(2R,3S,4S,5R,6S)-2-(acetoxymethyl)-6-((2-(3,4-dimethoxyphenyl)-4-oxo-4H-chromen-3-yl)oxy)tetrahydro-2H-pyran-3,4,5-triyl triacetate 在
sodium methylate 作用下,
以
甲醇 为溶剂,
以85%的产率得到2-(3,4-dimethoxyphenyl)-3-[(2S,3R,4S,5R,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxychromen-4-one