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Empel C, Fetzer MNA, Sasmal S, Strothmann T, Janiak C, Koenigs RM. Unlocking catalytic potential: a rhodium(II)-based coordination polymer for efficient carbene transfer reactions with donor/acceptor diazoalkanes. Chem Commun (Camb) 2024; 60:7327-7330. [PMID: 38913109 DOI: 10.1039/d4cc01386g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/25/2024]
Abstract
Herein, we report the use of a molecular-defined rhodium(II) coordination polymer (Rh-CP) as a heterogeneous, recyclable catalyst in carbene transfer reactions. We showcase the application of this heterogeneous catalyst in a range of carbene transfer reactions and conclude with the functionalization of natural products and drug molecules.
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Affiliation(s)
- Claire Empel
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany.
| | - Marcus N A Fetzer
- Institut für Anorganische Chemie und Strukturchemie, Heinrich-Heine-Universität Düsseldorf, Universitätsstraße 1, 40225 Düsseldorf, Germany
| | - Suman Sasmal
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany.
| | - Till Strothmann
- Institut für Anorganische Chemie und Strukturchemie, Heinrich-Heine-Universität Düsseldorf, Universitätsstraße 1, 40225 Düsseldorf, Germany
| | - Christoph Janiak
- Institut für Anorganische Chemie und Strukturchemie, Heinrich-Heine-Universität Düsseldorf, Universitätsstraße 1, 40225 Düsseldorf, Germany
| | - Rene M Koenigs
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany.
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2
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Binding of histidine and human serum albumin to dirhodium(II) tetraacetate. J Inorg Biochem 2021; 224:111556. [PMID: 34425475 DOI: 10.1016/j.jinorgbio.2021.111556] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Revised: 07/08/2021] [Accepted: 07/16/2021] [Indexed: 10/20/2022]
Abstract
Reactions of the anticancer active dirhodium tetraacetate (1), Rh2(AcO)4 (AcO- = CH3COO-), with the amino acid histidine (HHis) and human serum albumin (HSA) were monitored over time and different metal: ligand ratios using UV-vis spectroscopy and/or electro-spray ionization mass spectrometry. Initially, histidine formed 1:1 and 1:2 adducts in aqueous solutions. The crystal structure of Rh2(AcO)4(L-HHis)2·2H2O (2) confirmed the axial coordination of histidine imidazole groups (average Rh-Naxial 2.23 Å). These adducts, however, were found to be unstable in solution over time (24 h). Heating Rh2(AcO)4 -histidine solutions to 40 °C (near body temperature) or 95 °C accelerated the formation of RhII2(AcO)2(His)2 and RhIII(His)2(AcO) complexes. The corresponding pH change from neutral to mildly acid (pH 4-5) indicates deprotonation of histidine NH3+ groups due to coordination to Rh ions, which simultaneously bind to histidine COO- groups, as evidenced by 13C NMR spectroscopy. In the case of HSA with 16 histidine and one cysteine residues, UV-vis spectroscopy indicates that mono- and di-histidine HSA adducts with Rh2(AcO)4 are formed. X-ray absorption spectroscopy showed almost the same Rh-Rh distance (2.41 ± 0.01 Å) for the Rh2(AcO)4 units as in 2, and a contribution from an axial thiol coordination (Rh-Saxial 2.62 ± 0.05 Å). The Rh2(AcO)4 - HSA complex was found to decompose partially (~15%) over 24 h at ambient temperature. The partial decomposition of Rh2(AcO)4 both through coordination to histidine or to human serum albumin, the most abundant protein in blood plasma, is a factor to consider for its efficacy as a potential anticancer agent.
