(4aS,5S,6S,8aS)-6-(tert-butyldimethylsiloxy)-5,8a-dimethyl-5-(4-methylpent-3-enyl)decahydronaphthalen-1-one

(4aS,5S,6S,8aS)-5,8a-dimethyl-6-hydroxy-5-(3-hydroxypropyl)decahydronaphthalen-1-one-1-ethylene acetal

(4aR,5S,6S,8aR)-6-(tert-butyldimethylsilyloxy)-2-(tri-n-butylstannylmethoxymethyl)-5,8a-dimethyl-5-(4-methylpent-3-enyl)-3,,4,4a,5,6,7,8,8a-octahhydronaphthalene

3-bromo-2-methoxy-5,6-dimethyl-4H-pyran-4-one

(1R,4aR,5S,6S,8aS)-6-(tert-butyldimethylsiloxy)-5,8a-dimethyl-2-methylene-5-(4-methylpent-3-enyl)decahydronaphthalene-1-carbaldehyde