L-焦谷氨酸甲酯

L-焦谷氨酸乙酯

(2S,4S)-1-(3,3-dimethylbutoxycarbonyl)-4-methyl-5-oxopyrrolidine-2-carboxylate

N-(4-硝基苯甲酰)-L-谷氨酸二乙酯

diethyl (2S,4S)-2-methyl-4-(4-nitrobenzamido)pentanedioate