(4S)-4-amino-5-[[(2S,3S,5R)-3-azido-5-(5-methyl-2,4-dioxopyrimidin-1-yl)oxolan-2-yl]methoxy]-5-oxopentanoic acid

5-[(氨基亚胺甲基)硫代]-L-正缬氨酸

5-(2,5-二氧代-1-吡咯烷基)1-(2-甲基-2-丙基)N-{[(2-甲基-2-丙基)氧基]羰基}-L-谷氨酸

5-溴-N-叔丁氧羰基-L-正缬氨酸叔丁酯