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SECONDARY METABOLITES AS WELL AS ANTIOXIDANT AND p-GLUCOSIDASE INHIBITORY POTENTIAL OF Hopea Scaphula ROXB
2012
Turkish Journal of Pharmaceutical Sciences
Four compounds were isolated from the petroleum ether and ethyl acetate extracts of the stem bark of Hopea scaphula Roxb. The structures of the isolated compounds were elucidated as stigmasterol (1), 1,2- dimethoxy-4-allylbenzene (2), 3,4-dimethoxycinnamaldehyde (3) and fi-amyrin (4) by extensive spectroscopic studies. The isolated compounds and crude extracts were subjected to antioxidant screening through free radical scavenging activity by DPPH (1, 1-diphenyl-2-picrylhydrazyl), where
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