2-氰乙基N,N-二异丙基氯亚磷酰胺   、                                                                                      
3(R)-hydroxy-2(S)-monomethoxytrityloxymethyl-N-[(thymin-1-yl)-acetyl] pyrrolidine                                                                                                                                                              在
                                                                                                                                                                                 
N,N-二异丙基乙胺                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
二氯甲烷                                                                                  为溶剂,
                                                                                                                                                                                        以90%的产率得到Diisopropyl-phosphoramidous acid 2-cyano-ethyl ester (2S,3R)-2-[(4-methoxy-phenyl)-diphenyl-methoxymethyl]-1-[2-(5-methyl-2,4-dioxo-3,4-dihydro-2H-pyrimidin-1-yl)-acetyl]-pyrrolidin-3-yl ester