(4S,4aR,5S,6R,7aS,7bS)-6-[((1,1-dimethylethyl)dimethylsilyloxy)methyl]-5-(phenylmethoxy)-4,4a,5,6,7a,7b-hexahydro-2H-1,7-dioxacyclopent[cd]indene-4-ol

(4-S,4aR,5S,6R,7aS,7bS)-4,4a,5,6,7a,7b-hexahydro-6-iodomethyl-5-phenylmethoxy-2H-1,7-dioxacyclopent[cd]inden-4-ol benzoate

(4S,4aR,5S,6R,7aS,7bS)-6-[((1,1-dimethylethyl)siloxy)methyl]-(5-phenylmethoxy)-4,4a,5,6,7a,7b-hexahydro-2H-1,7-dioxacyclopent[cd]indene-4-ol benzoate

(4aS,5S,6R,7aS,7bS)-5-(acetoxy)-6-[((1,1-dimethylethyl)dimethylsiloxy)methyl]-5,6,7a,7b-tetrahydro-2H-1,7-dioxacyclopent[cd]inden-4(4aH)-one

(4aS,5S,6R,7aS,7bS)-6-[((1,1-dimethylethyl)dimethylsilyloxy)methyl]-5-phenylmethoxy-5,6,7a,7b-tetrahydro-2H-1,7-dioxacyclopent[cd]inden-4(4aH)-one