Z-Lys(ε-Boc)-Leu-Ser-Gln-Asp(β-OBut)-OH 生成 (2S)-2-[[(2S)-5-amino-2-[[(2S)-2-[[(2S)-2-[[(2S)-2-amino-6-[(2-methylpropan-2-yl)oxycarbonylamino]hexanoyl]amino]-4-methylpentanoyl]amino]-3-hydroxypropanoyl]amino]-5-oxopentanoyl]amino]-4-[(2-methylpropan-2-yl)oxy]-4-oxobutanoic acid