113490-74-7
4(S)-azido-N-[(phenylmethoxy)carbonyl]-(S)-proline methyl ester
→
207304-86-7
(2S,4S)-N-benzyloxycarbonyl-4-aminoproline methyl ester
663948-85-4
[(3S,5S)-5-(羟甲基)-3-吡咯烷基]氨基甲酸叔丁酯