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Spedalotto G, Gericke R, Lovisari M, Farquhar ER, Twamley B, McDonald AR. Preparation and Characterisation of a Bis-μ-Hydroxo-Ni III 2 Complex. Chemistry 2019; 25:11983-11990. [PMID: 31237966 DOI: 10.1002/chem.201902812] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Indexed: 12/20/2022]
Abstract
Hydroxide-bridged high-valent oxidants have been implicated as the active oxidants in methane monooxygenases and other oxidases that employ bimetallic clusters in their active site. To understand the properties of such species, bis-μ-hydroxo-NiII 2 complex (1) supported by a new dicarboxamidate ligand (N,N'-bis(2,6-dimethyl-phenyl)-2,2-dimethylmalonamide) was prepared. Complex 1 contained a diamond core made up of two NiII ions and two bridging hydroxide ligands. Titration of the 1 e- oxidant (NH4 )2 [CeIV (NO3 )6 ] with 1 at -45 °C showed the formation of the high-valent species 2 and 3, containing NiII NiIII and NiIII 2 diamond cores, respectively, maintaining the bis-μ-hydroxide core. Both complexes were characterised using electron paramagnetic resonance, X-ray absorption, and electronic absorption spectroscopies. Density functional theory computations supported the spectroscopic assignments. Oxidation reactivity studies showed that bis-μ-hydroxide-NiIII 2 3 was capable of oxidizing substrates at -45 °C at rates greater than that of the most reactive bis-μ-oxo-NiIII complexes reported to date.
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Affiliation(s)
- Giuseppe Spedalotto
- School of Chemistry, Trinity College Dublin, The University of Dublin, College Green, Dublin 2, Ireland
| | - Robert Gericke
- School of Chemistry, Trinity College Dublin, The University of Dublin, College Green, Dublin 2, Ireland
| | - Marta Lovisari
- School of Chemistry, Trinity College Dublin, The University of Dublin, College Green, Dublin 2, Ireland
| | - Erik R Farquhar
- Center for Synchrotron Biosciences, National Synchrotron Light Source II, Brookhaven, National Laboratory, Case Western Reserve University, Upton, NY, 11973, USA
| | - Brendan Twamley
- School of Chemistry, Trinity College Dublin, The University of Dublin, College Green, Dublin 2, Ireland
| | - Aidan R McDonald
- School of Chemistry, Trinity College Dublin, The University of Dublin, College Green, Dublin 2, Ireland
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2
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Garro HA, Reta GF, Donadel OJ, Pungitore CR. Cytotoxic and Antitumor Activity of some Coumarin Derivatives. Nat Prod Commun 2016. [DOI: 10.1177/1934578x1601100926] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Several natural and synthetic coumarins were assayed against different cancer cell lines. Four of them have shown cytotoxicity against a panel of three human solid tumor cell lines (HeLa, T-47D, and WiDr) and a clearly activity/hydrophobicity relationship. Compound 13 proved to be the most active product in all cell lines tested, with values of 8.0 (±0.38) μM against HeLa cells and also able to inhibit Taq DNA polymerase. This dual activity of 13 makes it a candidate to be considered as a “lead” compound in the search for novel antitumor drugs.
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Affiliation(s)
- Hugo A. Garro
- Área de Química Orgánica, INTEQUI-CONICET-UNSL, 5700 San Luis, Argentina
| | - Guillermo F. Reta
- Área de Química Orgánica, INTEQUI-CONICET-UNSL, 5700 San Luis, Argentina
| | - Osvaldo J. Donadel
- Área de Química Orgánica, INTEQUI-CONICET-UNSL, 5700 San Luis, Argentina
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Ascherl L, Evangelisti C, Klapötke TM, Krumm B, Nafe J, Nieder A, Rest S, Schütz C, Suceska M, Trunk M. Chemistry and Structures of Hexakis(halogenomethyl)-, Hexakis(azidomethyl)-, and Hexakis(nitratomethyl)disiloxanes. Chemistry 2013; 19:9198-210. [DOI: 10.1002/chem.201300226] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2013] [Indexed: 11/11/2022]
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5
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Zablotskaya A, Segal I, Popelis Y, Grinberga S, Shestakova I, Nikolajeva V, Eze D. Silyl modification of biologically active compounds. 13. Synthesis, cytotoxicity and antibacterial action ofN-methyl-N-(2-triorganylsiloxyethyl)-1,2,3,4-tetrahydro(iso)quinolinium iodides. Appl Organomet Chem 2012. [DOI: 10.1002/aoc.2952] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
| | - Izolda Segal
- Latvian Institute of Organic Synthesis; Riga; LV-1006; Latvia
| | - Yuris Popelis
- Latvian Institute of Organic Synthesis; Riga; LV-1006; Latvia
