Abstract
Although sulfenyl groups as protectors of heterocyclic amines of nucleosides appeared satisfactory during the synthesis of DNA and RNA via the phosphotriester approach, their usefulness in automated synthesis of oligonucleotides using phosphoramidite chemistry has not been investigated. Herein, we examined the stability and efficiency of 2-nitrophenylsulfenyl- and tritylsulfenyl-nucleosides upon the conditions applied in oligonucleotide synthesis by the phosphoramidite approach. This article is dedicated to the memory of Professor Tsujiaki Hata
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