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Oct 2014 Bioorganic & medicinal chemistry

Synthesis, anti-cancer and anti-inflammatory activity of novel 2-substituted isoflavenes.


Eiffe E, Pasquier E, Kavallaris M, Herbert C, StC Black D, Kumar N


Fifteen novel 2-substituted isoflavenes were synthesised via nucleophilic addition to isoflavylium salts. Twelve of the newly synthesised isoflavenes, along with the unsubstituted parent isoflavene, were tested in cell viability assays against the SHEP neuroblastoma and MDA-MB-231 breast adenocarcinoma cell lines. While the 2-substituted isoflavenes displayed a range of anti-proliferative activities, in most cases they were less active that the unsubstituted isoflavene (IC50=9.9 μM vs SHEP; IC50=33 μM vs MDA-MB-231). However, compound 7f, derived from the reaction between isoflavylium salt 5 and para-methoxyacetophenone, showed improved anti-proliferative activity against breast cancer cells (IC50=7.6 μM). Furthermore, compound 7f, as well as analogues 7a, 7c, 11d and 14, inhibited the production of interleukin-6 in LPS-activated RAW 264.7 cells.

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