| | | | | | | | - Daina Eze
- Biological Faculty; University of Latvia; Riga; LV-1586; Latvia
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6
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Gessner VH, Strohmann C. Preparation of aminomethyl functionalised silanes via an α-lithiated amine: from their synthesis, stability and crystal structures to stereochemical issues. Dalton Trans 2012; 41:3452-60. [PMID: 22307174 DOI: 10.1039/c2dt12163h] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The preparation of aminomethyl functionalised silanes based on the α-lithiated amine, (1R,2R)-N,N,N',N'-tetramethylcyclohexane-1,2-diamine [(R,R)-TMCDA] is reported. This methodology can be applied for the synthesis of mono-aminomethyl substituted systems, but most remarkably also for di- and trifunctionalised compounds. The trapping of the lithiated amine is accompanied by transmetallation reactions resulting in the formation of (silylmethyl)silanes depending on the reaction temperature. The zinc(II) halide complexes of the mono-functionalised systems show the formation of exclusively one configuration of the stereogenic nitrogen atom, in which the spatially more demanding substituent exhibits the pseudo-equatorial position. The di- and trifunctionalised systems feature high sensitivity towards Si-C bond cleavage under re-formation of the (R,R)-TMCDA fragment.
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Affiliation(s)
- Viktoria H Gessner
- Anorganische Chemie, Technische Universität Dortmund, Otto-Hahn-Straße 6, 44263 Dortmund, Germany
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7
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Klapötke TM, Krumm B, Nieder A, Richter O, Troegel D, Tacke R. Silicon-Containing Explosives: Syntheses and Sensitivity Studies of (Azidomethyl)-, Bis(azidomethyl)-, and Tris(azidomethyl)silanes. Z Anorg Allg Chem 2012. [DOI: 10.1002/zaac.201100549] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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8
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New substituted C-19-andrographolide analogues with potent cytotoxic activities. Bioorg Med Chem Lett 2012; 22:49-52. [DOI: 10.1016/j.bmcl.2011.11.085] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2011] [Revised: 10/28/2011] [Accepted: 11/21/2011] [Indexed: 11/22/2022]
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9
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Lazareva NF. N-(silylmethyl)amines, -amides, and -amino acids: biological activity and prospects in drug synthesis. Russ Chem Bull 2011. [DOI: 10.1007/s11172-011-0097-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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10
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Pungitore CR, García C, Martín VS, Tonn CE, Ardanaz CE. Mass spectrometry studies of iridoid aglycone derivatives. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2011; 25:2099-2105. [PMID: 21698694 DOI: 10.1002/rcm.5079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
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11
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Troegel D, Peter Lippert W, Möller F, Burschka C, Tacke R. New C-functionalized silacycloalkanes (CH2)nSi(CH2X)2 and (CH2)nSi(CH2X)CH2X′ (n = 3, 4; X, X′ = functional group): Synthesis and reactivity studies of analogous silacyclobutanes and silacyclopentanes. J Organomet Chem 2010. [DOI: 10.1016/j.jorganchem.2010.03.024] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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12
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Evangelisti C, Klapötke TM, Krumm B, Nieder A, Berger RJF, Hayes SA, Mitzel NW, Troegel D, Tacke R. Sila-Substitution of Alkyl Nitrates: Synthesis, Structural Characterization, and Sensitivity Studies of Highly Explosive (Nitratomethyl)-, Bis(nitratomethyl)-, and Tris(nitratomethyl)silanes and Their Corresponding Carbon Analogues. Inorg Chem 2010; 49:4865-80. [DOI: 10.1021/ic902387y] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Camilla Evangelisti
- Department of Chemistry, Ludwig Maximilians University of München, Butenandtstrasse 5−13 (D), D-81377 München, Germany
| | - Thomas M. Klapötke
- Department of Chemistry, Ludwig Maximilians University of München, Butenandtstrasse 5−13 (D), D-81377 München, Germany
| | - Burkhard Krumm
- Department of Chemistry, Ludwig Maximilians University of München, Butenandtstrasse 5−13 (D), D-81377 München, Germany
| | - Anian Nieder
- Department of Chemistry, Ludwig Maximilians University of München, Butenandtstrasse 5−13 (D), D-81377 München, Germany
