(R)-2-((R)-5-Carboxymethyl-4-oxo-2,3,4,5-tetrahydro-benzo[b][1,4]thiazepin-3-ylamino)-4-cyclohexyl-butyric acid ethyl ester; hydrochloride

3(R)-[1(S)-ethoxycarbonyl-3-cyclohexylpropyl]amino-4-oxo-2,3,4,5-tetrahydro-1,5-benzothiazepine-5-acetic acid hydrochloride

benzyl 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(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