Abstract
Novel modified cytosine analogs bearing phosphodiester/thiophosphodiester functionality were synthesized. The interactions between different metal ions and modified cytosine-cytosine base-pairs in DNA duplexes were investigated by UV-melting experiments. The thiophosphodiester modification binds to the Ag(I) ions strongly compared to the phosphodiester counterpart as examined in ESI-MS spectra as well.
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