Development of Novobiocin Analogues That Manifest Anti-proliferative Activity against Several Cancer Cell Lines
作者:Joseph A. Burlison、Christopher Avila、George Vielhauer、Donna J. Lubbers、Jeffrey Holzbeierlein、Brian S. J. Blagg
DOI:10.1021/jo702191a
日期:2008.3.1
Recent studies have shown that the DNA gyrase inhibitor, novobiocin, binds to a previously unrecognized ATP-binding site located at the C-terminus of Hsp90 and induces degradation of Hsp90-dependent client proteins at similar to 700 mu M. As a result of these studies, several analogues of the coumarin family of antibiotics have been reported and shown to exhibit increased Hsp90 inhibitory activity; however, the monomeric species lacked the ability to manifest anti-proliferative activity against cancer cell lines at concentrations tested. In an effort to develop more efficacious compounds that produce growth inhibitory activity against cancer cell lines, structure-activity relationships; were investigated surrounding the prenylated benzamide side chain of the natural product. Results obtained from these studies have produced the first novobiocin analogues that manifest anti-proliferative activity against several cancer cell lines.