Nucleoside Analogs. 14. The Synthesis and Antitumor Activity in Mice of Molecular Combinations of 5-Fluorouracil and <i>N</i>-(2-Chloroethyl)-<i>N</i>-nitrosourea Moieties Separated by a Three-Carbon Chain
作者:R. Stanley McElhinney、Joan E. McCormick、Mike C. Bibby、John A. Double、Marco Radacic、Patrick Dumont
DOI:10.1021/jm9507237
日期:1996.1.1
5-fluorouracil (5-FU) seco-nucleosdies having as the "sugar" moiety a two-carbon (C2) side chain carrying a N-(2-chloroethyl)-N-nitrosourea group were designed as molecular combinations of antimetabolite and alkylating agent, but hydrolytic release of free 5-FU was not fast enough for significant contribution to the high activity they showed against colon and breast tumors in mice. In the present study
将具有N-(2-氯乙基)-N-亚硝基脲基团的两个碳(C2)侧链作为“糖”部分的5-氟尿嘧啶(5-FU)核糖核酸被设计为抗代谢物和烷基化的分子组合但是,游离5-FU的水解释放速度还不够快,不足以显着提高它们对小鼠结肠和乳腺肿瘤表现出的高活性。在目前对反应性更高的C3核糖核苷的合成的研究中,发现通过标准方法可以方便地获得烷氧基/尿嘧啶-1-基类型的烷氧基/尿嘧啶-1-基类型,这些基团连接到前体邻苯二甲酰亚胺的醛中心。 。甲硫基/尿嘧啶-1-基类似物需要相对大量的甲硫醇试剂,对烷基甲基硫醚的α-氯化或其S-氧化物的Pummerer重排,或异硫脲溴化铵的连续水解和甲基化的替代方案的研究令人失望。为了成功制备烷氧基/尿嘧啶-3-基化合物,用于C2同源物的途径需要进行大量的实验修饰。除了这些O,N-和S,N-乙缩醛以外,还制备了带有两个5-FU残基的一些N,N-乙缩醛。新药物已经针对小鼠实验性肿瘤