6-hydroxy-3,4-dihydro-1-oxo-2(1H)-isoquinolineacetic acid 1,1-dimethylethyl ester

(6-Isocyanato-1-oxo-3,4-dihydro-1H-isoquinolin-2-yl)-acetic acid tert-butyl ester

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

[6-(5-Amino-pentyloxy)-1-oxo-3,4-dihydro-1H-isoquinolin-2-yl]-acetic acid tert-butyl ester

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