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Velo-Gala I, Barceló-Oliver M, Gil DM, González-Pérez JM, Castiñeiras A, Domínguez-Martín A. Deciphering the H-Bonding Preference on Nucleoside Molecular Recognition through Model Copper(II) Compounds. Pharmaceuticals (Basel) 2021; 14:ph14030244. [PMID: 33803177 PMCID: PMC7998196 DOI: 10.3390/ph14030244] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Revised: 03/02/2021] [Accepted: 03/04/2021] [Indexed: 12/31/2022] Open
Abstract
The synthetic nucleoside acyclovir is considered an outstanding model of the natural nucleoside guanosine. With the purpose of deepening on the influence and nature of non-covalent interactions regarding molecular recognition patterns, three novel Cu(II) complexes, involving acyclovir (acv) and the ligand receptor N-(2-hydroxyethyl)ethylenediamine (hen), have been synthesized and thoroughly characterized. The three novel compounds introduce none, one or two acyclovir molecules, respectively. Molecular recognition has been evaluated using single crystal X-ray diffraction. Furthermore, theoretical calculations and other physical methods such as thermogravimetric analysis, infrared and UV-Vis spectroscopy, electron paramagnetic resonance and magnetic measurements have been used. Theoretical calculations are in line with experimental results, supporting the relevance of the [metal-N7(acv) + H-bond] molecular recognition pattern. It was also shown that (hen)O-H group is used as preferred H-donor when it is found within the basal coordination plane, since the higher polarity of the terminal (hen)O-H versus the N-H group favours its implication. Otherwise, when (hen)O-H occupies the distal coordination site, (hen)N-H groups can take over.
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Affiliation(s)
- Inmaculada Velo-Gala
- Faculdade de Engenharia da Universidade do Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal;
| | - Miquel Barceló-Oliver
- Department of Chemistry, Universitat de les Illes Balears, Crta de Valldemossa km 7.5, 07122 Palma de Mallorca, Spain;
| | - Diego M. Gil
- Instituto de Biotecnología Farmaceútica y Alimentaria, Consejo Nacional de Investigaciones Científicas y Técnicas—Universidad Nacional de Tucumán, Instituto de Química Orgánica, Facultad de Bioquímica, Química y Farmacia, Universidad Nacional de Tucumán, Ayacucho 471, San Miguel de Tucumán T4000INI, Argentina;
| | - Josefa M. González-Pérez
- Department of Inorganic Chemistry, Faculty of Pharmacy, University of Granada, 18071 Granada, Spain;
| | - Alfonso Castiñeiras
- Department of Inorganic Chemistry, Faculty of Pharmacy, University of Santiago de Compostela, 15782 Santiago de Compostela, Spain;
| | - Alicia Domínguez-Martín
- Department of Inorganic Chemistry, Faculty of Pharmacy, University of Granada, 18071 Granada, Spain;
- Correspondence:
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Maldonado N, Amo-Ochoa P. The role of coordination compounds in virus research. Different approaches and trends. Dalton Trans 2021; 50:2310-2323. [PMID: 33496298 DOI: 10.1039/d0dt04066e] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
This article aims to provide an overview of the studies focused on using coordination compounds as antiviral agents against different types of viruses. We present various strategies so far used to this end. This article is divided into two sections. The first collects the series of designed antiviral drugs based on coordination compounds. This approach has been developed for many years, starting from the 70s with the discovery of cis-platin (cis-DDP). It has been mainly focused on studying the synergistic effect of a wide variety of new compounds obtained by combining metal ions with organic antiviral ligands. Then, we collect various strategies analyzing the coordination compounds interacting with viruses using different processes such as wrapping viruses, rapid detection of RNA or DNA virus, or nanocarriers. These recent and novel insights help to study viruses from other points of view, allowing to measure their physical and chemical properties. We also highlight a section in which the issue of viruses from a disinfection viewpoint is addressed, using coordination compounds as a tool able to control the release of antiviral and biocide agents. This is an emerging and promising field but this approach is actually little developed. We finally provide a section with a general conclusion and perspectives.
