Abstract
This unit describes the detailed procedure in five parts for the synthesis of the C8-2'-deoxyguanosine-3-aminobenzanthrone adduct located in a desired site in an oligonucleotide. The synthesis of the protected 2'-deoxyguanosine, O6 -benzyl-N2 -DMTr-3'-5'-bisTBDMS-C8-Br-2'-deoxyguanosine, is described in the first part. The synthesis of the reduced carcinogen 3-aminobenzanthrone is detailed in part two. The third part outlines the key step of the adduct formation between the reduced carcinogen and the protected nucleoside by a palladium-catalyzed cross coupling reaction. The final two parts describe phosphoramidite synthesis from the nucleoside-carcinogen adduct followed by its site-specific incorporation into DNA by solid-phase oligonucleotide synthesis. The adducted oligonucleotides are purified by reversed-phase HPLC and characterized by mass spectrometry. © 2017 by John Wiley & Sons, Inc.
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