[2-[4-[7-[4-[2-[(6S)-5-[(2S)-2-(methoxycarbonylamino)-3-methylbutanoyl]-5-azaspiro[2.4]heptane-6-carbonyl]oxyacetyl]phenyl]spiro[1,3-dihydroindene-2,1'-cyclopentane]-4-yl]phenyl]-2-oxoethyl] (6S)-5-[(2S)-2-(methoxycarbonylamino)-3-methylbutanoyl]-5-azaspiro[2.4]heptane-6-carboxylate 在
ammonium acetate 作用下,
以
5,5-dimethyl-1,3-cyclohexadiene 为溶剂,
反应 12.0h,
以40.8%的产率得到methyl N-[(2S)-1-[(6S)-6-[5-[4-[7-[4-[2-[(6S)-5-[(2S)-2-(methoxycarbonylamino)-3-methylbutanoyl]-5-azaspiro[2.4]heptan-6-yl]-1H-imidazol-5-yl]phenyl]spiro[1,3-dihydroindene-2,1'-cyclopentane]-4-yl]phenyl]-1H-imidazol-2-yl]-5-azaspiro[2.4]heptan-5-yl]-3-methyl-1-oxobutan-2-yl]carbamate