(4S,5S)-4-Hydroxy-7-methyl-5-[(S)-3-methyl-2-(3-methyl-butyrylamino)-butyrylamino]-octanoic acid [(S)-1-(3-methyl-butylcarbamoyl)-ethyl]-amide 在
重铬酸吡啶 、
溶剂黄146 作用下,
生成
(S)-7-Methyl-5-[(S)-3-methyl-2-(3-methyl-butyrylamino)-butyrylamino]-4-oxo-octanoic acid [(S)-1-(3-methyl-butylcarbamoyl)-ethyl]-amide