乙酸酐 、
(2R,3S,4S,2'R,3'R)-2,2'-Bis-(3,4-dimethoxy-phenyl)-3,7,5',7'-tetramethoxy-3,4,3',4'-tetrahydro-2H,2'H-[4,8']bichromenyl-3'-ol 以
吡啶 为溶剂,
以20 mg的产率得到Acetic acid (2R,3S,4S,2'R,3'R)-2,2'-bis-(3,4-dimethoxy-phenyl)-3,7,5',7'-tetramethoxy-3,4,3',4'-tetrahydro-2H,2'H-[4,8']bichromenyl-3'-yl ester