The Synthesis of 5-Substituted-2, 4-dimethoxypyrimidines and Some Related Nucleoside Analogues

Abstract

The reaction of 5-formyl-2,4-dimethoxypyrimidine with active methylene compounds in the Knoevenagel reaction and the subsequent nucleoside formation reactions of some of the products was investigated. A new synthesis of (E)-5-(2-bromovinyl)uracil and an improved synthesis of 5-formyl-2′,3′-isopropylidene uridine are reported.