| Autor: |
Akhrem, A., Gualyakevich, O., Lysenko, G., Mikhal'chuk, A., Tolstorozhev, G. |
| Zdroj: |
Journal of Applied Spectroscopy; July 2001, Vol. 68 Issue: 4 p554-561, 8p |
| Abstrakt: |
The IR spectra of biologically active molecules of 8-azasteroids and model compounds in the region of C=O, C=C, C--N, and C--H vibrations (1800–1400 cm−1) have been studied in detail. The structure of compounds containing isostructural and isoelectronic α--acyl--β--aminovinylcarbonyl and α--acyl--β--alkoxyvinylcarbonyl fragments have been analyzed. Interpretation of the structure of the IR spectra and of the specificity of the manifestation of the vibrational modes under consideration in the molecules of a particular class of 8-azasteroids is given. The electronic structure of the molecules under investigation complies with the model of mesomeric tautomerism of the aminovinyldicarbonyl fragment. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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