6-{4-[1-benzyl-1H-(1,2,3)-triazole-4-yl]butyl}-3-(2-deoxy-5-O-(4,4'-dimethoxytriphenylmethyl)-β-D-erythropentofuranosyl)pyrrolo[2,3-d]pyrimidin-2(3H)one   、                                                                                      
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 0.25h,
                                                                                                                以56%的产率得到6-{4-[1-benzyl-1H-(1,2,3)-triazole-4-yl]butyl}-3-(2-deoxy-5-O-(4,4'-dimethoxytriphenylmethyl)-β-D-erythropentofuranosyl)pyrrolo[2,3-d]pyrimidin-2(3H)one 3'-[(2-cyanoethyl)-(N,N-diisopropyl)]phosphoramidite