4-[(benzoylamino)-7-(2-deoxy-5-O-(4,4'-dimethoxytriyl)-β-D-erythro-pentofuranosyl)-1,2,3-triazol-4-yl-methyl]adenine 、
2-氰乙基N,N-二异丙基氯亚磷酰胺 在
N,N-二异丙基乙胺 作用下,
以
二氯甲烷 为溶剂,
反应 0.5h,
以79%的产率得到4-[(benzoylamino)-7-(2-deoxy-5-O-(4,4'-dimethoxytriyl)-β-D-erythro-pentofuranosyl)-1,2,3-triazol-4-yl-methyl]adenine 3'-(2-cyanoethyl diisopropylphosphoramidite)