2-氰乙基N,N-二异丙基氯亚磷酰胺   、                                                                                      
N-[9-[(3R,4R,5R,6R)-1-benzhydryl-6-[[bis(4-methoxyphenyl)-phenylmethoxy]methyl]-5-hydroxy-4-methoxypiperidin-3-yl]purin-6-yl]benzamide                                                                                                                                                              在
                                                                                                                                                                                 
N,N-二异丙基乙胺                                                                                                                                  作用下,
                                                                                                                                                                                        反应 2.0h,
                                                                                                                以59%的产率得到N
6-benzoyl-9-{(3R,4R,5R,6R)-N-benzhydryl-5-[(2-cyanoethoxy) (N,N-diisopropylamino)phosphinoxy]-6-dimethoxytrityloxymethyl-4-methoxypiperidin-3-yl}adenine