(3aα,4aS*,15bβ,15cα)-(+/-)-3a,10,15b,15c-tetrahydro-2,2-dimethyl-7H-[1,3]dioxolo[4,5-h]-1,3-dioxolo[4,5]cyclopenta[1,2-a]-[3]pyrrolo[2,1-b][3]benzazapin-9(4H)-one

(2S,3R)-rac-2,3-(isopropylidenedioxy)-5-(phenylsulfonyl)-4-cyclopentene

1-((6-bromobenzo[d][1,3]dioxol-5-yl)methyl)-4-methyl-2,6,7-trioxabicyclo[2.2.2]octane

(3aα,4α,5E,6aα)-(+/-)-4-methyl-1-[[6-[tetrahydro-2,2-dimethyl-5-(2-propenylidene)-4H-cyclopenta-1,3-dioxol-4-yl]-1,3-benzodioxol-5-yl]methyl]-2,6,7-trioxabicyclo[2.2.2]octane

(3aα,4α,5S*,6aα)-(+/-)-4-methyl-1-[[6-[tetrahydro-2,2-dimethyl-5-(phenylsulfonyl)-5-(2-propenyl)-4H-cyclopenta-1,3-dioxol-4-yl]-1,3-benzodioxol-5-yl]methyl]-2,6,7-trioxabicyclo[2.2.2]octane