(3R,4S,4aS,8R,8aS,2'S,3a'R,6a'S)-8a-(tert-butyldimethylsilanyloxymethyl)-4-(hexahydrofuro[2,3-b]furan-2'-yl)-3,4-dimethyloctahydro-8-vinylnaphthalen-1-one

(+/-)-tetrahydrofuro[2,3-b]furan-2-one

(3R,5R)-(5-isopropenyl-2,3-dimethylcyclohex-1-enyloxy)trimethylsilane

(+/-)-2-methoxyhexahydrofuro[2,3-b]furan

(5R,6R,2'S,3a'R,6a'S)-6-(hexahydrofuro[2,3-b]furan-2'-yl)-5,6-dimethylcyclohex-2-enone