## Abstract The ^13^C and ^1^H NMR spectra of a series of methiodides of monoβ and diβCβmethyl derivatives of 1βmethylβ4βphenylβ4βpiperidinols are reported and chemical shift data analysed in terms of configurations and conformations of isomeric sets. Results demondtrate the value of quaternary sal
Conformational study of anticholinesterase carbamates in the furylbenzene series by 1H and 13C NMR spectroscopy
β Scribed by N. Platzer; N. Ronzani; C. Lang; C. Lange
- Publisher
- John Wiley and Sons
- Year
- 1982
- Tongue
- English
- Weight
- 535 KB
- Volume
- 18
- Category
- Article
- ISSN
- 0749-1581
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β¦ Synopsis
Abstract
The structural analysis of carbamates derived from 2β(Ξ±βfuryl)benzaldoximes and 2β(Ξ±βfuryl)benzyl alcohols was carried out by ^1^H and ^13^C NMR spectroscopy. The conjugative and steric effects of alkyl substituents introduced on the benzene rings were found to modify the relative orientation of the aromatic and furan rings. The existence of a close relationship between the stereochemistry of the studied compounds and their anticholinesterase activity has been proposed.
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Two series of 2,4,6-tris(amino)-s-triazines were studied by 1 H and 13 C NMR. 15 N NMR had previously demonstrated hindered rotation of the acyclic amino substituents (NHallyl, NHpropyl) around the Ar -N bonds at room temperature. In the present work, 1 H and 13 C NMR studies showed that rotation is
## Abstract The ^1^H and ^13^C NMR spectra of 22 pinane derivatives have been recorded and completely assigned. The spectral data for this set of compounds provide information about the conformation of these molecules and allow the deduction of the various structural effects observed in the bicyclo
Four small type I collagen CNBr peptides containing complete natural sequences were purified from bovine skin and investigated by CD and 1H- and 13C-nmr spectroscopies to obtain information concerning their conformation and thermal stability. CD showed that a triple helix was formed at 10 degrees C