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Grancha T, Carné-Sánchez A, Hernández-López L, Albalad J, Imaz I, Juanhuix J, Maspoch D. Phase Transfer of Rhodium(II)-Based Metal–Organic Polyhedra Bearing Coordinatively Bound Cargo Enables Molecular Separation. J Am Chem Soc 2019; 141:18349-18355. [DOI: 10.1021/jacs.9b10403] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Thais Grancha
- Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and The Barcelona Institute of Science and Technology, Campus UAB, Bellaterra, 08193 Barcelona, Spain
| | - Arnau Carné-Sánchez
- Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and The Barcelona Institute of Science and Technology, Campus UAB, Bellaterra, 08193 Barcelona, Spain
| | - Laura Hernández-López
- Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and The Barcelona Institute of Science and Technology, Campus UAB, Bellaterra, 08193 Barcelona, Spain
| | - Jorge Albalad
- Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and The Barcelona Institute of Science and Technology, Campus UAB, Bellaterra, 08193 Barcelona, Spain
| | - Inhar Imaz
- Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and The Barcelona Institute of Science and Technology, Campus UAB, Bellaterra, 08193 Barcelona, Spain
| | - Judith Juanhuix
- ALBA Synchrotron, 08290 Cerdanyola del Vallès, Barcelona, Spain
| | - Daniel Maspoch
- Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and The Barcelona Institute of Science and Technology, Campus UAB, Bellaterra, 08193 Barcelona, Spain
- ICREA, Pg. Lluís Companys 23, 08010 Barcelona, Spain
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Enriquez Garcia A, Jalilehvand F, Niksirat P. Reactions of Rh 2(CH 3COO) 4 with thiols and thiolates: a structural study. JOURNAL OF SYNCHROTRON RADIATION 2019; 26:450-461. [PMID: 30855255 PMCID: PMC6412178 DOI: 10.1107/s160057751900033x] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Accepted: 01/07/2019] [Indexed: 06/09/2023]
Abstract
The structural differences between the aerobic reaction products of Rh2(AcO)4 (1; AcO- = CH3COO-) with thiols and thiolates in non-aqueous media are probed by X-ray absorption spectroscopy. For this study, ethanethiol, dihydrolipoic acid (DHLA; a dithiol) and their sodium thiolate salts were used. Coordination of simple thiols to the axial positions of Rh2(AcO)4 with Rh-SH bonds of 2.5-2.6 Å keeps the RhII-RhII bond intact (2.41 ± 0.02 Å) but leads to a colour change from emerald green to burgundy. Time-dependent density functional theory (TD-DFT) calculations were performed to explain the observed shifts in the electronic (UV-vis) absorption spectra. The corresponding sodium thiolates, however, break up the Rh2(AcO)4 framework in the presence of O2 to form an oligomeric chain of triply S-bridged Rh(III) ions, each with six Rh-S (2.36 ± 0.02 Å) bonds. The RhIII...RhIII distance, 3.18 ± 0.02 Å, in the chain is similar to that previously found for the aerobic reaction product from aqueous solutions of Rh2(AcO)4 and glutathione (H3A), {Na2[Rh2III(HA)4]·7H2O}n, in which each Rh(III) ion is surrounded by about four Rh-S (2.33 ± 0.02 Å) and about two Rh-O (2.08 ± 0.02 Å). The reaction products obtained in this study can be used to predict how dirhodium(II) tetracarboxylates would react with cysteine-rich proteins and peptides, such as metallothioneins.
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Affiliation(s)
- Alejandra Enriquez Garcia
- Department of Chemistry, University of Calgary, 2500 University Drive NW, Calgary, Alberta, Canada T2N 1N4
| | - Farideh Jalilehvand
- Department of Chemistry, University of Calgary, 2500 University Drive NW, Calgary, Alberta, Canada T2N 1N4
| | - Pantea Niksirat
- Department of Chemistry, University of Calgary, 2500 University Drive NW, Calgary, Alberta, Canada T2N 1N4
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Medvedev JJ, Efimov IV, Shafran YM, Suslonov VV, Bakulev VA, Nikolaev VA. Rh(II)-mediated domino [4 + 1]-annulation of α-cyanothioacetamides using diazoesters: A new entry for the synthesis of multisubstituted thiophenes. Beilstein J Org Chem 2017; 13:2569-2576. [PMID: 29259666 PMCID: PMC5727864 DOI: 10.3762/bjoc.13.253] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2017] [Accepted: 11/14/2017] [Indexed: 12/28/2022] Open
Abstract
A new approach towards the synthesis of multisubstituted thiophenes is elaborated based on Rh(II)-catalyzed domino reactions of acyclic diazoesters with α-cyanothioacetamides. It provides a way for the preparation of 5-amino-3-(alkoxycarbonylamino)thiophene-2-carboxylates, 2-(5-amino-2-methoxycarbonylthiophene-3-yl)aminomalonates and (2-cyano-5-aminothiophene-3-yl)carbamates with the preparative yields of up to 67%. It was also shown that α-cyanothioacetamides easily interact with dirhodium carboxylates to give rather stable 2:1 complexes, resulting in an evident decrease in the efficiency of the catalytic process at moderate temperatures (20–30 °C).
