N-Boc-4-羰基-L-脯氨酸甲酯

2,5-Dibromo-N-[(3R,5S)-1-cyano-5-methyl-3-pyrrolidinyl]benzenesul fonamide

(2R,4S)-4-羟基-2-(羟甲基)-1-吡咯烷羧酸叔丁酯