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Synthesis of a novel purine-containing heterocyclic ring system: 8,10-Dimethylindolo[2′,3′:5,6][1,2,4]triazino[4,3-f]purine-9,11(8H, 10H, 13H)-dione

✍ Scribed by Antonio Da Settimo; Giampaolo Primofiore; Federico Da Settimo; Francesca Simorini; Anna Maria Marini; Concettina La Motta; Sabrina Taliani

Publisher
Journal of Heterocyclic Chemistry
Year
2000
Tongue
English
Weight
282 KB
Volume
37
Category
Article
ISSN
0022-152X

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✦ Synopsis

Abstract

The preparation of a novel purine containing heterocyclic ring system, indolotriazinopurine, by the condensation of 8‐hydrazinotheophylline with 5‐substituted isatins via the intermediate hemiaminal and hydrazone derivatives, is described.

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## Abstract The molecular structures of the title compounds 3 and 5 were investigated by NMR and X‐ray structural methods. The NMR results suggest two equivalent halves for both molecules. The X‐ray study shows an approximate mirror plane for 3 and an approximate twofold axis for a significant port