[(2S)-2-cyclopentyl-2-isocyanatoethyl] methyl carbonate 、 (1R,5S)-N-(4-amino-1-cyclopropyl-3,4-dioxobutan-2-yl)-3-((S)-2-amino-3,3-dimethylbutanoyl)-6,6-dimethyl-3-azabicyclo[3.1.0]hexane-2-carboxamide hydrochloride 在
N,N-二异丙基乙胺 作用下,
以
二氯甲烷 为溶剂,
反应 1.2h,
生成 [(2S)-2-[[(2S)-1-[(1R,5S)-2-[(4-amino-1-cyclopropyl-3,4-dioxobutan-2-yl)carbamoyl]-6,6-dimethyl-3-azabicyclo[3.1.0]hexan-3-yl]-3,3-dimethyl-1-oxobutan-2-yl]carbamoylamino]-2-cyclopentylethyl] methyl carbonate