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Hadamard 1D 1H TOCSY and its application to oligosaccharides

✍ Scribed by Jan Schraml; Herman van Halbeek; André De Bruyn; Roland Contreras; Marleen Maras; Piet Herdewijn

Publisher
John Wiley and Sons
Year
1997
Tongue
English
Weight
385 KB
Volume
35
Category
Article
ISSN
0749-1581

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✦ Synopsis

Replacement of a series of N consecutive one-site selective excitation NMR experiments by N simultaneous N-site excitations with phases of component pulses varied according to the N Â N Hadamard matrix o †ers a sensitivity improvement of the order of (for N = 2, 4, 8, . . . ) [R. Freeman, Spin Choreography, pp. 177-183. Spektrum, ÕN Oxford (1996) ] . Here this principle was extended to one-dimensional (1D) 1H TOCSY experiments, in the absence and presence of heteronuclear decoupling. The 1D 1H Hadamard TOCSY technique was applied to selected oligosaccharides, representing a class of biomolecules for which multiple 1D TOCSY experiments are the mainstay in 1H NMR spectral assignment and structural characterization.

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