Feature of Internucleotidic 2′,3′-Cyclicphosphate Intermediates During Liquid and Solid Phase Synthesis of RNA Fragments and Practical Synthesis of Octaadenylate in the Phosphoramidite Approach

Abstract
Internucleotidic cyclic phosphate intermediates were found to be hydrolyzed completely to give no 2′-5′ linkages under the usual conditions for deprotection in RNA synthesis.