Synthesis and nuclear magnetic resonance study of 3-dehydroecdysteroids |
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Authors: | Jean-Pierre Girault Catherine Blais Philippe Beydon Christian Rolando Ren Lafont |
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Institution: | Jean-Pierre Girault,Catherine Blais,Philippe Beydon,Christian Rolando,René Lafont |
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Abstract: | Several 3-dehydro- (or 3-oxo-) ecdysteroids have been prepared by enzymatic and/or chemical means. Methods for their purification using various high-performance liquid chromatography systems are described. Proton and carbon nuclear magnetic resonance analyses show that 3-dehydroecdysteroids when dissolved in water or methanol (but not in chloroform) present a temperature-dependent equilibrium between two forms. The possible structure of these two forms is discussed. |
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Keywords: | ecdysteroids proton NMR carbon NMR |
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