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

(4S,4aS,5S,6S,7R,8R,11S,12S,12aR)-6,12-Dibenzyloxy-11-(cyclohexyldimethylsiloxy)-4,5-(isopropylidenedioxy)-4a,8,13,13-tetramethyl-1-methylenetetradecahydro-7,11-methanobenzocyclodecene-7,8-diol

(1S,2S,3S,6S,7S,8R,12S)-3,7-Dibenzyloxy-6-(tert-butyldimethylsiloxy)-2,12-(isopropylidenedioxy)-1,5,5-trimethyl-9-methylene-6-(3-oxobutyl)bicyclo[6.4.0]dodecan-4-one

2α,10β-dibenzyloxy-11β-(t-butyldimethylsiloxy)-7β-hydroxy-1α-(p-methoxybenzyloxy)-8β,15,15-trimethyl-4-methylene-trans-bicyclo[6.4.0]dodecan-9-one