37 research outputs found

    Telithromycin

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    Effect of fluorination on the pharmacological profile of 11β isomers of fulvestrant in breast carcinoma cells

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    We describe the synthesis of an 11beta isomer 3 of the steroidal antiestrogen fulvestrant 2. Partial fluorination of the 11beta side chain in 3 leads to 4, which still shows strong antiproliferative activity on MCF-7 cells. However, unlike 2 and 3, compound 4 fails to down-regulate estrogen receptor alpha (ERalpha). This result suggests that ERalpha down-regulation is not a sine qua non condition for the antitumor activity of steroidal antiestrogens.SCOPUS: ar.jinfo:eu-repo/semantics/publishe
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