Nα-t-Butoxycarbonyl-Nε-benzyloxycarbonyl-L-lysyl-L-aspartic acid dibenzyl ester 、
N-Boc-L-缬氨酸 生成 dibenzyl (2S)-2-[[(2S)-2-[[(2S)-3-methyl-2-[(2-methylpropan-2-yl)oxycarbonylamino]butanoyl]amino]-6-(phenylmethoxycarbonylamino)hexanoyl]amino]butanedioate