tert-butyl 3(S)-[1(S)-ethoxycarbonyl-3-cyclohexylpropyl]amino-4-oxo-2,3,4,5-tetrahydro-1,5-benzoxazepine-5-acetate

tert-butyl 3(S)-[1(R)-ethoxycarbonyl-3-cyclohexylpropyl]amino-4-oxo-2,3,4,5-tetrahydro-1,5-benzoxazepine-5-acetate

(S)-tert-butyl (4-oxo-2,3,4,5-tetrahydrobenzo[b][1,4]oxazepin-3-yl)carbamate

2(S)-3-(2-aminophenoxy)-2-((tert-butoxycarbonyl)amino)propanoic acid

(S)-2-((tert-butoxycarbonyl)amino)-3-(2-nitrophenoxy)propanoic acid