ChemInform Abstract: A Novel Route to Isoquinoline[2,1‐g][1,6]naphthyridine, Pyrazolo[5,1‐a]isoquinoline and Pyridazino[4′,5′:3,4]pyrazolo[5,1‐a]isoquinoline Derivatives with Evaluation of Antitumor Activities.

Abstract Routes towards the synthesis of the title compounds are described from isoquinoline derivatives.