3‐(6‐Alkylaminopurin‐9‐yl)‐2,3‐dideoxy‐D‐threo‐pentopyranoses 3 were prepared by condensation of unprotected 2‐deoxy‐D‐ribose (2) with N6‐alkyladenines 1 in a phosphorus pentoxide reagent mixture. Reduction of the pentoses 3 gave the corresponding 3‐(6‐alkylaminopurin‐9‐yl)‐2,3‐dideoxy‐D‐threo‐pentitols 4. The structures of 3 and 4 were determined by 13C nmr, 1H nmr and 2D 1H nmr (COSY).

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