Chemical constituents of Eugenia catharinae and their antioxidant activity
Nine compounds were isolated from the leaves of Eugenia catharinae, namely monomethyl olivetol (1), β-sitosterol (2), stigmasterol (3), uvaol (4), erythrodiol (5), rotundic acid (6), quercetin (7), catechin (8) and myricitrin (9). The structures of 1-9 were established through analysis of their spec...
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Published in | Natural product research Vol. 30; no. 22; pp. 2624 - 2628 |
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Main Authors | , , , , , |
Format | Journal Article |
Language | English |
Published |
England
Taylor & Francis
16.11.2016
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Subjects | |
Online Access | Get full text |
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Summary: | Nine compounds were isolated from the leaves of Eugenia catharinae, namely monomethyl olivetol (1), β-sitosterol (2), stigmasterol (3), uvaol (4), erythrodiol (5), rotundic acid (6), quercetin (7), catechin (8) and myricitrin (9). The structures of 1-9 were established through analysis of their spectroscopic (
1
H and
13
C NMR) and spectrometric (MS) data. Compounds 1 and 6 are reported the first time in the Eugenia genus. In addition, these data were compared with those reported in the literature. The antioxidant activity of plant samples and compounds was measured using the DPPH radical scavenging assay. Flavonoids 7, 8, 9 and the ethanolic extract showed the best results, with IC
50
values of 20.94 μM, 44.20 μM, 30.01 μM and 58.82 μg/mL, respectively. |
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Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 1478-6419 1478-6427 |
DOI: | 10.1080/14786419.2015.1131981 |