Disclosed herein are phosphorothioate nucleotide analogs, such as thiophosphoramidate prodrugs and thiohosphates (including α-thiomonophosphates, α-thiodiphosphates, and α-thiotriphosphates), methods of synthesizing phosphorothioate nucleotide analogs, such as thiophosphoramidate prodrugs and thiophosphates, and methods of treating viral infections such as HCV, with the phosphorothioate nucleotide analogs, such as thiophosphoramidate prodrugs and thiophosphates.