二碳酸二叔丁酯

(S)-Cbz-3-氨基-Y-丁内酯

3-(S)-tert-butoxycarbonylamino-4-(2-trimethylsilanyl-ethoxymethoxy)-butyric acid methyl ester

L-boc-aspartic anhydride

methyl (3S)-3-[(tert-butoxycarbonyl)amino]-4-hydroxybutanoate