tert-butyl (R)-4-oxo-3-phthalimido-2,3,4,5-tetrahydro-1,5-benzothiazepine-5-acetate

(R)-2-((R)-5-tert-Butoxycarbonylmethyl-4-oxo-2,3,4,5-tetrahydro-benzo[b][1,4]thiazepin-3-ylamino)-5-methyl-hexanoic acid ethyl ester

(S)-2-((R)-5-tert-Butoxycarbonylmethyl-4-oxo-2,3,4,5-tetrahydro-benzo[b][1,4]thiazepin-3-ylamino)-5-methyl-hexanoic acid ethyl ester

tert-butyl (R)-3-<(S)-1-ethoxycarbonyl-3-cyclohexylpropyl>amino-4-oxo-2,3,4,5-tetrahydro-1,5-benzothiazepine-5-α-methylacetate

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