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Tetraruthenium Macrocycles with Laterally Extended Bis(alkenyl)quinoxaline Ligands and Their F4TCNQ•− Salts. INORGANICS 2022. [DOI: 10.3390/inorganics10060082] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
We report on the tetraruthenium macrocycles Ru4-5 and -6 with a π-conjugated pyrene-appended 5,8-divinylquinoxaline ligand and either isophthalate or thiophenyl-2,5-dicarboxylate linkers and their charge-transfer salts formed by oxidation with two equivalents of F4TCNQ. Both macrocyclic complexes were characterized by NMR spectroscopy, mass spectrometry, cyclic and square-wave voltammetry, and by IR, UV–vis–NIR, and EPR spectroscopy in their various oxidation states.
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Danjo H, Masuda Y, Kidena Y, Kawahata M, Ohara K, Yamaguchi K. Preparation of cage-shaped hexakis(spiroborate)s. Org Biomol Chem 2020; 18:3717-3723. [PMID: 32363369 DOI: 10.1039/d0ob00518e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In previous research studies, various types of prismatic cage-shaped molecular containers have been prepared and evaluated in terms of their guest inclusion properties. Basically, most of these molecular cages have a cationic or electron-deficient nature, and exhibit strong affinity mainly toward electron-rich aromatic guests. On the other hand, there is no report concerning anionic prismatic cages that are expected to recognize cationic polyaromatic guests with various structures and functions. In this manuscript, we present the preparation of hexakis(spiroborate)-type molecular cages, which was achieved by the reaction of phenylene- or biphenylenebis(dihydroxynaphthalene), hexahydroxytriphenylene, and boric acid in N,N-dimethylformamide. Their triangular prismatic hollow structures were confirmed by X-ray crystallographic analysis, and it was found that both phenylene- and biphenylene-bridged spiroborate cages have internal cavities of the corresponding size. It was also revealed that tetra(n-butylammonium) cations located inside the cavity and between the two adjacent spiroborate cages resulted in the formation of a one-dimensional columnar array. The molecular recognition behavior of the spiroborate cages was evaluated using tris(pyridinium)triazines as tricationic aromatic guests. 1H NMR measurement implied that a discrete 1 : 1 host-guest complex was formed when 1 equiv. of guest was added to the cage, whereas infinite one-dimensional aromatic stacks were constructed by the addition of 2 equiv. of guest.
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Affiliation(s)
- Hiroshi Danjo
- Department of Chemistry, Konan University, 8-9-1 Okamoto, Higashinada, Kobe 658-8501, Japan.
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Štarha P, Hošek J, Trávníček Z, Dvořák Z. Cytotoxic dimeric half‐sandwich Ru(II), Os(II) and Ir(III) complexes containing the 4,4′‐biphenyl‐based bridging ligands. Appl Organomet Chem 2020. [DOI: 10.1002/aoc.5785] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Pavel Štarha
- Division of Biologically Active Complexes and Molecular Magnets, Regional Centre of Advanced Technologies and Materials, Faculty of SciencePalacký University in Olomouc Šlechtitelů 27 Olomouc 783 71 Czech Republic
| | - Jan Hošek
- Division of Biologically Active Complexes and Molecular Magnets, Regional Centre of Advanced Technologies and Materials, Faculty of SciencePalacký University in Olomouc Šlechtitelů 27 Olomouc 783 71 Czech Republic
| | - Zdeněk Trávníček
- Division of Biologically Active Complexes and Molecular Magnets, Regional Centre of Advanced Technologies and Materials, Faculty of SciencePalacký University in Olomouc Šlechtitelů 27 Olomouc 783 71 Czech Republic
| | - Zdeněk Dvořák
- Division of Biologically Active Complexes and Molecular Magnets, Regional Centre of Advanced Technologies and Materials, Faculty of SciencePalacký University in Olomouc Šlechtitelů 27 Olomouc 783 71 Czech Republic
- Department of Cell Biology and Genetics, Faculty of SciencePalacký University in Olomouc Šlechtitelů 27 Olomouc 783 71 Czech Republic
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Wang Y, Huang H, Zhang Q, Zhang P. Chirality in metal-based anticancer agents. Dalton Trans 2018; 47:4017-4026. [DOI: 10.1039/c8dt00089a] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Chiral metal-based drugs are currently an interesting and rapidly growing field in anticancer research. Here the different chiral metal-based anticancer agents and the extent to which the chiral resolution affects their biological properties are discussed. This review will aid the design of new potent and efficient chiral metal-based anticancer drugs that exploit the unique properties combined with their potential selectivity toward targeted chiral biomolecules.
