A new type furo[2,3-d]pyrimidine nucleoside conjugated with various carbohydrates was synthesized using Sonogashira coupling and ‘click chemistry’. In the subsequent deprotection of the 4-toluoyl and acetyl groups with catalytic sodium methoxide in methanol, the furo[2,3-d]pyrimidine rearranged to an opened ketone-type structure. Their structures were confirmed on the basis of spectroscopy.
一种新型
呋喃[2,3-d]
嘧啶核苷与多种
碳水化合物的偶联物,通过Sonogashira偶联和‘点击
化学’合成。随后,在
甲醇中用催化量的
甲醇钠脱除4-
甲苯酰基和乙酰基的保护,
呋喃[2,3-d]
嘧啶发生了重排,变成开环的酮型结构。其结构通过光谱学得以确认。