(3aR,7S,8aS)-6-(2-((tert-butyldiphenylsilyl)oxy)ethyl)-7-methyl-3,3a,4,7,8,8a-hexahydro-2H-cyclohepta[b]furan-2-one

(S,E)-7-(tert-butyldimethylsilyloxy)-6-methylhept-2-en-4-one

(S)-3-((2S,3R)-3-allyl-5-butoxy-tetrahydrofuran-2-yl)-2-methylpropanal

(S)-3-((2S,3R)-3-allyl-5-butoxy-tetrahydrofuran-2-yl)-2-methylpropan-1-ol

(2S,3R)-3-allyl-5-butoxy-2-((S)-2-methylbut-3-ynyl)-tetrahydrofuran