Abstract
Successive extraction method of dried fruits of Phaleria macrocarpa had afforded chloroform, ethyl acetate and ethanol crude extracts. Two benzophenone derivatives which are 2,4,4'-trihydroxy-6-methoxybenzophenone (1) and 4,4'-dihydroxy-2methoxybenzophenone-6-O-β-D-glucopyranoside (2) were isolated from the ethyl acetate crude extract. The structures of these compounds were elucidated by spectroscopic techniques using Infrared spectroscopy (IR), 1D (1H, 13C, DEPT), 2D (COSY, HMQC, HMBC) NMR spectroscopy and mass spectrometry. The cytotoxic activity of the crude extracts and benzophenones were tested against human breast carcinoma cell line (MCF-7). MTT assay method was applied to measure the viability of cells at eight different concentrations. The ethyl acetate crude extract was showed higher cytotoxicity activity with IC50 value 126.67 μg/mL compare with ethanol extract (218.33 μg/mL) and chloroform extract (278.33 μg/mL). Meanwhile, benzophenone (1) and benzophenone (2) were exhibited potent cytotoxic properties with IC50 values 141.00 μg/mL and 166.00 μg/mL, respectively.
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