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New premyrsinane-type diterpene polyesters from Euphorbia falcata |
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| Authors: | Edvá rd SulyokAndrea Vasas,Dó ra Ré deiPeter Forgo,Zoltá n KeleGyula Pinke,Judit Hohmann |
| Affiliation: | a Department of Pharmacognosy, University of Szeged, Eötvös u. 6., H-6720 Szeged, Hungary b Department of Medical Chemistry, University of Szeged, Dóm tér 6., H-6720 Szeged, Hungary c Department of Botany, Faculty of Agricultural and Food Sciences, University of West Hungary, Vár u. 2., H-9200 Mosonmagyaróvár, Hungary |
| Abstract: | Four new premyrsinane-type diterpenes (1-4) were isolated from the methanol extract of the whole, undried plant of Euphorbia falcata. Their structures were determined by a combination of 1D and 2D NMR (COSY, HMBC, HSQC and NOESY) techniques and mass spectral data as di-, tetra-, penta- and hexaesters of diterpene polyols, esterified with acetic, benzoic, propanoic, isobutanoic and n-hexanoic acids. One of the compounds contains a rare hemiacetal moiety. This type of diterpenes was previously detected only in four Euphorbia species (Euphorbia aleppica, Euphorbia decipiens, Euphorbia macroclada and Euphorbia pithyusa subsp. cupani). |
| Keywords: | Euphorbia falcata L. Euphorbiaceae Premyrsinane Diterpene |
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