Different arabinosides and ribosides, viz. Ara??DDA or 9 (1?螃漫?d??arabinofuranosyl) 1, 3?? dideazaadenine (6), Ara??NDDP or 9 (1?螃漫?d??arabinofuranosyl) 4??nitro??1, 3??dideazapurine (7), Ara??DKP or 1 (1?螃漫?d??arabinofuranosyl) diketopiperazine (8), Ribo??DDA or 9 (1?螃漫?d?? ribofuranosyl) 1, 3??dideazaadenine (9) and Ribo??NDDP or 9 (1?螃漫?d??ribofuranosyl) 4??nitro?? 1, 3??dideazapurine (10) have been synthesized as probable antiviral agents. The ...