The first synthesis of cytotoxic (−)-taiwaniaquinone A and (−)-taiwaniaquinone F has been achieved through the intramolecular aldol condensation of a ketoaldehyde and the oxidative cleavage of an isopropylidene ketal.
通过酮醛的分子内醛缩合和异亚丙基缩酮的氧化裂解,首次合成了具有细胞毒性的 (-)-taiwaniaquinone A 和 (-)-taiwaniaquinone F。
General Access to Taiwaniaquinoids Based on a Hypothetical Abietane C7–C8 Cleavage Biogenetic Pathway
作者:Rubén Tapia、Juan J. Guardia、Esteban Alvarez、Ali Haidöur、Jose M. Ramos、Ramón Alvarez-Manzaneda、Rachid Chahboun、Enrique Alvarez-Manzaneda
DOI:10.1021/jo202163y
日期:2012.1.6
cyclopentane B ring; it is also applicable to the synthesis of the wide variety of existing taiwaniaquinoids. Utilizing this, (−)-taiwaniaquinone A, F, G, and H, (−)-taiwaniaquinol B, and (−)-dichroanone have been synthesized from (+)-abietic acid. The versatility of this strategy allows us to propose the abietane C7–C8 cleavage as a possible biosynthetic pathway to this type of rearranged diterpenes; this