A convenient synthesis of 8-alkyl- and 8-alkylthio-2-(4-pyridyl)adenines
Several 8-alkyl-2-(4-pyridyl)adenine analogs 5 were prepared by reacting 4,5,6-triaminopyrimidine 4 with acid anhydrides, acids or dimethylformamide dimethyl acetal. 8-Mercapto-2-(4-pyridyl)-adenine (6), prepared by treating 4 with O-potassium O-ethyl dit