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  • Postsynthetic conjugation of RNA to carboxylate and dicarboxylate molecules.

Postsynthetic conjugation of RNA to carboxylate and dicarboxylate molecules.

Nucleosides, nucleotides & nucleic acids (2015-10-01)
Yossi Shemesh, Eylon Yavin
ABSTRACT

Carboxylates and dicarboxylates are important phosphate mimics. Herein, we present a simple synthetic route for the preparation of RNA carboxylate/dicarboxylate conjugates, starting from suitably protected NH2- and COOH-containing molecules that are coupled to the RNA on the solid support. The key point in our method was the use of trimethylsilylethanol (TMSE-OH) protecting group, which is removed simultaneously with the silyl protecting group on the 2'-OH of the RNA ribose (e.g. t-Butyldimethylsilyl) during the final RNA cleavage/deprotection steps. The usefulness of this method was demonstrated by preparing different RNA-phosphate mimics oligos.

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