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Proton magnetic resonance spectra of tetracyclic triterpene alcohols under the influence of a lanthanide shift reagent

โœ Scribed by Itoh Toshihiro; Tamura Toshitake; Matsumoto Taro


Book ID
118978260
Publisher
Elsevier Science
Year
1976
Tongue
English
Weight
559 KB
Volume
27
Category
Article
ISSN
0039-128X

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๐Ÿ“œ SIMILAR VOLUMES


Lanthanide shift reagents. IX. Proton an
โœ David M. Rackham; Anthony F. Cockerill; Roger G. Harrison ๐Ÿ“‚ Article ๐Ÿ“… 1978 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 231 KB

## Abstract Highly specific proton lineโ€broadening and paramagnetic ^13^C shifts observed for Nโ€butylโ€N(4โ€methyloxazolโ€2โ€yl)โ€2โ€methylpropionamide in the presence of fluorinated lanthanide shift reagents, are absent when nonโ€fluorinated reagents are used. This unusual behaviour is rationalized in te