(3S)-3-methyl-2,3-dihydrofuran

(S)-4-(tert-Butyl-dimethyl-silanyloxy)-3-methyl-butyric acid

(4R,5S)-4-allyl-5-((S)-2-methylbut-3-ynyl)-dihydrofuran-2(3H)-one

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

methyl (S)-4-(tert-butyldimethylsilyloxy)-3-methylbutanoate