Biosynthese des ramifications en C-24 des phytosterols de Physarum polycephalum et d'Ochromonas danica |
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Authors: | M.F. Lecompte M. Lenfant |
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Affiliation: | Institut de Chimie des Substances Naturelles, Gif/Yvette 91190, France |
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Abstract: | The side chain C-24 alkylation mechanism of phytosterols of Physarum polycephalum and Ochromonas danica, cultured in a nutrient medium containing methionine-CD3, has been studied. Depending on species, five or four deuterium atoms were incorporated respectively in C-24 ethyl phytosterols. No relation could be established between the stereochemistry of C-24 and the alkylation mechanism at this position. |
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Keywords: | myxomycete chrysophyte biosynthesis side chain alkylation mechanism stereochemistry phytosterols. |
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