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Journal articles
Design and Synthesis of a 4-Nitrobromobenzene Derivative Bearing an Ethylene Glycol Tetraacetic Acid Unit for a New Generation of Caged Calcium Compounds with Two-Photon Absorption Properties in the Near-IR Region and Their Application in Vivo
Abstract : Among biologically active compounds, calcium ions (Ca2+) are one of the most important species in cell physiological functions. Development of new calcium chelators with two-photon absorption (TPA) properties is a state-of-the-art challenge for chemists. In this study, we report the first and efficient synthesis of 5-bromo-2-nitrobenzyl-substituted ethylene glycol tetraacetic acid (EGTA) as a platform for a new generation of calcium chelators with TPA properties in the near-infrared region. New calcium chelators with high TPA properties, that is, a two-photon (TP) fragmentation efficiency of δu = 20.7 GM at 740 nm for 2-(4-nitrophenyl)benzofuran (NPBF)-substituted EGTA (NPBF-EGTA, Kd = 272 nM) and δu = 7.8 GM at 800 nm for 4-amino-4′-nitro-1,1′-biphenyl (BP)-substituted EGTA (BP-EGTA, Kd = 440 nM) derivatives, were synthesized using Suzuki–Miyaura coupling reactions of the bromide with benzofuran-2-boronic acid and 4-(dimethylamino)phenyl boronic acid, respectively. The corresponding acetoxymethyl (AM) esters were prepared and successfully applied to the Ca2+-uncaging reaction triggered by TP photolysis in vivo.
Cited literature [22 references]
https://hal-univ-rennes1.archives-ouvertes.fr/hal-01395864
Contributor : Claudine Katan <>
Submitted on : Saturday, November 12, 2016 - 12:32:41 PM
Last modification on : Wednesday, January 13, 2021 - 3:13:02 AM
Long-term archiving on: : Thursday, March 16, 2017 - 11:54:23 AM
Contributor : Claudine Katan <>
Submitted on : Saturday, November 12, 2016 - 12:32:41 PM
Last modification on : Wednesday, January 13, 2021 - 3:13:02 AM
Long-term archiving on: : Thursday, March 16, 2017 - 11:54:23 AM
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acsomega_2016_1_193.pdf
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