Synthesis of novel fluorinated coumarins: Excellent UV-light excitable fluorescent dyes
作者:Wei-Chuan Sun、Kyle R Gee、Richard P Haugland
DOI:10.1016/s0960-894x(98)00578-2
日期:1998.11
Two new fluorinated fluorescent dyes, 6,8-difluoro-7-hydroxy-4-methylcoumarin (Marina Blue(TM)) and 3-carboxy-6,8-difluoro-7-hydroxycoumarin (Pacific Blue(TM)), exhibit excellent photophysical properties among a series of novel fluorinated 7-hydroxycoumarins. Most of these fluorinated coumarins have quantum yields (0.63 to 0.89) equal to or higher than that of the parent compound (0.63), which, in combination with their lower pK(a)s and higher photostability, make them superior fluorescent dyes fbr use as reporter molecules in biological systems. (C) 1998 Elsevier Science Ltd. All rights reserved.
US5830912A
申请人:——
公开号:US5830912A
公开(公告)日:1998-11-03
Derivatives of 6,8-difluoro-7-hydroxycoumarin
申请人:Molecular Probes, Inc.
公开号:US05830912A1
公开(公告)日:1998-11-03
The present invention comprises 6,8-difluoro-7-hydroxycoumarins and derivatives of 6,8-difluoro-7-hydroxycoumarins, including reactive dyes, dye-conjugates and enzyme substrates. These fluorine-substituted fluorescent dyes typically possess greater photostability and lower pH sensitivity in the physiological pH range than their nonfluorinated analogs, exhibit less fluorescence quenching when conjugated to a substance, possess absorption and emission spectra that closely match those of their nonfluorinated analogs, and also exhibit higher quantum yields than their nonfluorinated analogs.
Synthesis and evaluation of sensitive coumarin-based fluorogenic substrates for discovery of α-<i>N</i>-acetyl galactosaminidases through droplet-based screening
作者:Hong-Ming Chen、Seyed Amirhossein Nasseri、Peter Rahfeld、Jacob F. Wardman、Maurits Kohsiek、Stephen G. Withers
DOI:10.1039/d0ob02484h
日期:——
part of a search for a substrate for droplet-based microfluidic screening assay of α-N-acetylgalactosaminidases, spectral and physical characteristics of a series of coumarin derivatives were measured. From among these a new coumarin-based fluorophore, Jericho Blue, was selected as having optimal characteristics for our screen. A reliable method for the challenging synthesis of coumarin glycosides