10.1007/bf01169255
The study presents a novel method for synthesizing N2-substituted guanines, which are important in the creation of biologically active materials. The researchers used 2-chloro-7-benzylhypoxanthine as the starting material and reacted it with various amines, including primary and secondary aliphatic, aromatic, and alicyclic amines, to produce N2-substituted 7-benzylguanines. These intermediates were then subjected to palladium-catalyzed hydrogenation to remove the benzyl group, yielding the final N2-substituted guanines. The synthesized compounds include N2-methylguanine, N2-phenylguanine, and N2-dimethylguanine, among others. The method is advantageous due to the availability of starting materials and the relatively high yields of the final products, making it a potentially useful approach for the preparation of these biologically significant compounds.