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The Impact of Leaving Group Anomericity on the Structure of Glycosyl Cations of Protected Galactosides

MPG-Autoren
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Greis,  Kim
Institute of Chemistry and Biochemistry, Freie Universität Berlin ;
Molecular Physics, Fritz Haber Institute, Max Planck Society;

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Mucha,  Eike
Molecular Physics, Fritz Haber Institute, Max Planck Society;

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Lettow,  Maike
Institute of Chemistry and Biochemistry, Freie Universität Berlin ;
Molecular Physics, Fritz Haber Institute, Max Planck Society;

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Thomas,  Daniel
Molecular Physics, Fritz Haber Institute, Max Planck Society;

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Kirschbaum,  Carla
Institute of Chemistry and Biochemistry, Freie Universität Berlin ;
Molecular Physics, Fritz Haber Institute, Max Planck Society;

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Helden,  Gert von
Molecular Physics, Fritz Haber Institute, Max Planck Society;

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Meijer,  Gerard
Molecular Physics, Fritz Haber Institute, Max Planck Society;

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Pagel,  Kevin
Institute of Chemistry and Biochemistry, Freie Universität Berlin ;
Molecular Physics, Fritz Haber Institute, Max Planck Society;

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cphc.202000473.pdf
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Zitation

Greis, K., Mucha, E., Lettow, M., Thomas, D., Kirschbaum, C., Moon, S., et al. (2020). The Impact of Leaving Group Anomericity on the Structure of Glycosyl Cations of Protected Galactosides. ChemPhysChem, 21(17), 1905-1907. doi:10.1002/cphc.202000473.


Zitierlink: https://hdl.handle.net/21.11116/0000-0006-BCF0-7
Zusammenfassung
It has been reported that fragments produced by glycosidic bond breakage in mass spectrometry‐based experiments can retain a memory of their anomeric configuration, which has major implications for glycan sequencing. Here we use cryogenic vibrational spectroscopy and ion mobility‐mass spectrometry to study the structure of B‐type fragments of protected galactosides. Cationic fragments were generated from glycosyl donors carrying trichloroacetimidate or thioethyl leaving groups of different anomeric configuration. The obtained infrared signatures indicate that the investigated fragments exhibit an identical structure, which suggests that there is no anomeric memory in B‐type ions of fully protected monosaccharides.