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Guchhait T, Pradhan P, Panda L, Sreejit K. Rao M. Pyrrole‐Based Cryptand‐Like Cages: A Critical Overview of Synthetic Strategies and Applications. ChemistrySelect 2022. [DOI: 10.1002/slct.202202671] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Tapas Guchhait
- Department of Chemistry C. V. Raman Global University, Bhubaneswar Odisha 752054 India
| | - Pujarani Pradhan
- Department of Chemistry C. V. Raman Global University, Bhubaneswar Odisha 752054 India
| | - Lipsita Panda
- Department of Chemistry C. V. Raman Global University, Bhubaneswar Odisha 752054 India
| | - M. Sreejit K. Rao
- Department of Chemistry C. V. Raman Global University, Bhubaneswar Odisha 752054 India
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2
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Bhattacherjee P, Roy M, Naskar A, Tsai H, Ghosh A, Patra N, John RP. A trinuclear copper (II) complex of naproxen‐appended salicylhydrazide: Synthesis, crystal structure, DNA binding and molecular docking study. Appl Organomet Chem 2022. [DOI: 10.1002/aoc.6459] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Prama Bhattacherjee
- Department of Chemistry Indian Institute of Technology (Indian School of Mines) Dhanbad India
| | - Mousam Roy
- Department of Biochemistry Bose Institute Kolkata India
| | - Avigyan Naskar
- Department of Chemistry Indian Institute of Technology (Indian School of Mines) Dhanbad India
| | - Hsieh‐Chih Tsai
- Graduate Institute of Applied Science and Technology National Taiwan University of Science and Technology Taipei Taiwan
- Advanced Membrane Materials Center National Taiwan University of Science and Technology Taipei Taiwan
| | | | - Niladri Patra
- Department of Chemistry Indian Institute of Technology (Indian School of Mines) Dhanbad India
| | - Rohith P. John
- Department of Chemistry Indian Institute of Technology (Indian School of Mines) Dhanbad India
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3
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Akine S, Miyashita M, Nabeshima T. Enhancement of Alkali Metal Ion Recognition by Metalation of a Tris(saloph) Cryptand Having Benzene Rings at the Bridgeheads. Inorg Chem 2021; 60:12961-12971. [PMID: 34310880 DOI: 10.1021/acs.inorgchem.1c01376] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A cryptand derivative, H6L, which has three H2saloph arms connected by two benzene ring bridgeheads, was synthesized and converted into the trinuclear metallocryptand, LNi3. The nonmetalated host, H6L, was found to bind to alkali metal ions (Na+, K+, Rb+, Cs+; logKa = 3.37-6.67) in its well-defined cavity in DMSO/chloroform (1:9). The binding affinity was enhanced by 1-2 orders of magnitude upon the conversion into the metallocryptand, LNi3, which can be explained by the more polarized phenoxo groups in the [Ni(saloph)] arms. The guest binding affinity of Na+ < K+ < Rb+ ≈ Cs+ was clearly demonstrated by the 1H NMR competition experiments. The DFT calculations suggested that the Rb+ ion most suitably fit into the benzene-benzene spacing with a cation-π interaction and that only the largest Cs+ ion can almost equally interact with all six phenoxo oxygen donor atoms. The metallocryptand, LNi3, also showed a strong binding affinity to Ag+ by taking advantage of cation-π interactions, which was confirmed by spectroscopic titrations and crystallographic analysis as well as DFT calculations. Thus, the well-defined three-dimensional cavity of LNi3 was found to be suitable for strong binding with alkali metal ions as well as Ag+.
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Affiliation(s)
- Shigehisa Akine
- Graduate School of Natural Science and Technology/Nano Life Science Institute (WPI-NanoLSI), Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
| | - Masato Miyashita
- Faculty of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8571, Japan
| | - Tatsuya Nabeshima
- Faculty of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8571, Japan
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4
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Horáčková T, Budka J, Eigner V, Chung WS, Cuřínová P, Lhoták P. Chiral anion recognition using calix[4]arene-based ureido receptors in a 1,3-alternate conformation. Beilstein J Org Chem 2020; 16:2999-3007. [PMID: 33363668 PMCID: PMC7736684 DOI: 10.3762/bjoc.16.249] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Accepted: 11/24/2020] [Indexed: 11/23/2022] Open
Abstract
The introduction of chiral alkyl substituents into the lower rim of calix[4]arene immobilised in the 1,3-alternate conformation led to a system possessing a preorganised ureido cavity hemmed with chiral alkyl units in the near proximity. As shown by the 1H NMR titration experiments, these compounds can be used as receptors for chiral anions in DMSO-d 6. The chiral recognition ability can be further strengthened by the introduction of another chiral moiety directly onto the urea N atoms. The systems with double chiral units being located around the binding ureido cavity showed better stereodiscrimination, with the highest selectivity factor being 3.33 (K L/K D) achieved for N-acetyl-ʟ-phenylalaninate. The structures of some receptors were confirmed by single crystal X-ray analysis.