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Affiliation(s)
- Noelia Maldonado
- Department of Inorganic Chemistry, Autonomous University of Madrid, E-28049 Madrid, Spain.
| | - Pilar Amo-Ochoa
- Department of Inorganic Chemistry, Autonomous University of Madrid, E-28049 Madrid, Spain. and Institute for Advanced Research in Chemistry (IADCHEM). Universidad Autónoma de Madrid, 28049 Madrid, Spain
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Ruiz-González N, García-Rubiño ME, Domínguez-Martín A, Choquesillo-Lazarte D, Franconetti A, Frontera A, Castiñeiras A, González-Pérez JM, Niclós-Gutiérrez J. Molecular and supramolecular recognition patterns in ternary copper(II) or zinc(II) complexes with selected rigid-planar chelators and a synthetic adenine-nucleoside. J Inorg Biochem 2019; 203:110920. [PMID: 31760232 DOI: 10.1016/j.jinorgbio.2019.110920] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2019] [Revised: 11/06/2019] [Accepted: 11/11/2019] [Indexed: 11/25/2022]
Abstract
Four ternary metal-complexes with Cu(II) or Zn(II), 2,6-pyridine-dicarboxylate (pdc) or glycyl-glycinate (GG) and the synthetic nucleoside 9-(2-hydroxyethyl)adenine (9heade) have been synthesized and studied by single-crystal X-ray diffraction and other physical methods. Relevant supramolecular assemblies found in the solid state structures have been further studied using density functional theory (DFT) calculations. In addition, the energetic features of the non-covalent interactions as well as the cooperativity effects have been calculated and characterized using the non-covalent interaction plot computational tool. Compounds trans-[Cu(pdc)(9heade)(H2O)2]·3H2O (1a) and [Cu(pdc)(9heade)(H2O)]·H2O (1b), trans-[Zn(pdc)(9heade)(H2O)2] (2), share the same molecular recognition pattern consisting in the cooperation of the metal-N7(9heade) bond and an interligand (9heade)N6-H···O(pdc) interaction, regardless of the nature of the metal, the coordination environment and the water content. At a supramolecular level, these compounds exhibit pairs of complex molecules linked by H-bonds and interesting anion-π/π-π/π-anion assemblies (in 1a and 1b) or the unprecedented π-π interactions (in 2), involving the purine moieties or the exocyclic -6NH2 purine groups, respectively. Compound 3, {[Cu(GG)(9heade)(H2O)·Cu(GG)(μ2-9heade)]·8H2O}n, consists in asymmetric dinuclear complex units (Cu···Cu 7.83 Å) that connect with adjacent ones by pairs of very weak Cu-O(carboxylate) bonds (Cu···Cu 3.81 Å) building a polymeric chain. The supramolecular transition from a single molecule to dinuclear units and finally a polymeric chain is also observed in the electron paramagnetic resonance spectra and discussed from a structural point of view as well as by DFT calculations. The unprecedented N7 and μ-N7,O(ol) metal binding patterns of 9heade differs from that recently reported (μ-N1,N7) in a Cd(II) polymer.
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Affiliation(s)
- Noelia Ruiz-González
- Department of Inorganic Chemistry, Faculty of Pharmacy, University of Granada, E-18071 Granada, Spain
| | - M Eugenia García-Rubiño
- Department of Physical Chemistry, Faculty of Pharmacy, University of Granada, E-18071 Granada, Spain
| | - Alicia Domínguez-Martín
- Department of Inorganic Chemistry, Faculty of Pharmacy, University of Granada, E-18071 Granada, Spain
| | - Duane Choquesillo-Lazarte
- Laboratorio de Estudios Cristalográficos, IACT (CSIC-UGR), Avda. de las Palmeras 4, 18100 Armilla, Granada, Spain
| | - Antonio Franconetti
- Department of Chemistry, Faculty of Chemical Science, University of Balearic Island, E-07112 Palma, Mallorca, Spain
| | - Antonio Frontera
- Department of Chemistry, Faculty of Chemical Science, University of Balearic Island, E-07112 Palma, Mallorca, Spain
| | - Alfonso Castiñeiras
- Department of Inorganic Chemistry, Faculty of Pharmacy, University of Santiago de Compostela, E-15782 Santiago de Compostela, Spain
| | - Josefa M González-Pérez
- Department of Inorganic Chemistry, Faculty of Pharmacy, University of Granada, E-18071 Granada, Spain
| | - Juan Niclós-Gutiérrez
- Department of Inorganic Chemistry, Faculty of Pharmacy, University of Granada, E-18071 Granada, Spain.
