反应详情

A solution of 1-O-acetyl-2,3,5-tri-O-benzoyl-β-D-ribofuranose (426 mg, 0.84 mmol), 5-hydroxy-1-tetralone (122 mg, 0.75 mmol) and boron trifluoride diethyletherate (120 mg, 0.84 mmol, 106 μl) in dichloromethane (4 ml) was stirred at room temperature, under argon for 19 hours. Work-up as for Stage 1 in Example 1 then flash chromatography on silica gel (eluting with 2% acetone in toluene) gave the title compound as a colourless oil (308 mg of approx. 51% purity).