[1-Oxo-6-(4-thiocarbamoyl-phenylcarbamoyl)-3,4-dihydro-1H-isoquinolin-2-yl]-acetic acid tert-butyl ester

[6-(4-Methylsulfanylcarbonimidoyl-benzoylamino)-1-oxo-3,4-dihydro-1H-isoquinolin-2-yl]-acetic acid tert-butyl ester

[6-(4-Methylsulfanylcarbonimidoyl-phenylcarbamoyl)-1-oxo-3,4-dihydro-1H-isoquinolin-2-yl]-acetic acid tert-butyl ester

4-(2-tert-Butoxycarbonylmethyl-1-oxo-1,2,3,4-tetrahydro-isoquinolin-6-yloxymethyl)-piperidine-1-carboxylic acid tert-butyl ester

{6-[4-(1,3-Dioxo-1,3-dihydro-isoindol-2-yl)-butoxy]-1-oxo-3,4-dihydro-1H-isoquinolin-2-yl}-acetic acid tert-butyl ester