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Pérez-Toro I, Domínguez-Martín A, Choquesillo-Lazarte D, García-Rubiño ME, González-Pérez JM, Castiñeiras A, Bauzá A, Frontera A, Niclós-Gutiérrez J. Copper(II) polyamine chelates as efficient receptors for acyclovir: syntheses, crystal structures and dft study. Polyhedron 2018. [DOI: 10.1016/j.poly.2018.02.011] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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5
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Kostelidou A, Kalogiannis S, Begou OA, Perdih F, Turel I, Psomas G. Synthesis, structure and biological activity of copper(II) complexes with gatifloxacin. Polyhedron 2016. [DOI: 10.1016/j.poly.2016.09.012] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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6
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Structural and Theoretical Evidence of the Depleted Proton Affinity of the N3-Atom in Acyclovir. CRYSTALS 2016. [DOI: 10.3390/cryst6110139] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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7
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González-Pérez JM, Choquesillo-Lazarte D, Domínguez-Martín A, Vílchez-Rodríguez E, Pérez-Toro I, Castiñeiras A, Arriortua OK, García-Rubiño ME, Matilla-Hernández A, Niclós-Gutiérrez J. Metal binding pattern of acyclovir in ternary copper(II) complexes having an S-thioether or S-disulfide NO2S-tripodal tetradentate chelator. Inorganica Chim Acta 2016. [DOI: 10.1016/j.ica.2016.05.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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8
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Perontsis S, Hatzidimitriou AG, Begou OA, Papadopoulos AN, Psomas G. Characterization and biological properties of copper(II)-ketoprofen complexes. J Inorg Biochem 2016; 162:22-30. [DOI: 10.1016/j.jinorgbio.2016.06.001] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2015] [Revised: 05/16/2016] [Accepted: 06/03/2016] [Indexed: 12/11/2022]
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Markova N, Pejov L, Stoyanova N, Enchev V. Hybrid MC/QC simulations of water-assisted proton transfer in nucleosides. Guanosine and its analog acyclovir. J Biomol Struct Dyn 2016; 35:1168-1188. [PMID: 27092850 DOI: 10.1080/07391102.2016.1179594] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
To provide an in-depth insight into the molecular basis of spontaneous tautomerism in DNA and RNA base pairs, a hybrid Monte Carlo (MC)-quantum chemical (QC) methodology is implemented to map two-dimensional potential energy surfaces along the reaction coordinates of solvent-assisted proton transfer processes in guanosine and its analog acyclovir in aqueous solution. The solvent effects were simulated by explicit inclusion of water molecules that model the relevant part of the first hydration shell around the solute. The position of these water molecules was estimated by carrying out a classical Metropolis Monte Carlo simulation of dilute water solutions of the guanosine (Gs) and acyclovir (ACV) and subsequently analyzing solute-solvent intermolecular interactions in the statistically-independent MC-generated configurations. The solvent-assisted proton transfer processes were further investigated using two different ab initio MP2 quantum chemical approaches. In the first one, potential energy surfaces of the 'bare' finite solute-solvent clusters containing Gs/ACV and four water molecules (MP2/6-31+G(d,p) level) were explored, while within the second approach, these clusters were embedded in 'bulk' solvent treated as polarizable continuum (C-PCM/MP2/6-31+G(d,p) level of theory). It was found that in the gas phase and in water solution, the most stable tautomer for guanosine and acyclovir is the 1H-2-amino-6-oxo form followed by the 2-amino-6-(sZ)-hydroxy form. The energy barriers of the water-assisted proton transfer reaction in guanosine and in acyclovir are found to be very similar - 11.74 kcal mol-1 for guanosine and 11.16 kcal mol-1 for acyclovir, and the respective rate constants (k = 1.5 × 101 s-1, guanosine and k = 4.09 × 101 s-1, acyclovir), are sufficiently large to generate the 2-amino-6-(sZ)-hydroxy tautomer. The analysis of the reaction profiles in both compounds shows that the proton transfer processes occur through the asynchronous concerted mechanism.
