ortho‐Directed Metallation of π‐Deficient Heterocycles in Connection with Palladium‐Catalyzed Biaryl Cross‐Coupling — Synthesis of Marine Alkaloids of the Pyridoacridine Series

Connection between ortho-directed metallation of π-deficient heterocycles and Suzuki cross-coupling reactions provides a very efficient and fruitful strategy to polycyclic molecules of biological interest. The methodology is used to synthesize alkaloids or precursors and analogues of natural compounds of the pyrido[2,3,4-k,l]acridine series.Key words: marine alkaloids, pyrido[2,3,4-k,l]acridines, metallation, cross-coupling.