甲基三苯基溴化膦

N-Boc-4-氧代-脯氨酸

(S)-1-(叔丁氧基羰基)-2-甲基-4-亚甲基吡咯烷-2-羧酸

N-phenylsulphonyl-4-exomethylene-(S)-proline benzylester

N-phenylsulphonyl-N-propargyl-3-bromo-(S)-alanine benzylester