Nucleosides. 133. Synthesis of 5-alkenyl-1-(2-deoxy-2-fluoro-.beta.-D-arabinofuranosyl)cytosines and related pyrimidine nucleosides as potential antiviral agents
作者:Michael E. Perlman、Kyoichi A. Watanabe、Raymond F. Schinazi、Jack J. Fox
DOI:10.1021/jm00383a009
日期:1985.6
The synthesis of 1-(2-deoxy-2-fluoro-beta-D-arabinofuranosyl)cytosines with a halovinyl or vinyl substituent at C-5 was accomplished from the corresponding 5-iodo (FIAC, 1) and/or 5-chloromercuri nucleoside analogues with use of Li2PdCl4- and Pd(OAc)2-mediated coupling reactions. Thiation of the benzoylated derivative of the 5-ethyluracil nucleoside 3 followed by S-methylation and then ammonolysis
由相应的5-碘(FIAC,1)和/或5-氯汞,完成在C-5上具有卤乙烯基或乙烯基取代基的1-(2-脱氧-2-氟-β-D-阿拉伯呋喃糖基)胞嘧啶的合成Li2PdCl4-和Pd(OAc)2介导的偶联反应的核苷类似物。对5-乙基尿嘧啶核苷3的苯甲酰化衍生物进行硫代化,然后进行S-甲基化,然后进行氨解,得到了5-乙基-2'-氟-ara-C。5-乙炔基-2'-氟代-ara-C(19a)和5-乙炔基-2'-氟代-ara-U(19b)也分别通过PdII / CuI与(三甲基甲硅烷基)乙炔催化偶联。通过使用H 2 O / Me 2 SO对初始偶联产物进行选择性糖脱保护,可以分离出相应的5- [2-(三甲基甲硅烷基)乙炔基]衍生物18a和18b。大多数新化合物在体外均表现出针对HSV-1和HSV-2的活性,已知的相应的较早合成的5-链烯基尿嘧啶核苷也是如此。5-乙烯基胞嘧啶核苷10和尿嘧啶核苷分别对HSV-1(ED90分别为0