2-[2-(2-{2-[2-(5-dimethylamino-naphthalene-1-sulfonylamino)-ethoxy]-ethoxy}-ethoxy)-acetyl]-(S)-alanine-N6-tert-butyloxycarbonyl-(S)-lysyl-(S)-leucyl-(S)-valyl-(S)-phenylalanyl-(S)-phenylalanine methyl ester 、
三氟乙酸 在
三异丙基硅烷 作用下,
以
水 为溶剂,
生成 2-[2-(2-{2-[2-(5-dimethylamino-naphthalene-1-sulfonylamino)-ethoxy]-ethoxy}-ethoxy)-acetyl]-(S)-alanyl-(S)-lysyl-(S)-leucyl-(S)-valyl-(S)-phenylalanyl-(S)-phenylalanine methyl ester trifluoroacetate