[2-[4-[7-[2-[(1R,3S,4S)-2-[(2S)-2-(methoxycarbonylamino)-3-methylbutanoyl]-2-azabicyclo[2.2.1]heptane-3-carbonyl]oxyacetyl]spiro[1,3-dihydroindene-2,1'-cyclopentane]-4-yl]phenyl]-2-oxoethyl] (1R,3S,4S)-2-[(2S)-2-(methoxycarbonylamino)-3-methylbutanoyl]-2-azabicyclo[2.2.1]heptane-3-carboxylate 在
ammonium acetate 作用下,
以
5,5-dimethyl-1,3-cyclohexadiene 为溶剂,
反应 12.0h,
以49.8%的产率得到methyl N-[(2S)-1-[(1R,3S,4S)-3-[5-[7-[4-[2-[(1R,3S,4S)-2-[(2S)-2-(methoxycarbonylamino)-3-methylbutanoyl]-2-azabicyclo[2.2.1]heptan-3-yl]-1H-imidazol-5-yl]phenyl]spiro[1,3-dihydroindene-2,1'-cyclopentane]-4-yl]-1H-imidazol-2-yl]-2-azabicyclo[2.2.1]heptan-2-yl]-3-methyl-1-oxobutan-2-yl]carbamate