Synthesis 2011(17): 2724-2732  
DOI: 10.1055/s-0030-1260104
SPECIALTOPIC
© Georg Thieme Verlag Stuttgart ˙ New York

Oligonucleotide Conjugates by Means of Copper-Free Click Chemistry - Expanding the Repertoire of Strained Cyclooctyne Phosphoramidites

Pieter van Delft, Evert van Schie, Nico J. Meeuwenoord, Herman S. Overkleeft, Gijsbert A. van der Marel*, Dmitri V. Filippov*
Leiden Institute of Chemistry, Leiden University, PO Box 9502, 2300 RA Leiden, The Netherlands
Fax: +31(71)5274307; e-Mail: filippov@chem.leidenuniv.nl; e-Mail: marel_g@chem.leidenuniv.nl;
Further Information

Publication History

Received 7 April 2011
Publication Date:
08 July 2011 (online)

Abstract

A set of four phosphoramidite building blocks containing a strained dibenzocyclooctyne moiety is reported, including one example equipped with a cleavable disulfide linker. Application of these amidites in solid-phase oligonucleotide synthesis yields either 5′- or 3′-cyclooctyne-modified nucleic acids. The strained cyclooctyne-bearing oligonucleotides are used in rapid and clean conjugation reactions with azide-containing (bio)molecules.