Synthesis of a new heterocyclic system of 2-amino-3-cyano-5H-4,5-dihydropyrido[3′,2′:4,5]pyrrolo[1,2-<i>a</i>]indole
Abstract
Alkylation of 2-piperidinomethylene-2H-pyrrolo[1,2-a]indole-3,9-dione with dimethyl sulfate, followed by hydrolysis of the intermediate immonium salts, yielded 2-formyl derivatives, the reaction of which with substances possessing on active methylene unit leads to the formation of 2-substituted vinyl-3-oxo-9-alkoxypyrrolo[1,2-a]indoles. Cyclization of the 9-methoxy derivative yielded a new heterocyclic system of 2-amino-3-cyano-5H-4,5-dihydropyrodol[3′2′:4,5]pyrroloindoledione-4,11.
How to Cite
Tugusheva, N. Z.; Ryabova, S. Yu.; Solov'eva, N. P.; Granik, V. G. Chem. Heterocycl. Compd. 1994, 30, 793. [Khim. Geterotsikl. Soedin. 1994, 919.]
For this article in the English edition, see DOI https://doi.org/10.1007/BF01169636