(2S,3R,4S)-3,4-Bis-benzyloxymethyl-oxetane-2-carboxylic acid methyl ester

((3aR,5S,6R,6aR)-5-Hydroxymethyl-2,2-dimethyl-tetrahydro-furo[2,3-d][1,3]dioxol-6-yl)-methanol

(3R,4S,5S)-4,5-Bis-benzyloxymethyl-3-hydroxy-dihydro-furan-2-one