2-氰乙基N,N-二异丙基氯亚磷酰胺 、
3-<2-deoxy-5-O-(4,4'-dimethoxytrityl)-β-D-erythro-pentofuranosyl>-5-<<(dimethylamino)methylene>amino>-3,6-dihydro-7H-1,2,3-triazolo<4,5-d>pyrimidin-7-one 在
N,N-二异丙基乙胺 作用下,
以
二氯甲烷 为溶剂,
反应 2.0h,
以55%的产率得到3-<2-deoxy-5-O-(4,4'-dimethoxytrityl)-β-D-erythro-pentofuranosyl>-5-<<(dimethylamino)methylene>amino>-3,6-dihydro-7H-1,2,3-triazolo<4,5-d>pyrimidin-7-one 3'-<(2-cyanoethyl) N,N-diisopropylphosphoramidite>