乙酸酐 、
(-)-2,3-dihydro-9-O-β-D-glucosyloxy-2-isopropenyl-7H-furo<3,2-g> <1>benzopyran-7-one 在
吡啶 作用下,
生成 Acetic acid (2S,3R,4S,5R,6R)-4-acetoxy-6-acetoxymethyl-5-(1-hydroxy-vinyloxy)-2-((R)-2-isopropenyl-7-oxo-2,3-dihydro-7H-furo[3,2-g]chromen-9-yloxy)-tetrahydro-pyran-3-yl ester