A1 Journal article – refereed
4 '-C-[(4-Trifluoromethyl-1H-1,2,3-triazol-1-yl)methyl]thymidine as a Sensitive F-19 NMR Sensor for the Detection of Oligonucleotide Secondary Structures




List of Authors: Lotta Granqvist, Pasi Virta
Publisher: AMER CHEMICAL SOC
Publication year: 2014
Journal: Journal of Organic Chemistry
Journal name in source: JOURNAL OF ORGANIC CHEMISTRY
Journal acronym: J ORG CHEM
Volume number: 79
Issue number: 8
Number of pages: 8
ISSN: 0022-3263

Abstract


4'-C-[(4-Trifluoromethyl-1H-1,2,3-triazol-1-yl)methyl]thymidine was synthesized and incorporated as a phosphoramidite into oligonucleotide sequences. Its applicability as a sensor for the F-19 NMR spectroscopic detection of DNA and RNA secondary structures was demonstrated. On DNA, the F-19 NMR measurements were focused on monitoring of duplex-triplex conversion, for which this fluorine-labeled 2'-deoxynucleoside proved to be a powerful sensor. This sensor seemingly favors DNA, but its behavior in the RNA environment also turned out to be informative. As a demonstration, invasion of a 2'-O-methyl oligoribonucleotide into an RNA hairpin model (HIV-1 TAR) was monitored by F-19 NMR spectroscopy. According to the thermal denaturation studies by UV spectroscopy, the effect of the 4'-C-(4-trifluoromethyl-1H-1,2,3-triazol-1-yl)methyl moiety on the stability of these DNA and RNA models was marginal.



Last updated on 2019-29-01 at 20:11