乙酸酐 、
(3R,4S)-4-[4-Hydroxy-5-((R)-7-hydroxy-chroman-3-yl)-2-methoxy-phenyl]-3-(2-hydroxy-4-methoxy-phenyl)-chroman-7-ol 在
吡啶 作用下,
以38 mg的产率得到Acetic acid 2-{(3R,4S)-7-acetoxy-4-[4-acetoxy-5-((R)-7-acetoxy-chroman-3-yl)-2-methoxy-phenyl]-chroman-3-yl}-5-methoxy-phenyl ester