Abstract
Incorporation of modified nucleosides with a flexible universal linker is of great value for post-synthetic modification of nucleic acids. Thus, C8-alkynyl- and alkylamino substituted 2′-deoxyguanosines were synthesized for the first time and incorporated into short oligonucleotide sequences. The preference for syn conformation of these C8-substituted 2′-deoxyguanosines and the stability of the duplexes were discussed. The stabilizing effect of Z-DNA has also been examined.
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