Carbolines. 14. Synthesis of 5-azaellipticine

3-Acetyl-4-methylaminopyridine was obtained by cyanation of 3-acetylpyridine ethyleneketal N-oxide and subsequent chemical transformations of the nitrile group. Condensation of this product with oxindole led to the synthesis of 5H-5,11-dimethylindolo [3,2-j]-1,4-naphthyridine — the aza analog of the alkaloid ellipticine.See [1] for communication 13.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 9, pp. 1211–1214, September, 1982.