and trimethylisocyanate (TMSNCO) was optimised as a one-step synthetic strategy for the synthesis of sugar biurets. This protocol was successfully applied to a number of 1-aminosugars, which exclusively provided the corresponding biurets in 67–99% yields. The new methodology was applied in the de novo synthesis of N1-(2-deoxy-α/β-D-erythro-pentofuranosyl)biuret (dfBU) and N1-(2-deoxy-α/β-D-erythro
1-
氨基糖和三甲基
异氰酸酯(TMSNCO)之间的反应被优化为一步合成糖缩二
脲的合成策略。该方案已成功应用于多种1-
氨基糖,它们以67-99%的产率专门提供了相应的缩二
脲。新方法是在所施加的从头合成的Ñ 1 - (2-脱氧- α/β- d -赤-pentofuranosyl)缩二
脲(dfBU)和Ñ 1 - (2-脱氧- α/β- d -赤-戊
吡喃糖基)缩二
脲(dpBU),两个已知的DNA损伤是由羟自由基引起的2'-脱氧
胞苷(dCyd)分解引起的。