Synthesis ofω-substituted 3-alkylorotic acids

3-(-Phthalimidoalkyl)-5-carbethoxymethylenehydantoins were synthesized by the reaction of-phthalimidoalkylureas with ethyl oxalacetate and then converted to 3-(-aminoalkyl)orotic acids. Condensation of the latter with 6-chloropurine yielded 3-[-(6-purinylamino)alkyljorotic acids.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 3, pp. 397–399, March, 1971.