Ruthenium(II)‐Catalyzed Double Annulation of Quinones: Step‐Economical Access to Valuable Bioactive Compounds
Eufrânio N. da Silva Júnior, Renato L. Carvalho, Renata G. Almeida, Luísa G. Rosa, Felipe Fantuzzi, Torben Rogge, Pedro M. S. Costa, Cláudia Pessoa, Claus Jacob, Lutz Ackermann
Abstract
Double ruthenium(II)-catalyzed alkyne annulations of quinones were accomplished. Thus, a strategy is reported that provides step-economical access to valuable quinones with a wide range of applications. C-H/N-H activations for alkyne annulations of naphthoquinones provided challenging polycyclic quinoidal compounds by forming four new bonds in one step. The singular power of the thus-obtained compounds was reflected by their antileukemic activity.
Topics & Concepts
RutheniumAlkyneAnnulationCatalysisCombinatorial chemistryChemistryDouble bondOrganic chemistryCatalytic C–H Functionalization MethodsBioactive Compounds and Antitumor AgentsSynthesis of Indole Derivatives