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Pyrolysis gas chromatography of some sterols (II)

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Summary

The pyrolysis of sterols has been studied by means of a Curie point pyrolyzer. The pyrogram is divided into two clearly defined zones: (a) a zone of similar retention time to that of the sterol, in which three major decomposition products appear together with starting material, the former having been identified as the corresponding Δ3,5-diene, Δ4-3-one, and Δ1,5-3-one, and (b) a zone of very short retention time, (volatile fraction), in which up to 15 different components have been identified. The studies have been carried out for cholesterol, β-sitosterol, stigmasterol, campesterol and demosterol. The pyrograms for the acetylated derivative and the trimethyl silyl ether of cholesterol, and the Δ4-and Δ5-cholesten-3-ones are also presented. The results are correlated, and the mechanisms of formation of pyrolysis products having retention times similar to that of the sterol, are discussed in detail.

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Author notes

  1. E. Julia-Danés

    Present address: Research Dept., Hispano Quimica Houghton S.A., Barcelona, Spain

Authors and Affiliations

  1. Dept. of Anal. Chem., Instituto Quimico de Sarriá, Barcelona, Spain

    M. Gassiot-Matas & E. Julia-Danés

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  1. M. Gassiot-Matas
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  2. E. Julia-Danés
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Gassiot-Matas, M., Julia-Danés, E. Pyrolysis gas chromatography of some sterols (II). Chromatographia 9, 151–156 (1976). https://doi.org/10.1007/BF02281661

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  • DOI: https://doi.org/10.1007/BF02281661

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