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Affiliation(s)
- Nadezhda Markova
- a Institute of Organic Chemistry , Bulgarian Academy of Sciences , 1113 Sofia , Bulgaria
| | - Ljupco Pejov
- b Faculty of Natural Sciences and Mathematics , Institute of Chemistry , Skopje , Macedonia.,c Research Centre for Environment and Materials , Macedonian Academy of Sciences and Arts , Krste Misirkov 2, 1000 Skopje , Macedonia
| | - Nina Stoyanova
- a Institute of Organic Chemistry , Bulgarian Academy of Sciences , 1113 Sofia , Bulgaria
| | - Venelin Enchev
- a Institute of Organic Chemistry , Bulgarian Academy of Sciences , 1113 Sofia , Bulgaria
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Blindauer CA, Sigel A, Operschall BP, Griesser R, Holý A, Sigel H. Extent of intramolecular π stacks in aqueous solution in mixed-ligand copper(II) complexes formed by heteroaromatic amines and the anticancer and antivirally active 9-[2-(phosphonomethoxy)ethyl]guanine (PMEG). A comparison with related acyclic nucleotide analogues. Polyhedron 2016. [DOI: 10.1016/j.poly.2015.02.022] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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11
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Serrano-Braceras M, Choquesillo-Lazarte D, Domínguez-Martín A, Vílchez-Rodríguez E, García-Rubiño ME, González-Pérez JM, Castiñeiras A, Niclós-Gutiérrez J. Metal complexes with N-(trifluoromethylbenzyl)iminodiacetate chelators (x-3F ligands). Part I. Copper(II) chelates of p-3F, m-3F, and o-3F with or without imidazole-like ligands. J COORD CHEM 2015. [DOI: 10.1080/00958972.2015.1062092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Marina Serrano-Braceras
- Department of Inorganic Chemistry, Faculty of Pharmacy, University of Granada, Granada, Spain
| | | | - Alicia Domínguez-Martín
- Department of Inorganic Chemistry, Faculty of Pharmacy, University of Granada, Granada, Spain
| | - Ester Vílchez-Rodríguez
- Department of Inorganic Chemistry, Faculty of Pharmacy, University of Granada, Granada, Spain
| | - María Eugenia García-Rubiño
- Department of Pharmaceutical and Organic Chemistry, Faculty of Pharmacy, University of Granada, Granada, Spain
| | | | - Alfonso Castiñeiras
- Faculty of Pharmacy, Department of Inorganic Chemistry, University of Santiago de Compostela, Santiago de Compostela, Spain
| | - Juan Niclós-Gutiérrez
- Department of Inorganic Chemistry, Faculty of Pharmacy, University of Granada, Granada, Spain
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González-Pérez JM, Choquesillo-Lazarte D, Domínguez-Martín A, El Bakkali H, García-Rubiño ME, Pérez-Toro I, Vílchez-Rodríguez E, Castiñeiras A, Nurchi VM, Niclós-Gutiérrez J. Molecular recognition between adenine or 2,6-diaminopurine and copper(II) chelates with N,O2,S-tripodal tetradentate chelators having thioether or disulfide donor groups. J Inorg Biochem 2015; 151:75-86. [PMID: 26190672 DOI: 10.1016/j.jinorgbio.2015.05.014] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2015] [Revised: 05/26/2015] [Accepted: 05/29/2015] [Indexed: 11/18/2022]
Abstract
Five novel ternary copper(II) complexes with the N,O2,S-tripodal tetradentate chelators N,N-bis(carboxymethyl)-S-benzylcysteaminate(2-) ion (BCBC) or N,N,N',N'-tetrakis(carboxymethyl)cystaminate(4-) ion (TCC) and adenine (Hade), 2,6-diaminopurine (Hdap), 2,2'-bipyridine (bpy) or 1,10-phenanthroline (phen) as co-ligand were synthesized and characterized by X-ray diffraction and other physical methods: [Cu2(BCBC)2(μ2-N3,N7-H(N9)ade)(H2O)2]·H2O (1), [Cu2(BCBC)2(μ2-N7,N9-H(N3)dap)(H2O)2]·4H2O (2), [Cu2(μ2-TCC)(H(N9)ade)2(H2O)2]·10H2O (3), [Cu2(μ2-TCC)(bpy)2]·15H2O (4) and [Cu2(μ2-TCC)(phen)2]·14H2O (5). The crystal structure of H4TCC·3H2O was also determined. All ternary Cu(II) complexes have molecular structures. The N-(2-mercaptoethyl)-iminodiacetate moieties of BCBC or TCC ligands play a NO2+S-tripodal tetradentate role, with the S-(thioether or disulfide) atom as the apical/distal donor of the copper(II) center. In 1-3, the iminodiacetate moiety exhibits a mer-NO2 conformation (two nearly coplanar chelate rings) while in 4 and 5 (with bpy or phen as coligand) it displays a fac-NO+O (apical/distal) conformation. We conclude that the formation of the Cu-S(thioether or disulfide) bonds is strongly favored by the N-branched topology of the S-ligands in the reported compounds.