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Affiliation(s)
- Jury J Medvedev
- Department of Organic Chemistry, St-Petersburg State University, 26 University pr., 198504, Saint-Petersburg, Russia
| | - Ilya V Efimov
- Institute of Chemistry and Technology, Ural Federal University, 19 Mira Str., 620002, Ekaterinburg, Russia
| | - Yuri M Shafran
- Institute of Chemistry and Technology, Ural Federal University, 19 Mira Str., 620002, Ekaterinburg, Russia
| | - Vitaliy V Suslonov
- Center for X-ray Diffraction Studies, St-Petersburg State University, 26 University pr., 198504, Saint-Petersburg, Russia
| | - Vasiliy A Bakulev
- Institute of Chemistry and Technology, Ural Federal University, 19 Mira Str., 620002, Ekaterinburg, Russia
| | - Valerij A Nikolaev
- Department of Organic Chemistry, St-Petersburg State University, 26 University pr., 198504, Saint-Petersburg, Russia
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Koszelewski D, Zysk M, Brodzka A, Żądło A, Paprocki D, Ostaszewski R. Evaluation of a new protocol for enzymatic dynamic kinetic resolution of 3-hydroxy-3-(aryl)propanoic acids. Org Biomol Chem 2015; 13:11014-20. [DOI: 10.1039/c5ob01380a] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The application of tandem metal–enzyme dynamic kinetic resolution (DKR) is a powerful tool for the manufacture of high-value chemical commodities.
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Affiliation(s)
| | - Małgorzata Zysk
- Institute of Organic Chemistry PAS Kasprzaka 44/52
- 01-224 Warsaw
- Poland
| | - Anna Brodzka
- Institute of Organic Chemistry PAS Kasprzaka 44/52
- 01-224 Warsaw
- Poland
| | - Anna Żądło
- Institute of Organic Chemistry PAS Kasprzaka 44/52
- 01-224 Warsaw
- Poland
| | - Daniel Paprocki
- Institute of Organic Chemistry PAS Kasprzaka 44/52
- 01-224 Warsaw
- Poland
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7
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Antos JM, McFarland JM, Iavarone AT, Francis MB. Chemoselective tryptophan labeling with rhodium carbenoids at mild pH. J Am Chem Soc 2009; 131:6301-8. [PMID: 19366262 DOI: 10.1021/ja900094h] [Citation(s) in RCA: 170] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Significant improvements have been made to a previously reported tryptophan modification method using rhodium carbenoids in aqueous solution, allowing the reaction to proceed at pH 6-7. This technique is based on the discovery that N-(tert-butyl)hydroxylamine promotes indole modification with rhodium carbenoids over a broad pH range (2-7). This methodology was demonstrated on peptide and protein substrates, generally yielding 40-60% conversion with excellent tryptophan chemoselectivity. The solvent accessibility of the indole side chains was found to be a key factor in successful carbenoid addition, as demonstrated by conducting the reaction at temperatures high enough to cause thermal denaturation of the protein substrate. Progress toward the expression of proteins bearing solvent accessible tryptophan residues as reactive handles for modification with rhodium carbenoids is also reported.
