Cycloadditionof ()-1,1,4-trimethaxy-1,3-butadiene (1) to naphthoquinones affords regiospecific syntheses of derivatives of 1,4-dihydroxyanthraquinone including the mould metabolites helminthosporin (21) and cynodontin (22).
将()-1,1,4-
三甲氧基-
1,3-丁二烯(1)环加成
萘醌可提供1,4-二羟基
蒽醌衍
生物的区域特异性合成,包括霉菌代谢产物helminthosporin(21)和cynodondontin(22)。