乙醇

(S)-1-苄基-3-异丁基哌嗪-2,5-二酮

1-N-Boc-4-N-苄基-2-乙基哌嗪

1-benzyl-5-hydroxy-3,6-dihydro-2H-pyridine-4-carbonitrile

4-苄乙氧基羰基甲基氨基-丁酸乙酯