| Sumario: | Phytochemical investigation of Symplocos racemosa resulted in the isolation of a new ethyl substituted glycoside, 1-ethyl brachiose-3'-acetate ( 1 ) along with four known compounds ketochaulmoogric acid ( 2 ), nonaeicosanol ( 3 ), triacontyl palmitate ( 4 ) and methyl triacontanoate ( 5 ). The substitution of ethyl group on 1 was natural because during the course of extraction and purification ethanol was not used. The structural elucidation of the isolated compounds was based primarily on 1D- and 2D-NMR analysis, including COSY, HMQC, and HMBC correlations. The glycoside 1 and triacontyl palmitate ( 4 ) displayed the inhibitory potential against lipoxygenase and urease enzyme, respectively.
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