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Three new jatrophane diterpenes, esulatin A, B and C (1-3) were isolated and characterized from the whole, undried plant of Euphorbia esula. By means of spectral analysis, the structures were established as penta- and heptaesters of hitherto unknown, polyfunctional diterpene parent alcohols. Esulatin A (1) and C (3) are the diterpenoids with the highest degree of esterification identified to date from the family Euphorbiaceae.
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Hohmann et al. (1997) studied this question.
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