A New Strategy To Improve the Metabolic Stability of Lactone: Discovery of (20<i>S</i>,21<i>S</i>)-21-Fluorocamptothecins as Novel, Hydrolytically Stable Topoisomerase I Inhibitors
作者:Zhenyuan Miao、Lingjian Zhu、Guoqiang Dong、Chunlin Zhuang、Yuelin Wu、Shengzheng Wang、Zizao Guo、Yang Liu、Shanchao Wu、Shiping Zhu、Kun Fang、Jianzhong Yao、Jian Li、Chunquan Sheng、Wannian Zhang
DOI:10.1021/jm400906z
日期:2013.10.24
was validated by the discovery of (20S,21S)-21-fluorocamptothecins as hydrolytically stable topoisomerase I inhibitors. A highly potent camptothecin derivative, 8l, was successfully identified, which showed excellent in vitro and in vivo antitumor activities and represents a promising lead for the discovery of novel antitumor agents. Interestingly, this study also provided a new structure–activity
内酯是具有生物活性的天然产物中的常见结构基序。然而,内酯的代谢不稳定性显着降低了其体内效力。在本研究中,通过设计α-氟醚作为内酯的新型生物等排体,提供了提高内酯代谢稳定性的新策略。通过发现(20 S,21 S)-21-氟喜树碱为水解稳定的拓扑异构酶I抑制剂,证实了α-氟醚/内酯替代的有效性。高效喜树碱衍生物8升已成功鉴定出具有良好的体外和体内抗肿瘤活性,并代表了发现新型抗肿瘤药物的有希望的先导。有趣的是,这项研究还为喜树碱的C21-羰基提供了新的结构-活性关系,这被认为是必不可少的药效团。我们的结果表明,保守的C21-羰基可被氟取代基取代。α-氟醚可普遍用于改善内酯的代谢稳定性。