(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