Synthesis of 6-Substituted Purines From 3,7-Dimethyl-6-methylthio-2-oxopurine

Abstract
Nucleophilic substitution of 3,7-dimethyl-6-methylthio-2-oxopurine (1) with alcoholates or carbanions of active methylene compounds affords the corresponding 6-alkoxy- or 6-alkylidene-3,7-dimethyl-2-oxopurines, respectively, in good yields.

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