Boc-L-焦谷氨酸甲酯

1-(3,5-dinitro-benzoyl)-DL-proline

1-(甲苯-4-磺酰基)-吡咯烷-2-羧酸

N-Ac-Pro-OMe

tert-butyl (S)-2-<(tert-butyloxycarbonyl)amino>-5-hydroxypentanoate