A novel type of nucleotide analogues, the 2′,3′-O-(1-diethylphosphono)alkylidene derivatives of ribonucleosides was prepared by redox reaction of diethyl chlorophosphite with various nucleoside orthoesters. Some of these compounds undergo interesting rearrangements when treated with nucleophiles. The configuration of the title compounds was determined by 2D-ROESY experiments. Biological activity of
Inhibition of human thymidine phosphorylase by conformationally constrained pyrimidine nucleoside phosphonic acids and their “open-structure” isosteres
A series of conformationally constrained uridine-based nucleoside phosphonic acids containing annealed 1,3-dioxolane and 1,4-dioxane rings and their “open-structure” isosteres were synthesized and evaluated as potential multisubstrate-like inhibitors of the human recombinant thymidine phosphorylase (TP, EC 2.4.2.4) and TP obtained from peripheral blood mononuclear cells (PBMC). From a large set of
Redox reaction of chlorodiethylphosphite with nucleoside orthoesters results in efficient synthesis of 2′, 3′- or 3′, 5′-O-((1-diethylphosphono)aralkyl)methylene derivatives of nucleosides as a novel type of isopolar phosphonate-based nucleotide analogues. The configuration of products was determined by 2D-ROESY NMR experiments.