二(对硝基苯)碳酸酯 、 (2S)-5-(Carbamoylamino)-N-[4-(hydroxymethyl)phenyl]-2-[[(2S)-3-methyl-2-(pent-4-enoylamino)butanoyl]amino]pentanamide 在
N,N-二异丙基乙胺 作用下,
以
N,N-dimethyl-d
6-formamide 为溶剂,
以81%的产率得到[4-[[(2S)-5-(carbamoylamino)-2-[[(2S)-3-methyl-2-(pent-4-enoylamino)butanoyl]amino]pentanoyl]amino]phenyl]methyl (4-nitrophenyl) carbonate