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Affiliation(s)
- Tereza Horáčková
- Department of Organic Chemistry, University of Chemistry and Technology, Prague (UCTP), Technicka 5, 166 28 Prague 6, Czech Republic
| | - Jan Budka
- Department of Organic Chemistry, University of Chemistry and Technology, Prague (UCTP), Technicka 5, 166 28 Prague 6, Czech Republic
| | - Vaclav Eigner
- Department of Solid State Chemistry, UCTP, 166 28 Prague 6, Czech Republic
| | - Wen-Sheng Chung
- Department of Applied Chemistry, National Chiao Tung University, Hsinchu, 30050, Taiwan
| | - Petra Cuřínová
- Institute of Chemical Process Fundamentals of Czech Academy of Sciences v.v.i., Rozvojová 135, 165 02 Prague 6, Czech Republic
| | - Pavel Lhoták
- Department of Organic Chemistry, University of Chemistry and Technology, Prague (UCTP), Technicka 5, 166 28 Prague 6, Czech Republic
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5
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Cruz A, Núñez-Montenegro A, Mateus P, Delgado R. Monitoring inorganic pyrophosphatase activity with the fluorescent dizinc(ii) complex of a macrocycle bearing one dansylamidoethyl antenna. Dalton Trans 2020; 49:9487-9494. [PMID: 32608414 DOI: 10.1039/d0dt01673j] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
The dizinc(ii) complexes of L were used for the recognition of anions by fluorescence spectroscopy (L is a heteroditopic hexaazamacrocycle with two diethylenetriamine coordination heads with 2-methylpyridyl and dansylamido ethyl arms, and m-xylyl spacers). The protonation of L and stability constants of its zinc(ii) complexes were determined in aqueous solution, at 298.2 ± 0.1 K and I = 0.10 ± 0.01 M in KNO3. At a 2 : 1 Zn2+/L ratio, the dinuclear complexes clearly dominate. The ligand alone does not display fluorescence changes upon increasing the pH value, but in the presence of Zn2+ the emission reaches a maximum at pH ≅ 7.5, at which 95% of the ligand is in the dinuclear complex form. The emission appears concomitantly with the [Zn2H-1L]3+ species formation, which supports that the latter complex corresponds to the metal-promoted deprotonation of dansylamide NH. The [Zn2H-1L]3+ complexes were used for the recognition of phosphate and polyphosphate anions in aqueous solution buffered at pH 7.5 with 2 mM PIPPS, at 298.2 K. The binding of anions causes a decrease of the emission. The association constant determination revealed that HPPi3- is the strongest bound anion (log Kapp = 5.57), followed by HATP3- (two times weaker), and the remaining anions show lower binding constants, with HPO42- having the weakest uptake by the receptor. The observed selectivity of the [Zn2H-1L]3+ receptor for PPi in relation to HPO42-, and the fact that the formation of the [Zn2H-1L]3+ complex is not disturbed by the presence of Mg2+, allowed monitoring of the PPi hydrolysis by using inorganic pyrophosphatase in real-time.
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Affiliation(s)
- Ana Cruz
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Av. da República, 2780-157 Oeiras, Portugal.
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6
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Mateus P, Delgado R. Zinc(ii) and copper(ii) complexes as tools to monitor/inhibit protein phosphorylation events. Dalton Trans 2020; 49:17076-17092. [DOI: 10.1039/d0dt03503c] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
A perspective on the advance of copper(ii) and zinc(ii) complexes of varied ligand architectures as binders of phosphorylated peptides/proteins and as sensors of phosphorylation reactions is presented.
