<1R-(1α,2β,3aβ,9aβ,9bα)>-1,2,3,3a,4,6,8,9,9a,9b-Decahydro-1-hydroxy-9a,9b-dimethylspiro<7H-benzindene-7,2'-<1,3>dioxolane>-2-carboxaldehyde

<4'aS-(4'aα,5'α,6'β)>-5'-Cyano-3',4',4'a,5',6',7'-hexahydro-4'a-methylspiro<1,3-dioxolane-2,2'(1'H)-naphthalene>-6'-propanoic acid

(2S,3aS,9aS,9bS)-9a,9b-dimethyl-1-oxo-1,2,3,3a,4,6,8,9,9a,9b-decahydrospiro[cyclopenta[a]naphthalene-7,2'-[1,3]dioxolane]-2-carboxylic acid

<4'aS-(4'aα,4'bβ,8'aα)>-4',4'a,7',8',8'a,9'-Hexahydro-4'a-methyl-6'-<(trimethylsilyl)oxy>spiro<1,3-dioxolane-2,2'(1'H)-phenanthrene>-4'b(3'H)-carbonitrile