benzyl 4-methyl-2-[[2-[(2-methylpropan-2-yl)oxycarbonylamino]-3-phenylmethoxypropanoyl]amino]pentanoate 、
Boc-Phe-ONB 生成 benzyl 4-methyl-2-[[2-[[2-[(2-methylpropan-2-yl)oxycarbonylamino]-3-phenylpropanoyl]amino]-3-phenylmethoxypropanoyl]amino]pentanoate