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Affiliation(s)
- John M Antos
- Department of Chemistry, University of California, Berkeley, California 94720-1460, USA
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8
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Felthouse TR. The Chemistry, Structure, and Metal-Metal Bonding in Compounds of Rhodium(II). ACTA ACUST UNITED AC 2007. [DOI: 10.1002/9780470166307.ch2] [Citation(s) in RCA: 61] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/07/2023]
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9
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Aoki K, Salam M. Interligand interactions affecting specific metal bonding to nucleic acid bases. A case of [Rh2(OAc)4], [Rh2(HNOCCF3)4], and [Rh2(OAc)2(HNOCCF3)2] toward purine nucleobases and nucleosides. Inorganica Chim Acta 2002. [DOI: 10.1016/s0020-1693(02)01042-3] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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10
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Katsaros N, Anagnostopoulou A. Rhodium and its compounds as potential agents in cancer treatment. Crit Rev Oncol Hematol 2002; 42:297-308. [PMID: 12050021 DOI: 10.1016/s1040-8428(01)00222-0] [Citation(s) in RCA: 121] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
Abstract
The antitumor activity of the inorganic complex cis-diammine-dichloroplatinum(II) (cisplatin) led to the development of other types of non-organic cytostatic drugs. Numerous platinum other platinum and non-platinum metal compounds were shown to be effective against animal model tumors as well as tumors in man. However, the introduction of novel transition metal agents in clinical treatment is exceptionally slow. So far, Ru(II) and Ru(III) complexes have shown very promising properties while the Ru(III) compound, [ImH][trans-Cl4(Me2SO)(Im)Ru(III)] (Im=imidazole, NAMI-A), is the first ruthenium compound that successfully entered phase I clinical trials. Rhodium belongs to the same group as platinum and ruthenium. However, rhodium compounds, analogues to the corresponding platinum and ruthenium compounds that possess significant antitumor properties, were found to be less effective as anticancer agents mainly due to their toxic effects. Dimeric mu-Acetato dimers of Rh(II) as well as monomeric square planar Rh(I) and octahedral Rh(III) complexes have shown interesting antitumor properties.
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Affiliation(s)
- N Katsaros
- National Centre of Scientific Research Demokritos, Institute of Physical Chemistry, Agia Paraskevi Attikis, Greece.
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11
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Das K, Kadish KM, Bear JL. Substituent and solvent effects on the electrochemical properties of tetra-.mu.-carboxylato-dirhodium(II). Inorg Chem 2002. [DOI: 10.1021/ic50182a027] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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12
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Aoki K, Salam M. Interligand interactions affecting specific metal bonding to nucleic acid bases: the tetrakis(μ-trifluoroacetamidato)dirhodium(II)–cytosine system. Crystal structures of [Rh2(CF3CONH)4(cytosine)] and [Rh2(CF3CONH)4(1-methylcytosine)2]·2H2O. Inorganica Chim Acta 2001. [DOI: 10.1016/s0020-1693(01)00376-0] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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13
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Puri JK, Vats VK, Miglani A. SYNTHESIS AND CHARACTERIZATION OF TITANIUM(IV), VANADIUM(III), CHROMIUM(III), AND MANGANESE(II) MONOBROMOACETATES AND THEIR COMPLEXES WITH ORGANIC BASES. ACTA ACUST UNITED AC 2001. [DOI: 10.1081/sim-100002233] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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14
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Asara JM, Hess JS, Lozada E, Dunbar KR, Allison J. Evidence for Binding of Dirhodium Bis-Acetate Units to Adjacent GG and AA Sites on Single-Stranded DNA. J Am Chem Soc 1999. [DOI: 10.1021/ja992800j] [Citation(s) in RCA: 72] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- John M. Asara
- Contribution from the Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, and The Cancer Center, Michigan State University, East Lansing, Michigan 48824
| | - Jennifer S. Hess
- Contribution from the Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, and The Cancer Center, Michigan State University, East Lansing, Michigan 48824
| | - Elizabeth Lozada
- Contribution from the Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, and The Cancer Center, Michigan State University, East Lansing, Michigan 48824
| | - Kim R. Dunbar
- Contribution from the Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, and The Cancer Center, Michigan State University, East Lansing, Michigan 48824
| | - John Allison
- Contribution from the Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, and The Cancer Center, Michigan State University, East Lansing, Michigan 48824
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15
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Clarke MJ, Zhu F, Frasca DR. Non-platinum chemotherapeutic metallopharmaceuticals. Chem Rev 1999; 99:2511-34. [PMID: 11749489 DOI: 10.1021/cr9804238] [Citation(s) in RCA: 778] [Impact Index Per Article: 31.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- M J Clarke
- Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467