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Affiliation(s)
- Pedro Mateus
- Laboratorio Associado para a Química Verde (LAQV)
- Rede de Química e Tecnologia (REQUIMTE)
- Departamento de Química
- Faculdade de Ciências e Tecnologia
- Universidade Nova de Lisboa
| | - Rita Delgado
- Instituto de Tecnologia Química e Biológica António Xavier
- Universidade Nova de Lisboa (ITQB NOVA)
- 2780-157 Oeiras
- Portugal
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7
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Wen X, Wang Q, Fan Z. An active fluorescent probe based on aggregation-induced emission for intracellular bioimaging of Zn 2+ and tracking of interactions with single-stranded DNA. Anal Chim Acta 2018; 1013:79-86. [DOI: 10.1016/j.aca.2018.01.056] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2017] [Revised: 12/29/2017] [Accepted: 01/30/2018] [Indexed: 12/20/2022]
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8
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Esteves CV, Esteban-Gómez D, Platas-Iglesias C, Tripier R, Delgado R. Steric Effects on the Binding of Phosphate and Polyphosphate Anions by Zinc(II) and Copper(II) Dinuclear Complexes of m-Xylyl-bis-cyclen. Inorg Chem 2018; 57:6466-6478. [DOI: 10.1021/acs.inorgchem.8b00539] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Catarina V. Esteves
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Av. da República, 2780−157 Oeiras, Portugal
| | - David Esteban-Gómez
- Departamento de Química, Facultade de Ciencias & Centro de Investigaciones Científicas Avanzadas, Universidade da Coruña, 15071 A Coruña, Spain
| | - Carlos Platas-Iglesias
- Departamento de Química, Facultade de Ciencias & Centro de Investigaciones Científicas Avanzadas, Universidade da Coruña, 15071 A Coruña, Spain
| | - Raphaël Tripier
- UFR des Sciences et Techniques, Université de Bretagne Occidentale, UMR-CNRS 6521, IBSAM, 6 avenue Victor le Gorgeu, C.S. 93837 29238 Brest Cedex 3, France
| | - Rita Delgado
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Av. da República, 2780−157 Oeiras, Portugal
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9
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Mesquita LM, Mateus P, Fernandes RDV, Iranzo O, André V, Tiago de Oliveira F, Platas-Iglesias C, Delgado R. Recognition of phosphopeptides by a dinuclear copper(ii) macrocyclic complex in a water : methanol 50 : 50 v/v solution. Dalton Trans 2018; 46:9549-9564. [PMID: 28702582 DOI: 10.1039/c7dt01724c] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new triethylbenzene-derived tetraazamacrocycle containing pyridyl spacers, L, was prepared and its dinuclear copper(ii) complex was used as a receptor for the recognition of phosphorylated peptides in aqueous solution. A detailed study of the acid-base behaviour of L and its copper(ii) complexation properties as well as of the cascade species with phosphorylated anions including two peptidic substrates was carried out in a H2O/MeOH (50 : 50 v/v) solution using different techniques, such as potentiometry, X-band EPR and DFT calculations. The association constants of the dinuclear receptor with the phosphorylated peptides and other anionic species revealed a clear preference towards phenylic phosphorylated substrates, with values ranging 3.96-5.35 log units. Single-crystal X-ray diffraction determination of the dicopper(ii) complex of L showed the copper centres at a distance of 5.812(1) Å from one another, with the phosphate group of the PhPO42- substrate well accommodated between them. X-band EPR studies indicated a similar structure for this cascade complex and for the other cascade complexes with the phosphorylated anions studied. DFT studies of the [Cu2L(μ-OH)]3+ complex revealed a different conformation of the ligand that brings the two copper centres at a very short distance of 3.94 Å aided by the presence of a bridging hydroxide anion that provides a CuOCu angle of 167.3°. This complex is EPR silent, in line with the singlet ground state obtained using CASSCF(2,2) calculations and DFT calculations with the broken-symmetry approach. This species coexists in solution with a complex in a different conformation, and having a CuCu distance of 6.63 Å, in lower percentage.
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Affiliation(s)
- Lígia M Mesquita
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Av. da República, 2780-157 Oeiras, Portugal.
| | - Pedro Mateus
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Av. da República, 2780-157 Oeiras, Portugal.
| | - Rui D V Fernandes
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Av. da República, 2780-157 Oeiras, Portugal.
| | - Olga Iranzo
- Aix Marseille Univ., CNRS, Centrale Marseille, iSm2, Marseille, France
| | - Vânia André
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
| | - Filipe Tiago de Oliveira
- Laboratório de Instrumentação, Engenharia Biomédica e Física da Radiação (LIBPhys-UNL), Departamento de Física, Faculdade de Ciências e Tecnologia da Universidade Nova de Lisboa, Monte de Caparica, 2829-516 Caparica, Portugal
| | - Carlos Platas-Iglesias
- Centro de Investigaciones Científicas Avanzadas (CICA) and Departamento de Química, Facultade de Ciencias, Universidade da Coruña, Campus da Zapateira-Rúa da Fraga 10, 15008 A Coruña, Spain
| | - Rita Delgado
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Av. da República, 2780-157 Oeiras, Portugal.
