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A novel and efficient method for the preparation of nucleoside 5′-tetraphosphates has been developed by coupling nucleoside 5′-phosphoropiperidates with triphosphate reagent in the presence of 4,5-dicyanoimidazole (DCI) activator. Further coupling of the nucleoside 5′-tetraphosphates with nucleoside 5′-phosphoropiperidates via the P(V)N activation strategy provided a reliable synthetic method for...
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