| | - Raphael J. F. Berger
- Faculty of Chemistry, University of Bielefeld, Universitätsstrasse 25, D-33615 Bielefeld, Germany
| | - Stuart A. Hayes
- Faculty of Chemistry, University of Bielefeld, Universitätsstrasse 25, D-33615 Bielefeld, Germany
| | - Norbert W. Mitzel
- Faculty of Chemistry, University of Bielefeld, Universitätsstrasse 25, D-33615 Bielefeld, Germany
| | - Dennis Troegel
- Institute of Inorganic Chemistry, University of Würzburg, Am Hubland, D-97074 Würzburg, Germany
| | - Reinhold Tacke
- Institute of Inorganic Chemistry, University of Würzburg, Am Hubland, D-97074 Würzburg, Germany
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13
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Troegel D, Möller F, Burschka C, Tacke R. Synthesis and Characterization of New Trifunctional Tetraorganylsilanes of the Formula Types MeSi(CH2X)3, MeSi(CH2X)2CH2X′, and MeSi(CH2X)(CH2X′)CH2X′′. Organometallics 2009. [DOI: 10.1021/om9005577] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Dennis Troegel
- Institut für Anorganische Chemie, Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany
| | - Frank Möller
- Institut für Anorganische Chemie, Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany
| | - Christian Burschka
- Institut für Anorganische Chemie, Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany
| | - Reinhold Tacke
- Institut für Anorganische Chemie, Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany
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Rim C, Zhang H, Son DY. Silyl-Substituted Thioether Ligands and Their Ag(I) Complexes. Inorg Chem 2008; 47:11993-2003. [DOI: 10.1021/ic801580t] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Chinwon Rim
- Department of Chemistry, P.O. Box 750314, Southern Methodist University, Dallas, Texas 75275-0314
| | - Hongming Zhang
- Department of Chemistry, P.O. Box 750314, Southern Methodist University, Dallas, Texas 75275-0314
| | - David Y. Son
- Department of Chemistry, P.O. Box 750314, Southern Methodist University, Dallas, Texas 75275-0314
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15
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León LG, Miranda PO, Martín VS, Padrón JI, Padrón JM. Antiproliferative activity of 4-chloro-5,6-dihydro-2H-pyrans. Part 2: Enhancement of drug cytotoxicity. Bioorg Med Chem Lett 2007; 17:3087-90. [PMID: 17398091 DOI: 10.1016/j.bmcl.2007.03.045] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2007] [Revised: 03/12/2007] [Accepted: 03/14/2007] [Indexed: 11/17/2022]
Abstract
The Prins reaction was the basis to synthesize functionalized alkyl chlorodihydropyran derivatives. The inexpensive, stable, and environmentally friendly FeCl(3) promotes the cyclization. The method represents an efficient and regioselective manner to obtain in a single step chlorovinyl-TMS oxacycles. The in vitro antiproliferative activities of the compounds were examined in the human solid tumor cell lines A2780 (ovarian cancer), SW1573 (non-small cell lung cancer), and WiDr (colon cancer). Overall, the results show an enhancement in the cytotoxicity exhibited by the new analogs when compared to their parental compounds.
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Affiliation(s)
- Leticia G León
- Instituto Universitario de Bio-Orgánica Antonio González, Universidad de La Laguna, C/ Astrofísico Francisco Sánchez 2, 38206 La Laguna, Spain
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16
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Pungitore CR, León LG, García C, Martín VS, Tonn CE, Padrón JM. Novel antiproliferative analogs of the Taq DNA polymerase inhibitor catalpol. Bioorg Med Chem Lett 2006; 17:1332-5. [PMID: 17178223 DOI: 10.1016/j.bmcl.2006.11.086] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2006] [Revised: 11/28/2006] [Accepted: 11/30/2006] [Indexed: 11/20/2022]
Abstract
The naturally occurring iridoid catalpol (1) is a Taq DNA polymerase inhibitor. However, its poor lipophilicity might account for the lack of biological activity against human solid tumor cell lines. The traditional prodrug approach by means of peracetylation of the free hydroxyl groups led to a compound, which showed a marginal growth inhibition against the most sensitive cell line A2780 (ovarian cancer). However, the formation of analogs bearing one to three silyl ether groups led to antiproliferative compounds against a panel of six human solid tumor cell lines, with GI50 values in the range 1.8-4.8 microM. Cell cycle studies revealed arrest in G0/G1 phase that is consistent with DNA polymerase inhibition.
