8,9-dihydro-3,11-diisopropoxy-2,12-dimethoxy-6H-[1]benzopyrano[4',3':4,5]pyrrolo[2,1-a]isoquinolin-6-one

8,9-dihydro-3,11-diisopropoxy-14-(3-isopropoxy-4-methoxyphenyl)-2,12-dimethoxy-6H-[1]benzopyrano[4′,3′:4,5]pyrrolo[2,1-α]isoquinolin-6-one

3,11-diisopropoxy-14-(3-isopropoxy-4-methoxyphenyl)-2,12-dimethoxy-6H-[1]benzopyrano[4′,3′:4,5]pyrrolo[2,1-a]-isoquinolin-6-one

3,11-bis(acetoxy)-14-(3-acetoxy-4-methoxyphenyl)-2,12-dimethoxy-6H-[1]benzopyrano[4′,3′:4,5]pyrrolo[2,1-a]-isoquinolin-6-one