(E)-(2S,7S)-2-Amino-7-benzyloxycarbonylamino-oct-4-enedioic acid dimethyl ester

(2S,5R,2'E,5'S)-2-[5'-(benzyloxycarbonylamino)-5'-carbomethoxy-pent-2-ene]-2,5-dihydro-5-isopropyl-3,6-dimethyloxypyrazine

dimethyl (2S,4E,7S)-2,7-bis(benzyloxycarbonylamino)oct-4-en-1,8-dioate

N-(tert-butoxycarbonyl)glycine 3-[N-(9-fluorenylmethoxycarbonyl)propylamino]propylamide