Cyclopropenones and the Photochemical Generation of Cyclic Alkynes Therefrom
申请人:Popik Vladimir V.
公开号:US20100210854A1
公开(公告)日:2010-08-19
Cyclic alkynes (e.g., cyclooctynes such as dibenzocyclooctynes) can be photochemically generated from cyclopropenones as disclosed herein. The cyclic alkynes can be reacted (e.g., in situ) with materials having alkyne-reactive groups (e.g., azide groups in a “click” reaction). In preferred embodiments, the generation and reaction of the cyclic alkyne can proceed in the absence of a catalyst (e.g., Cu(I)). These reactions can be useful, for example, for the selective labeling of living cells that are metabolically modified with azido-containing surface monosaccharides, or for light-directed surface patterning.
Fluorodibenzocyclooctynes: A Trackable Click Reagent with Enhanced Reactivity
作者:Wei Li、Juan Zou、Shiyu Zhu、Xianxian Mao、Hongyan Tian、Xiaojian Wang
DOI:10.1002/chem.201902834
日期:2019.8.6
3‐dipolar cycloadditions, with either benzyl azide or ethyldiazoacetate, compared to conventional dibenzocyclooctyne (DIBO). In addition, FDIBOs showed unique trackable properties owing to the high NMR sensitivity of the naturally abundant 19F isotope. Biological molecules, including a monosaccharide, a peptide, and a protein, were tested with FDIBOs, and these reactions could be easily monitored by 19F NMR
Metal-Free Sequential [3 + 2]-Dipolar Cycloadditions using Cyclooctynes and 1,3-Dipoles of Different Reactivity
作者:Brian C. Sanders、Frédéric Friscourt、Petr A. Ledin、Ngalle Eric Mbua、Selvanathan Arumugam、Jun Guo、Thomas J. Boltje、Vladimir V. Popik、Geert-Jan Boons
DOI:10.1021/ja1081519
日期:2011.2.2
Although metal-free cycloadditions of cyclooctynes and azides to give stable 1,2,3-triazoles have found wide utility in chemical biology and material sciences, there is an urgent need for faster and more versatile bioorthogonal reactions. We have found that nitrile oxides and diazocarbonyl derivatives undergo facile1,3-dipolarcycloadditions with cyclooctynes. Cycloadditions with diazocarbonyl derivatives
Selective Labeling of Living Cells by a Photo-Triggered Click Reaction
作者:Andrei A. Poloukhtine、Ngalle Eric Mbua、Margreet A. Wolfert、Geert-Jan Boons、Vladimir V. Popik
DOI:10.1021/ja9054096
日期:2009.11.4
Phototriggering of the metal-free azide to acetylene cycloaddition reaction was achieved by masking the triple bond of dibenzocyclooctynes as cyclopropenone. Such masked cyclooctynes do not react with azides in the dark. Irradiation of cyclopropenones results in the efficient (Phi(355) = 0.33) and clean regeneration of the corresponding dibenzocyclooctynes, which then undergo facile catalyst-free cycloadditions with azides to give corresponding triazoles under ambient conditions. In situ light activation of a cyclopropenone linked to biotin made it possible to label living cells expressing glycoproteins containing N-azidoacetyl-sialic acid. The cyclopropenone-based phototriggered click chemistry offers exciting opportunities to label living organisms in a temporally and spatially controlled manner and may facilitate the preparation of microarrays.
[EN] METHODS INCLUDING LATENT 1,3-DIPOLE-FUNCTIONAL COMPOUNDS AND MATERIALS PREPARED THEREBY<br/>[FR] PROCÉDÉS COMPRENANT DES COMPOSÉS À FONCTION 1,3-DIPÔLE LATENTS ET MATÉRIAUX PRÉPARÉS PAR CES PROCÉDÉS