(S)-3-((S)-asparaginylamino)-4-<4'-<(3'-carbethoxypropyl)oxy>phenyl>-1-((S)-N-prolyl-(S)-isoleucyl-(S)-valine amide)-butan-2-ol                                                                                                                                                              在
                                                                                                                                                                                 (benzotriazo-1-yloxy)tris(dimethylamino)phosphonium hexafluorophosphate   、                                                                                                  
N,N-二异丙基乙胺                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
N,N-二甲基甲酰胺                                                                                  为溶剂,
                                                                                                                                                    反应 1.0h,
                                                                                                                以28%的产率得到<2(R),11'(S),8'(S)>-2-<6',9'-dioxo-8'-ethanamido-2'-oxa-7',10'-diazabicyclo<11.2.2>heptadeca-13',15',16'-trien-11-yl>-1-(N-(S)-prolyl-(S)-isoleucyl-(S)-valine amide)ethan-2-ol