Abstract
Products derived from the latex of Euphorbia tirucalli were obtained through hydrolysis and column chromatography, resulting in products rich in triterpenes, ingenol 3-esters (I3E), and other derivatives from hydrolysed latex. These products underwent evaluation for their cytotoxic activity against gastric adenocarcinoma cells (AGS). Triterpene derivatives were synthesised, and the selectivity of each product was assessed. The results were compared with the previously described crude latex. Triterpenes and I3E were analysed in silico for their affinity with the active site of PKCδC1b. The hydrolysed latex (free of I3E) exhibited high cytotoxicity, albeit with reduced selectivity. Triterpenes and acetylated triterpenes were more cytotoxic than I3E, although the latter showed greater selectivity. Euphol benzoates and cinnamates showed no cytotoxicity. I3E demonstrated high affinity for the PKCδC1b. In summary, triterpenes exhibited higher cytotoxicity against AGS cells, while I3E displayed greater selectivity. Hydrolysed latex shows promise as a potential candidate for future gastric cancer treatment.
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