3-Cyclohexyl-2-[[1-cyclohexyl-2-(2-phenylquinoxalin-6-yl)benzimidazole-5-carbonyl]amino]propanoic acid 、
N-(fluorenylmethyloxycarbonyl)-L-leucinal 以producing 8.1 mg of the title compound (14% yield)的产率得到2-[[1-Cyclohexyl-2-(2-phenylquinoxalin-6-yl)benzimidazole-5-carbonyl]amino]-4-methyl-pentanoic acid