3-O-benzoyl-6-deoxy-6-diethylphosphono-1,2-O-isopropylidene-D-allofuranose 、
乙酸酐 在
硫酸 作用下,
以
溶剂黄146 为溶剂,
生成 1,2,5-tri-O-acetyl-3-O-benzoyl-6-deoxy-6-diethylphosphono-(5S)-β-D-ribohexofuranose 、 1,2,5-tri-O-acetyl-3-O-benzoyl-6-deoxy-6-diethylphosphono-(5S)-α-D-ribohexofuranose