3-[6-(2-hydroxyethyl)benzo[1,3]dioxol-5-yl]-6,7-dimethoxy-2H-isoquinolin-1-one

7-[6-(2-hydroxyethyl)benzo[1,3]dioxol-5-yl]-8-methyl-8H-[1,3]dioxolo[4,5-h]isoquinolin-9-one

7-[6-(2-hydroxyethyl)benzo[1,3]dioxol-5-yl]-6-methyl-6H-[1,3]dioxolo[4,5-g]isoquinolin-5-one

7-[6-(2-hydroxyethyl)benzo[1,3]dioxol-5-yl]-8H-[1,3]dioxolo[4,5-h]isoquinolin-9-one