顺式-N-BOC-4-氰基-L-脯氨酸甲酯

(4S)-1-(tert-butoxycarbonyl)-4-cyano-L-proline ethyl ester

benzyl (2S,4S)-1-tert-butoxycarbonyl-4-cyano-2-pyrrolidinecarboxylate

1-(tert-butyl) 2-ethyl (2S,4R)-4-((methylsulfonyl)oxy)pyrrolidine-1,2-dicarboxylate

(2S,4R)-BOC-Γ-甲磺酰基氧甲基脯氨酸甲酯