乙酸酐 、
1,6-anhydro-3-C-[(1R)-2,6-anhydro-D-glycero-D-gulo-heptitol-1-C-yl]-3,4-dideoxy-β-D-arabino-hexopyranose 在
4-二甲氨基吡啶 吡啶 作用下,
以83%的产率得到2-O-acetyl-1,6-anhydro-3,4-dideoxy-3-C-[(1R)-2,6-anhydro-D-glycero-D-gulo-heptitol-1-C-yl]-β-D-arabino-hexopyranose