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Affiliation(s)
- Yi Wang
- College of Chemistry and Environmental Engineering
- Shenzhen University
- Shenzhen
- 518060
- P. R. China
| | - Huaiyi Huang
- Department of Chemistry
- University of Warwick
- Coventry
- UK
| | - Qianling Zhang
- College of Chemistry and Environmental Engineering
- Shenzhen University
- Shenzhen
- 518060
- P. R. China
| | - Pingyu Zhang
- College of Chemistry and Environmental Engineering
- Shenzhen University
- Shenzhen
- 518060
- P. R. China
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Casini A, Woods B, Wenzel M. The Promise of Self-Assembled 3D Supramolecular Coordination Complexes for Biomedical Applications. Inorg Chem 2017; 56:14715-14729. [PMID: 29172467 DOI: 10.1021/acs.inorgchem.7b02599] [Citation(s) in RCA: 148] [Impact Index Per Article: 21.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
In the supramolecular chemistry field, coordination-driven self-assembly has provided the basis for tremendous growth across many subdisciplines, spanning from fundamental investigations regarding the design and synthesis of new architectures to defining different practical applications. Within this framework, supramolecular coordination complexes (SCCs), defined as large chemical entities formed from smaller precursor building blocks of ionic metal nodes and organic multidentate ligands, resulting in intricate and well-defined supramolecular structures, hold great promise. Notably, interest in the construction of discrete 3D molecular architectures, such as those offered by SCCs, has experienced extraordinary progress because of their potential application as sensors, catalysts, probes, and containers and in basic host-guest chemistry. Despite numerous synthetic efforts and a number of inherent favorable properties, the field of 3D SCCs for biomedical applications is still in its infancy. This Viewpoint focuses on 3D SCCs, specifically metallacages and helicates, first briefly presenting the fundamentals in terms of the synthesis and characterization of their host-guest properties, followed by an overview of the possible biological applications with representative examples. Thus, emphasis will be given in particular to metallacages as drug delivery systems and to chiral helicates as DNA recognition domains. Overall, we will provide an update on the state-of-the-art literature and will define the challenges in this fascinating research area at the interface of different disciplines.
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Affiliation(s)
- Angela Casini
- School of Chemistry, Cardiff University , Main Building, Park Place, CF10 3AT Cardiff, United Kingdom
| | - Benjamin Woods
- School of Chemistry, Cardiff University , Main Building, Park Place, CF10 3AT Cardiff, United Kingdom
| | - Margot Wenzel
- School of Chemistry, Cardiff University , Main Building, Park Place, CF10 3AT Cardiff, United Kingdom
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8
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Büchel GE, Kossatz S, Sadique A, Rapta P, Zalibera M, Bucinsky L, Komorovsky S, Telser J, Eppinger J, Reiner T, Arion VB. cis-Tetrachlorido-bis(indazole)osmium(iv) and its osmium(iii) analogues: paving the way towards the cis-isomer of the ruthenium anticancer drugs KP1019 and/or NKP1339. Dalton Trans 2017; 46:11925-11941. [PMID: 28850133 PMCID: PMC5605806 DOI: 10.1039/c7dt02194a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The relationship between cis-trans isomerism and anticancer activity has been mainly addressed for square-planar metal complexes, in particular, for platinum(ii), e.g., cis- and trans-[PtCl2(NH3)2], and a number of related compounds, of which, however, only cis-counterparts are in clinical use today. For octahedral metal complexes, this effect of geometrical isomerism on anticancer activity has not been investigated systematically, mainly because the relevant isomers are still unavailable. An example of such an octahedral complex is trans-[RuCl4(Hind)2]-, which is in clinical trials now as its indazolium (KP1019) or sodium salt (NKP1339), but the corresponding cis-isomers remain inaccessible. We report the synthesis of Na[cis-OsIIICl4(κN2-1H-ind)2]·(Na[1]) suggesting a route to the cis-isomer of NKP1339. The procedure involves heating (H2ind)[OsIVCl5(κN1-2H-ind)] in a high boiling point organic solvent resulting in an Anderson rearrangement with the formation of cis-[OsIVCl4(κN2-1H-ind)2] ([1]) in high yield. The transformation is accompanied by an indazole coordination mode switch from κN1 to κN2 and stabilization of the 1H-indazole tautomer. Fully reversible spectroelectrochemical reduction of [1] in acetonitrile at 0.46 V vs. NHE is accompanied by a change in electronic absorption bands indicating the formation of cis-[OsIIICl4(κN2-1H-ind)2]- ([1]-). Chemical reduction of [1] in methanol with NaBH4 followed by addition of nBu4NCl afforded the osmium(iii) complex nBu4N[cis-OsIIICl4(κN2-1H-ind)2] (nBu4N[1]). A metathesis reaction of nBu4N[1] with an ion exchange resin led to the isolation of the water-soluble salt Na[1]. The X-ray diffraction crystal structure of [1]·Me2CO was determined and compared with that of trans-[OsIVCl4(κN2-1H-ind)2]·2Me2SO (2·2Me2SO), also prepared in this work. EPR spectroscopy was performed on the OsIII complexes and the results were analyzed by ligand-field and quantum chemical theories. We furthermore assayed effects of [1] and Na[1] on cell viability and proliferation in comparison with trans-[OsIVCl4(κN1-2H-ind)2] [3] and cisplatin and found a strong reduction of cell viability at concentrations between 30 and 300 μM in different cancer cell lines (HT29, H446, 4T1 and HEK293). HT-29 cells are less sensitive to cisplatin than 4T1 cells, but more sensitive to [1] and Na[1], as shown by decreased proliferation and viability as well as an increased late apoptotic/necrotic cell population.