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10
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Highly selective and sensitive macrocycle-based dinuclear foldamer for fluorometric and colorimetric sensing of citrate in water. Sci Rep 2018; 8:286. [PMID: 29321505 PMCID: PMC5762659 DOI: 10.1038/s41598-017-18322-w] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2017] [Accepted: 12/08/2017] [Indexed: 11/17/2022] Open
Abstract
The selective detection of citrate anions is essential for various biological functions in living systems. A quantitative assessment of citrate is required for the diagnosis of various diseases in the human body; however, it is extremely challenging to develop efficient fluorescence and color-detecting molecular probes for sensing citrate in water. Herein, we report a macrocycle-based dinuclear foldamer (1) assembled with eosin Y (EY) that has been studied for anion binding by fluorescence and colorimetric techniques in water at neutral pH. Results from the fluorescence titrations reveal that the 1·EY ensemble strongly binds citrate anions, showing remarkable selectivity over a wide range of inorganic and carboxylate anions. The addition of citrate anions to the 1·EY adduct led to a large fluorescence enhancement, displaying a detectable color change under both visible and UV light in water up to 2 μmol. The biocompatibility of 1·EY as an intracellular carrier in a biological system was evaluated on primary human foreskin fibroblast (HF) cells, showing an excellent cell viability. The strong binding properties of the ensemble allow it to be used as a highly sensitive, detective probe for biologically relevant citrate anions in various applications.
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11
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Venkatesan V, Kumar SKA, Bothra S, Sahoo SK. Highly selective iodide sensing ability of an anthraquinone-derived Schiff base in semi-aqueous medium and its performance in antioxidation, anti-inflammation and HRBC membrane protection. NEW J CHEM 2018. [DOI: 10.1039/c7nj03824k] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this study, a new iodide (I−) ion selective chromogenic receptor (3) was developed by reacting 9,10-anthraquinone with 2,4-dinitrophenylhydrazine.
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Affiliation(s)
- Vetriarasu Venkatesan
- Department of Chemistry, School of Advanced Sciences, VIT University
- Vellore-632014
- India
| | - S. K. Ashok Kumar
- Department of Chemistry, School of Advanced Sciences, VIT University
- Vellore-632014
- India
| | - Shilpa Bothra
- Department of Applied Chemistry, S. V. National Institute Technology
- Surat-395007
- India
| | - Suban K. Sahoo
- Department of Applied Chemistry, S. V. National Institute Technology
- Surat-395007
- India
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12
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Chakraborty S, Saha S, Lima LMP, Warzok U, Sarkar S, Akhuli B, Nandi M, Bej S, Adarsh NN, Schalley CA, Delgado R, Ghosh P. Polyamide-Polyamine Cryptand as Dicarboxylate Receptor: Dianion Binding Studies in the Solid State, in Solution, and in the Gas Phase. J Org Chem 2017; 82:10007-10014. [PMID: 28845671 DOI: 10.1021/acs.joc.7b01431] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Polyamide-polyamine hybrid macrobicycle L is explored with respect to its ability to bind α,ω-dicarboxylate anions. Potentiometric studies of protonated L with the series of dianions from succinate (suc2-) through glutarate (glu2-), α-ketoglutarate (kglu2-), adipate (adi2-), pimelate (pim2-), suberate (sub2-), to azelate (aze2-) have shown adipate preference with association constant value of K = 4900 M-1 in a H2O/DMSO (50:50 v/v) binary solvent mixture. The binding constant increases from glu2- to adi2- and then continuously decreases with the length of the anion chain. Further, potentiometric studies suggest that hydrogen bonding between the guest anions and the amide/ammonium protons of the receptor also contributes to the stability of the associations along with electrostatic interactions. Negative-mode electrospray ionization of aqueous solutions of host-guest complexes shows clear evidence for the selective formation of 1:1 complexes. Single-crystal X-ray structures of complexes of the receptor with glutaric acid, α-ketoglutaric acid, adipic acid, pimelic acid, suberic acid, and azelaic acid assist to understand the observed binding preferences. The solid-state structures reveal a size/shape complementarity between the host and the dicarboxylate anions, which is nicely reflected in the solution state binding studies.
