Divergent and concise total syntheses of dihydrochalcones and 5-deoxyflavones recently isolated from Tacca species and Mimosa diplotricha
作者:Tze Han Sum、Tze Jing Sum、Jamie E. Stokes、Warren R.J.D. Galloway、David R. Spring
DOI:10.1016/j.tet.2015.02.017
日期:2015.7
report the concise and divergent total syntheses of several naturally occurring dihydrochalcones and 5-deoxyflavones from readily available starting materials. The divergent strategy is based around manipulation of a common chalcone scaffold and features application of Algar–Flynn–Oyamada oxidation and benzoquinone C–H activation methodologies. These are the first reported total syntheses of these biologically
二氢查耳酮和5-脱氧黄酮是具有各种生物学上令人感兴趣的特性的化合物类型。在这里,我们报道了几种天然存在的二氢查耳酮和5-脱氧类黄酮从容易获得的起始原料中的简明和不同的总合成。不同的策略基于对普通查尔酮骨架的操作,并以Algar-Flynn-Oyamada氧化和苯醌CHH活化方法为特色。这些是这些生物学上有趣的化合物的首次报道的全合成,其简明而灵活的途径应易于将来的类似物产生。此外,该工作提供了发散合成在天然产物文库的方便和分步经济制备中的效用的例证。