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Affiliation(s)
| | - Duane Choquesillo-Lazarte
- Laboratorio de Estudios Cristalográficos, IACT, CSIC-University of Granada, Avenida de las Palmeras 4, Armilla 18100 Granada, Spain
| | - Alicia Domínguez-Martín
- Department of Inorganic Chemistry, Faculty of Pharmacy, University of Granada, 18071 Granada, Spain.
| | - Hanan El Bakkali
- Department of Inorganic Chemistry, Faculty of Pharmacy, University of Granada, 18071 Granada, Spain
| | - María Eugenia García-Rubiño
- Department of Organic and Pharmaceutical Chemistry, Faculty of Pharmacy, University of Granada, 18071 Granada, Spain
| | - Inmaculada Pérez-Toro
- Department of Inorganic Chemistry, Faculty of Pharmacy, University of Granada, 18071 Granada, Spain
| | - Ester Vílchez-Rodríguez
- Department of Inorganic Chemistry, Faculty of Pharmacy, University of Granada, 18071 Granada, Spain
| | - Alfonso Castiñeiras
- Department of Inorganic Chemistry, Faculty of Pharmacy, University of Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Valeria Marina Nurchi
- Dipartimento di Scienze Chimiche e Geologiche, Università di Cagliari, Cittadela Universitaria, 09042 Monserrato, CA, Italy
| | - Juan Niclós-Gutiérrez
- Department of Inorganic Chemistry, Faculty of Pharmacy, University of Granada, 18071 Granada, Spain
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13
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Pérez-Toro I, Domínguez-Martín A, Choquesillo-Lazarte D, Vílchez-Rodríguez E, González-Pérez JM, Castiñeiras A, Niclós-Gutiérrez J. Lights and shadows in the challenge of binding acyclovir, a synthetic purine-like nucleoside with antiviral activity, at an apical-distal coordination site in copper(II)-polyamine chelates. J Inorg Biochem 2015; 148:84-92. [PMID: 25863571 DOI: 10.1016/j.jinorgbio.2015.03.006] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2014] [Revised: 03/08/2015] [Accepted: 03/09/2015] [Indexed: 11/25/2022]
Abstract
Several nucleic acid components and their metal complexes are known to be involved in crucial metabolic steps. Therefore the study of metal-nucleic acid interactions becomes essential to understand these biological processes. In this work, the synthetic purine-like nucleoside acyclovir (acv) has been used as a model of guanosine recognition with copper(II)-polyamine chelates. The chemical stability of the N9-acyclic arm in acv offers the possibility to use this antiviral drug to deepen the knowledge of metal-nucleoside interactions. Cu(II) chelates with cyclam, cyclen and trien were used as suitable receptors. All these copper(II) tetraamine chelates have in common the potential ability to yield a Cu-N7(apical) bond assisted by an appropriate (amine)N-H⋯O6(acv) intra-molecular interligand interaction. A series of synthesis afforded the following compounds: [Cu(cyclam)(ClO4)2] (1), {[Cu(cyclam)(μ2-NO3)](NO3)}n (2), {[Cu(cyclam)(μ2-SO4)]·MeOH}n (3), {[Cu(cyclam)(μ2-SO4)]·5H2O}n (4), [Cu(cyclen)(H2O)]SO4·2H2O (5), [Cu(cyclen)(H2O)]SO4·3H2O (6), [Cu(trien)(acv)](NO3)2·acv (7) and [Cu(trien)(acv)]SO4·0.71H2O (8). All these compounds have been characterized by X-ray crystallography and FT-IR spectroscopy. Our results reveal that the macrochelates Cu(cyclen)(2+) and Cu(cyclam)(2+) are unable to bind acv at an apical site. In contrast, the Cu(trien)(2+) complex has proved to be an efficient receptor for acv in compounds (7) and (8). In the ternary complex [Cu(trien)(acv)](2+), the metal binding pattern of acv consists of an apical Cu-N7 bond assisted by an intra-molecular (primary amino)N-H⋯O6(acv) interligand interaction. Structural comparisons reveal that this unprecedented apical role of acv is due to the acyclic nature of trien together with the ability of the Cu(trien)(2+) chelate to generate five-coordinated (type 4+1) copper(II) complexes.
