A tracelesssynthesis of 1,3-diketones has been achieved through enamine methodology from solid-phase organic synthesis. Thus, piperazine served as a linker for this traceless cleavage of β-diketones from solid support.
Tetrahydroxanthones by Sequential Pd-Catalyzed C−O and C−C Bond Construction and Use in the Identification of the “Antiausterity” Pharmacophore of the Kigamicins
作者:Penelope A. Turner、Ellanna M. Griffin、Jacqueline L. Whatmore、Michael Shipman
DOI:10.1021/ol103103n
日期:2011.3.4
Readily available C-acylated cycloalkanones undergo efficient Pd catalyzed ring closure/cross-coupling providing 7-substituted tetrahydroxanthones in a single operation. One of the synthesized derivatives (depicted) is shown to selectively kill pancreatic cancer (PANC-1) cells under conditions of nutrient deprivation indicating that the tetrahydroxanthone is responsible, in part, for the “antiausterity”