Z-Leu-Arg(Tos)-MeArg(Tos)-MeIle-OBu 生成 tert-butyl (2S,3S)-2-[[(2S)-2-[[(2S)-2-[[(2S)-2-amino-4-methylpentanoyl]amino]-5-[[amino-[(4-methylphenyl)sulfonylamino]methylidene]amino]pentanoyl]-methylamino]-5-[[amino-[(4-methylphenyl)sulfonylamino]methylidene]amino]pentanoyl]-methylamino]-3-methylpentanoate