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Affiliation(s)
- Inmaculada Pérez-Toro
- Department of Inorganic Chemistry, Faculty of Pharmacy, University of Granada, 18071 Granada, Spain
| | - Alicia Domínguez-Martín
- Department of Inorganic Chemistry, Faculty of Pharmacy, University of Granada, 18071 Granada, Spain.
| | - Duane Choquesillo-Lazarte
- Laboratorio de Estudios Cristalográficos, IACT, CSIC-Universidad de Granada, Av. de las Palmeras 4, E-18100 Armilla, Granada, Spain
| | - Esther Vílchez-Rodríguez
- Department of Inorganic Chemistry, Faculty of Pharmacy, University of Granada, 18071 Granada, Spain
| | | | - Alfonso Castiñeiras
- Department of Inorganic Chemistry, Faculty of Pharmacy, University of Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Juan Niclós-Gutiérrez
- Department of Inorganic Chemistry, Faculty of Pharmacy, University of Granada, 18071 Granada, Spain
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14
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Alvarez-Ros MC, Palafox MA. Conformational analysis, molecular structure and solid state simulation of the antiviral drug acyclovir (zovirax) using density functional theory methods. Pharmaceuticals (Basel) 2014; 7:695-722. [PMID: 24915059 PMCID: PMC4078516 DOI: 10.3390/ph7060695] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2014] [Revised: 05/22/2014] [Accepted: 05/26/2014] [Indexed: 11/23/2022] Open
Abstract
The five tautomers of the drug acyclovir (ACV) were determined and optimised at the MP2 and B3LYP quantum chemical levels of theory. The stability of the tautomers was correlated with different parameters. On the most stable tautomer N1 was carried out a comprehensive conformational analysis, and the whole conformational parameters (R, β, Φ, φ1, φ2, φ3, φ4, φ5) were studied as well as the NBO Natural atomic charges. The calculations were carried out with full relaxation of all geometrical parameters. The search located at least 78 stable structures within 8.5 kcal/mol electronic energy range of the global minimum, and classified in two groups according to the positive or negative value of the torsional angle j1. In the nitrogen atoms and in the O2' and O5' oxygen atoms of the most stable conformer appear a higher reactivity than in the natural nucleoside deoxyguanosine. The solid state was simulated through a dimer and tetramer forms and the structural parameters were compared with the X-ray crystal data available. Several general conclusions were emphasized.
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Affiliation(s)
- Margarita Clara Alvarez-Ros
- Departamento de Química-Física I. Facultad de Ciencias Químicas, Universidad Complutense, Ciudad Universitaria, Madrid 28040, Spain.
| | - Mauricio Alcolea Palafox
- Departamento de Química-Física I. Facultad de Ciencias Químicas, Universidad Complutense, Ciudad Universitaria, Madrid 28040, Spain.
