Synthesis of 4-nitromethylene-1,4-dihydropyrimidine derivatives as pyrimidine nucleoside analogues
作者:Alessandro Contini、Emanuela Erba、Pasqualina Trimarco
DOI:10.1016/j.tet.2008.09.079
日期:2008.12
4-dihydropyrimidine derivatives as pyrimidine nucleoside analogues was developed, starting from 3-nitropyran-2-one N-functionalized amidines. Primary amines were reacted with amidines yielding 4-nitromethylene-1,4-dihydropyrimidine derivatives. In an initial survey, several 4-nitromethylene-1,4-dihydropyrimidines turned into 4-nitromethylene-1,2,3,4-tetrahydropyrimidine derivatives under different reduction
从3-硝基吡喃-2-酮N-官能化am开始,开发了作为嘧啶核苷类似物的4-硝基亚甲基-1,4-二氢嘧啶衍生物。使伯胺与am反应,得到4-硝基亚甲基-1,4-二氢嘧啶衍生物。在初步调查中,几种4-硝基亚甲基-1,4-二氢嘧啶在不同的还原条件下转变为4-硝基亚甲基1,2,3,4-四氢嘧啶衍生物。由于分子内氢键,还原反应还引起环外双键构型从(E)变化为(Z)。