methyl 2,3-di-O-acetyl 4,6-dideoxy-α-D-xylo-hexopyranoside

(2S,6S)-6-hydroxymethyl-2-methoxy-5,6-dihydro-2H-pyran

(2S,6S)-2-methoxy-6-(4-methylphenylsulfonyloxy)methyl-5,6-dihydro-2H-pyran