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15
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Molecular recognition modes between adenine or adeniniun(1+) ion and binary MII(pdc) chelates (MCoZn; pdc=pyridine-2,6-dicarboxylate(2-) ion). J Inorg Biochem 2013; 127:211-9. [DOI: 10.1016/j.jinorgbio.2013.06.008] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2012] [Revised: 06/15/2013] [Accepted: 06/15/2013] [Indexed: 11/19/2022]
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16
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Stereospecific intra-molecular interligand interactions affecting base-specific metal bonding to purine nucleobases in the solid state. Coord Chem Rev 2013. [DOI: 10.1016/j.ccr.2013.02.008] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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17
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Tabassum S, Al-Asbahy WM, Afzal M, Arjmand F, Bagchi V. Molecular drug design, synthesis and structure elucidation of a new specific target peptide based metallo drug for cancer chemotherapy as topoisomerase I inhibitor. Dalton Trans 2012; 41:4955-4964. [PMID: 22407358 DOI: 10.1039/c2dt12044e] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/12/2023]
Abstract
To evaluate the biological preference of metallopeptide drugs in cancer cells, a new dinuclear copper(II) complex [Cu(2)(glygly)(2)(ppz)(H(2)O)(4)]·2H(2)O (1) (glygly = glycyl glycine anion and ppz = piperazine), was designed and synthesized as topoisomerase I inhibitor. The structural elucidation of the complex was done by elemental analysis, spectroscopic methods and single crystal X-ray diffraction. The in vitro DNA binding studies of complex 1 with CT DNA were carried out by employing different optical methods viz. UV-vis, fluorescence and circular dichroism. The molecular docking technique was also utilized to ascertain the mechanism and mode of action towards the molecular target DNA and enzymes. Complex 1 cleaves pBR322 DNA via an oxidative mechanism and strongly binds to the DNA minor groove. Furthermore, complex 1 exhibits significant inhibitory effects on the catalytic activity of topoisomerase I at a very low concentration, ~12.5 μM, in addition to its excellent SOD mimics (IC(50)~0.086 μM).
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Affiliation(s)
- Sartaj Tabassum
- Department of Chemistry, Aligarh Muslim University, Aligarh 202201, UP, India.
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Domínguez-Martín A, Choquesillo-Lazarte D, González-Pérez JM, Castiñeiras A, Niclós-Gutiérrez J. Molecular recognition patterns of 2-aminopurine versus adenine: a view through ternary copper(II) complexes. J Inorg Biochem 2011; 105:1073-80. [PMID: 21726770 DOI: 10.1016/j.jinorgbio.2011.05.009] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2011] [Revised: 05/11/2011] [Accepted: 05/18/2011] [Indexed: 11/19/2022]
Abstract
In contrast to the comprehensive structural information about metal complexes with adenine, the corresponding to its isomer 2-aminopurine (H2AP) is extremely poor. With the aim to rationalize the metal binding pattern of H2AP, we report the molecular and/or crystal structure of four novel compounds with various iminodiacetate-like (IDA-like) copper(II) chelates: [Cu(IDA)(H2AP)(H2O)]·H2O (1), [Cu(MIDA)(H2AP)(H2O)]·3H2O (2), {[Cu(NBzIDA)(H2AP)]·1.5H2O}n (3) and [Cu(MEBIDA)(H2AP)(H2O)]·3.5 H2O (4), where IDA, MIDA, NBzIDA and MEBIDA are R=H, CH3, benzyl- and p-tolyl- in R-N-(CH2-COO-)2 ligands, respectively. Synthesis strategies include direct reactions of copper(II) chelates with H2AP (alone, for 1 and 3) and/or with the base pairs H2AP:thymine (1-4) or H2AP:cytosine (3). Moreover, these compounds have been also investigated by spectral and thermal methods. Regardless of the N-derivative of the IDA chelator, molecular recognition between H2AP and the referred Cu(II)-chelates only displays the formation of the Cu-N7(purine-like) bond what is clearly in contrast to what was previously reported for adenine. The metal binding pattern of 2-aminopurine is discussed on the basis of the electronic effects and steric hindrance of the 2-amino exocyclic group.
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Affiliation(s)
- Alicia Domínguez-Martín
- Department of Inorganic Chemistry, Faculty of Pharmacy, Campus Cartuja, University of Granada, E-18071 Granada, Spain.
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