Structural Simplification of Bioactive Natural Products with Multicomponent Synthesis. 3. Fused Uracil-Containing Heterocycles as Novel Topoisomerase-Targeting Agents
摘要:
After the initial discovery of antiproliferative and apoptosis-inducing properties of a camptothecin-inspired pentacycle based on a 1H-indeno[2',1':5,6]dihydropyrido[2,3-d]pyrimidine scaffold, a library of its analogues as well as their oxidized planar counterparts were prepared utilizing a practical multicomponent synthetic protocol. The synthesized compounds exhibited submicromolar to low micromolar antiproliferative potencies toward a panel of human cancer cell lines. Biochemical experiments are consistent with the dihydropyridine library members undergoing intracellular oxidation to the corresponding planar pyridines, which then inhibit topoisomerase II activity, leading to inhibition of proliferation and cell death. Because of facile synthetic preparation and promising antitopoisomerase activity, both the dihydropyridine and planar pyridine-based compounds represent a convenient starting point for anticancer drug discovery.
Graphene Oxide: A Carbocatalyst for the One-Pot Multicomponent Synthesis of 5-Aryl-1H-Indeno[2’,1’:5,6]Pyrido[2,3-d]Pyrimidine-2,4,6(3H)-Trione
作者:Hamid Reza Dehghanpour、Mohammad H. Mosslemin、Razieh Mohebat
DOI:10.3184/174751918x15161933697835
日期:2018.1
and efficient method is described for the synthesis of 5-aryl-1H-indeno[2’,1’:5,6]pyrido[2,3-d]pyrimidine-2,4,6(3H)-trione via one-pot multicomponentreaction of indane-1,3-dione, arylaldehydes and 6-aminopyrimidin-2,4(1H,3H)-dione in presence of catalytic amount of graphene oxide in water. Graphene oxide is a versatile carbocatalyst and this is the first report on its application in a pyrido[2,3-d]pyrimidine