1H and 13C NMR signal assignments of carboxyl-linked glucosides of bile acids
✍ Scribed by Takashi Iida; Genta Kakiyama; Akari Shimada; Kumiko Mushiake; Nariyasu Mano; Junichi Goto; Toshio Nambara
- Publisher
- John Wiley and Sons
- Year
- 2003
- Tongue
- English
- Weight
- 140 KB
- Volume
- 41
- Category
- Article
- ISSN
- 0749-1581
- DOI
- 10.1002/mrc.1173
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✦ Synopsis
Abstract
Complete ^1^H and ^13^C resonance assignments were carried out for a new type of carboxyl‐linked glucosides of chenodeoxycholic (3α,7α‐dihydroxy‐5β‐cholan‐24‐oic) and hyodeoxycholic (3α,6α‐dihydroxy‐5β‐cholan‐24‐oic) acids by using several homonuclear (^1^H–^1^H) and heteronuclear (^1^H–^13^C) 2D NMR techniques. Differences in the ^1^H and ^13^C resonances between the α‐ and β‐anomers of the ester glucosides of bile acids were clarified for the first time. A comparison of the ^1^H and ^13^C signal shifts induced by β‐D‐glucosidation at the 24‐carboxyl and 3α‐hydroxyl groups in the parent 5β‐cholanoic acid was also made. Copyright © 2003 John Wiley & Sons, Ltd.
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