First synthesis of novel spin-labeled derivatives of camptothecin as potential antineoplastic agents
作者:Ying-Qian Liu、Xuan Tian、Liu Yang、Zong-Cheng Zhan
DOI:10.1016/j.ejmech.2008.01.008
日期:2008.11
In an effort to improve the stability of labile lactone ring and water solubility of camptothecin, five novel spin-labeled camptothecin derivatives were synthesized in quantitative yield by a simple modification of the carbodiimide method using the combination of scandium triflate (Sc(OTf)(3)) and 4-dimethylaminopyridine (DMAP), and the in vitro pharmacokinetic determination of the lactones of representative
为了提高喜树碱的不稳定内酯环的稳定性和水溶性,通过使用三氟甲磺酸((Sc(OTf)(3)的组合的碳二亚胺方法的简单修饰,以定量收率合成了五种新的自旋标记喜树碱衍生物。 ))和4-二甲基氨基吡啶(DMAP),以及代表化合物13a的内酯的体外药代动力学测定表明,与它们的母体喜树碱相比,内酯形式在人和小鼠血浆中的生物寿命显着增加。而且,化合物13a-13e对人膀胱癌T-24的体外细胞毒性显示出与母体药物喜树碱和临床可用药物伊立替康相似或更好的活性。