Acetic acid (2S,3R,4S,5R,6R)-3-acetoxy-6-hydroxymethyl-2-methoxy-5-((2S,3R,4S,5R,6R)-3,4,5-triacetoxy-6-acetoxymethyl-tetrahydro-pyran-2-yloxy)-tetrahydro-pyran-4-yl ester 、
氟代四乙酸 beta-d-吡喃葡萄糖酯 在
三氟化硼乙醚 作用下,
以72%的产率得到Acetic acid (2S,3R,4S,5R,6R)-3-acetoxy-2-methoxy-5-((2S,3R,4S,5R,6R)-3,4,5-triacetoxy-6-acetoxymethyl-tetrahydro-pyran-2-yloxy)-6-((2R,3R,4S,5R,6R)-3,4,5-triacetoxy-6-acetoxymethyl-tetrahydro-pyran-2-yloxymethyl)-tetrahydro-pyran-4-yl ester