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Mechanism of gas-phase aldose-ketose isomerization: A study using tandem mass spectrometry and theoretical calculations by Ya-Jun Zheng; Andreas Staempfli; Julie A. Leary is a Chemistry article available to read on EtoBox.

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Fast-atom bombardment tandem mass spectrometry and the semiempirical molecular orbital method were used to investigate the mechanism of gas-phase aldose-ketose isomerization process in lithiated 1,3 linked disaccharide isomers. Both the 1,3 hydrogen shift and hydride transfer mechanisms were investigated. Our experimental and theoretical calculations support the latter. The hydride transfer mechanism in these lithium-coordrnated systems is similar to the xylose isomerase catalyzed aldose-ketose isomerization.

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Author

Ya-Jun Zheng; Andreas Staempfli; Julie A. Leary

Publisher

Elsevier Science; Springer-Verlag; Springer New York LLC; American Chemical Society (ACS); Springer Science and Business Media LLC; Elsevier BV (ISSN 1044-0305)

Published

1993

Language

EN

Field

Chemistry (Physical Sciences)