Jacquot Y, Refouvelet B, Bermont L, Adessi GL, Leclercq G, Xicluna A. Synthesis and cytotoxic activity of new 2,4-diaryl-4H,5H-pyrano[3,2-c]benzopyran-5-ones on MCF-7 cells.
DIE PHARMAZIE 2002;
57:233-7. [PMID:
11998440]
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Abstract
A series of eight halogenated 2,4-diaryl-4H,5H-pyrano[3,2-c]benzopyran-5-ones have been synthesized, characterized and their stereochemistry determined. In a second stage of our work, the reported molecules were tested for their antiproliferative activity on MCF-7 breast carcinoma cells. Pharmacological results were compared with those of diethylstilbestrol (DES), an estrogen, as well as ICI 182,780, a pure antiestrogen. Then, these derivatives were evaluated for their capacity to activate the transcription of a reporter gene and for their affinity for human recombinant estrogen receptors alpha (hER alpha). These results were compared with those of coumestrol, a phytoestrogen structurally close to 2,4-diaryl-4H,5H-pyrano[3,2-c]benzopyran-5-ones, and with RU 58668, a pure antiestrogen. Although these derivatives exhibit a significant antiproliferative activity higher than that of ICI 182,780, neither of them displayed a significant estrogenicity or an affinity for hER alpha. Such results may suggest that their antiproliferative activity is not dependent of an antiestrogenic response.
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