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Koutsodimou A, Katsaros N. REACTIONS OF THE RHODIUM TRIFLUOROACETATE DIMER WITH NUCLEOSIDES AND NUCLEOTIDES. J COORD CHEM 1996. [DOI: 10.1080/00958979608024327] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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17
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Abstract
The interaction of Rh2(OAc)4 with human serum albumin (HSA) has been studied by absorption difference spectroscopy, CD spectroscopy, and quantitative precipitating HSA-antibody test. Our results demonstrate that this rhodium complex reacts easily with HSA at several ratios of reagents. The Rh atoms are coordinated to protein molecules via the imidazole rings of His residues. The structural studies have shown the conformational change of HSA modified by rhodium. Rhodium binding lowers the helicity of the native protein between 8 to 18% depending upon the molar ratios (from 1:1 to 10:1). Denaturation measurements of free HSA and HSA in the presence of dirhodium(II) acetate complex with 8-M urea followed by CD spectroscopy, suggest that rhodium affects the secondary protein structure and might stabilize HSA against denaturing agents. 8-M urea caused the unfolding of the native HSA secondary structure by about 40% and the structure of Rh(OAc)4-HSA by about 10%. The modification of native HSA by rhodium causes its decreased ability to precipitate with HSA antibodies. The decrease of antigenic properties can be connected with the unfolding of the antigen structure, which brings about perturbation of complementarity of the antigen-antibody reactive sites.
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Affiliation(s)
- L Trynda
- Institute of Chemistry, University of Wrocław, Poland
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18
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García-Granda S, Lahuerta P, Latorre J, Martinez M, Peris E, Sanaú M, Ubeda MA. Exchange reactions of acetate ligands and electrophilic rhodium–carbon bond activation in orthometallated rhodium(II) compounds with trifluoroacetic acid. Crystal structure of [Rh2(O2CCF3)3{(C6H4)PPh2]·2CF3CO2H. ACTA ACUST UNITED AC 1994. [DOI: 10.1039/dt9940000539] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Zoroddu MA, Manca G, Mosca S. Metal complexes of phytohormones. Part IV. Interactions of tetrakis-?-acetato dirhodium(II) with 6-furfurilaminopurine, 6-benzylaminopurine, 6-furfurilaminopurine riboside and 6-benzylaminopurine riboside. TRANSIT METAL CHEM 1991. [DOI: 10.1007/bf01024067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Puri J, Miglani A, Malhotra M, Sharma V. Physicochemical studies of the solvolysed products from various Lewis acids in tribromoacetic acid as solvent. Inorganica Chim Acta 1990. [DOI: 10.1016/s0020-1693(00)80415-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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21
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Faraglia G, Graziani R, Volponi L, Casellato U. Dirhodium(II,II) tetra-acetate complexes with sulphur donors. The crystal structure of [Rh2(O2CMe)4(L)2] (L = N, N-dimethylthioformamide or N, N-dimethyl O-ethylthiocarbamate). Inorganica Chim Acta 1988. [DOI: 10.1016/s0020-1693(00)87496-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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22
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Chibber R, Stratford IJ, O'Neill P, Sheldon PW, Ahmed I, Lee B. The interaction between radiation and complexes of cis-Pt(II) and Rh(II): studies at the molecular and cellular level. INTERNATIONAL JOURNAL OF RADIATION BIOLOGY AND RELATED STUDIES IN PHYSICS, CHEMISTRY, AND MEDICINE 1985; 48:513-24. [PMID: 3876304 DOI: 10.1080/09553008514551581] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
A range of Rh(II) carboxylates and cis-Pt(II) complexes have been examined for their ability to increase the radiation sensitivity of aerobic and hypoxic V79 cells in vitro. The transition metal complexes sensitize in both air and nitrogen, with the greater effect generally occurring in nitrogen. The cis-Pt(II) complexes only show small levels of sensitization with dose modification factors (DMFs) of no more than 1.2. In contrast, the Rh(II) complexes can give DMFs of 2.0. Radiation chemical experiments show the transition metal complexes to have substantially lower redox potentials than metronidazole and, in addition, neither type of complex undergoes electron transfer reaction or adduct formation on interaction with radicals derived from DNA bases. Thus, the inorganic complexes do not operate by mechanisms similar to those occurring with electron affinic or stable free radical sensitizers. The increase in radiation sensitivity for cells treated with the Rh(II) carboxylates, but not the cis-Pt(II) complexes, is attributed to the ability of the Rh compounds to deplete intracellular thiols. Further, the efficiency of sensitization by the Rh(II) complexes and their ability to interact with cellular thiols depends upon the nature of the carboxylate ligand and follows the order butyrate greater than propionate greater than acetate greater than methoxyacetate. The differences between the carboxylates may be due to differences in drug uptake. A combination of the Rh(II) complexes with misonidazole given to hypoxic cells irradiated in vitro gives an additive response. However, it was not possible to demonstrate a similar effect in tumours in mice given the combination of Rh(II) methoxyacetate and the misonidazole analogue RSU 1070.
