methyl [(1S)-2-methyl-1-({(2S)-2-[4-(4′-{2-[6-((2S)-3-methyl-2-{[(methyloxy)carbonyl]amino}butanoyl)-2,6-diazaspiro[3.4]-oct-7-yl]-1H-imidazol-4-yl}-4-biphenylyl)-1H-imidazol-2-yl]-1-pyrrolidinyl}carbonyl)propyl]carbamate 、
3-methyl 2-(phenylmethyl) (3S)-6,10-dioxa-2-azaspiro[4.5]decane-2,3-dicarboxylate 以to afford the title compound as a yellow solid (35 mg, 83% yield)的产率得到methyl [(1S)-1-({(2S)-2-[4-(4′-{2-[2-acetyl-6-((2S)-3-methyl-2-{[(methyloxy)carbonyl]amino}butanoyl)-2,6-diazaspiro[3.4]-oct-7-yl]-1H-imidazol-4-yl}-4-biphenylyl)-1H-imidazol-2-yl]-1-pyrrolidinyl}carbonyl)-2-methylpropyl]carbamate