5′-position () were synthesized by using the microwave-assisted one-pot tandem Staudinger/aza-Wittig/reduction reaction in good yields of 55.2–71.7%. The deacetylation of afforded compounds . HIV-1 reverse transcriptase (RT) inhibitory and antitumor activities were preliminarily evaluated with . The results showed that the new pseudonucleosides () could effectively inhibit HIV-1 RT activity, but no antitumor