The synthesis of 2'-deoxyribonucleoside triphosphates (dNTPs) either by classical triphosphorylation of nucleosides or by aqueous cross-coupling reactions of halogenated dNTPs is discussed. Different enzymatic methods for synthesis of modified oligonucleotides and DNA by polymerase incorporation of modified nucleotides are summarized, and the applications in redox or fluorescent labeling, as well as in bioconjugations and modulation of interactions of DNA with proteins, are outlined.

Institute of Organic Chemistry and Biochemistry Academy of Sciences of the Czech Republic Gilead Sciences and IOCB Research Center Flemingovo nám 2 CZ 16610 Prague 6 Czech Republic

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