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Affiliation(s)
- Carlos R Pungitore
- Instituto Universitario de Bio-Orgánica Antonio González, Universidad de La Laguna, C/Astrofísico Francisco Sánchez 2, 38206 La Laguna, Spain
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17
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Pinacho Crisóstomo FR, Padrón JM, Martín T, Villar J, Martín VS. A Short and Efficient Enantiomeric Synthesis of Antitumor Fused Tetrahydrofurans. European J Org Chem 2006. [DOI: 10.1002/ejoc.200500842] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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18
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Zablotskaya A, Segal I, Popelis Y, Lukevics E, Baluja S, Shestakova I, Domracheva I. Silyl modification of biologically active compounds. 12. Silyl group as true incentive to antitumour and antibacterial action of choline and colamine analogues. Appl Organomet Chem 2006. [DOI: 10.1002/aoc.1133] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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19
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Donadel OJ, Martín T, Martín VS, Villar J, Padrón JM. The tert-butyl dimethyl silyl group as an enhancer of drug cytotoxicity against human tumor cells. Bioorg Med Chem Lett 2005; 15:3536-9. [PMID: 15990300 DOI: 10.1016/j.bmcl.2005.05.126] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2005] [Revised: 05/16/2005] [Accepted: 05/18/2005] [Indexed: 11/26/2022]
Abstract
In this study, we synthesized a series of enantiomerically pure (2R,3S)-disubstituted tetrahydropyranes with diverse functional groups using known methodologies. In addition to the tert-butyl dimethyl silyl group, other common protecting groups for hydroxyl groups such as allyl, acetate, and benzoate were used to obtain appropriate derivatives. Pure compounds were evaluated in vitro against HL60 human leukemia cells and MCF7 human breast cancer cells. From the growth inhibition data a structure-activity relationship was obtained. Overall the results point to the relevant role of the tert-butyl dimethyl silyl group in the modulation of cytotoxic activity.
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Affiliation(s)
- Osvaldo J Donadel
- Instituto Universitario de Bio-Orgánica Antonio González, Universidad de La Laguna, C/ Astrofísico Francisco Sánchez 2, 38206 La Laguna, Spain
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Lee KH, Huang BR, Tzeng CC. Synthesis and anticancer evaluation of certain alpha-methylene-gamma-(4-substituted phenyl)-gamma-butyrolactone bearing thymine, uracil, and 5-bromouracil. Bioorg Med Chem Lett 1999; 9:241-4. [PMID: 10021937 DOI: 10.1016/s0960-894x(98)00727-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Certain alpha-methylene-gamma-(4-substituted phenyl)-gamma-butyrolactone bearing thymine, uracil, and 5-bromouracil were synthesized and evaluated for their anticancer activity. These compounds demonstrated a strong growth inhibitory activity against leukemia cell lines. The anticancer potency for the substituents of the lactone C(gamma)-phenyl is in an order of 4-Ph > 4-Cl, 4-Br > 4-Me, 4-NO2 > 4-F. For the pyrimidine portion, 5-bromouracil is more potent than uracil and thymine.
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Affiliation(s)
- K H Lee
- School of Chemistry, Kaohsiung Medical College, Taiwan, R.O.C
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Wang TC, Lee KH, Chen YL, Liou SS, Tzeng CC. Synthesis and anticancer evaluation of certain gamma-aryloxymethyl-alpha-methylene-gamma-phenyl-gamma-butyrolactones. Bioorg Med Chem Lett 1998; 8:2773-6. [PMID: 9873620 DOI: 10.1016/s0960-894x(98)00487-9] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Certain gamma-aryloxymethyl-alpha-methylene-gamma-phenyl- gamma-butyrolactones were synthesized and evaluated for their anticancer activity. These compounds demonstrated a strong growth inhibitory activity against leukemia cell lines but are relatively inactive against non-small cell lung cancers and CNS cancers. The anticancer potency for aryl portion is in an order of quinoline > 8-hydroxyquinoline > 2-methylquinoline >> naphthalene >> benzene.
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Affiliation(s)
- T C Wang
- School of Chemistry, Kaohsiung Medical College, Taiwan, R.O.C
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Wang P, Lee HK. Recent applications of high-performance liquid chromatography to the analysis of metal complexes. J Chromatogr A 1997; 789:437-51. [PMID: 9440293 DOI: 10.1016/s0021-9673(97)00839-x] [Citation(s) in RCA: 56] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Interest in metal complexes in modern inorganic chemistry has resulted in increasing demands for the analysis of these compounds. This paper reviews the most recent applications of high-performance liquid chromatography (HPLC) to the analysis of metal complexes. The review centres on the use of the technique in metal complex syntheses, reactions, characterizations and complexations and retention behaviour of these compounds, as reported in the literature since 1994.
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Affiliation(s)
- P Wang
- Department of Chemistry, National University of Singapore, Kent Ridge, Singapore
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