Boc-4-氧代-L-脯氨酸甲酯

L-羟基脯氨酸

(6S)-5-tert-butyl 6-methyl 1,1-dibromo-5-azaspiro[2.4]heptane-5,6-dicarboxylate

(+)-(3R,7aS)-四氢-3-苯基-3H,5H-吡咯并[1,2-c]噁唑-5-酮

(3R,7aS)-6-methylene-3-phenyltetrahydropyrrolo[1,2-c]oxazol-5(1H)-one