The isolation and structural elucidation of some new methoxy-containing artefacts from methanol extracts of Bryonia dioica roots is reported. Their isolation supports the suggestion that the isocucurbitacins (3-hydroxy-2-ketones) are not natural compounds but are really artefacts formed from the more usual 2-hydroxy-3-keto compounds.
P. J. Hylands and E. S. Mansour, J. Chem. Soc., Perkin Trans. 1, 1983, 2821 DOI: 10.1039/P19830002821
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