[EN] TRICYCLIC COMPOUNDS AND THEIR USE AS PHOSPHODIESTERASE INHIBITORS [FR] COMPOSÉS TRICYCLIQUES ET LEUR UTILISATION EN TANT QU'INHIBITEURS DE LA PHOSPHODIESTERASE
[Graphics]A norbornene-mediated palladium-catalyzed sequence is described in which an alkyl-aryl bond and an aryl-heteroaryl bond are formed in one reaction vessel. The aryl-heteroaryl bond-forming step occurs via a direct arylation reaction. A number of six-, seven-, and eight-membered ring-annulated indoles, pyrroles, pyrazoles, and azaindoles were synthesized from the corresponding bromoalkyl azole and an aryl iodide.
Yang, Zhi; Fu, Decai; Shao, Ruimin, Journal of the Indian Chemical Society, 2003, vol. 80, # 8, p. 790 - 791