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. Author manuscript; available in PMC: 2014 Nov 14.
Published in final edited form as: J Med Chem. 2013 Oct 28;56(21):8765–8780. doi: 10.1021/jm401232v

Scheme 3.

Scheme 3

a Synthesis of triazole nucleoside triphosphates 21

aReagents and conditions: a) 2-Chloro-4H-1,3,2-benzodioxaphosphorin-4-one, pyridine/dioxane (1:3), rt, 15 min; b) (Bu3HN)2H2P2O7, Bu3N, DMF, rt, 15 min; c) I2, pyridine/H2O, NH3 (aq), rt, 1 h, Na-ion exchange, 33-43%.