This study aims at characterization of the anti-cancer active compounds separated from stems and branches of Sambucus williamsii var. coreana Nakai (Caprifoliaceae). Bioactivity-guided fractionation of ethanol extracts from the S. williamsii was isolated of three triterpenoid compounds. S. williamsii fractions showed superior growth inhibitory activity against three cancer cells (HCT116, A549 and MDA-MB231). Active fraction was isolated and analyzed and led to the identification of three active triterpenoid compounds using HPLC, NMR, and LC-MS spectrometer, their structures were established as betulinic acid (1), oleanolic acid (2) and ursolic acid (3). The results of this study performed with S. williamsii will be helpful to develop new and efficient anti-cancer agents. Also, this research was supported the previous separations and isolations studies on active ingredients of S. williamsii.
The aim of this study was to developed HPLC simultaneous analysis method for the determination of Caffeoylquinic acid isolated from the leaf of Eribotrya japonica Lindl. extract. The phenolic compounds in E. japonica leaves were isolated and identified by HPLC, NMR, Mass etc. The quantitative analysis was carried out HPLC-DAD using C18 column with gradient elution of water and acetonitrile at 280 nM for 60 min. The method was successfully validated by specificity, LOD (linearity, limit of detection), LOQ (limit of quantification), precision and recovery. The three phenolic compounds were isolated from E. japonica leaves including 5-Caffeoylquinic acid (5-CQA), 4-Caffeoylquinic acid (4-CQA) and 3-Caffeoylquinic acid (3-CQA). In a quantitative analysis of three phenolic compounds were 3-CQA 7.82-14.48 µg/mL, 4-CQA 3.75-12.58 µg/mL and 5-CQA 3.60-7.82 µg/mL using the standard chemicals, respectively. The developed HPLC validation method would be applicable for simultaneous quantitative analysis of phenolic compounds in E. japonica leaves extracts.
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