Heteroaryl substituted titanocenes as potential anti-cancer drugsSweeney, N., Gallagher, W.M., Muller-Bunz, H., Pampillon, C., Strohfeldt, K. and Tacke, M. (2006) Heteroaryl substituted titanocenes as potential anti-cancer drugs. Journal of Inorganic Biochemistry, 100 (9). pp. 1479-1486. ISSN 0162-0134 Full text not archived in this repository. It is advisable to refer to the publisher's version if you intend to cite from this work. See Guidance on citing. To link to this item DOI: 10.1016/j.jinorgbio.2006.04.006 Abstract/SummaryFrom the reaction of Super Hydride (LiBEt3H) with 6-(furyl)fulvene (1a), 6-(thiophenyl)fulvene (1b) or 6-(N-methyl-pyrrole)fulvene (1c) the corresponding lithium cyclopentadienide intermediates (2a-c) were obtained. These intermediates were reacted with titanium tetrachloride and bis-[(furyl-2-cyclopentadienylmethane)] titanium(IV) dichloride (3a) and bis-[(thiophenyl-2-cyclopentadienylmethane)] titanium(IV) dichloride (3b) and bis-[(N-methylpyrrole-2-cyclopentadienylmethane)] titanium(IV) dichloride (3c) were obtained and subsequently characterised by X-ray crystallography. When titanocenes 3a-c were tested against pig kidney (LLC-PK) cells inhibitory concentrations (IC50) of 1.6 x 10(-4) M, 1.5 x 10(-4) M and 9.1 x 10(-5) M, respectively, were observed. These values represent improved cytotoxicity against LLC-PK, when compared to their corresponding ansa substituted analogues and also in comparison to unsubstituted titanocene dichloride. (c) 2006 Elsevier Inc. All rights reserved.
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