## Abstract The ^1^H NMR spectrum of the quinolizidine alkaloid ( − )‐ anagyrine has been studied at 200 and 600 MHz. A full assignment of the ^1^H signals has been achieved by application of a variety of NMR techniques, including homo‐nuclear spin decoupling, NOE difference, 2D δ~H~/δ~H~ COSY and
Assignment of the 1H and 13C NMR spectra, sequence and conformation of the synthetic pentasaccharide SanOrg34006 and its precursors
✍ Scribed by Judica Bootsma; Gerard Wagenaars; Erik Dreef; Floris Hout; Edwin Kellenbach
- Publisher
- John Wiley and Sons
- Year
- 2001
- Tongue
- English
- Weight
- 109 KB
- Volume
- 39
- Category
- Article
- ISSN
- 0749-1581
- DOI
- 10.1002/mrc.836
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✦ Synopsis
Abstract
Proton and carbon chemical shift data and proton–proton coupling constants of the synthetic antithrombotic pentasaccharide SanOrg34006 and its synthetic precursors are reported. Long‐range heteronuclear correlation experiments allow the determination of the substitution pattern of the protecting groups in the precursor molecules. Also, the sequence of the oligosaccharide was confirmed this way. The conformation of the α‐L‐iduronic acid moiety was studied by the analysis of the ^3^J(^1^H,^1^H) coupling constants. Copyright © 2001 John Wiley & Sons, Ltd.
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