Publications by authors named "Paulo B A Loureiro"

Article Synopsis
  • Five new lignanamides and ten known amides were extracted from the roots' chloroform extract, with new compounds identified through NMR and mass spectrometry.
  • The absolute configuration of one compound was determined using ECD experiments and quantum mechanical calculations.
  • The anti-inflammatory effects of these compounds were tested on macrophages, showing that all reduced nitric oxide levels, while one compound did not significantly affect IL-10 levels, indicating potential anti-inflammatory properties.
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Seven new abietane diterpenoids, comprising medusanthol A-G (-, , -) and two previously identified analogs ( and ), were isolated from the hexane extract of the aerial parts of The structures of the compounds were elucidated by HRESIMS, 1D/2D NMR spectroscopic data, IR spectroscopy, NMR calculations with DP4+ probability analysis, and ECD calculations. The anti-neuroinflammatory potential of compounds - was evaluated by determining their ability to inhibit the production of nitric oxide (NO) and the proinflammatory cytokine TNF-α in BV2 microglia stimulated with LPS and IFN-γ. Compounds - and exhibited decreased NO levels at a concentration of 12.

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species are frequently implicated in the development of both superficial and invasive fungal infections, which can impact vital organs. In the quest for novel strategies to combat fungal infections, there has been growing interest in exploring synthetic and semi-synthetic products, particularly chromone derivatives, renowned for their antimicrobial properties. In the analysis of the antifungal activity of the compound ()-benzylidene-chroman-4-one against , in silico and laboratory tests were performed to predict possible mechanisms of action pathways, and in vitro tests were performed to determine antifungal activity (MIC and MFC), to verify potential modes of action on the fungal cell membrane and wall, and to assess cytotoxicity in human keratinocytes.

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