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. 2023 Apr 27;11:1161462. doi: 10.3389/fchem.2023.1161462

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Copyright © 2023 Sabat, Katkevica, Pajuste, Flamme, Stämpfli, Katkevics, Hanlon, Bisagni, Püntener, Sladojevich and Hollenstein.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Synthesis of (A) DNA and (B) LNA nucleoside triphosphates one to seven bearing 3′-O-blocking groups. Reagents and conditions: 1) 2-chloro-1,3,2-benzodioxaphosphorin-4-one, pyridine, dioxane, rt, 1h; 2) (nBu₃NH)₂H₂P₂O₇, DMF, nBu₃N, rt, 1h; 3) I₂, pyridine, H₂O, rt, 30 min.