(2S)-2-{(S)-[(4-bromophenyl)-(2,4-difluoro-phenyl)-methyl]-amino}-4-methylpentanoic acid 、
氨基乙腈 以to give (2S)-2-{(S)-[(4-bromophenyl)-(2,4-difluorophenyl)-methyl]-amino}-4-methylpentanoic acid cyanomethylamide as a white solid的产率得到(2S)-2-{(S)-[(4-bromophenyl)-(2,4-difluorophenyl)-methyl]-amino}-4-methyl pentanoic acid cyanomethylamide