## Abstract ^13^C n.m.r. chemical shifts and one bond ^13^C, ^1^H coupling constants for cyclopropene and its 1‐ and 3‐methyl derivatives as well as for methyl cyclopropane have been measured. The data for cyclopropene are 108·9 ppm and 228·2 Hz, 2·3 ppm and 167·0 Hz in the olefinic and allylic pos
13C Fourier transform n.m.r.: XIII—reassignment of the 13C spectrum of ergosterol
✍ Scribed by Robert J. Cushley; J. Douglas Filipenko
- Publisher
- John Wiley and Sons
- Year
- 1976
- Tongue
- English
- Weight
- 183 KB
- Volume
- 8
- Category
- Article
- ISSN
- 0749-1581
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
The complete labeling pattern of ergosterol isolated from Saccharomyces cerevisiae grown with [1‐^13^C] acetate is detailed and the results of this study have led to a reassignment of carbons 5, 8, 12, 16, 22 and 23 in the ^13^C n.m.r. spectrum of ergosterol.
📜 SIMILAR VOLUMES
## Abstract Characteristic differences in multiplet hyperfine structure observed in coupled ^13^C n.m.r. spectra of symmetrical __o__‐disubstituted benzene rings are explained on general grounds. Contrary to earlier proposals, the observation of this effect in unsymmetrical systems is not a suitabl
## Abstract Carbon‐13 n.m.r. spectra of formic, acetic, propionic and butyric acid amides with __N__,__N__‐di‐__n__‐alkyl substituents have been completely assigned with the aid of extensive double resonance experiments. The data obtained were used to study long range steric effects on chemical and
The Raman spectrum of cyanogen 13C214N2 has been investigated at nearly Doppler resolution by means of a stimulated Raman technique. The regions around the bandheads of the nu1 (2260 cm-1) and nu2 (835 cm-1) vibrations have been recorded. Besides the fundamentals, hot bands arising from v5 = 1-3 and
## Abstract The ^13^C n.m.r. chemical shifts of the __sp__‐hybridized carbons in dialkylcarbodiimides have values of δc ≃ 140. These shifts are compared with those of similarly hybridized carbons occuring in other classes of compounds.