三氟乙酸 、
(R)-2-[(2S,3S)-2-(2-tert-Butoxycarbonylamino-acetylamino)-3-methyl-pentanoylamino]-3-{(R)-2-[(2S,3S)-2-(2-tert-butoxycarbonylamino-acetylamino)-3-methyl-pentanoylamino]-2-ethoxycarbonyl-ethyldisulfanyl}-propionic acid ethyl ester 反应 1.0h,
以99%的产率得到(R)-2-[(2S,3S)-2-(2-Amino-acetylamino)-3-methyl-pentanoylamino]-3-{(R)-2-[(2S,3S)-2-(2-amino-acetylamino)-3-methyl-pentanoylamino]-2-ethoxycarbonyl-ethyldisulfanyl}-propionic acid ethyl ester; compound with trifluoro-acetic acid