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Abstract

From L. racemosa leaves eight compounds were isolated: myricetin (1), quercetin (2), myricetin 3-O-α-L-rhamnopyranoside (3), myricetin 3-O-(2"-O-galloyl-α-L-rhamnopyranoside) (4), myricetin 3-O-(3"-Ogalloyl-α-L-rhamnopyranoside) (5), 3-Omethylellagic acid (6), (3S,5R,6S,7E)-3,5,6- trihydroxy-7-megastigmen-9-one (7) and gallic acid (8). Their chemical structures were unambiguously elucidated by analysis of 1D and 2D NMR and high resolution ESI mass spectroscopic data, as well as by comparison with those reported in the literature. The α- glucosidase inhibition was evaluated on isolated compounds. Among them, 1, 4, 5, 6 and 8 exhibited good activities with the IC50 values in the range of 1.3-19.3 µM.



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Article Details

Issue: Vol 1 No T4 (2017)
Page No.: 20-26
Published: Dec 31, 2017
Section: Original Research
DOI: https://doi.org/10.32508/stdjns.v1iT4.494

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Copyright: The Authors. This is an open access article distributed under the terms of the Creative Commons Attribution License CC-BY 4.0., which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

 How to Cite
Nguyen, P., Nguyen, T., Nguyen, D., Nguyen, M., & Nguyen, P. (2017). Some compounds isolated from leaves of Lumnitzera racemosa growing in Vietnam. VNUHCM Journal of Natural Sciences, 1(T4), 20-26. https://doi.org/https://doi.org/10.32508/stdjns.v1iT4.494

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