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Affiliation(s)
- Sourav Chakraborty
- Department of Inorganic Chemistry, I ndian Association for the Cultivation of Science , 2A & 2B Raja S. C. Mullick Road, Kolkata - 700032, India
| | - Subrata Saha
- Department of Inorganic Chemistry, I ndian Association for the Cultivation of Science , 2A & 2B Raja S. C. Mullick Road, Kolkata - 700032, India
| | - Luís M P Lima
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa , Avenida da República, 2780-157 Oeiras Portugal
| | - Ulrike Warzok
- Institut für Chemie und Biochemie, Freien Universität Berlin , Takustrasse 3, 14195 Berlin ( Germany )
| | - Sayan Sarkar
- Department of Inorganic Chemistry, I ndian Association for the Cultivation of Science , 2A & 2B Raja S. C. Mullick Road, Kolkata - 700032, India
| | - Bidyut Akhuli
- Department of Inorganic Chemistry, I ndian Association for the Cultivation of Science , 2A & 2B Raja S. C. Mullick Road, Kolkata - 700032, India
| | - Mandira Nandi
- Department of Inorganic Chemistry, I ndian Association for the Cultivation of Science , 2A & 2B Raja S. C. Mullick Road, Kolkata - 700032, India
| | - Somnath Bej
- Department of Inorganic Chemistry, I ndian Association for the Cultivation of Science , 2A & 2B Raja S. C. Mullick Road, Kolkata - 700032, India
| | - Nayarassery N Adarsh
- Institut Catala de Nanociencia i Nanotecnologia (ICN2) , Edifici ICN2, Campus UAB, Cerdanyola del Valles 08193, Spain
| | - Christoph A Schalley
- Institut für Chemie und Biochemie, Freien Universität Berlin , Takustrasse 3, 14195 Berlin ( Germany )
| | - Rita Delgado
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa , Avenida da República, 2780-157 Oeiras Portugal
| | - Pradyut Ghosh
- Department of Inorganic Chemistry, I ndian Association for the Cultivation of Science , 2A & 2B Raja S. C. Mullick Road, Kolkata - 700032, India
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14
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El Sayed S, Milani M, Milanese C, Licchelli M, Martínez-Máñez R, Sancenón F. Anions as Triggers in Controlled Release Protocols from Mesoporous Silica Nanoparticles Functionalized with Macrocyclic Copper(II) Complexes. Chemistry 2016; 22:13935-13945. [DOI: 10.1002/chem.201601024] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2016] [Indexed: 12/24/2022]
Affiliation(s)
- Sameh El Sayed
- Centro de Reconocimiento Molecular y Desarrollo Tecnológico (IDM); Unidad Mixta Universidad Politécnica de Valencia-Universidad de Valencia; Spain
- Departamento de Química; Universidad Politécnica de Valencia; Camino de Vera s/n 46022 Valencia Spain
- CIBER de Bioingeniería; Biomateriales y Nanomedicina (CIBER-BBN)
- Dipartimento di Chimica; Università di Pavia; via Taramelli 12 27100 Pavia Italy
| | - Michele Milani
- Dipartimento di Chimica; Università di Pavia; via Taramelli 12 27100 Pavia Italy
| | - Chiara Milanese
- Dipartimento di Chimica; Università di Pavia; via Taramelli 12 27100 Pavia Italy
| | - Maurizio Licchelli
- Dipartimento di Chimica; Università di Pavia; via Taramelli 12 27100 Pavia Italy
| | - Ramón Martínez-Máñez
- Centro de Reconocimiento Molecular y Desarrollo Tecnológico (IDM); Unidad Mixta Universidad Politécnica de Valencia-Universidad de Valencia; Spain
- Departamento de Química; Universidad Politécnica de Valencia; Camino de Vera s/n 46022 Valencia Spain
- CIBER de Bioingeniería; Biomateriales y Nanomedicina (CIBER-BBN)
| | - Félix Sancenón
- Centro de Reconocimiento Molecular y Desarrollo Tecnológico (IDM); Unidad Mixta Universidad Politécnica de Valencia-Universidad de Valencia; Spain
- Departamento de Química; Universidad Politécnica de Valencia; Camino de Vera s/n 46022 Valencia Spain
- CIBER de Bioingeniería; Biomateriales y Nanomedicina (CIBER-BBN)
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Esteves CV, Mateus P, André V, Bandeira NAG, Calhorda MJ, Ferreira LP, Delgado R. Di- versus Trinuclear Copper(II) Cryptate for the Uptake of Dicarboxylate Anions. Inorg Chem 2016; 55:7051-60. [DOI: 10.1021/acs.inorgchem.6b00945] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Catarina V. Esteves
- Instituto de Tecnologia
Química e Biológica António Xavier, Universidade Nova de Lisboa, Av. da República, 2780-157 Oeiras, Portugal
| | - Pedro Mateus
- Instituto de Tecnologia
Química e Biológica António Xavier, Universidade Nova de Lisboa, Av. da República, 2780-157 Oeiras, Portugal
| | - Vânia André
