(2R,4R,5S)-2-((S)-aziridin-2-yl)-3-oxa-1-azabicyclo[3.1.0]hexan-4-ol 、
S-ethyl 3-isocyanopropanethioate 、 以
六氟异丙醇 为溶剂,
以20%的产率得到S-ethyl 3-[[(2R,3S,7S,10S,19S)-16-benzyl-7-methyl-10-(2-methylsulfanylethyl)-6,9,12,15,18-pentaoxo-1,5,8,11,14,17-hexazatricyclo[17.3.0.03,5]docosane-2-carbonyl]amino]propanethioate