Controlled acetolysis of 1,2-O-isopropylideneglucofuranose derivative 1 in Ac2O:AcOH:H2SO4 at 0°C is reported to isolate 2-acetoxy dimethylmethylenoxy glucofuranose derivative 2 in quantitative yield. Utility of 2 for the synthesis of alpha linked nucleoside 5a is demonstrated.
摘要 据报道,1,2-O-异亚丙基
呋喃葡萄糖衍
生物 1 在 Ac2O:AcOH:H2SO4 中在 0°C 中的受控乙酰化可以定量产率地分离出 2-乙酰氧基二甲基亚甲氧基
呋喃葡萄糖衍
生物 2。证明了 2 用于合成 α 连接的核苷 5a 的效用。