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Avenida Rovisco Pais, 1049-001 Lisboa, Portugal
| | - Nuno A. G. Bandeira
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Avenida Rovisco Pais, 1049-001 Lisboa, Portugal
- Institut Català d’Investigació Química
(ICIQ), Barcelona Institute of Science and Technology (BIST), 16,
Av. Països Catalans, 43007 Tarragona, Spain
- Centro de Química
e Bioquímica, DQB, Faculdade de Ciências, Universidade de Lisboa, 1749-016 Lisboa, Portugal
| | - Maria José Calhorda
- Centro de Química
e Bioquímica, DQB, Faculdade de Ciências, Universidade de Lisboa, 1749-016 Lisboa, Portugal
| | - Liliana P. Ferreira
- BioISI, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, 1749-016 Lisboa, Portugal
- Department of Physics, University of Coimbra, 3004-516 Coimbra, Portugal
| | - Rita Delgado
- Instituto de Tecnologia
Química e Biológica António Xavier, Universidade Nova de Lisboa, Av. da República, 2780-157 Oeiras, Portugal
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16
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Mesquita LM, Herrera F, Esteves CV, Lamosa P, André V, Mateus P, Delgado R. Inhibition of the STAT3 Protein by a Dinuclear Macrocyclic Complex. Inorg Chem 2016; 55:3589-98. [PMID: 26999534 DOI: 10.1021/acs.inorgchem.6b00116] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
A new diethylenetriamine-derived macrocycle bearing 2-methylpyridyl arms and containing m-xylyl spacers, L, was prepared, and its dinuclear copper(II) and zinc(II) complexes were used as receptors for the recognition in aqueous solution of a phosphorylated peptide derived from a sequence of the STAT3 protein. A detailed study of the acid-base behavior of L and of its complexation properties as well as of the association of the phosphorylated peptide to the receptor was carried out by potentiometry in aqueous solution at 298.2 K and I = 0.10 M in KNO3. The data revealed that the receptor forms stable associations with several protonated forms of the substrate, with constant values ranging from 3.32 to 4.25 log units. The affinity of the receptor for the phosphorylated substrate studied is higher at a pH value where the receptor is mainly in the [Cu2L](4+) form and the pY residue of the substrate is in the dianionic form (pH 6.55). These results, also supported by (31)P NMR studies, showed that the phosphopeptide is bound through the phosphoryl group in a bridging mode. Additionally, the receptor inhibited binding between active (phosphorylated) STAT3 and its target DNA sequence in a dose-dependent manner (IC50 63 ± 3.4 μM) in human nuclear extracts in vitro. Treatment of whole cells with the inhibitor revealed that it is bioactive in living cells and has oncostatic properties that could be interesting for the fight against cancer and other pathologies involving the STAT3 protein.
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Affiliation(s)
- Lígia M Mesquita
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa , Avenida da República, 2780-157 Oeiras, Portugal
| | - Federico Herrera
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa , Avenida da República, 2780-157 Oeiras, Portugal
| | - Catarina V Esteves
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa , Avenida da República, 2780-157 Oeiras, Portugal
| | - Pedro Lamosa
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa , Avenida da República, 2780-157 Oeiras, Portugal
| | - Vânia André
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa , Avenida Rovisco Pais, 1049-001 Lisboa, Portugal
| | - Pedro Mateus
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa , Avenida da República, 2780-157 Oeiras, Portugal
| | - Rita Delgado
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa , Avenida da República, 2780-157 Oeiras, Portugal
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Abstract
The study of hydrogen bonding organocatalysis is rapidly expanding. Much research has been directed at making catalysts more active and selective, with less attention on fundamental design strategies. This study systematically increases steric hindrance at the active site of pH switchable urea organocatalysts. Incorporating strong intramolecular hydrogen bonds from protonated pyridines to oxygen stabilizes the active conformation of these ureas thus reducing the entropic penalty that results from substrate binding. The effect of increasing steric hindrance was studied by single crystal X-ray diffraction and by kinetics experiments of a benchmark reaction.
