7-methoxymethoxy-2,2-dimethyl-4-methylene-(3aR,5S,7S,7aS)-perhydrobenzo[d][1,3]dioxol-5-ol

1-[5-(1-ethynyl)-2,2-dimethyl-(4S,5R)-1,3-dioxolan-4-yl]-3-tert-butyldimethylsilyloxy-(1S)-propan-1-ol

7-methoxymethoxy-2,2-dimethyl-5-tert-butyldimethylsilyloxy-(3aR,4R,5S,7S,7aS)-perhydrobenzo[d][1,3]dioxol-4-ol

7-methoxymethoxy-2,2-dimethyl-5-tert-butyldimethylsilyloxy-(3aS,5S,7S,7aS)-perhydrobenzo[d][1,3]dioxol-4-one

4-(1-ethynyl)-5-(1-methoxymethoxy-3-tert-butyldimethylsilyloxy-(1S)-propyl)-2,2-dimethyl-(4R,5S)-1,3-dioxolane