(2R,4S,5S)-4-Hydroxy-2,7-dimethyl-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
(2R,5S)-2,7-Dimethyl-5-[(S)-3-methyl-2-(3-methyl-butyrylamino)-butyrylamino]-4-oxo-octanoic acid [(S)-1-(3-methyl-butylcarbamoyl)-ethyl]-amide