Conformational studies on seven-membered rings containing the disulfide and trisulfide groups
โ Scribed by R.M. Moriarty; N. Ishibe; M. Kayser; K.C. Ramey; H.J. Gisler Jr.
- Publisher
- Elsevier Science
- Year
- 1969
- Tongue
- French
- Weight
- 256 KB
- Volume
- 10
- Category
- Article
- ISSN
- 0040-4039
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โฆ Synopsis
The barrier to ring inversion in medium sized carbocyclic rings may be increased substantially by the introduction of heteroatoms in place of the component carbon atoms.'a2 'S'
As expected the nmr spectrum of 1 showed at 30ยฐ only one sharp singlet peak 4883
๐ SIMILAR VOLUMES
## Abstract For Abstract see ChemInform Abstract in Full Text.
For the first time tripeptides, Z-AA(1)-Xaa-AA(3)-OMe (AA(1) and AA(3) = Gly or Aib, Xaa = 2Pmg and 2Pyg) were prepared containing alpha-methyl-alpha-(2-pyridyl)glycine (2Pmg) and alpha-(2-pyridyl)glycine (2Pyg) by solid-phase Ugi reaction. These results clearly indicate that for the preparation of