Publications by authors named "Ainaa Nadiah Abd Halim"

Article Synopsis
  • A study on the stem bark resulted in the identification of one triterpenoid and four xanthones, plus the synthesis of five new rubraxanthone derivatives through Williamson etherification.
  • The antibacterial testing of crude extracts, isolated compounds, and synthesized derivatives showed moderate to active bacteriostatic effects.
  • The structure-activity relationship analysis found that specific groups like prenyl and hydroxy enhance bacterial inhibition, while adding an alkyl chain can reduce effectiveness due to steric hindrance.
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Chemical modification of active scaffolds from natural products has gained interest in pharmaceutical industries. Nevertheless, the metabolites extraction is time-consuming while the lead is frequently mismatched with the receptor. Here, the diazo coupling approach was introduced to generate a series of vanillin derivatives featuring halogenated azo dyes ().

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In searching for drugs from natural product scaffolds has gained interest among researchers. In this study, a series of twelve halogenated thiourea ( chemical modification of aspirin (a natural product derivative) and evaluated for cytotoxic activity against nasopharyngeal carcinoma (NPC) cell lines, HK-1 via MTS-based colorimetric assay. The cytotoxicity studies demonstrated that halogens at position of showed promising activity against HK-1 cells (IC value ≤15 µM) in comparison to cisplatin, a positive cytotoxic drug (IC value =8.

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