N1- and C6-substituted adenines: a regioselective and efficient synthesis
作者:Nádia Senhorães、A. Luísa Costa、Deolinda I. Silva、M. Fernanda Proença、Alice M. Dias
DOI:10.1016/j.tet.2013.09.063
日期:2013.11
New and efficient methods for the synthesis of N1-substituted and C6-substitued adenines were developed from the easily accessible 5-aminoimidazole-4-carboxamidines. Condensation of these compounds with triethyl orthoformate led to the selective synthesis of the N1-substituted adenines. Regioselective preparation of C6-substituted adenines could be accomplished when the same precursors were combined