Synthesis of Mimics to 5-(2″-thienyl)-2′,3′-β-Dideoxyuridine Triphosphate

A series of 5′-amido derivatives of 5-(2″-thienyl)-2′,3′,5′-β-trideoxyuridine were prepared. The compounds were tested for their inhibition of cellular DNA polymerase α and α HIV-RT. The succinic fumaric and maleic acid derivatives of 5-(2″-thienyl)-2′,3′,5′-β-trideoxyuridine were investigated. None of the compounds inhibited HIV-RT. The fumaric acid derivative inhibited DNA pol α with IC5033 μg ml−1. The succinic acid derivative was about half as active with IC5076 μg ml−1. The 5′-N-acyl derivatives also were structurally compared to the monomethyl ester of the triphosphate using the Sybyl program.