The total assignment of the 1 H and 13 C NMR spectra of 24 cis-endo and 15 cis-exo diastereoisomers of C-1-substituted 2,4-dimethyl-8-oxabicyclo[3.2.1]oct-6-en-3-one derivatives was deduced from the concerted application of DEPT, COSY, HETCOR, HMBC, HMQC and PS-NOESY experiments. The relative stereo
✦ LIBER ✦
Cyclothioacetals and Cycloacetals of Androst-4-ene-3,17-dione and Related Compounds. 13C NMR Spectral Assignments
✍ Scribed by G. M. Caballero; E. G. Gros
- Publisher
- John Wiley and Sons
- Year
- 1996
- Tongue
- English
- Weight
- 203 KB
- Volume
- 34
- Category
- Article
- ISSN
- 0749-1581
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✦ Synopsis
The 13C NMR spectra 1 7 derivatives of androst-4-ene-3,17-dione were recorded and assigned. Assignments were based on spectral comparison with compounds of similar structure and distortionless enhancement by polarization transfer (DEPT) NMR measurements.
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The 1H and 13C NMR spectra of cis-endo (a) and cis-exo (b) diastereoisomeric pairs of Ðve di †erently C-1-functionalized 2,4-dimethyl-8-oxabicyclo[3.2.1]oct-6-en-3-ones were completely assigned. Several trends regarding the variation of chemical shifts and coupling constants of hydrogen and carbon a