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Pinkas J, Gyepes R, Kubišta J, Horáček M, Lamač M. Group 4 metallocene complexes with pendant nitrile groups. J Organomet Chem 2011. [DOI: 10.1016/j.jorganchem.2011.02.032] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Li JL, Gao ZW, Sun P, Gao LX, Tikkanen W. Ethanol catalyzed synthesis of titanocene aryl carboxylate complexes and crystal structure of (η5-C5H5)2Ti(2-OH-5-S–O2CC6H3)2. Inorganica Chim Acta 2011. [DOI: 10.1016/j.ica.2010.12.037] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Tian LJ, Ma ZH, Han ZG, Zheng XZ, Lin J. Synthesis and crystal structures of cyclopentadienyl dimolybdenum carbonyl complexes. TRANSIT METAL CHEM 2010. [DOI: 10.1007/s11243-010-9447-x] [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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Hogan M, Cotter J, Claffey J, Gleeson B, Wallis D, O'Shea D, Tacke M. Synthesis and Cytotoxicity Studies of New (Dimethylamino)-Functionalised and 7-Azaindole-Substituted ‘Titanocene’ Anticancer Agents (7-Azaindole=1H-Pyrrolo[2,3-b]pyridine). Helv Chim Acta 2008. [DOI: 10.1002/hlca.200890191] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Nie W, Liao L, Xu W, Borzov MV, Krut’ko DP, Churakov AV, Howard JA, Lemenovskii DA. 1-Methylimidazolin-2-yl functionalized cyclopentadienyl complexes of titanium and zirconium. Crystal structure of {[η5:η1-κN-C5H4CPh2CH2-(1-Me–C3H4N2)]ZrCl2}2(μ-Cl)2. J Organomet Chem 2008. [DOI: 10.1016/j.jorganchem.2008.04.015] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Gurubasavaraj PM, Roesky HW, Nekoueishahraki B, Pal A, Herbst-Irmer R. From Unstable to Stable: Half-Metallocene Catalysts for Olefin Polymerization. Inorg Chem 2008; 47:5324-31. [DOI: 10.1021/ic800198e] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
| | - Herbert W. Roesky
- Institute of Inorganic Chemistry, University of Göttingen, Tammannstrasse 4, 37077 Göttingen, Germany
| | - Bijan Nekoueishahraki
- Institute of Inorganic Chemistry, University of Göttingen, Tammannstrasse 4, 37077 Göttingen, Germany
| | - Aritra Pal
- Institute of Inorganic Chemistry, University of Göttingen, Tammannstrasse 4, 37077 Göttingen, Germany
| | - Regine Herbst-Irmer
- Institute of Inorganic Chemistry, University of Göttingen, Tammannstrasse 4, 37077 Göttingen, Germany
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Pampillón C, Claffey J, Strohfeldt K, Tacke M. Synthesis and cytotoxicity studies of new dimethylamino-functionalised and aryl-substituted titanocene anti-cancer agents. Eur J Med Chem 2008; 43:122-8. [PMID: 17412456 DOI: 10.1016/j.ejmech.2007.02.011] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2006] [Revised: 02/01/2007] [Accepted: 02/15/2007] [Indexed: 10/23/2022]
Abstract
From the carbolithiation of 6-N,N-dimethylamino fulvene (3a) and different lithiated aryl species [p-N,N-dimethylanilinyl lithium, p-anisyl lithium and 4-lithio-benzo[1.3]dioxole (2a-c)], the corresponding lithium cyclopentadienide intermediates 4a-c were formed. These three lithiated intermediates underwent a transmetallation reaction with TiCl4 resulting in dimethylamino-functionalised and aryl-substituted titanocenes 5a-c. When these titanocenes were tested against LLC-PK cells, the IC50 values obtained were of 54, 45 and 26microM for titanocenes 5a, b and c, respectively. The most cytotoxic titanocene in this paper, 5c is approximately 10 times less cytotoxic than cis-platin, which showed an IC50 value of 3.3microM, when tested on the LLC-PK cell line, but approximately 100 times better than titanocene dichloride.
