Glucosidation shifts of allylic and benzylic alcohols in 13C NMR spectroscopy
✍ Scribed by Isao Horibe; Shujiro Seo; Yohko Yoshimura; Kazuo Tori
- Publisher
- John Wiley and Sons
- Year
- 1984
- Tongue
- English
- Weight
- 295 KB
- Volume
- 22
- Category
- Article
- ISSN
- 0749-1581
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✦ Synopsis
Abstract
The ^13^C FT NMR spectra of β‐D‐glucopyranosides (including their tetraacetates) of several secondary allylic and benzylic alcohols were compared with those of methyl β‐D‐glucopyranoside and the corresponding parent alcohols. The characeristic glucosidation shifts observed for these alcohols may be applicable to the determination of the absolute configuration of the hydroxy group in these alcohols.
📜 SIMILAR VOLUMES
Lemieux and Koto' recently published a review.on the conformational properties of glycosidic linkages, wherein 13C chemical shifts around glycosidic linkages are shown to depend upon conformations thereabout by using some cyclohexyl glucosides. hiring our studies of structural determinations and t3C
## Abstract The ^1^H and ^13^C NMR resonances of 16 purine glucosides were assigned by a combination of one‐ and two‐dimensional NMR experiments, including gs‐COSY, gs‐HSQC, and gs‐HMBC, in order to characterize the effect of substituent and the position of glucose unit on the NMR chemical shifts.
## Abstract Acylation of allyl alcohols induces strong carbon shifts, shielding γ and deshielding δ effects. These shifts are a consequence of through‐bond polarization of the olefinic carbons. Allyl ethers show similar, but milder perturbations. The olefinic carbon shifts reveal a strong concentra