ethyl 2-[(2-methylpropan-2-yl)oxycarbonylamino]cyclopentane-1-carboxylate

2-氧代环戊羧酸乙酯

(1S,2S)-2-[(1'S)-phenylethyl]aminocyclopentanecarboxylic acid

(1S,2S)-2-[[(S)-1-苯基乙基]氨基]环戊烷甲酸乙酯

二碳酸二叔丁酯