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Affiliation(s)
- Clara Pampillón
- Conway Institute of Biomolecular and Biomedical Research, The UCD School of Chemistry and Chemical Biology, Centre for Synthesis and Chemical Biology (CSCB), University College Dublin, Belfield, Dublin 4, Ireland
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Erker G, Kehr G, Fröhlich R. Functionalized Alkali Metal Cyclopentadienides: Structural and Chemical Features. Organometallics 2007. [DOI: 10.1021/om7007666] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Gerhard Erker
- Organisch-Chemisches Institut der Universität Münster, Corrensstrasse 40, 48149 Münster, Germany
| | - Gerald Kehr
- Organisch-Chemisches Institut der Universität Münster, Corrensstrasse 40, 48149 Münster, Germany
| | - Roland Fröhlich
- Organisch-Chemisches Institut der Universität Münster, Corrensstrasse 40, 48149 Münster, Germany
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Chen L, Kehr G, Fröhlich R, Erker G. Functional Group Chemistry at the Zirconocene Backbone: Addition Reactions to Pendant Alkynyl Substituents. Eur J Inorg Chem 2007. [DOI: 10.1002/ejic.200700749] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Liyi Chen
- Organisch‐Chemisches Institut der Universität Münster, Corrensstrasse 40, 48149 Münster, Germany, Fax: +49‐251‐83‐36503
| | - Gerald Kehr
- Organisch‐Chemisches Institut der Universität Münster, Corrensstrasse 40, 48149 Münster, Germany, Fax: +49‐251‐83‐36503
| | - Roland Fröhlich
- Organisch‐Chemisches Institut der Universität Münster, Corrensstrasse 40, 48149 Münster, Germany, Fax: +49‐251‐83‐36503
| | - Gerhard Erker
- Organisch‐Chemisches Institut der Universität Münster, Corrensstrasse 40, 48149 Münster, Germany, Fax: +49‐251‐83‐36503
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Pampillón C, Claffey J, Hogan M, Tacke M. Morpholino-Functionalized and Heteroaryl-Substituted Titanocene Anti-Cancer Drugs: Synthesis and Cytotoxicity Studies. Z Anorg Allg Chem 2007. [DOI: 10.1002/zaac.200700212] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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11
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Hickey T, Claffey J, Fitzpatrick E, Hogan M, Pampillón C, Tacke M. Dimethylamino-functionalised and N-heteroaryl-substituted titanocene anticancer drugs: synthesis and cytotoxicity studies. Invest New Drugs 2007; 25:425-33. [PMID: 17516024 DOI: 10.1007/s10637-007-9061-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2007] [Accepted: 04/25/2007] [Indexed: 11/26/2022]
Abstract
From the carbolithiation of 6-N,N-dimethylamino fulvene (3a) and different lithiated N-heterocyclic compounds (N,N-dimethylaminomethylpyrrole, 1-methylimidazole and 2,4-[bis(N',N'-dimethylaminomethyl)]-N-methyl pyrrole), the corresponding lithium cyclopentadienide intermediate (4a-c) was formed. These three lithiated intermediates underwent a transmetallation reaction with TiCl4 resulting in dimethylamino-functionalised titanocenes 5a-c. When these titanocenes were tested against LLC-PK cells, the IC50 values obtained were of 13, and 63 microM for titanocenes 5b and 5c, respectively. The most cytotoxic titanocene in this paper (5a) with an IC50 value of 6.8 microM is found to be almost as cytotoxic as cis-platin, which showed an IC50 value of 3.3 microM, when tested on the epithelial pig kidney LLC-PK cell line, and titanocene 5c is approximately 400 times better than titanocene dichloride itself.
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Affiliation(s)
- Thomas Hickey
- Conway Institute of Biomolecular and Biomedical Research, The UCD School of Chemistry and Chemical Biology, Centre for Synthesis and Chemical Biology (CSCB), University College Dublin, Belfield, Dublin 4, Ireland
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12
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Synthesis and cytotoxicity studies of new dimethylamino-functionalised and heteroaryl-substituted titanocene anti-cancer drugs. J Organomet Chem 2007. [DOI: 10.1016/j.jorganchem.2007.01.045] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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13
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Pampillón C, Claffey J, Hogan M, Strohfeldt K, Tacke M. Synthesis and cytotoxicity studies of new dimethylamino-functionalised and indolyl-substituted titanocene anti-cancer drugs. TRANSIT METAL CHEM 2007. [DOI: 10.1007/s11243-006-0183-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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14
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Hogan M, Claffey J, Pampillón C, Watson RWG, Tacke M. Synthesis and Cytotoxicity Studies of New Dimethylamino-Functionalized and Azole-Substituted Titanocene Anticancer Drugs. Organometallics 2007. [DOI: 10.1021/om070088q] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Megan Hogan
- Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Belfield, Dublin 4, Ireland
| | - James Claffey
- Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Belfield, Dublin 4, Ireland
| | - Clara Pampillón
- Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Belfield, Dublin 4, Ireland
| | - R. William G. Watson
- Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Belfield, Dublin 4, Ireland
| | - Matthias Tacke
- Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Belfield, Dublin 4, Ireland
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Krut’ko DP, Borzov MV, Liao LY, Nie WL, Churakov AV, Howard JAK, Lemenovskii DA. 1-Methylimidazol-2-yl-functionalized cyclopentadienyl titanium and zirconium complexes. Crystal structure of [η 5:η1-C5H4CPh2CH2-(1-MeC3H2N2)]TiCl3. Russ Chem Bull 2006. [DOI: 10.1007/s11172-006-0456-z] [Citation(s) in RCA: 1] [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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Syntheses and reactions of fulvene-derived substituted aminoalkyl-Cp and phosphinoalkyl-Cp-Group 4 metal complexes. Coord Chem Rev 2006. [DOI: 10.1016/j.ccr.2005.10.008] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Erker G, Kehr G, Fröhlich R. Group 4 bent metallocenes and functional groups—Finding convenient pathways in a difficult terrain. Coord Chem Rev 2006. [DOI: 10.1016/j.ccr.2005.04.006] [Citation(s) in RCA: 63] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Bis(enamino-Cp) Group 4 metal complex chemistry: developing a Mannich-type carbon–carbon coupling reaction at the bent metallocene famework. J Organomet Chem 2005. [DOI: 10.1016/j.jorganchem.2004.08.021] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Edelmann FT. Synthesis and characterization of deuterium-labelled (fulvene)M(CO)3 complexes (M=Cr, Mo). Inorganica Chim Acta 2004. [DOI: 10.1016/j.ica.2004.06.038] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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