作者
Oluwasesan M Bello, Abiodun B Ogbesejana, M Osibemhe
发表日期
2018
期刊
Journal of Applied Sciences and Environmental Management
卷号
22
期号
3
页码范围
373-378
简介
In this study, two iridoids ie agnuside (1) and bartioside (2) were isolated from Vitex grandifolia for the first time. These potent flavonoids were purified using fractionation and were separated by Sephadex LH 20, Silica gel 60, RP C-18 and Diaion HP-20 columns. Their structure was elucidated using FTIR, 1D and 2D NMR data, these were further evaluated for anti-inflammatory and antileishmania effects. Agnuside, isolated for the first time from V. grandifolia exhibited good activity against NF-kB assay with IC 50 (ug/mL) of 8.9 while bartsioside showed an IC 50 (ug/mL) of 12. Agnuside (1), an iridoid showed the highest IC 50 (μg/mL) of 5.38 and corresponding IC 90 (μg/mL) of 7.07 against L. donovani (intracellular amastigotes in THP1 cells). Positive standards were employed in these studies. The results allowed us to establish the relationship between the structure and the activities on the basis of the different patterns of substitution, particularly hydroxylation. This study gave credence to the view that there is
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