N-苄氧羰基-D-丙氨酸

benzyl N-[1-[(1-amino-4-methyl-1-oxopentan-2-yl)amino]-1-oxopropan-2-yl]carbamate

Boc-L-亮氨酰胺

Z-GLY-GLY-PHE-OH

Z-Gly-Gly-L-Phe-L-Leu-NH2