The Application of Mitsunobu Cyclization for the Synthesis of 2′,3′-Dideoxy-C-Nucleosides Designed as Didanosine Analogues
作者:Nicole Pouli、Tony Tite、Nikolaos Lougiakis、Alexios-Leandros Skaltsounis、Panagiotis Marakos、Roxane Tenta、Jan Balzarini
DOI:10.1055/s-0029-1217364
日期:2009.7
synthesis of new 2',3'-dideoxy-C-nucleosides structurally related to didanosine has been achieved. Their preparation involved condensation of a suitably substituted, lithiated 2- or 4-picoline with 2',3'-dideoxy-5'-benzylribonolactone, followed by borohydride reduction of the resulting hemiacetals, intramolecular Mitsunobu cyclization of the derived diols, formation of the pyrazolo[3,4-c] or [4,3-b]pyridine
已经实现了与去羟肌苷结构相关的新 2',3'-双脱氧-C-核苷的合成。他们的制备包括适当取代的锂化 2- 或 4-甲基吡啶与 2',3'-二脱氧-5'-苄基核糖内酯的缩合,然后对所得半缩醛进行硼氢化物还原,衍生二醇的分子内光信环化,形成吡唑并[3,4-c]或[4,3-b]吡啶环系统和随后的保护基团的去除。