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Bioactive Indole Derivatives from the South Pacific Marine Sponges Rhopaloeides odorabile and Hyrtios sp. ArchiMer
Longeon, Arlette; Copp, Brent R.; Quevrain, Elodie; Roue, Melanie; Kientz, Betty; Cresteil, Thierry; Petek, Sylvain; Debitus, Cecile; Bourguet-kondracki, Marie-lise.
Indole derivatives including bromoindoles have been isolated from the South Pacific marine sponges Rhopaloeides odorabile and Hyrtios sp. Their structures were established through analysis of mass spectra and 1D and 2D NMR spectroscopic data. Their potential inhibitory phospholipase A(2) (PLA(2)), antioxidant and cytotoxic activities were evaluated. The new derivative 5,6-dibromo-L-hypaphorine (9) isolated from Hyrtios sp. revealed a weak bee venom PLA2 inhibition (IC50 0.2 mM) and a significant antioxidant activity with an Oxygen Radical Absorbance Capacity (ORAC) value of 0.22. The sesquiterpene aureol (4), also isolated from Hyrtios sp., showed the most potent antioxidant activity with an ORAC value of 0.29.
Tipo: Text Palavras-chave: Indole derivatives; Bromoindoles; Marine sponge; Rhopaloeides odorabile; Hyrtios sp.; PLA(2) inhibitor; Antioxidant; Cytotoxic.
Ano: 2011 URL: https://archimer.ifremer.fr/doc/00214/32485/30975.pdf
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Synthesis and DPPH scavenging assay of reserpine analogues, computational studies and in silico docking studies in AChE and BChE responsible for Alzheimer's disease BJPS
Yar,Muhammad; Arshad,Muhammad; Farooq,Ariba; Gilani,Mazhar Amjad; Ayub,Khurshid; Ejaz,Asma; Kumar,Anupriya; Ninomiya,Ichiya.
Alzheimer's disease (AD) is a fast growing neurodegenerative disorder of the central nervous system and anti-oxidants can be used to help suppress the oxidative stress caused by the free radicals that are responsible for AD. A series of selected synthetic indole derivatives were biologically evaluated to identify potent new antioxidants. Most of the evaluated compounds showed significant to modest antioxidant properties (IC50 value 399.07 140.0±50 µM). Density Functional Theory (DFT) studies were carried out on the compounds and their corresponding free radicals. Differences in the energy of the parent compounds and their corresponding free radicals provided a good justification for the trend found in their IC50 values. In silico, docking of compounds into...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Alzheimer's disease; Antioxidant compounds; Chronic diseases; Density Functional Theory; Molecular docking; Computational studies; DPPH assay; Indole derivatives; Acetylcholinesterase (AChE); Butyrylcholinesterase (BChE).
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502015000100053
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