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Affiliation(s)
- Nicholas B Wageling
- Department of Chemistry and Biochemistry, University of Montana, Missoula MT, USA
| | - Daniel A Decato
- Department of Chemistry and Biochemistry, University of Montana, Missoula MT, USA
| | - Orion B Berryman
- Department of Chemistry and Biochemistry, University of Montana, Missoula MT, USA
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18
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Zhu Z, Xu L, Li H, Zhou X, Qin J, Yang C. A tetraphenylethene-based zinc complex as a sensitive DNA probe by coordination interaction. Chem Commun (Camb) 2015; 50:7060-2. [PMID: 24849252 DOI: 10.1039/c4cc02172j] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
We developed a new DNA probe by utilizing the coordination interaction of Zn(2+) with DNA and the consequent emission. Because the coordination interactions do not depend on the length of the DNA, the new probe exhibited much higher sensitivity for the detection of short ssDNA than the corresponding probe based on electrostatic interactions.
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Affiliation(s)
- Zece Zhu
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Hubei Key Lab on Organic and Polymeric Optoelectronic Materials, Department of Chemistry, Wuhan University, Wuhan, 430072, People's Republic of China.
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19
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Pitarch-Jarque J, Belda R, Lloret F, Ferrando-Soria J, Navarro P, Lopera A, García-España E. "3 + 1 = 6 + 2" in Cu(II) coordination chemistry of 1H-pyrazole aza cryptands. Dalton Trans 2015; 44:3378-83. [PMID: 25601042 DOI: 10.1039/c4dt03650f] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
A polyazamacrocycle formed from two tris(2-aminoethyl)amine units connected by 1H-pyrazole units shows unique hexanuclear Cu(ii) complexes by combination of two binuclear Cu(ii) cryptand complexes through pyrazolate moieties belonging to both cryptands. The formation of these dimeric entities has been proven both in solution by potentiometric studies and mass spectroscopy and in the solid state by X-ray diffraction of crystals of three different batches of formulae [Cu6(H-3)2(H2O)2](TsO)6·22H2O (), [Cu6(H-3)2(NO3)2](NO3)4·2H2O () and [Cu6(H-3)2Cl2]Cl4·(C4H5N3O2)2·14.35H2O (). The hexanuclear unit in and can be viewed like three magnetically independent binuclear complexes with J = -366(3) cm(-1), g = 2.08(1) for and J = -360(3) cm(-1), g = 2.07(1) for .
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Affiliation(s)
- Javier Pitarch-Jarque
- Instituto de Ciencia Molecular, Universidad de Valencia, C/ Catedrático José Beltrán no. 2, 46098, Paterna, Spain.
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20
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Haque SA, Bolhofner RL, Wong BM, Hossain A. Colorimetric and Optical Discrimination of Halides by a Simple Chemosensor. RSC Adv 2015; 5:38733-38741. [PMID: 26989484 DOI: 10.1039/c5ra02372f] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A thiophene-based tripodal copper(II) complex has been synthesized as a new colorimetric and optical chemosensor for naked-eye discrimination of halides in acetonitrile and an acetonitrile-water mixture. The binding interactions of the new receptor with several anions were analyzed by UV-Vis titrations, electrospray ionization mass spectrometric (ESI-MS) experiments and density functional theory (DFT) calculations. The results from UV-Vis titrations indicate that the coordinative unsaturated copper(II) complex strongly binds a halide at its vacant copper(II) centre via a metal-ligand bond forming a 1:1 complex, exhibiting binding affinities in the order of fluoride > chloride > bromide > iodide. The interactions of the receptor with halides were further confirmed by ESI-MS, showing a distinct signal corresponding to a 1:1 complex for each halide, suggesting that the noncovalent interactions also exist in the gas phase. In addition, time-dependent DFT (TD-DFT) calculations were also carried out to understand the excited-state properties of the chemosensor complexes. A detailed analysis of the TD-DFT calculations shows a consistent red-shift in the first optically-allowed transition, consistent with the observed colorimetric experiments.
