2,2-二甲基-4-(2-氧代乙基)?唑啉-3-羧酸-(S)-叔丁酯

methyl (S)-2-((tert-butoxycarbonyl)amino)-3-(furan-2-yl)propanoate

tert-butyl (S)-4-(furan-2-ylmethyl)-2,2-dimethyloxazolidine-3-carboxylate

2-acetylamino-2-(2-furylmethyl)propanedioic acid diethyl ester

D,L-N-acetyl-β-2-furylalanine