2-甲基-2-丙基[(2S)-4-甲基-1-氧代-2-戊烷基]氨基甲酸酯

N-叔丁氧羰基-L-亮氨醇

(S)-(S)-2-((tert-butoxycarbonyl)amino)-4-methylpentanoic (ethyl carbonic) anhydride

(S)-5-[(2-t-butoxycarbonylamino-4-methyl)-pentyl]-2,2-dimethyl-1,3-dioxane-4,6-dione

[(S)-1-(2,2-Dimethyl-4,6-dioxo-[1,3]dioxane-5-carbonyl)-3-methyl-butyl]-carbamic acid tert-butyl ester