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  • Title: Spiro-bicyclo[2.2.2]octane derivatives as paclitaxel mimetics. Synthesis and toxicity evaluation in breast cancer cell lines.
    Author: Manner S, Oltner VT, Oredsson S, Ellervik U, Frejd T.
    Journal: Org Biomol Chem; 2013 Nov 07; 11(41):7134-44. PubMed ID: 24057031.
    Abstract:
    Paclitaxel is one of the most important anti-cancer agents introduced during the last 20 years. However, the use of paclitaxel is limited by undesirable side effects as well as the development of drug resistance. Here, we report a synthetic strategy towards spiro-bicyclo[2.2.2]octane derivatives, which includes double Michael addition and ring-closing metathesis as key synthetic steps. This strategy was used to synthesize a series of spiro-bicyclic compounds designed to be paclitaxel mimetics, which were evaluated in human breast-derived cell lines. One of these paclitaxel mimetics showed toxicity, although at higher concentrations than paclitaxel itself. In addition, two other spiro-bicyclic compounds, lacking the paclitaxel side chain, showed toxicity.
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