Isolation of New Cytotoxic Metabolites from Cleome droserifolia Growing in Egypt

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dc.AffiliationOctober University for modern sciences and Arts (MSA)
dc.contributor.authorEzzat, Shahira M
dc.contributor.authorAbdel Motaal, Amira
dc.date.accessioned2019-10-19T10:39:22Z
dc.date.available2019-10-19T10:39:22Z
dc.date.issued2012
dc.descriptionMSA Google Scholar
dc.description.abstractThe sulforhodamine B (SRB) assay was used to assess the cytotoxicity of the aqueous (AqEx) and ethanolic (AlEx) extracts, respectively, of the aerial parts of Cleome droserifolia (Forssk.) Del. against two human cancer cell lines, breast (MCF7) and colon (HCT116) adenocarcinoma. AqEx exhibited higher cytotoxic activity, thus its four subfractions, namely n-hexane (HxFr), chloroform (ClFr), ethyl acetate (EtFr), and n-butanol (BuFr) fractions, were also tested. Purifi cation of the more active ClFr and EtFr yielded nine compounds. Six terpenoids, guai-7(11),8-diene (C1), 1-hydroxy-guai-3,10(14)-diene (C2), 18-hydroxydollabela- 8(17)-ene (C3), (24E)-stigmasta-5,8-dien-3β-ol (C4), teucladiol [1α,5β-guai-10(14)- ene-4β,6β-diol] (C5), and buchariol (4,10-epoxy-6α-hydroxyguaiane) (C6), were isolated from ClFr and three fl avonol glycosides, isorhamnetin-3-O-β-D-glucoside (F1), quercetin- 3`-methoxy-3-O-(4``-acetylrhamnoside)-7-O-α-rhamnoside (F2), and kaempferol-4`-methoxy- 3,7-O-dirhamnoside (F3), were isolated from EtFr. Compounds C3 and F2 are new in nature. The isolated compounds were identifi ed using various spectroscopic methods (UV, IR, 1H NMR,13C NMR, HMQC, HMBC, and COSY). Compounds C1, C3, F2, and F3 showed signifi cant cytotoxic activities against the two tested cell lines comparable to those of the anticancer drug doxorubicin®. The new compound C3 was the most active as it had the lowest IC50 values, (1.9  0.08) and (1.6  0.09) μg/ml corresponding to 6.5 and 5.4 μM, against MCF7 and HCT116 cells, respectively.en_US
dc.description.sponsorshipZeitschrift für Naturforschungen_US
dc.description.urihttps://www.scimagojr.com/journalsearch.php?q=14954&tip=sid&clean=0
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dc.identifier.doihttps://doi.org/
dc.identifier.otherhttps://doi.org/
dc.identifier.urihttps://cutt.ly/itwhSZZ
dc.language.isoenen_US
dc.publisherZeitschrift für Naturforschungen_US
dc.relation.ispartofseriesZ. Naturforsch.;67
dc.subjectUniversity of Cleome droserifoliaen_US
dc.titleIsolation of New Cytotoxic Metabolites from Cleome droserifolia Growing in Egypten_US
dc.typeArticleen_US

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