Triazolo‐fused 3′,5′‐cyclic nucleoside analogues were synthesized by an intramolecular 1,3‐dipolar cycloaddition of nucleoside‐derived azido‐alkynes in a regio‐ and stereospecific manner. The thymine nucleoside base in these target compounds was transformed successfully into the corresponding 5‐methylcytosine component. The synthesized compounds were examined in a MAGI assay for exploring the anti‐HIV activity and in a H9 T lymphocytes assay for measuring the cell toxicity.
Triazolo‐fused 2′,3′‐cyclic nucleoside analogs were synthesized by an intramolecular 1,3‐dipolar cycloaddition of nucleoside‐derived azido alkynes in a regio‐ and stereospecific manner. The uracil base in these target compounds was successfully transformed to the corresponding cytosine. The synthesized compounds were examined in a MAGI assay for their anti‐HIV activities, and in a H9 T lymphocytes assay for their cell toxicities.
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