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Affiliation(s)
- Gabriel E Büchel
- Division of Physical Sciences and Engineering, KAUST Catalysis Center, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia and Department of Radiology, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, New York 10065, USA
| | - Susanne Kossatz
- Department of Radiology, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, New York 10065, USA
| | - Ahmad Sadique
- Department of Radiology, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, New York 10065, USA
| | - Peter Rapta
- Slovak University of Technology, Institute of Physical Chemistry and Chemical Physics, Radlinského 9, 81237 Bratislava, Slovakia.
| | - Michal Zalibera
- Slovak University of Technology, Institute of Physical Chemistry and Chemical Physics, Radlinského 9, 81237 Bratislava, Slovakia.
| | - Lukas Bucinsky
- Slovak University of Technology, Institute of Physical Chemistry and Chemical Physics, Radlinského 9, 81237 Bratislava, Slovakia.
| | - Stanislav Komorovsky
- Institute of Inorganic Chemistry, Slovak Academy of Sciences, Dúbravská cesta 9, SK-84536 Bratislava, Slovakia
| | - Joshua Telser
- Department of Biological, Chemical and Physical Sciences, Roosevelt University, 430 S. Michigan Avenue, Chicago, Illinois 60605, USA.
| | - Jörg Eppinger
- Division of Physical Sciences and Engineering, KAUST Catalysis Center, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
| | - Thomas Reiner
- Department of Radiology, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, New York 10065, USA and Department of Radiology, Weill Cornell Medical College, New York, NY 10065, USA
| | - Vladimir B Arion
- University of Vienna, Faculty of Chemistry, Institute of Inorganic Chemistry, Währinger Str. 42, A-1090 Vienna, Austria.
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Scheerer S, Linseis M, Wuttke E, Weickert S, Drescher M, Tröppner O, Ivanović-Burmazović I, Irmler A, Pauly F, Winter RF. Redox-Active Tetraruthenium Macrocycles Built from 1,4-Divinylphenylene-Bridged Diruthenium Complexes. Chemistry 2016; 22:9574-90. [PMID: 27270860 DOI: 10.1002/chem.201601384] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2016] [Indexed: 11/09/2022]
Abstract
Metallamacrocylic tetraruthenium complexes were generated by treatment of 1,4-divinylphenylene-bridged diruthenium complexes with functionalized 1,3-benzene dicarboxylic acids and characterized by HR ESI-MS and multinuclear NMR spectroscopy. Every divinylphenylene diruthenium subunit is oxidized in two consecutive one-electron steps with half-wave potential splittings in the range of 250 to 330 mV. Additional, smaller redox-splittings between the +/2+ and 0/+ and the 3+/4+ and 2+/3+ redox processes, corresponding to the first and the second oxidations of every divinylphenylene diruthenium entity, are due to electrostatic effects. The lack of electronic coupling through bond or through space is explained by the nodal properties of the relevant molecular orbitals and the lateral side-by-side arrangement of the divinylphenylene linkers. The polyelectrochromic behavior of the divinylphenylene diruthenium precursors is retained and even amplified in these metallamacrocyclic structures. EPR studies down to T=4 K indicate that the dications 1-H(2+) and 1-OBu(2+) are paramagnetic. The dications and the tetracation of macrocycle 3-H display intense (dications) or weak (3-H(4+) ) EPR signals. Quantum chemical calculations indicate that the four most stable conformers of the macrocycles are largely devoid of strain. Bond parameters, energies as well as charge and spin density distributions of model macrocycle 5-H(Me) were calculated for the different charge and spin states.
