6-Aryl-4-amino-pyrimido[4,5-b]indole 2 '-deoxyribonucleoside triphosphates (benzo-fused 7-deaza-dATP analogues): Synthesis, fluorescent properties, enzymatic incorporation into DNA and DNA-protein binding study
2016
Abstrakt
Four 6-substituted 4-amino-pyrimido[4,5-b]indole 2'-deoxyribonucleoside triphosphates (dA(BX)TPs) were prepared by glycosylation of 4,6-dichloropyrimidoindole followed by ammonolysis, cross-coupling and triphosphorylation. They were found to be moderate to good substrates for DNA polymerases in primer extension.
They also exerted fluorescence with emission maxima 335-378 nm. When incorporated to oligonucleotide probes, they did not show significant mismatch discrimination but the 6-benzofuryl 4-amino-pyrimido[4,5-b]indole nucleotide displayed a useful sensitivity to protein binding in experiment with SSB protein.