2-脱氧-2,2-二氟戊呋喃糖-1-酮 3,5-二安息香酸盐置于三氟甲磺酸三甲基硅酯,Lithium Tri-T-Butoxyaluminum Hydride,三乙胺体系中,用 四氢呋喃,乙醚,二氯甲烷 用作溶剂,化学反应 24.5H,反应生成2',2'-二氟-2'-脱氧胞嘧啶核苷-3',5'-二苯甲酸酯
参考文献:Stereospecific Synthesis Of 2-Deoxy-2,2-Difluororibonolactone And Its Use In The Preparation Of 2'-Deoxy-2',2'-Difluoro-β-D-Ribofuranosyl Pyrimidine Nucleosides: The Key Role Of Selective Crystallization
标题:Stereospecific Synthesis Of 2-Deoxy-2,2-Difluororibonolactone And Its Use In The Preparation Of 2'-Deoxy-2',2'-Difluoro-β-D-Ribofuranosyl Pyrimidine Nucleosides: The Key Role Of Selective Crystallization
摘要:本文描述了潜在抗癌药物2'-脱氧-2',2'-二氟胞苷(吉西他滨)的立体特异性合成.通过两次非对映选择性结晶实现了立体选择性:即关键中间体二氟乳糖内酯2A的结晶,以及从异头混合物中结晶出吉西他滨的盐酸盐16B.由于2A可以大量获得,因此合成了其他2'-脱氧-2',2'-二氟嘧啶核苷,如2'-脱氧-2',2'-二氟尿苷(19),用于结构-活性关系研究.
Doi:10.1055/s-1992-26167