Constituents of Egyptian Euphorbiaceae. IX. Irritant and cytotoxic ingenane esters fromEuphorbia paralias L.
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The irritant and cytotoxic constituents of the latex ofEuphorbia paralias L. were separated from the hydrocarbon fraction by means of solvent partition. 3 new ingenane esters were identified from the toxic ether fraction. The major compound was 3-angelyl-20-deoxyingenol and the 2 minor compounds were 3-hexanoyl-20-deoxyingenol and 3-angelylingenol. These compounds were of a similar potency to podophyllin in the inhibition of3H-thymidine uptake by TLX/5 mouse lymphoma cells. In addition the compounds produced a persistent erythema of the mouse ear in sub-microgram doses.
KeywordsEther Ester Lymphoma Hydrocarbon Lymphoma Cell
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