4′-C-[(4-Trifluoromethyl-1H-1,2,3-triazol-1-yl)methyl]thymidine as a Sensitive 19F NMR Sensor for the Detection of Oligonucleotide Secondary Structures
摘要:
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.
4′-C-[(4-Trifluoromethyl-1H-1,2,3-triazol-1-yl)methyl]thymidine as a Sensitive 19F NMR Sensor for the Detection of Oligonucleotide Secondary Structures
摘要:
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.
4′-<i>C</i>-[(4-Trifluoromethyl-1<i>H</i>-1,2,3-triazol-1-yl)methyl]thymidine as a Sensitive <sup>19</sup>F NMR Sensor for the Detection of Oligonucleotide Secondary Structures
作者:Lotta Granqvist、Pasi Virta
DOI:10.1021/jo500326j
日期:2014.4.18
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.