(S)-2-[2-(Benzyloxy)phenyl]-2-oxazoline-4-carboxylic acid

6-(Acetyl-benzyloxy-amino)-2-[(S)-2-(2-benzyloxy-benzoylamino)-3-hydroxy-propionylamino]-hexanoic acid methyl ester

isopropyl (S)-2-(2-(benzyloxy)phenyl)-4,5-dihydrooxazole-4-carboxylate

6-(Acetyl-benzyloxy-amino)-2-{[(R)-2-(2-benzyloxy-phenyl)-4,5-dihydro-oxazole-4-carbonyl]-amino}-hexanoic acid