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Affiliation(s)
- Syed A Haque
- Department of Chemistry and Biochemistry, Jackson State University, Jackson, MS 39217, USA
| | - Robert L Bolhofner
- Department of Chemistry and Biochemistry, Jackson State University, Jackson, MS 39217, USA
| | - Bryan M Wong
- Department of Chemical & Environmental Engineering and Materials Science & Engineering Program, University of California, Riverside, Riverside, CA 92521, USA
| | - Alamgir Hossain
- Department of Chemistry and Biochemistry, Jackson State University, Jackson, MS 39217, USA
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21
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Mateus P, Delgado R, André V, Duarte MT. Dicarboxylate Recognition Properties of a Dinuclear Copper(II) Cryptate. Inorg Chem 2014; 54:229-40. [DOI: 10.1021/ic502230q] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Pedro Mateus
- Instituto de Tecnologia Química
e Biológica António Xavier, Universidade Nova de Lisboa, Avenida da República, 2780-157 Oeiras, Portugal
| | - Rita Delgado
- Instituto de Tecnologia Química
e Biológica António Xavier, Universidade Nova de Lisboa, Avenida da República, 2780-157 Oeiras, Portugal
| | - Vânia André
- Centro de Química
Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Avenida Rovisco Pais, 1049-001 Lisboa, Portugal
| | - M. Teresa Duarte
- Centro de Química
Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Avenida Rovisco Pais, 1049-001 Lisboa, Portugal
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22
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Singhal D, Singh AK, Upadhyay A. Highly selective potentiometric and colorimetric determinations of cobalt (II) ion using thiazole based ligands. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2014; 45:216-24. [DOI: 10.1016/j.msec.2014.09.014] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2014] [Revised: 07/26/2014] [Accepted: 09/11/2014] [Indexed: 10/24/2022]
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23
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Rhaman MM, Alamgir A, Wong BM, Powell DR, Hossain MA. A highly efficient dinuclear Cu(II) chemosensor for colorimetric and fluorescent detection of cyanide in water. RSC Adv 2014; 4:54263-54267. [PMID: 28217299 PMCID: PMC5310325 DOI: 10.1039/c4ra10813b] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A novel dinuclear copper chemosensor selectively binds cyanide over a wide range of inorganic anions, enabling it to detect cyanide in water up to 0.02 ppm which is 10 times lower than the EPA standard for drinking water.
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Affiliation(s)
- Md Mhahabubur Rhaman
- Department of Chemistry and Biochemistry, Jackson State University Jackson, MS 39212, USA
| | - Azmain Alamgir
- Department of Chemistry and Biochemistry, Jackson State University Jackson, MS 39212, USA
| | - Bryan M Wong
- Department of Chemical & Environmental Engineering and Materials Science & Engineering Program, University of California-Riverside, Riverside, CA 92521
| | - Douglas R Powell
- Department of Chemistry and Biochemistry, University of Oklahoma, Norman, OK 7301
| | - Md Alamgir Hossain
- Department of Chemistry and Biochemistry, Jackson State University Jackson, MS 39212, USA
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24
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Rhaman MM, Fronczek FR, Powell DR, Hossain MA. Colourimetric and fluorescent detection of oxalate in water by a new macrocycle-based dinuclear nickel complex: a remarkable red shift of the fluorescence band. Dalton Trans 2014; 43:4618-21. [PMID: 24419223 PMCID: PMC3976989 DOI: 10.1039/c3dt53467g] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new macrocycle-based dinuclear nickel chemosensor selectively binds oxalate anions both in solution and the solid state, displaying a remarkable red shift of the fluorescence band with a visible colour change in water at physiological pH in the presence of an external dye.
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Affiliation(s)
- Md Mhahabubur Rhaman
- Department of Chemistry and Biochemistry, Jackson State University, Jackson, MS 39212, USA
| | - Frank R. Fronczek
- Department of Chemistry, Louisiana State University, Baton Rouge, LA 70803, USA.
| | - Douglas R. Powell
- Department of Chemistry and Biochemistry, University of Oklahoma, Norman, OK 73019, USA.
| | - Md. Alamgir Hossain
- Department of Chemistry and Biochemistry, Jackson State University, Jackson, MS 39212, USA
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25
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Chaloner L, Ottenwaelder X. High-yield synthesis of potentially ditopic coordinating cryptands and their metal complexes. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.04.074] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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