Generation of Profluorescent Isoindoline Nitroxides Using Click Chemistry
作者:Jason C. Morris、John C. McMurtrie、Steven E. Bottle、Kathryn E. Fairfull-Smith
DOI:10.1021/jo200613r
日期:2011.6.17
Novel profluorescent nitroxides bearing a triazole linker between the coumarin fluorophore and an isoindolinenitroxide were prepared in good yields using the copper-catalyzed azide–alkyne 1,3-dipolar cycloaddition reaction (CuAAC). Nitroxides containing 7-hydroxy and 7-diethylamino substitution on their coumarin rings displayed significant fluorescence suppression, and upon reaction with methyl radicals
Noncovalent spin-labeling of RNA: the aptamer approach
作者:Subham Saha、Thilo Hetzke、Thomas F. Prisner、Snorri Th. Sigurdsson
DOI:10.1039/c8cc05597a
日期:——
In the first example of site-directed spin-labeling of unmodified RNA, a pyrrolidine-nitroxide derivative of tetramethylrosamine (TMR) was shown to bind with high affinity to the malachite green (MG) aptamer, as determined by continuous-wave (CW) electron paramagnetic resonance (EPR), pulsed electron–electron double resonance (PELDOR) and fluorescence spectroscopies.
The Synthesis and Physical Properties of Novel Polyaromatic Profluorescent Isoindoline Nitroxide Probes
作者:Kathryn E. Fairfull-Smith、Steven E. Bottle
DOI:10.1002/ejoc.200800597
日期:2008.11
New profluorescent mono- and di-isoindoline nitroxides (5, 11, 16 and 19) containing 9,10-diphenylanthracene and 9,10-bis(phenylethynyl)anthracene structural cores were synthesised by palladium-catalysed Suzuki and Sonogashira couplings. These nitroxide-fluorophore probes possess strongly suppressed fluorescence, even in the presence of only one nitroxide radical. Upon reduction, or reaction with other
BODIPY‐Based Profluorescent Probes Containing
<i>Meso</i>
‐ and β‐Substituted Isoindoline Nitroxides
作者:Jesse P. Allen、Michael C. Pfrunder、John C. McMurtrie、Steven E. Bottle、James P. Blinco、Kathryn E. Fairfull‐Smith
DOI:10.1002/ejoc.201601280
日期:2017.1.18
for tissue (600 - 1300 nm). Herein, we describe the synthesis of optically distinct BODIPY-based profluorescent probes bearing meso- and β-substituted isoindolinenitroxides and their corresponding methoxyamine derivatives. These profluorescent nitroxide probes possess strongly suppressed fluorescence, which can be revealed upon reduction or reaction with other radicals. Examination of the pentafluorophenylhydrazine