Synthesis of 5′-Methylene-Phosphonate Furanonucleoside Prodrugs: Application to <scp>D</scp>-2′-Deoxy-2′-α-fluoro-2′-β-<i>C</i>-methyl Nucleosides
作者:Ugo Pradere、Franck Amblard、Steven J. Coats、Raymond F. Schinazi
DOI:10.1021/ol301937v
日期:2012.9.7
A new and facile synthetic pathway to metabolically stable 5′-methylene-bis(pivaloyloxymethyl)(POM)phosphonate furanonucleoside prodrugs is reported. The key step involves a Horner–Wadsworth–Emmons reaction of a tetra(pivaloyloxymethyl) bisphosphonate salt with appropriately protected 5′-aldehydic nucleosides. This efficient approach was applied for the synthesis HCV related 2′-deoxy-2′-α-fluoro-2′-β-C-methyl
报道了代谢稳定的 5'-亚甲基-双(新戊酰氧基甲基)(POM)膦酸酯呋喃核苷前药的新且简便的合成途径。关键步骤涉及四(新戊酰氧基甲基)二膦酸盐与适当保护的 5'-醛核苷的霍纳-沃兹沃斯-埃蒙斯反应。这种有效的方法被应用于合成HCV相关的2'-脱氧-2'-α-氟-2'-β- C-甲基核苷。