A Fluorogenic Probe for the Catalyst-Free Detection of Azide-Tagged Molecules
摘要:
Fluorogenic reactions in which non- or weakly fluorescent reagents produce highly fluorescent products can be exploited to detect a broad range of compounds including biomolecules and materials. We describe a modified dibenzocyclooctine that under catalyst-free conditions undergoes fast strain promoted cycloadditions with azides to yield strongly fluorescent triazoles. The Cycloaddition products are more than 1000-fold brighter compared to the Starting cyclooctyne, exhibit large Stokes shift,. and can be excited above 350 nm, which is required for many applications. Quantum mechanical: calculations indicate that the fluorescence increase upon triazole formation is due to large differences in oscillator strengths of the S-0 <-> S-1 transitions in the planar C-2v-symmetric starting material compared to the symmetry broken and nonplanar.cycloaddition products. The new fluorogenic probe was successfully employed for labeling of proteins modified by an azide moiety.
Sydnone Reporters for Highly Fluorogenic Copper-Free Click Ligations
作者:Camille Favre、Lucie de Cremoux、Jerome Badaut、Frédéric Friscourt
DOI:10.1021/acs.joc.7b03004
日期:2018.2.16
Bioorthogonal fluorescent turn-on reactions are attractive for the sensitive real-time detection of a variety of phenomena including bioconjugation, chemical reactivity, and material assembly. Herein we describe the use of 3,4-disubstituted sydnones, a singular class of mesoionic dipoles, for highly fluorescent turn-on copper-freeclick cycloadditions with the fluorogenic dibenzocyclooctyne Fl-DIBO
The synthesis and fluorescence profile of novel thalidomide analogues
作者:Sven S. Kampmann、Brian W. Skelton、George C. Yeoh、Lawrence J. Abraham、Nigel A. Lengkeek、Keith A. Stubbs、Charles H. Heath、Scott G. Stewart
DOI:10.1016/j.tet.2015.08.036
日期:2015.10
Herein we describe the synthesis of various simple N-alkyl thalidomide derivatives in order to determine their fluorescence excitation and emission profile. Following this, a series of more complex fragments were attached through a Huisgen 1,3-dipolar cycloaddition providing a more diverse fluorescence profile. A thalidomide azide derivative was also found to be particularly reactive in a copper-free
Blue ‘turn-on’ fluorescent probes for the direct detection of free radicals and nitric oxide in Pseudomonas aeruginosa biofilms
作者:Mina Barzegar Amiri Olia、Athanasios Zavras、Carl H. Schiesser、Stefanie-Ann Alexander
DOI:10.1039/c5ob02441b
日期:——
Two novel cell-permeable and bacteria-compatible ‘turn-on’ fluorescent probes, designed to be compatible in a multi-dye system and to fluoresce in the blue region exhibiting emission maxima of 440–490 nm, were synthesized. The profluorescent nitroxide probe (11) was developed to visualize and quantify freeradical and redox processes, and the Cu(II)-complexed coumarin-based probe (16a) was developed
Utilizing an iron(<scp>iii</scp>)-chelation masking strategy to prepare mono- and bis-functionalized aerobactin analogues for targeting pathogenic bacteria
作者:Yu-Hin Ho、Sheng-Yang Ho、Cheng-Chih Hsu、Jiun-Jie Shie、Tsung-Shing Andrew Wang
DOI:10.1039/c7cc05197b
日期:——
We present a facile functionalization of native siderophoresviaan Fe(iii)-chelation masking strategy to prepare fluorophore conjugates for targeting pathogenic bacteria.
A Fluorogenic Probe for the Catalyst-Free Detection of Azide-Tagged Molecules
作者:Frédéric Friscourt、Christoph J. Fahrni、Geert-Jan Boons
DOI:10.1021/ja309000s
日期:2012.11.14
Fluorogenic reactions in which non- or weakly fluorescent reagents produce highly fluorescent products can be exploited to detect a broad range of compounds including biomolecules and materials. We describe a modified dibenzocyclooctine that under catalyst-free conditions undergoes fast strain promoted cycloadditions with azides to yield strongly fluorescent triazoles. The Cycloaddition products are more than 1000-fold brighter compared to the Starting cyclooctyne, exhibit large Stokes shift,. and can be excited above 350 nm, which is required for many applications. Quantum mechanical: calculations indicate that the fluorescence increase upon triazole formation is due to large differences in oscillator strengths of the S-0 <-> S-1 transitions in the planar C-2v-symmetric starting material compared to the symmetry broken and nonplanar.cycloaddition products. The new fluorogenic probe was successfully employed for labeling of proteins modified by an azide moiety.