Synthesis of Carbohydrate-Conjugated dT Analogues Using ‘Click Chemistry’

Abstract

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.