2-氰乙基N,N-二异丙基氯亚磷酰胺   、                                                                                      
N-{9-[(2R,3R,4R,5R)-5-[Bis-(4-methoxy-phenyl)-phenyl-methoxymethyl]-4-hydroxy-3-(2-trimethylsilanyl-ethoxymethoxy)-tetrahydro-furan-2-yl]-9H-purin-6-yl}-benzamide                                                                                                                                                              在
                                                                                                                                                                                 
N,N-二异丙基乙胺                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
二氯甲烷                                                                                  为溶剂,
                                                                                                                                                                                        以88%的产率得到Diisopropyl-phosphoramidous acid (2R,3R,4R,5R)-5-(6-benzoylamino-purin-9-yl)-2-[bis-(4-methoxy-phenyl)-phenyl-methoxymethyl]-4-(2-trimethylsilanyl-ethoxymethoxy)-tetrahydro-furan-3-yl ester 2-cyano-ethyl ester