The first total syntheses of ochnaflavone, an asymmetric biflavone consisting of apigenin and luteolin moieties, and the permethyl ether of 2,3,2'',3''-tetrahydroochnaflavone have been achieved. The key steps in the synthesis of ochnaflavone were the formation of a diaryl ether and ring cyclization of an ether-linked dimeric chalcone to assemble the two flavone nuclei. Optimal experimental conditions for the oxidative cyclization to form ochnaflavone were established.
对称双黄酮ochnaflavone的首个全合成已经完成,该化合物由apigenin和luteolin基团组成。同时,2,3,2'',3''-四氢ochnaflavone的四甲氧基醚也被合成。合成ochnaflavone的关键步骤是形成二芳基醚和环化合成链联二聚chalcone以组装两个黄酮核。已建立最佳的实验条件,以进行氧化环化形成ochnaflavone。