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However, the use of
copper(II) salts as anticancer drugs presents some drawbacks, which are mainly related to their toxicity and relatively poor bioavailability. To overcome these limitations,
copper(II) complexes of multidentate chelate ligands have
been evaluated in recent years as alternatives to simple
copper salts. In this paper, we report the synthesis of several
new copper(II) complexes of various amino acid-derived
Schiff base ligands. It is well known that 5-Fluorouracil (5-FU) remains the most commonly used anticancer drug for
the treatment of solid tumors, although objective response
rates are as low as 20%. Biological activity data showed that
the complexes obtained in this study were more cytotoxic
than 5-FU against tumor cell lines.

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