Two-dimensional NMR analysis of selected dequalinium analogues having aralkyl linking groups
✍ Scribed by J. Campos Rosa; D. Galanakis; C. R. Ganellin
- Publisher
- John Wiley and Sons
- Year
- 1998
- Tongue
- English
- Weight
- 98 KB
- Volume
- 36
- Category
- Article
- ISSN
- 0749-1581
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✦ Synopsis
The 1H signals of the 4-aminoquinolinium moieties and the 13C signals of the title compounds were fully assigned, using the concerted application of one-and two-dimensional NMR techniques, including nuclear Overhauser e †ect di †erence, DEPT, COSY, HETCOR and long-range 13CÈ1H correlation spectroscopy. The e †ect that quaternization of the endocyclic nitrogen atom has on the resonances of the proton and carbon atoms of the 4-aminoquinoline ring is reported. Atomic charges of the heterocyclic moiety of model compounds such as 4AQ, 4AQ.HBr and 4-amino-1-benzylquinolinium bromide (8) are shown to be linearly related to 13C chemical shifts.