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Affiliation(s)
- Stefan Scheerer
- Fachbereich Chemie, Universität Konstanz, Universitätsstraße 10, 78457, Konstanz, Germany
| | - Michael Linseis
- Fachbereich Chemie, Universität Konstanz, Universitätsstraße 10, 78457, Konstanz, Germany
| | - Evelyn Wuttke
- Fachbereich Chemie, Universität Konstanz, Universitätsstraße 10, 78457, Konstanz, Germany.,Boehringer Ingelheim Pharma GmbH & CO. KG, Birkendorfer Straße 65, 88397, Biberach a. d. Riß, Germany
| | - Sabrina Weickert
- Fachbereich Chemie, Universität Konstanz, Universitätsstraße 10, 78457, Konstanz, Germany
| | - Malte Drescher
- Fachbereich Chemie, Universität Konstanz, Universitätsstraße 10, 78457, Konstanz, Germany
| | - Oliver Tröppner
- Department of Chemistry and Pharmacy, Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstraße 1, 91058, Erlangen, Germany
| | - Ivana Ivanović-Burmazović
- Department of Chemistry and Pharmacy, Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstraße 1, 91058, Erlangen, Germany
| | - Andreas Irmler
- Fachbereich Physik, Universität Konstanz, Universitätsstraße 10, 78457, Konstanz, Germany
| | - Fabian Pauly
- Fachbereich Physik, Universität Konstanz, Universitätsstraße 10, 78457, Konstanz, Germany.
| | - Rainer F Winter
- Fachbereich Chemie, Universität Konstanz, Universitätsstraße 10, 78457, Konstanz, Germany.
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Fink D, Weibert B, Winter RF. Redox-active tetraruthenium metallacycles: reversible release of up to eight electrons resulting in strong electrochromism. Chem Commun (Camb) 2016; 52:6103-6. [DOI: 10.1039/c6cc00936k] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Tetraruthenium macrocycles with 1,4-divinylphenylene and diarylamine-substituted isophthalic acids as the sides display up to eight one-electron redox steps and rich electrochromic behaviour with strong absorptions of the dications in the near infrared and of the tetra- and hexacations at low energies in the visible.
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Affiliation(s)
- Daniel Fink
- Fachbereich Chemie
- Universität Konstanz
- D-78453 Konstanz
- Germany
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11
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Ahmedova A, Mihaylova R, Momekova D, Shestakova P, Stoykova S, Zaharieva J, Yamashina M, Momekov G, Akita M, Yoshizawa M. M2L4 coordination capsules with tunable anticancer activity upon guest encapsulation. Dalton Trans 2016; 45:13214-21. [DOI: 10.1039/c6dt01801g] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Guest encapsulation can modulate the cytotoxicity of anthracene-based nano-capsules and broaden their applications from metallodrugs to biocompatible delivery systems.
