2-Bromo-1-[4-[7-(2-bromoacetyl)spiro[1,3-dihydroindene-2,1'-cyclopentane]-4-yl]phenyl]ethanone 、
(2S,4R)-4-fluoro-1-[(2S)-2-(methoxycarbonylamino)-3-methylbutanoyl]pyrrolidine-2-carboxylic acid 在
N,N-二异丙基乙胺 作用下,
以
乙腈 为溶剂,
以67.9%的产率得到[2-[4-[7-[2-[(2S,4R)-4-fluoro-1-[(2S)-2-(methoxycarbonylamino)-3-methylbutanoyl]pyrrolidine-2-carbonyl]oxyacetyl]spiro[1,3-dihydroindene-2,1'-cyclopentane]-4-yl]phenyl]-2-oxoethyl] (2S,4R)-4-fluoro-1-[(2S)-2-(methoxycarbonylamino)-3-methylbutanoyl]pyrrolidine-2-carboxylate