(2S)-N-[4-benzyloxy-5-methoxy-2-nitrobenzoyl]pyrrolidine-2-carboxaldehyde diethyl dithioacetal

N-<2-Azido-4-(benzyloxy)-5-methoxybenzoyl>-L-proline methyl ester

(S)-1-(2-Azido-4-hydroxy-5-methoxy-benzoyl)-pyrrolidine-2-carboxylic acid methyl ester

(S)-8-Hydroxy-7-methoxy-11-thioxo-1,2,3,10,11,11a-hexahydro-benzo[e]pyrrolo[1,2-a][1,4]diazepin-5-one

(11aS)-8-hydroxy-7-methoxy-1,2,3,10,11,11a-hexahydro-5H-pyrrolo[2,1-c][1,4]benzodiazepine-5,11-dione