CYCLOPROPENONES AND THE PHOTOCHEMICAL GENERATION OF CYCLIC ALKYNES THEREFROM
申请人:POPIK VLADIMIR V.
公开号:US20130164803A9
公开(公告)日:2013-06-27
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.
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.
US8426649B2
申请人:——
公开号:US8426649B2
公开(公告)日:2013-04-23
US8541625B2
申请人:——
公开号:US8541625B2
公开(公告)日:2013-09-24
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.