorgieri 5, I-34127 Trieste, Italy.
| | - Paolo Pengo
- University of Trieste, Department of Chemical and Pharmaceutical Sciences, via Giorgieri 1, I-34127 Trieste, Italy
| | - Paola Rossi
- University of Trieste, Department of Chemical and Pharmaceutical Sciences, via Giorgieri 1, I-34127 Trieste, Italy
| | - Paolo Scrimin
- University of Padova, Department of Chemical Sciences, via Marzolo 1, I-35131 Padova, Italy.
| | - Paolo Tecilla
- University of Trieste, Department of Chemical and Pharmaceutical Sciences, via Giorgieri 1, I-34127 Trieste, Italy.
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Busschaert N, Caltagirone C, Van Rossom W, Gale PA. Applications of Supramolecular Anion Recognition. Chem Rev 2015; 115:8038-155. [PMID: 25996028 DOI: 10.1021/acs.chemrev.5b00099] [Citation(s) in RCA: 858] [Impact Index Per Article: 95.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
| | - Claudia Caltagirone
- ‡Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, S.S. 554 Bivio per Sestu, 09042 Monserrato, Cagliari, Italy
| | - Wim Van Rossom
- †Chemistry, University of Southampton, Southampton SO17 1BJ, United Kingdom
| | - Philip A Gale
- †Chemistry, University of Southampton, Southampton SO17 1BJ, United Kingdom
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Li Z, Deng LQ, Chen JX, Zhou CQ, Chen WH. Does lipophilicity affect the effectiveness of a transmembrane anion transporter? Insight from squaramido-functionalized bis(choloyl) conjugates. Org Biomol Chem 2015; 13:11761-9. [DOI: 10.1039/c5ob01920f] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Lipophilicity was found to have little effect on the effectiveness of squaramido-functionalized bis(choloyl) conjugates.
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Affiliation(s)
- Zhi Li
- School of Pharmaceutical Sciences
- Southern Medical University
- Guangzhou 510515
- P. R. China
| | - Li-Qun Deng
- School of Pharmaceutical Sciences
- Southern Medical University
- Guangzhou 510515
- P. R. China
| | - Jin-Xiang Chen
- School of Pharmaceutical Sciences
- Southern Medical University
- Guangzhou 510515
- P. R. China
| | - Chun-Qiong Zhou
- School of Pharmaceutical Sciences
- Southern Medical University
- Guangzhou 510515
- P. R. China
| | - Wen-Hua Chen
- School of Pharmaceutical Sciences
- Southern Medical University
- Guangzhou 510515
- P. R. China
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Milano D, Benedetti B, Boccalon M, Brugnara A, Iengo E, Tecilla P. Anion transport across phospholipid membranes mediated by a diphosphine–Pd(ii) complex. Chem Commun (Camb) 2014; 50:9157-60. [DOI: 10.1039/c4cc02881c] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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9
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Iengo E, Cavigli P, Milano D, Tecilla P. Metal mediated self-assembled porphyrin metallacycles: Synthesis and multipurpose applications. Inorganica Chim Acta 2014. [DOI: 10.1016/j.ica.2014.02.018] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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10
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Abstract
Seventeen derivatives of α- and β-cyclodextrins were prepared from the cyclodextrin per-6-azide by "click" cyclization with terminal alkynes. Sixteen of these "half-channel" compounds showed significant activity as ion channels in planar bilayer members as assessed by the voltage-clamp technique. Activity ranged from persistent square-top openings to highly erratic conductance; mixed behaviours were evident in virtually all data recorded. Some of the erratic behaviours were shown to follow an apparent power-law distribution of open duration times. The activities observed for the suite were summarized using a model-free activity grid method which displays conductance, duration, and opening behaviour. The overall activity shows the clustering of conductance-duration indicating that activity arises from system properties rather that solely as a property of the compound. The activity grids also support an analysis of structure-activity relationships as they apply to the global behaviour of the compounds and reveal the complexity of a single structure change in controlling the distribution of concurrent conductance behaviours. Transient blockage of channel activity by the hydrophobic guest of the cyclodextrin (1-adamantyl carboxylate) is consistent with the formation of an end-to-end dimer channel among several other competing and interconverting structures.
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Affiliation(s)
- Jonathan K W Chui
- Department of Chemistry, University of Victoria, PO Box 3065, Victoria, BC, Canada V8W 3P6.
