Monoglycosyl, diglycosyl, and dinucleoside methylenediphosphonates: direct synthesis and antiviral activity

A direct and general access to d-glycosyl 3-, 5-, or 6-methylenediphosphonates, di-d-glycosyl 1,5-, 3,5-, 3,6-, 5,5-, or 6,6-methylenediphosphonates and dithymidine 3′,5′-methylenediphosphonate is described. The method involves the one-pot alkylidenediphosphorylation of glycosyl or thymidine derivatives. No antiviral activity was detected against a panel of RNA and DNA viruses.

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