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23
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Solvolytic reactions of Lewis acids in dibromoacetic acid and the characterization of the solvolysed products. Inorganica Chim Acta 1985. [DOI: 10.1016/s0020-1693(00)85999-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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24
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Solvolytic reactions of Lewis acids in monobromoacetic acid and the nature of the solvolysed products. Inorganica Chim Acta 1985. [DOI: 10.1016/s0020-1693(00)86586-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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26
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The reactivity of tetra-μ-acetatodirhodium(II) with selected di- and tripeptides, substituted pyridines and imidazole ligands. Inorganica Chim Acta 1982. [DOI: 10.1016/s0020-1693(00)85766-7] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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28
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29
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Dennis A, Howard R, Kadish K, Bear J, Brace J, Winograd N. X-ray photoelectron spectra of some dirhodium carboxylate complexes. Inorganica Chim Acta 1980. [DOI: 10.1016/s0020-1693(00)90981-2] [Citation(s) in RCA: 29] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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30
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Pneumatikakis G, Psaroulis P. Interactions of tetra-μ-acetato dirhodium(II) with sulfur-containing aminoacids. Inorganica Chim Acta 1980. [DOI: 10.1016/s0020-1693(00)84175-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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31
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Yu BS, Kim BK. On the reaction of nucleic acid derivatives with rhodium(II) (isobutyrate)4L2. Arch Pharm Res 1978. [DOI: 10.1007/bf02856298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Catterick J, Thornton P. Structures and Physical Properties of Polynuclear Carboxylates. ADVANCES IN INORGANIC CHEMISTRY AND RADIOCHEMISTRY 1977. [DOI: 10.1016/s0065-2792(08)60041-2] [Citation(s) in RCA: 230] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
|
34
|
The thermal decomposition of the dimethyl sulfoxide and pyridine adducts of rhodium(II) acetate, propionate and butyrate. ACTA ACUST UNITED AC 1976. [DOI: 10.1016/0022-1902(76)80019-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
35
|
|
36
|
Mikeš F, Schurig V, Gil-Av E. Complex-forming stationary phases in high-speed liquid chromatography. J Chromatogr A 1973. [DOI: 10.1016/s0021-9673(00)97030-4] [Citation(s) in RCA: 50] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
37
|
Schurig V, Bear JL, Zlatkis A. Rhodium (II) carboxylates as new selective stationary phases in gas-liquid chromatography. Chromatographia 1972. [DOI: 10.1007/bf02310747] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
38
|
Bear JL, Kitchens J, Willcott M. A kinetic study of the reaction of rhodium(II) acetate with trifluoroacetic acid. ACTA ACUST UNITED AC 1971. [DOI: 10.1016/0022-1902(71)80670-x] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
39
|
Paul RC, Singh P, Makhni H, Chadha S. Addition compounds of copper(II) and cobalt(II) monochloroacetates with some oxygen donor ligands. ACTA ACUST UNITED AC 1970. [DOI: 10.1016/0022-1902(70)80184-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
40
|
|
41
|
Kitchens J, Bear JL. The thermal decomposition of dimethylsulfoxide and diethylsulfide adducts of rhodium(II) acetate. ACTA ACUST UNITED AC 1970. [DOI: 10.1016/0022-1902(70)80448-1] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|