6-O-acetyl-2,3,4-tri-O-benzyl-α-D-glucopyranosyl bromide 、
diacetone-D-glucose 在
2,6-二叔丁基吡啶 、
silver trifluoromethanesulfonate 作用下,
以47%的产率得到[(2R,3R,4S,5R,6R)-6-[[(3aS,5S,6R,6aS)-5-[(4S)-2,2-dimethyl-1,3-dioxolan-4-yl]-2,2-dimethyl-3a,5,6,6a-tetrahydrofuro[2,3-d][1,3]dioxol-6-yl]oxy]-3,4,5-tris(phenylmethoxy)oxan-2-yl]methyl acetate