作者:Somepalli Venkateswarlu、Gopala K. Panchagnula、Mothukuri Bala Guraiah、Gottumukkala V. Subbaraju
DOI:10.1016/j.tet.2006.08.048
日期:2006.10
synthesized for the first time from substituted acetophenones via benzo-2(3H)-furanone in three steps. Geometrical isomers of the isoaurones were separated. The differences in the proton and carbon NMR spectra of the E- and Z-isoaurones afford a useful method for distinguishing between the two isomers. Marginalin, a metabolite of Dytiscus marginalis has been synthesized and the spectral data of the synthetic
在三个步骤中,首次通过苯并-2(3 H)-呋喃酮从取代的苯乙酮合成了一系列异金酮。分离了异金酮的几何异构体。E-和Z-异金龙的质子和碳NMR谱图的差异为区分这两种异构体提供了一种有用的方法。已合成了边缘dyscuscusalis的代谢物Marginalin,合成的E-异构体的光谱数据与天然产物的光谱数据非常吻合。通过超氧自由基(NBT)方法和异金龙12和13测定了异金龙的抗氧化活性 表现出优异的抗氧化活性。