N-Boc-反式-4-羟基-L-脯氨酸甲酯

(2S,4S)-4-formyloxypyrrolidine-1,2-dicarboxylic acid 1-tert-butyl ester 2-ethyl ester

(2S,4S)-1-tert-Butyl 2-methyl 4-(benzoyloxy)pyrrolidine-1,2-dicarboxylate

1-O-tert-butyl 2-O-methyl (2S,4S)-4-(4-nitrobenzoyl)oxypyrrolidine-1,2-dicarboxylate

二碳酸二叔丁酯