1,2,3,4,6,7,8,9-octahydro-1,6-dioxo-2-benzyl-5-(2-hydroxyphenoxy)-9-carbomethoxyisoquinoline

1,2,3,4,6,7,8,9-octahydro-1,6-dioxo-2-benzyl-5-<2-<(methoxymethyl)oxy>phenoxy>-9-carbomethoxyisoquinoline

decahydro-1,6-dioxo-2-benzyl-9β-carbomethoxyisoquinolino<5β,10β-c>-7-acetoxy-2,3-dihydrobenzofuran

(4aS,7aS,12bR)-3-Benzyl-7,7,9-trimethoxy-2,3,5,6,7,7a-hexahydro-1H,4aH-8-oxa-3-aza-benzo[d]fluoren-4-one

(4aR,7aR,12bR)-3-Benzyl-9-methoxy-4,7-dioxo-1,2,3,4,5,6,7,7a-octahydro-8-oxa-3-aza-benzo[d]fluorene-4a-carboxylic acid methyl ester