Amide-controlled, one-pot synthesis of tri-substituted purines generates structural diversity and analogues with trypanocidal activity

作者：Pineda de las Infantas y Villatoro Maria J; Unciti Broceta Juan D; Contreras Montoya Rafael; Garcia Salcedo Jose A; Gallo Mezo Miguel A; Unciti Broceta Asier; Diaz Mochon Juan J

来源：Scientific Reports, 2015, 5(1): 9139.

DOI：10.1038/srep09139

A novel one-pot synthesis of tri-substituted purines and the discovery of purine analogues with trypanocidal activity are reported. The reaction is initiated by a metal-free oxidative coupling of primary alkoxides and diaminopyrimidines with Schiff base formation and subsequent annulation in the presence of large N,N-dimethylamides (e.g. N,N-dimethylpropanamide or larger). This synthetic route is in competition with a reaction previously-reported by our group(1), allowing the generation of a combinatorial library of tri-substituted purines by the simple modification of the amide and the alkoxide employed. Among the variety of structures generated, two purine analogues displayed trypanocidal activity against the protozoan parasite Trypanosoma brucei with IC50 < 5 mu M, being each of those compounds obtained through each of the synthetic pathways.

• 出版日期2015-3-16