(-)-(3aR,4R,5R,6aR)-5-(tert-butyldimethylsilyloxy)-4-((3S,4S,E)-3-(tert-butyldimethylsilyloxy)-4-methyl-oct-1-en-6-ynyl)hexahydropentalene-2(1H)-one

(+)-(E)-2-((3aS,4R,5R,6aS)-5-(tert-butyldimethylsilyloxy)-4-((3S,4S,E)-3-(tert-butyldimethylsilyloxy)-4-methyloct-1-en-6-ynyl)hexahydropentalen-2(1H)-ylidene)ethanol

(-)-tert-butyl ((3'aS,4'R,5'R,6'aR)-4'-((3S,4S,E)-3-(tert-butyldimethylsilyloxy)-4-methyloct-1-en-6-ynyl)-5,5-dimethylhexahydro-1'H-spiro[[1,3]-dioxane-2,2'-pentalene]-5'-yloxy)dimethylsilane

(+)-(E)-((1S,2R)-2-(2-phenylpropan-2-yl)cyclohexyl)-2-((3aS,4R,5R,6aS)-5-(tert-butyldimethylsilyloxy)-4-((3S,4S,E)-3-(tert-butyldimethylsilyloxy)-4-methyloct-1-en-6-ynyl)hexahydropentalen-2(1H)-ylidene)acetate