1-Benzo[1,3]dioxol-5-ylmethyl-6,7-dimethoxy-2-nitroso-1,2,3,4-tetrahydro-isoquinolin-4-ol

1-(1,3-benzodioxol-5-yl methyl)-6,7-dimethoxy-4-(1-methyl-2-pyrrolidinyl)isoquinoline

(1-Benzo[1,3]dioxol-5-ylmethyl-4-hydroxy-6,7-dimethoxy-4-pyrrolidin-2-yl-3,4-dihydro-1H-isoquinolin-2-yl)-phenyl-methanone

2-(1-Benzo[1,3]dioxol-5-ylmethyl-2-benzyl-4-hydroxy-6,7-dimethoxy-1,2,3,4-tetrahydro-isoquinolin-4-yl)-pyrrolidine-1-carbaldehyde

(1-Benzo[1,3]dioxol-5-ylmethyl-4-hydroxy-6,7-dimethoxy-3,4-dihydro-1H-isoquinolin-2-yl)-phenyl-methanone