2,2-Dimethyl-propionic acid (1S,2S,3S,4R)-2-(tert-butyl-dimethyl-silanyloxymethyl)-3-((R)-2,2-dimethyl-[1,3]dioxolan-4-yl)-4-methoxymethoxymethyl-2-methyl-cyclohexylmethyl ester

(1R,2S,3S,4S)-3-((R)-2,2-Dimethyl-[1,3]dioxolan-4-yl)-2-methyl-bicyclo[2.2.2]oct-5-ene-2-carboxylic acid ethyl ester

[(1S,2S,3R,6S)-2-((R)-2,2-Dimethyl-[1,3]dioxolan-4-yl)-6-hydroxymethyl-3-methoxymethoxymethyl-1-methyl-cyclohexyl]-methanol

(3aS,6R,7S,7aS)-7-((R)-2,2-Dimethyl-[1,3]dioxolan-4-yl)-6-hydroxymethyl-7a-methyl-hexahydro-isobenzofuran-1-one

(3aS,6R,7S,7aS)-7-((R)-2,2-Dimethyl-[1,3]dioxolan-4-yl)-6-methoxymethoxymethyl-7a-methyl-hexahydro-isobenzofuran-1-one