tert-Butyl (R)-3-(2,5-dichlorobenzyl)piperazine-1-carboxylate

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

tert-butyl (3R)-3-(trifluoromethoxy)pyrrolidine-1-carboxylate

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

tert-butyl (R)-3-((2R,3R)-2-(benzo[d]thiazol-2-yldisulfanyl)-1-(1-methoxy-3-methyl-1-oxobut-2-en-2-yl)-4-oxoazetidin-3-yl)-2,2-dimethyl-4-oxo-5-phenylimidazolidine-1-carboxylate

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

tert-butyl (R)-3-(propan-2-ylideneamino)pyrrolidine-1-carboxylate

tert-butyl (R)-3-((2R,3R)-2-(benzo[d]thiazol-2-yldisulfanyl)-1-(2-methoxy-2-oxoacetyl)-4-oxoazetidin-3-yl)-2,2-dimethyl-4-oxo-5-phenylimidazolidine-1-carboxylate