T. Bukreeva, B. A. Shukhobodskii
Sep 1, 1987
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Journal
Chemistry of Natural Compounds
Abstract
Compound (II) has the composition Cx6HxoOs, M + 330, mp 328-330°C, %max 250, 359, 370 nm (log c 3.53, 3.86, 3.92), and on methylation with diazomethane formed substances (Ib). On the basis of a study of its UV and mass spectra and a comparison of its physical constants with those given in the literature, this compound was identified as 3,3'-di-O-methylellagic acid [3, 5]. A similar substance has been detected previously in Euphorbia formosaria [5, 6], while 3,3',4-tri-O-methylellagic acid has been isolated from Euphorbia tirucalli [7].