(7S)-2,2-difluoro-6-{N-[(methyloxy)carbonyl]-L-valyl}-6-azaspiro[3.4]octane-7-carboxylic acid 、
(S)-2-(4′-(2-bromoacetyl)-[1,1′-biphenyl]-4-yl)-2-oxoethyl-1-((S)-2-((methoxycarbonyl)amino)-3-methylbutanoyl)-pyrrolidine-2-carboxylate 以to afford the title compound as a white solid (104 mg, 75% yield)的产率得到2-(4'-(((((2S)-1-((2S)-3-methyl-2-(((methyloxy)carbonyl)amino)butanoyl)-2-pyrrolidinyl)carbonyl)oxy)acetyl)-4-biphenylyl)-2-oxoethyl (7S)-2.2-difluoro-6-((2S)-3-methyl-2-(((methyloxy)carbonyl)amino)butanoyl)-6-azaspiro[3.4]octane-7-carboxylate