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Saha T, Roy A, Gening ML, Titov DV, Gerbst AG, Tsvetkov YE, Nifantiev NE, Talukdar P. Cyclo-oligo-(1 → 6)-β-d-glucosamine based artificial channels for tunable transmembrane ion transport. Chem Commun (Camb) 2014; 50:5514-6. [DOI: 10.1039/c3cc49490j] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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De Riccardis F, Izzo I, Montesarchio D, Tecilla P. Ion transport through lipid bilayers by synthetic ionophores: modulation of activity and selectivity. Acc Chem Res 2013; 46:2781-90. [PMID: 23534613 DOI: 10.1021/ar4000136] [Citation(s) in RCA: 76] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The ion-coupled processes that occur in the plasma membrane regulate the cell machineries in all the living organisms. The details of the chemical events that allow ion transport in biological systems remain elusive. However, investigations of the structure and function of natural and artificial transporters has led to increasing insights about the conductance mechanisms. Since the publication of the first successful artificial system by Tabushi and co-workers in 1982, synthetic chemists have designed and constructed a variety of chemically diverse and effective low molecular weight ionophores. Despite their relative structural simplicity, ionophores must satisfy several requirements. They must partition in the membrane, interact specifically with ions, shield them from the hydrocarbon core of the phospholipid bilayer, and transport ions from one side of the membrane to the other. All these attributes require amphipathic molecules in which the polar donor set used for ion recognition (usually oxygens for cations and hydrogen bond donors for anions) is arranged on a lipophilic organic scaffold. Playing with these two structural motifs, donor atoms and scaffolds, researchers have constructed a variety of different ionophores, and we describe a subset of interesting examples in this Account. Despite the ample structural diversity, structure/activity relationships studies reveal common features. Even when they include different hydrophilic moieties (oxyethylene chains, free hydroxyl, etc.) and scaffolds (steroid derivatives, neutral or polar macrocycles, etc.), amphipathic molecules, that cannot span the entire phospholipid bilayer, generate defects in the contact zone between the ionophore and the lipids and increase the permeability in the bulk membrane. Therefore, topologically complex structures that span the entire membrane are needed to elicit channel-like and ion selective behaviors. In particular the alternate-calix[4]arene macrocycle proved to be a versatile platform to obtain 3D-structures that can form unimolecular channels in membranes. In these systems, the selection of proper donor groups allows us to control the ion selectivity of the process. We can switch from cation to anion transport by substituting protonated amines for the oxygen donors. Large and stable tubular structures with nanometric sized transmembrane nanopores that provide ample internal space represent a different approach for the preparation of synthetic ion channels. We used the metal-mediated self-assembly of porphyrin ligands with Re(I) corners as a new method for producing to robust channel-like structures. Such structures can survive in the complex membrane environment and show interesting ionophoric behavior. In addition to the development of new design principles, the selective modification of the biological membrane permeability could lead to important developments in medicine and technology.
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Affiliation(s)
- Francesco De Riccardis
- Department of Chemistry and Biology, University of Salerno, via Ponte don Melillo, I-84084 Fisciano (SA), Italy
| | - Irene Izzo
- Department of Chemistry and Biology, University of Salerno, via Ponte don Melillo, I-84084 Fisciano (SA), Italy
| | - Daniela Montesarchio
- Department of Chemical Sciences, University Federico II of Napoli, Via Cintia, 4, I-80126 Napoli, Italy
| | - Paolo Tecilla
- Department of Chemical and Pharmaceutical Sciences, University of Trieste, via Giorgieri 1, I-34127, Trieste, Italy
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On the mechanism of ion transport through lipid membranes mediated by PEGylated cyclic oligosaccharides (CyPLOS): An ESR study. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2013; 1828:2074-82. [DOI: 10.1016/j.bbamem.2013.05.017] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2012] [Revised: 04/19/2013] [Accepted: 05/15/2013] [Indexed: 12/25/2022]
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Synthesis and ionophoric activities of functionalized bis(choloyl) conjugates with a rigid core. Bioorg Med Chem Lett 2013; 23:3145-8. [DOI: 10.1016/j.bmcl.2013.04.022] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2013] [Revised: 04/07/2013] [Accepted: 04/09/2013] [Indexed: 11/21/2022]
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Alfonso I, Quesada R. Biological activity of synthetic ionophores: ion transporters as prospective drugs? Chem Sci 2013. [DOI: 10.1039/c3sc50882j] [Citation(s) in RCA: 78] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
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Boccalon M, Iengo E, Tecilla P. New meso-substituted trans-A2B2 di(4-pyridyl)porphyrins as building blocks for metal-mediated self-assembling of 4 + 4 Re(i)–porphyrin metallacycles. Org Biomol Chem 2013; 11:4056-67. [DOI: 10.1039/c3ob40452h] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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