methyl (2S,4E)-2-(benzyloxycarbonylamino)-6-oxohex-4-enoate

{(E)-(1S,6S)-6-Benzyloxycarbonylamino-1,6-bis-[({3-[(9H-fluoren-9-ylmethoxycarbonyl)-propyl-amino]-propylcarbamoyl}-methyl)-carbamoyl]-hex-3-enyl}-carbamic acid benzyl ester

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

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

methyl (2S,4E)-2-(benzyloxycarbonylamino)-6-bromohex-4-enoate

((E)-(1S,6S)-6-Benzyloxycarbonylamino-1,6-bis-{[(3-dimethylamino-propylcarbamoyl)-methyl]-carbamoyl}-hex-3-enyl)-carbamic acid benzyl ester

methyl (2S,4E)-2-(benzyloxycarbonylamino)-6-hydroxyhex-4-enoate

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

{(1S,6S)-6-Benzyloxycarbonylamino-1,6-bis-[({3-[(9H-fluoren-9-ylmethoxycarbonyl)-propyl-amino]-propylcarbamoyl}-methyl)-carbamoyl]-hexyl}-carbamic acid benzyl ester

(2S,4E,7S)-2,7-bis(benzyloxycarbonylamino)oct-4-en-1,8-dioic acid