[(2R,3aS,5R,6aS)-5-(tert-butyldimethylsilanyloxymethyl)hexahydrofuro[3,2-b]furan-2-yl]methanol

(2R,3aS,5R,6aS)-5-(tert-butyldimethylsilanyloxymethyl)hexahydrofuro[3,2-b]furan-2-carbaldehyde

acetic acid (2S,3S,5R)-2-allyl-5-(tert-butyldimethylsilanyloxymethyl)tetrahydrofuran-3-ol