2'-O or 3'-O-propargylated adenosines and ribothymidines were used as click targets for cross-linking of oligonucleotides with aliphatic and aromatic azides. The cross-link generates a sugar modification at the 2'-O-ligation site. Inexpensive ribonucleosides were used as starting materials. Cross-linking of oligonucleotides was performed at internal or terminal positions. Hybridization of homodimers with two complementary single strands resulted in stable ligated DNA duplexes.
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| http://dx.doi.org/10.1021/jo300421p | DOI Listing |
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