Synthesis and biological evaluation of 5-substituted-4-nitroimidazole ribonucleosides
作者:Ahmad Hasan、Carla R. Lambert、Prem C. Srivastava
DOI:10.1002/jhet.5570270707
日期:1990.11
The imidazole nucleosides, 4(5)-bromo-5(4)-nitro-1-β-D-ribofuranosylimidazoles, have been prepared via glycosylation of the trimethylsilylated aglycone, 4(5)-bromo-5(4)-nitroimidazole, with tetra-O-acetyl-β-D-ribo-furanose followed by removal of the acetyl protecting groups. The 5-bromo-4-nitro-1-β-D-ribofuranosylimidazole nucleoside was acetonated to produce 5-bromo-4-nitro-1-(2,3-O-isopropyliden
咪唑核苷4(5)-溴5(4)-硝基-1-β-D-呋喃呋喃基氨基咪唑是通过三甲基甲硅烷基化糖苷配基4(5)-溴-5(4)-硝基咪唑的糖基化制备的,用四-O-乙酰基-β-D-核糖呋喃糖,然后除去乙酰基保护基。对5-溴-4-硝基-1-β-D-呋喃呋喃基嘧啶核苷进行丙酮化,生成5-溴-4-硝基-1-(2,3 - O-异亚丙基-β-D-呋喃呋喃糖基)-咪唑。环化得到相应的脱水核苷5,5'-脱水-4-硝基-5-氧代-1-(2,3 - O-异亚丙基-β-D-呋喃呋喃糖基)咪唑。用氢硫化钠处理5-溴-4-硝基咪唑核苷,得到5-巯基-4-硝基-1-β-D-呋喃呋喃基嘧啶咪唑5-钠盐,将其用烷基化E -1,5-二碘戊-1-烯生成5-(E -1-碘-1-戊烯-5-基)硫基-4-硝基-1-β-D-呋喃呋喃基咪唑。使用放射性标记的二碘戊烯类似地制备相应的碘125标记的化合物。5-溴-4-硝基咪唑,5-巯基-4-硝基