Four-bond protoeproton spin coupling constants were measured between the azomethine proton and the glycine CH protons of some coordinated glycine Schiff bases where the parent aldehyde is aromatic. Such systems are models for vitamin B, enzyme substrate complexes. It is demonstrated that the couplin
The Stereochemistry of Rings A and B in 6-substituted Δ4-3-ketosteroids. A study of H1 allylic spin-spin coupling in rigid systems.
✍ Scribed by D.J. Collins; J.J. Hobbs; S. Sternhell
- Publisher
- Elsevier Science
- Year
- 1963
- Tongue
- French
- Weight
- 332 KB
- Volume
- 4
- Category
- Article
- ISSN
- 0040-4039
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✦ Synopsis
JXE endocrinological importance of a number of natural' and n syntheticL 6-substituted steroid hormones makes their stereochemistry of special interest, We have prepared a number of 6-substituted-A4-cholestene-3-ones and examined their NkR spectra to determine whether a general correlation could be made between the configuration (and conformation) at the &position and the character of the NXR signal attributed to the vinylic proton at C4.
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