乙酸酐 、
(3R,4S)-3-(3-Hydroxy-2,4-dimethoxy-phenyl)-4-[4-hydroxy-5-((R)-7-hydroxy-chroman-3-yl)-2-methoxy-phenyl]-chroman-7-ol 在
吡啶 作用下,
以22 mg的产率得到Acetic acid 3-{(3R,4S)-7-acetoxy-4-[4-acetoxy-5-((R)-7-acetoxy-chroman-3-yl)-2-methoxy-phenyl]-chroman-3-yl}-2,6-dimethoxy-phenyl ester