Synthesis and cytotoxic activity of a new series of topoisomerase I inhibitors
作者:Sabrina Dallavalle、Sonia Gattinoni、Stefania Mazzini、Leonardo Scaglioni、Lucio Merlini、Stella Tinelli、Giovanni L. Beretta、Franco Zunino
DOI:10.1016/j.bmcl.2007.12.055
日期:2008.2
A series of structurally simple analogues of natural topopyrone C were synthesized and tested for cytotoxic and topoisomerase I inhibitory activities. The removal of the hydroxyl groups at the 5 and 9 positions resulted in an increased cytotoxic potency and ability to stabilize topoisomerase-mediated cleavage. In addition, the results suggest that some structural features, such as the pyrone ring and