Abstract
A new titanocenyl amide containing flavone as pendant group has been synthesized by reaction of titanocenyl carboxylic acid chloride and 7-Aminoflavone and structurally characterized by spectroscopic methods. This species and eight previously synthesized titanocenyl amide complexes have been tested in breast adenocarcinoma cancer cell line, MCF-7. The functionalization of titanocene dichloride with amides enhances the cytotoxic activity in MCF-7. Two sets of titanocenyl amides can be identified, with IC50 <100 μM and IC50>100 μM. The most cytotoxic species is Cp(CpCO-NH-C6H4-(CH2)2CH3)TiCl2 with an IC50 of 24(2) μM, followed by Cp(CpCO-NH-C6H4-Br)TiCl2, IC50 of 46(4) μM and Cp(CpCO-NH-C6H4-OCF3)TiCl2, IC50 of 49(6) μM. There is no correlation between the nature of the para substituent on the phenyl ring and the cytotoxic properties on MCF-7 cell line.
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