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Affiliation(s)
- Anife Ahmedova
- Faculty of Chemistry and Pharmacy
- University of Sofia
- Sofia 1164
- Bulgaria
| | | | - Denitsa Momekova
- Faculty of Pharmacy
- Medical University of Sofia
- Sofia 1000
- Bulgaria
| | - Pavletta Shestakova
- NMR Laboratory
- Institute of Organic Chemistry with Centre of Phytochemistry
- Bulgarian Academy of Sciences
- Sofia 1113
- Bulgaria
| | - Silviya Stoykova
- Faculty of Chemistry and Pharmacy
- University of Sofia
- Sofia 1164
- Bulgaria
| | - Joana Zaharieva
- Faculty of Chemistry and Pharmacy
- University of Sofia
- Sofia 1164
- Bulgaria
| | - Masahiro Yamashina
- Laboratory for Chemistry and Life Science
- Institute of Innovative Research
- Tokyo Institute of Technology
- Yokohama 226-8503
- Japan
| | - Georgi Momekov
- Faculty of Pharmacy
- Medical University of Sofia
- Sofia 1000
- Bulgaria
| | - Munetaka Akita
- Laboratory for Chemistry and Life Science
- Institute of Innovative Research
- Tokyo Institute of Technology
- Yokohama 226-8503
- Japan
| | - Michito Yoshizawa
- Laboratory for Chemistry and Life Science
- Institute of Innovative Research
- Tokyo Institute of Technology
- Yokohama 226-8503
- Japan
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12
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Ahmedova A, Momekova D, Yamashina M, Shestakova P, Momekov G, Akita M, Yoshizawa M. Anticancer Potencies of PtII
- and PdII
-linked M2
L4
Coordination Capsules with Improved Selectivity. Chem Asian J 2015; 11:474-7. [DOI: 10.1002/asia.201501238] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2015] [Indexed: 12/18/2022]
Affiliation(s)
- Anife Ahmedova
- Faculty of Chemistry and Pharmacy; Sofia University, 1; J. Bourchier blvd. Sofia 1164 Bulgaria
| | - Denitsa Momekova
- Faculty of Pharmacy; Medical University of Sofia; 2 Dunav Street Sofia 1000 Bulgaria
| | - Masahiro Yamashina
- Chemical Resources Laboratory; Tokyo Institute of Technology; 4259 Nagatsuta Midori-ku Yokohama 226-8503 Japan
| | - Pavletta Shestakova
- NMR Laboratory; Institute of Organic Chemistry with Centre of Phytochemistry; Bulgarian Academy of Sciences; Acad. G. Bonchev Str., Bl. 9 Sofia 1113 Bulgaria
| | - Georgi Momekov
- Faculty of Pharmacy; Medical University of Sofia; 2 Dunav Street Sofia 1000 Bulgaria
| | - Munetaka Akita
- Chemical Resources Laboratory; Tokyo Institute of Technology; 4259 Nagatsuta Midori-ku Yokohama 226-8503 Japan
| | - Michito Yoshizawa
- Chemical Resources Laboratory; Tokyo Institute of Technology; 4259 Nagatsuta Midori-ku Yokohama 226-8503 Japan
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Romero-Canelón I, Phoenix B, Pitto-Barry A, Tran J, Soldevila-Barreda JJ, Kirby N, Green S, Sadler PJ, Barry NP. Arene ruthenium dithiolato–carborane complexes for boron neutron capture therapy (BNCT). J Organomet Chem 2015. [DOI: 10.1016/j.jorganchem.2015.05.011] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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14
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Wragg AB, Metherell AJ, Cullen W, Ward MD. Stepwise assembly of mixed-metal coordination cages containing both kinetically inert and kinetically labile metal ions: introduction of metal-centred redox and photophysical activity at specific sites. Dalton Trans 2015; 44:17939-49. [PMID: 26406288 DOI: 10.1039/c5dt02957k] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Stepwise preparation of the heterometallic octanuclear coordination cages [(M(a))4(M(b))4L12](16+) is reported, in which M(a) = Ru or Os and M(b) = Cd or Co (all in their +2 oxidation state). This requires initial preparation of the kinetically inert mononuclear complexes [(M(a))L3](2+) in which L is a ditopic ligand with two bidentate chelating pyrazolyl-pyridine units: in the complexes [(M(a))L3](2+) one terminus of each ligand is bound to the metal ion, such that the complex has three pendant bidentate sites at which cage assembly can propagate by coordination to additional labile ions M(b) in a separate step. Thus, combination of four [(M(a))L3](2+) units and four [M(b)](2+) ions results in assembly of the complete cages [(M(a))4(M(b))4L12](16+) in which a metal ion lies at each of the eight vertices, and a bridging ligand spans each of the twelve edges, of a cube. The different types of metal ion necessarily alternate around the periphery with each bridging ligand bound to one metal ion of each type. All four cages have been structurally characterised: in the Ru(ii)/Cd(ii) cage (reported in a recent communication) the Ru(ii) and Cd(ii) ions are crystallographically distinct; in the other three cages [Ru(ii)/Co(ii), Os(ii)/Cd(ii) and Os(ii)/Co(ii), reported here] the ions are disordered around the periphery such that every metal site refines as a 50 : 50 mixture of the two metal atom types. The incorporation of Os(ii) units into the cages results in both redox activity [a reversible Os(ii)/Os(iii) couple for all four metal ions simultaneously, at a modest potential] and luminescence [the Os(ii) units have luminescent (3)MLCT excited states which will be good photo-electron donors] being incorporated into the cage superstructure.
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Affiliation(s)
- Ashley B Wragg
- Department of Chemistry, University of Sheffield, Sheffield S3 7HF, UK.
