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Stereochemical Aspects of Proton Chemical Shifts. IX. Influence of O-Alkyl Groups on the Chemical Shift of the Glycosidic Proton in Pyranoid Systems

✍ Scribed by André de Bruyn; Noël Hosten; Marc J. O. Anteunis; Marc Claeyssens; Clement K. De Bruyne

Publisher
Wiley (John Wiley & Sons)
Year
2010
Weight
333 KB
Volume
88
Category
Article
ISSN
0037-9646

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Proton NMR data for a number of l-.IZ-4-Y-3,5-dimethylbenzenc?s and l-X-2-Y-4-Z-3,5-dimethylbenzenc?s are presented. The proton chemical shifts of the methyl groups at positions 3 and 5 are mainly affected by the ring current effect of the snbstituents. Thii conclusion was strongly supported by the