Benzimidazole 2′-Isonucleosides: Design, Synthesis, and Antiviral Activity of 2-Substituted-5,6-Dichlorobenzimidazole 2′-Isonucleosides
作者:G. A. Freeman、D. W. Selleseth、J. L. Rideout、R. J. Harvey
DOI:10.1080/15257770008033001
日期:2000.1
on nucleophilic displacements of a 2'-tosylate from carbohydrate intermediates with 2-bromo-5,6-dichlorobenzidazole. 2-Bromo and 2-isopropyl amino analogs with 3'- and 5'-oxo and deoxy substitutions were prepared. The benzimidazole-2-'isonucleosides presented here demonstrated reduced activity against HCMV when compared to other D-ribofuranosyl benzimidazole analogs. In addition, they were not found
2,5,6-三卤代苯并咪唑-β-D-呋喃核糖基核苷和2-取代的氨基5,6-二氯苯并咪唑-β-L-呋喃核糖基核苷是人巨细胞病毒(HCMV)的有效和选择性抑制剂。D-呋喃核糖基类似物在体内迅速代谢,使其不适合用作候选药物。不稳定性的主要来源被认为是异头键。介绍了一系列化学稳定的苯并咪唑-2'-异核苷的合成。所使用的合成方案基于具有2-溴-5,6-二氯苯并恶唑的碳水化合物中间体的2'-甲苯磺酸酯的亲核取代。制备了具有3'-和5'-氧代和脱氧取代的2-溴和2-异丙基氨基类似物。苯并咪唑-2-' 与其他D-呋喃呋喃糖基苯并咪唑类似物相比,此处呈现的异核苷显示出降低的抗HCMV活性。另外,未发现它们是HIV的抑制剂。