硫酸二甲酯 、
campneoside I 在
potassium carbonate 作用下,
以
丙酮 为溶剂,
反应 1.5h,
以15 mg的产率得到(E)-3-(3,4-Dimethoxy-phenyl)-acrylic acid (2R,3R,4R,5R,6R)-6-[2-(3,4-dimethoxy-phenyl)-2-methoxy-ethoxy]-5-hydroxy-2-hydroxymethyl-4-((2S,3R,4R,5R,6S)-3,4,5-trihydroxy-6-methyl-tetrahydro-pyran-2-yloxy)-tetrahydro-pyran-3-yl ester