Publications by authors named "Dina M Hal"

The chemical profiles of both () aerial parts and roots extracts were evaluated with LC-ESI-TOF-MS/MS analysis. Twenty-four compounds were detected. Among them, some are detected in both the aerial parts and the roots extracts, and others were detected in the aerial parts only.

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Phytochemical study of the ethyl acetate root extract of has resulted in the isolation of a new saponin, Zygo-albuside D (), along with two known compounds; (3-O-[β-D-quinovopyranosyl]-quinovic acid) (), which is first reported in the root, and catechin (), first reported in the genus. Their chemical structures were established by NMR and high-resolution mass spectrometry (HRMS). The new saponin () exhibited promising cytotoxicity with IC values of 3.

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The current work demonstrates a comparative study between aerial and root parts of L. The total phenolic (TPC) and flavonoid content (TFC), in addition to the antioxidant activity, of the crude extracts were investigated, where the aerial parts revealed a higher value overall. By means of UV-VIS and HPLC, rutin and caffeic acid were detected and then quantified as 5.

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Chemical investigation of the crude extract of the aerial part of L. () led to the isolation of a new saponin, Zygo-albuside (), together with seven known compounds, one of them (caffeic acid, compound ) is reported in the genus for the first time. NMR (1D and 2D) and mass spectrometric analysis, including high-resolution mass spectrometry (HRMS), were utilized to set up the chemical structures of these compounds.

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Article Synopsis
  • * This is the first time these compounds have been reported in this species, and holospiniferoside showed promising anticancer effects against the MCF-7 human breast cancer cell line, with an IC value of 20.6 µM, which is close to the effectiveness of cisplatin (IC of 15.3 µM).
  • * Further studies indicated that holospiniferoside interacts strongly with
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Bioactivity-guided fractionation of a methanolic extract of the Red Sea cucumber and LC-HRESIMS-assisted dereplication resulted in the isolation of four compounds, three new cerebrosides, spiniferosides A (), B (), and C (), and cholesterol sulfate (). The chemical structures of the isolated compounds were established on the basis of their 1D NMR and HRMS spectral data. Metabolic profiling of the extract indicated the presence of diverse secondary metabolites, mostly hydroxy fatty acids, diterpenes, triterpenes, and cerebrosides.

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