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Barry NPE, Pitto-Barry A, Romero-Canelón I, Tran J, Soldevila-Barreda JJ, Hands-Portman I, Smith CJ, Kirby N, Dove AP, O'Reilly RK, Sadler PJ. Precious metal carborane polymer nanoparticles: characterisation of micellar formulations and anticancer activity. Faraday Discuss 2015; 175:229-40. [PMID: 25270092 DOI: 10.1039/c4fd00098f] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report the encapsulation of highly hydrophobic 16-electron organometallic ruthenium and osmium carborane complexes [Ru/Os(p-cymene)(1,2-dicarba-closo-dodecarborane-1,2-dithiolate)] ( and ) in Pluronic® triblock copolymer P123 core-shell micelles. The spherical nanoparticles and , dispersed in water, were characterized by dynamic light scattering (DLS), cryogenic transmission electron microscopy (cryo-TEM), and synchrotron small-angle X-ray scattering (SAXS; diameter ca. 15 and 19 nm, respectively). Complexes and were highly active towards A2780 human ovarian cancer cells (IC(50) 0.17 and 2.50 μM, respectively) and the encapsulated complexes, as and nanoparticles, were less potent (IC(50) 6.69 μM and 117.5 μM, respectively), but more selective towards cancer cells compared to normal cells.
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Affiliation(s)
- Nicolas P E Barry
- Department of Chemistry, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, UK.
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16
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Abstract
Arene ruthenium complexes have become popular building blocks for the preparation of metalla-assemblies with biological applications, opening a new era for arene ruthenium complexes.
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Affiliation(s)
- Bruno Therrien
- Institute of Chemistry
- University of Neuchatel
- CH-2000 Neuchatel, Switzerland
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17
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Nagarajaprakash R, Govindarajan R, Manimaran B. One-pot synthesis of oxamidato-bridged hexarhenium trigonal prisms adorned with ester functionality. Dalton Trans 2015; 44:11732-40. [DOI: 10.1039/c5dt01102g] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
The self-assembly of hexarhenium trigonal prisms using fac-Re(CO)3 cores (pink), bischelating oxamide ligands (green) and ester-containing tritopic linkers (blue) has been accomplished via an orthogonal bonding approach.
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Affiliation(s)
| | - R. Govindarajan
- Department of Chemistry
- Pondicherry University
- Puducherry
- India
| | - Bala. Manimaran
- Department of Chemistry
- Pondicherry University
- Puducherry
- India
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18
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Gupta G, Mahesh Kumar J, Garci A, Rangaraj N, Nagesh N, Therrien B. Anticancer Activity of Half-Sandwich RhIIIand IrIIIMetalla-Prisms Containing Lipophilic Side Chains. Chempluschem 2014; 79:610-618. [DOI: 10.1002/cplu.201300425] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2013] [Revised: 02/07/2014] [Indexed: 12/30/2022]
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19
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Nazarov AA, Hartinger CG, Dyson PJ. Opening the lid on piano-stool complexes: An account of ruthenium(II)–arene complexes with medicinal applications. J Organomet Chem 2014. [DOI: 10.1016/j.jorganchem.2013.09.016] [Citation(s) in RCA: 209] [Impact Index Per Article: 20.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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20
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Govender P, Edafe F, Makhubela BC, Dyson PJ, Therrien B, Smith GS. Neutral and cationic osmium(II)-arene metallodendrimers: Synthesis, characterisation and anticancer activity. Inorganica Chim Acta 2014. [DOI: 10.1016/j.ica.2013.05.025] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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Therrien B. Transporting and shielding photosensitisers by using water-soluble organometallic cages: a new strategy in drug delivery and photodynamic therapy. Chemistry 2013; 19:8378-86. [PMID: 23737435 DOI: 10.1002/chem.201301348] [Citation(s) in RCA: 111] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Skin photosensitivity remains one of the main limitations in photodynamic therapy. In this Concept article a strategy to overcome this limitation is described, in which the photosensitizer is hidden inside the hydrophobic cavity of a water-soluble organometallic cage. The metallacage not only protects the photosensitizer from light, it also facilitates its delivery to cancer cells.
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Affiliation(s)
- Bruno Therrien
- Institute of Chemistry, University of Neuchatel, Ave de Bellevaux 51, 2000 Neuchatel, Switzerland.
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Barry NPE, Sadler PJ. Exploration of the medical periodic table: towards new targets. Chem Commun (Camb) 2013; 49:5106-31. [DOI: 10.1039/c3cc41143e] [Citation(s) in RCA: 570] [Impact Index Per Article: 51.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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