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O-BODIPY Dyes: Synthesis, Properties and Applications in Cell Microscopy

AuthorsBlázquez-Moraleja, Alberto; Saenz de Santa María, I.; Chiara, María D.; Álvarez-Fernández, D.; Garcia-Moreno, I. CSIC ORCID; Prieto Montero, Ruth; Martínez-Martínez, V.; Bañuelos, J.; López-Arbeloa, I.; Chiara, José Luis CSIC ORCID
Issue Date18-Jun-2019
PublisherRoyal Society of Chemistry (UK)
Citation20th Tetrahedron Symposium (2019)
AbstractWe have developed a general post-synthetic strategy for the direct one-step incorporation of hydroxy acids and diacids at the boron atom of F-BODIPY dyes. The tethering reaction uses easy-to-handle reagents, has broad functional group compatibility and proceeds under mild conditions without requiring any pre-functionalization of the starting F-BODIPY to afford the corresponding O-BODIPY derivative in good yield. The orthogonal geometrical arrangement of the hydroxyl acid or diacid moiety with respect to the mean plane of the BODIPY chromophore hampers intermolecular aggregation processes that quench fluorescence, while the covalent attachment to the boron atom has a minimal effect on the absorption properties of the chromophore. We will describe the application of this strategy to the one-step tagging of BODIPYs for the custom modification of their solubility properties and to the preparation of fluorescent probes for mitochondria targeting via a functional membrane transporter. In the first application, fully water-soluble and hydrolytically stable BODIPYs were prepared in a single step by incorporating a hydroxy acid solubility module having either neutral (tetra- and octa-ethylene glycol chains) or switterionic (sulfobetaine) hydrophilic tags. The resulting BODIPYs are valuable live cell imaging probes. In the second application, we have designed the first fluorescent probes that are actively channelled into the mitochondrial matrix by the carnitine system in living cells. Our functional probes have a minimalist structural design based on the BODIPY chromophore and carnitine as a biotargeting element. The new fluorescent probes selectively label mitochondria regardless of their membrane potential and in an enantioselective way.
DescriptionBangkok, Thailand, 18 - 21 June 2019. --
Appears in Collections:(IQFR) Comunicaciones congresos
(IQOG) Comunicaciones congresos

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