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Original Articles

Isolation and characterization of cytotoxic compounds from Euphorbia cornigera Boiss.

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Pages 985-991 | Received 03 May 2010, Accepted 27 Jul 2010, Published online: 08 Nov 2010
 

Abstract

Methanolic extract of Euphorbia cornigera shoots was separated using HPLC, affording compounds 14. Their structures and relative stereochemistry were established after obtaining their spectroscopic (IR, 1H, 13C NMR COSY-45°, HOHAHA, HSQC, HMBC, NOESY, and mass measurement) data. On the basis of these data, the compounds were characterized as 3-O-(2,3-dimethylbutanoyl)-13-O-dodecanoyl-20-O-tetradecanoylingenol (1), 3-O-decanoyl-20-O-hexanoylingenol (2), 3-O-(2,3-dimethylbutanoyl)-13-O-dodecanoyl-20-O-hexadecanoylingenol (3), and 13-O-dodecanoyl-20-O-hexanoylingenol (4); among these compounds, two (1 and 2) were new metabolites while the rest (3 and 4) were known. The MTT cytotoxicity assay was carried out using amrubicin hydrochloride as a positive control. Compound 1 displayed IC50 as 5.0 and 2.9 μM against RAW and HT-29 cell lines, respectively, which is 5- and 1.5-folds stronger than the control with IC50 values of 25 and 4.36 μM, respectively.

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