A study of the structure of the molecules of 3,7,10-carbonyl-containing germatranes by X-ray structural analysis and NMR spectroscopy
β Scribed by N. V. Alekseev; S. N. Gurkova; S. N. Tandura; V. M. Nosova; A. I. Gusev; T. K. Gar; I. R. Segel'man; N. Yu. Khromova
- Publisher
- SP MAIK Nauka/Interperiodica
- Year
- 1982
- Tongue
- English
- Weight
- 322 KB
- Volume
- 22
- Category
- Article
- ISSN
- 0022-4766
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## Abstract A variableβtemperature ^1^HβNMR study and Xβray structural analysis show that the most stable conformational isomer of [3.3](2,6)pyridinophane 2 is the __syn__(boatβboat) conformer, and the relative stability order of the three stable conformers is __syn__(boatβboat) > __syn__(chairβboa
The structure of N-formyl, N-acetyI-N-methyl, and N-acetyl glycosylamines has been studied by NMR spectroscopy in solution, single crystal X-ray diffractometry, and corroborated by PM3 semiempirical calculations. The results quite agree with an anti conformation around the glycosydic bond for these