(1R,2S,5S)-methyl-3-((S)-3,3-dimethyl-2-((4-nitrophenoxy)carbonylamino)butanoyl)-6,6-dimethyl-3-azabicyclo[3.1.0]hexane-2-carboxylate 、
N-[(2S)-2-amino-3,3-dimethylbutyl]-1,1,1-trifluoro-N-methylmethanesulfonamide 在
N-甲基吗啉 作用下,
以
DMF (N,N-dimethyl-formamide) 、
二氯甲烷 为溶剂,
生成 methyl (1R,2S,5S)-3-[(2S)-2-[[(2S)-3,3-dimethyl-1-[methyl(trifluoromethylsulfonyl)amino]butan-2-yl]carbamoylamino]-3,3-dimethylbutanoyl]-6,6-dimethyl-3-azabicyclo[3.1.0]hexane-2-carboxylate