𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Natural Abundance 13C-NMR. of Vitamin D3 Metabolites

✍ Scribed by Thomas H. Williams; David N. Greeley; Enrico G. Baggiolini; John J. Partridge; Shian-Jan Shiuey; Milan R. Uskokovié

Publisher
John Wiley and Sons
Year
1980
Tongue
German
Weight
312 KB
Volume
63
Category
Article
ISSN
0018-019X

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

Chemical shifts of ^13^C‐ and ^1^H‐NMR. spectra of vitamin D~3~ metabolites (2–7) are assigned. Substituent effect parameters due to hydroxyl groups are deduced by comparison with vitamin D~3~.

📜 SIMILAR VOLUMES

Natural-abundance 13C NMR of brain
Natural-abundance 13C NMR of brain
✍ Michael Bárány; Carlos Arús; Yen-Chung Chang 📂 Article 📅 1985 🏛 John Wiley and Sons 🌐 English ⚖ 342 KB

## Abstract In natural‐abundance ^13^C NMR spectrum of excised rat brain 55 resonances were resolved. The chemical shifts of most of the resonances were well correlated with those of pure brain metabolites, determined under identical experimental conditions. These resonances were also found in the

Natural Abundance 13C-NMR. of Reduced Is
Natural Abundance 13C-NMR. of Reduced Isoalloxazine
✍ Cees G. Van Schagen; Franz Müller 📂 Article 📅 1978 🏛 John Wiley and Sons 🌐 German ⚖ 232 KB

## Abstract When an isoalloxazine derivative (**1**) was reduced (**2**) its ^13^C‐NMR. resonances were all shifted upfield and the largest shifts were observed for C (4a), C(6) and C(8) but downfield shifts for C(2), C(4) and C(10a). The results and their biochemical implications are shortly discu

Natural abundance 13C NMR studies of per
Natural abundance 13C NMR studies of perezone and derivatives
✍ P. Joseph-Nathan; Ma. P. González; LeRoy F. Johnson; James N. Shoolery 📂 Article 📅 1971 🏛 John Wiley and Sons 🌐 English ⚖ 386 KB

## Abstract Assignment of all ^13^C chemical shifts of perezone (1) and some derivatives was possible using time averaged 25·15 MHz spectra with the aid of proton noise modulated and CW decoupling. Rapid interconversion of tautomeric forms of 2,5‐dihydroxy‐1,4‐benzoquinones is deduced from the ^13^

Natural abundance 13C NMR spectrum of gl
Natural abundance 13C NMR spectrum of glycogen in humans
✍ T. Jue; J. A. B. Lohman; R. J. Ordidge; R. G. Shulman 📂 Article 📅 1987 🏛 John Wiley and Sons 🌐 English ⚖ 193 KB

In vivo NMR has focused on using "P and 'H to study metabolism in humans. Comparable "C NMR studies have not been undertaken, presumably, because of its insensitivity. We report herein that the natural abundance I3C signal from CI glycogen is observable. The ability to observe the signal opens new

Natural-abundance 15N13C correlation spe
Natural-abundance 15N13C correlation spectra of vitamin B-12
✍ Eriks Kupče; Ray Freeman 📂 Article 📅 2007 🏛 John Wiley and Sons 🌐 English ⚖ 128 KB

## Abstract Two‐dimensional nitrogen–carbon NMR correlation spectra have been derived by a new reconstruction technique based on standard two‐dimensional HMQC and HMBC spectra, and operating with natural ^15^N and ^13^C isotopic abundances. Compared with conventional three‐dimensional spectroscopy

Two-dimensional INADEQUATE 13C NMR Study
Two-dimensional INADEQUATE 13C NMR Study on Vitamin D3
✍ C. Kruk; A. W. H. Jans; J. Lugtenburg 📂 Article 📅 1985 🏛 John Wiley and Sons 🌐 English ⚖ 266 KB

Two-dimensional INADEQUATE -C NMR spectroscopy has been used to find the carbon-carbon connectivities of the carbon skeleton of vitamin D3. This information leads to the unambiguous assignment of the chemical shifts of alI 27 carbon atoms of vitamin D3.