4-甲基哌啶 、 ethyl 2-[4-((2R)-2-(2-[(tert-butoxy)carbonylamino]-2-methylpropanoylamino)-3-indol-3-ylpropanoylamino)imidazolyl]-2-phenylacetate 以84%的产率得到N-[(1R)-2-indol-3-yl-1-(N-{1-[2-(4-methylpiperidyl)-2-oxo-1-phenylethyl]imidazol-4-yl}carbamoyl)ethyl]-2-[(tert-butoxy)carbonylamino]-2-methylpropanamide