乙酸酐 、
4-O-(3-O-allyl-β-D-galactopyranosyl)-D-arabino-hex-1-enitol 在
吡啶 作用下,
反应 12.0h,
以92%的产率得到Acetic acid (2S,3R,4S,5S,6R)-5-acetoxy-2-((2R,3S,4R)-4-acetoxy-2-acetoxymethyl-3,4-dihydro-2H-pyran-3-yloxy)-6-acetoxymethyl-4-allyloxy-tetrahydro-pyran-3-yl ester