(2S,4S)-1-tert-butyl 2-methyl 4-allylpyrrolidine-1,2-dicarboxylate

(2S,4S)-4-allyl-5-oxopyrrolidine-1,2-dicarboxylic acid 1-tert-butyl ester 2-methyl ester

二碳酸二叔丁酯

N-叔丁氧羰基-L-谷氨酸二甲酯

methyl (2S,4S)-4-allyl-5-oxopyrrolidine-2-carboxylate