An alternative strategy for the synthesis of 3′-azido-2′,3′-dideoxy-4′-thionucleosides starting from d-xylose
作者:Bougrine Tber、Nour-Eddine Fahmi、Gino Ronco、Pierre Villa、David F. Ewing、Grahame Mackenzie
DOI:10.1016/0008-6215(94)00296-r
日期:1995.2
Abstract Methyl 5-O- acetyl-3-azido-2,3-dideoxy-4-thio -α,β- d -erythro- pentofuranoside and 1,5-O- diacetyl-3-azido-2,3-dideoxy-4-thio -α,β- d -erythro- pentofuranose were prepared in twelve and thirteen steps, respectively, by an efficient route starting from d -xylose. Both compounds were easily converted into an anomeric mixture of pyrimidine nucleosides by reaction with the 2,4-bi(trimethylsilyloxy)
摘要5-O-乙酰基-3-叠氮基-2,3-二脱氧-4-硫代-α,β-d-赤型戊呋喃糖苷和1,5-O-二乙酰基-3-叠氮基-2,3-二脱氧-甲基4-硫代-α,β-d-赤型戊呋喃糖分别通过十二烷基和十三步骤,从d-木糖开始制备。通过在路易斯酸的存在下与2,4-二(三甲基甲硅烷基氧基)衍生物反应,两种化合物都容易转化为嘧啶核苷的异头混合物。通过色谱分离异头混合物。AZT的4'-硫代类似物和相关的尿苷核苷已通过一种新型且更有效的方法制备。