Navegando por Palavras-chave "Styrax camporum"

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    Cytotoxic lignans from the stems of Styrax camporum (Styracaceae)
    (Taylor & Francis Ltd, 2005-06-01) Teles, H. L.; Hemerly, Jefferson Pessoa [UNIFESP]; Pauletti, P. M.; Pandolfi, JRC; Araujo, A. R.; Valentini, SR; Young, MCM; Bolzani, V. D.; Silva, DHS; UNESP; Universidade Federal de São Paulo (UNIFESP); Inst Bot
    An ethanolic extract from the stems of Styrax camporum Pohl (Styracaceae), a plant traditionally used for gastrointestinal diseases, was fractionated and subjected to flash chromatography and afforded two benzofuran lignans, egonol and homoegonol, and one furofuran lignan, (+/-) syringaresinol, which were identified by spectral data interpretation. Their cytotoxic activities against Hep-2 (larynx epidermoid carcinoma), HeLa (human cervix carcinoma) and C6 (rat glioma) cell lines were evaluated using the MTT (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl-2H-tetrazolium bromide) assay at several concentrations for 24 h. Activities could be observed for egonol against C6 (IC50 = 3.2 mu g/mL) and Hep-2 (IC50 = 3.6 mu g/mL) cell lines, and for homoegonol against C6 (IC50 = 4.9 mu g/mL) and HeLa (IC50 =- 5.3 mu g/mL) cells.