[Synthesis of oligodeoxyribonucleotide derivatives, containing perfluoroarylazide group at C8-atom of deoxyadenosine and their use in photomodification of DNA fragments].
1999
Heptadeoxynucleotides were obtained that contained an aliphatic amino group in position 8 of the deoxyadenosine residue: ALNH2 CTTTCT, CTCALNH2 CTT, and ACACTCALNH2 where L = NH(CH2)n, n = 3, 5, or 7. A 4-azidotetrafluorobenzoyl residue was attached to the amino group in the oligonucleotides, and photomodification of a DNA target by the resulting reagents was carried out. It was shown that the length of the spacer influences the photomodification extent of the target; a spacer with n = 5 is optimum. The maximum modification extent (65%) was reached when a reagent containing a photoreactive group at the 5'-terminal deoxyadenosine residue was used.
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