Abstract
A GREAT deal of work has been done on oil of Croton1 but the genus as a whole has received little attention from the chemical point of view. Some alkaloids have been reported and the structures of some of these have been established2. Recently, in connexion with work in these laboratories on the volatile oils of Venezuelan species of Croton3, we noticed that aqueous extracts of many of the local species gave positive tests with alkaloid reagents such as Maeyer's, Dragendorf's and Vassler's. No alkaloid could be extracted into organic solvents so the base present was assumed to be quaternary. The bark of the trees proved to be richest in alkaloid content.
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References
Cherbuliez, E., Ehninger, E., and Bernhardt, K., Helv. Chim. Acta, 15, 658 (1952). Hecker, E., Angewandte Chem., 74 (18), 722 (1962).
Haynes, L. J., and Stuart, K. L., J. Chem. Soc., 1789 (1963). Haynes, L. J., Stuart, K. L., Barton, D. H. R., and Kirby, G. W., Proc. Chem. Soc., 280 (1963).
Bracho, R., and Crowley, K. J. (in preparation).
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BURNELL, R., CASA, D. A Quaternary Alkaloid from Croton turumiquirensis, Stayerm.. Nature 203, 296–297 (1964). https://doi.org/10.1038/203296a0
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DOI: https://doi.org/10.1038/203296a0
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