(2S,3S,4S)-3,4-dihydroxy-4-hydroxymethyl-2-((p-toluenesulfonyloxy)methyl)tetrahydrofuran

(2S,3S,4R)-3,4-dihydroxy-4-hydroxymethyl-3-O,O-(hydroxymethyl)-(1,1,3,3-tetraisopropyldisiloxane-1,3-diyl)-2-((p-toluenesulfonyloxy)methyl)tetrahydrofuran

(2S,3S,4R)-3-hydroxy-4-hydroxymethyl-4-O-methoxalyloxy-3-O,O-(hydroxymethyl)-(1,1,3,3-tetraisopropyldisiloxane-1,3-diyl)-2-((p-toluenesulfonyloxy)methyl)tetrahydrofuran