Addition of lithiated 9-deazapurine derivatives to a carbohydrate cyclic imine: Convergent synthesis of the aza-C-nucleoside immucillins

Means have been developed for the synthesis and addition of 9-deaza-9-lithi opurine derivatives to the carbohydrate-derived cyclic imine 6 in facile co nvergent syntheses of biologically active aza-C-nucleosides.