(6R)-7t-((R)-2-tert-butoxycarbonylamino-2-phenyl-acetylamino)-3-(5-methyl-[1,3,4]thiadiazol-2-ylsulfanylmethyl)-5ξ,8-dioxo-(6rH)-5λ4-thia-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylic acid 2,2-dimethyl-propionyloxymethyl ester

N-(2-iodophenyl)-2-methyl-4-phenyloxazol-5-amine

N'-(N-tert-butoxycarbonyl-DL-phenylglycinyl)-5-nitro-2-furancarbohydrazide

[(1-Methyl-2-oxo-2-phenyl-ethylcarbamoyl)-phenyl-methyl]-carbamic acid tert-butyl ester

[(2-Oxo-cyclohexylcarbamoyl)-phenyl-methyl]-carbamic acid tert-butyl ester