Abstract
The synthesis of the novel modified nucleoside (1) exhibiting the 1,2-propadienyl [allenyl] group at the 3′-α- position is described. The 3′-C-C bond was formed by radical reaction between triphenylprop-2-ynylstannane (2) and the 3′-bromo(iodo)-2′,3′-dideoxynucleoside derivative (3).