(1S,2S,3S,4R,6R,7S,8R,12S)-3,7-Dibenzyloxy-4-(tert-butyldimethylsiloxy)-2,12-(isopropylidenedioxy)-6-(p-methoxybenzyloxy)-1,5,5-trimethyl-9-methylenebicyclo[6.4.0]dodecane

(1R,2S,3S,5R,6S,7S,8S,9S)-2,6-Dibenzyloxy-3-(3-butenyl)-5-(tert-butyldimethylsiloxy)-7,9-(isopropylidenedioxy)-4,4,8-trimethyl-12-methylenebicyclo[6.4.0]dodecan-3-ol

4-[(1S,2S,3R,5R,6R,8S)-2,6-Dibenzyloxy-5-(tert-butyldimethylsiloxy)-3-(p-methoxybenzyloxy)-4,4,8-trimethyl-7-oxocyclooctyl]-4-pentenal

(2R,3R,5R,6S,7S,8S)-2,6-Dibenzyloxy-3-(tert-butyldimethylsiloxy)-7-[1-(3-hydroxypropyl)vinyl]-5-(p-methoxybenzyloxy)-4,4,8-trimethylcyclooctanone

(2R,3R,5R,6S,7S,8S)-2,6-Dibenzyloxy-3-(tert-butyldimethylsiloxy)-5-(p-methoxybenzyloxy)-4,4,8-trimethyl-7-{1-[3-(triethylsiloxy)propyl]vinyl}cyclooctanone