2-氰乙基N,N-二异丙基氯亚磷酰胺   、                                                                                      
1-<2-Deoxy-5-O-(4,4'-dimethoxytriphenylmethyl)-β-D-erythro-pentofuranosyl>-4-<<(dimethylamino)methylidene>amino>-3-(hex-1-ynyl)-1H-pyrazolo<3,4-d>pyrimidine                                                                                                                                                              在
                                                                                                                                                                                 
N,N-二异丙基乙胺                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
四氢呋喃                                                                                  为溶剂,
                                                                                                                                                    反应 0.5h,
                                                                                                                以64%的产率得到1-<2-Deoxy-5-O-(4,4'-dimethoxytriphenylmethyl)-β-D-erythro-pentofuranosyl>-4-<<(dimethylamino)methylidene>amino>-3-(hex-1-ynyl)-1H-pyrazolo<3,4-d>pyrimidine 3'-<(2-cyanoethyl) N,N-diisopropylphosphoramidite>