E-Homolupane Derivatives Substituted in Position 17 and 22a. 1H NMR, 13C NMR and IR Spectra
| Autor: | S. Hilgard, Alois Vystrčil, Miloš Buděšínský, Václav Křeček |
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| Rok vydání: | 1995 |
| Předmět: |
Deuterium NMR
Crystallography Carbon-13 NMR satellite Chemistry Stereochemistry Phosphorus-31 NMR spectroscopy Transverse relaxation-optimized spectroscopy Nuclear magnetic resonance spectroscopy of nucleic acids General Chemistry Nuclear magnetic resonance spectroscopy Fluorine-19 NMR Carbon-13 NMR |
| Zdroj: | Collection of Czechoslovak Chemical Communications. 60:619-635 |
| ISSN: | 1212-6950 0010-0765 |
| DOI: | 10.1135/cccc19950619 |
| Popis: | A series of derivatives with various oxygen functionalities in positions 17,22a or 19,20 was prepared from diene I and olefin XVI by addition and oxidation reactions. The structure of the obtained compounds was confirmed by 1H NMR, 13C NMR and IR spectroscopy. The kind of intramolecular association of the 17α-hydroxy group was studied in connection with modification of the side chain and substitution in position 22a. Complete assignment of the hydrogen signals and most of the coupling constants was accomplished using a combination of 1D and 2D NMR techniques. The 1H and 13C NMR spectra are discussed. |
| Databáze: | OpenAIRE |
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