1H NMR Study of the Regioisomers of Primary O-Di- and Trisubstituted α-Cyclodextrins
- 1 October 1988
- journal article
- Published by Oxford University Press (OUP) in Bulletin of the Chemical Society of Japan
- Vol. 61 (10) , 3409-3415
- https://doi.org/10.1246/bcsj.61.3409
Abstract
The regioisomers of bis- and tris[C(6)-O-sulfonylated] α-cyclodextrins were converted in satisfactory yields to the corresponding C(6)-pyridinio derivatives, which afforded the characteristic splitting patterns of 1H NMR signals available for a regioisomer determination. Electrostatic repulsive interactions between the positively charged pyridinio groups play an important role in the remarkable splitting of the 1H NMR signals observed for some regioisomers.This publication has 17 references indexed in Scilit:
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