trans,trans-3,5-dibenzoyloxy-r-4-tert-butoxycarbonyl-4-cyanotetrahydrothiopyran

5-(2,4-di-O-benzoyl-3-tert-butoxycarbonyl-3-cyano-3-deoxy-β-D-xylo-pentopyranosyl)-3-ethoxycarbonyl-2-methylfuran

trans,trans-3,5-dibenzoyloxy-r-4-tert-butoxycarbonyl-4-cyanotetrahydropyran

3-acetyl-5-(2,4-di-O-benzoyl-3-tert-butoxycarbonyl-3-cyano-3-deoxy-β-D-xylo-pentopyranosyl)-2-methylfuran