(S)-3-<(S)-ω-amino-1-ethoxycarbonylnonyl>amino-4-oxo-2,3,4,5-tetrahydro-1,5-benzoxazepine-5-acetic acid

(S)-3-<(S)-ω-amino-1-carboxynonyl>amino-4-oxo-2,3,4,5-tetrahydro-1,5-benzoxazepine-5-acetic acid

tert-butyl (S)-3-<(S)-ω-tert-butoxycarbonylamino-1-ethoxycarbonylnonyl>amino-4-oxo-2,3,4,5-tetrahydro-1,5-benzothiazepine-5-acetate

tert-butyl (S)-3-<(R)-1-ethoxycarbonyl-ω-phtalimidononyl>amino-4-oxo-2,3,4,5-tetrahydro-1,5-benzoxazepine-5-acetate

tert-butyl (S)-3-<(S)-1-ethoxycarbonyl-Ω-phtalimidononyl>amino-4-oxo-2,3,4,5-tetrahydro-1,5-benzoxazepine-5-acetate