1: 1.) 1,8-diazabicyclo<5.5.0>undec-7-ene (DBU) / 1.) THF, from 0 deg C to RT, 1 h, 2.) THF, RT, 6 h 2: 83 percent / pyridinium chlorochromate (PCC) / CH2Cl2 / 1.5 h / Ambient temperature 3: 58 percent / tributyltin hydride (TBTH), 2,2'-azobisisobutyronitrile (AIBN) / toluene / 0.83 h / 110 °C View Scheme

1: 1.) 1,8-diazabicyclo<5.5.0>undec-7-ene (DBU) / 1.) THF, from 0 deg C to RT, 1 h, 2.) THF, RT, 6 h 2: 83 percent / pyridinium chlorochromate (PCC) / CH2Cl2 / 1.5 h / Ambient temperature 3: 58 percent / tributyltin hydride (TBTH), 2,2'-azobisisobutyronitrile (AIBN) / toluene / 0.83 h / 110 °C 4: 72 percent / D-glucose, 1 M NaOH / H2O / 72 h / Ambient temperature; baker's yeast View Scheme