N4-dibenzoylamino-N7-benzoylamino-1-(2-deoxy-β-D-ribofuranosyl)imidazo[5',4':4,5]pyrido[2,3-d]pyrimidine 在
吡啶 、
N,N-二异丙基乙胺 作用下,
以
二氯甲烷 为溶剂,
反应 1.83h,
生成 N
4-dibenzoylamino-N
7-benzoylamino-1-[2-deoxy-5-O-(4,4'-dimethoxytrityl)-β-D-ribofuranosyl]imidazo[5',4':4,5]pyrido[2,3-d]pyrimidine 2-cyanoethyl N,N'-diisopropylphosphoramidite