1-[2'-deoxy-β-D-erythro-pentafuranosyl]-7-nitro-4-(2,4,6-trimethylphenoxy)-1H-imidazo[4,5-c]pyridine 在
吡啶 、
二异丙胺 作用下,
以
二氯甲烷 为溶剂,
反应 2.5h,
生成 3'-O-(2-cyanoethyl-N,N-diisopropylphosphoramido)-5'-O-(4,4'-dimethoxytrityl)-4-O-(2,4,6-trimethylphenyl)-1-[2'-deoxy-β-D-erythro-pentofuranosyl]-7-nitro-1H-imidazo[4,5-c]pyridine