在
三氟乙酸 作用下,
反应 0.5h,
以76%的产率得到(S)-4-((S)-1-{(S)-1-[(S)-1-((S)-1-Benzylaminooxalyl-3,3,3-trifluoro-propylcarbamoyl)-3-methyl-butylcarbamoyl]-2,2-dimethyl-propylcarbamoyl}-2-o-tolyl-ethylcarbamoyl)-4-[(S)-3-carboxy-2-(3-carboxy-propionylamino)-propionylamino]-butyric acid