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  1. Article: Pyrroloquinolone A, a new alkaloid and other phytochemicals from Atractylis cancellata L. with antioxidant and anticholinesterase activities

    Badaoui, Mohamed Ibrahim / Alabdul Magid, Abdulmagid / Benkhaled, Mohammed / Bensouici, Chawki / Harakat, Dominique / Voutquenne-Nazabadioko, Laurence / Haba, Hamada

    Natural product research. 2021 Sept. 17, v. 35, no. 18

    2021  

    Abstract: A new alkaloid pyrroloquinolone A (1), along with fifteen known compounds 2–16 were isolated from the petroleum ether, EtOAc and n-BuOH extracts of the whole plant Atractylis cancellata L. Their structures were elucidated on the basis of extensive ... ...

    Abstract A new alkaloid pyrroloquinolone A (1), along with fifteen known compounds 2–16 were isolated from the petroleum ether, EtOAc and n-BuOH extracts of the whole plant Atractylis cancellata L. Their structures were elucidated on the basis of extensive spectroscopic analysis including 1D- and 2D-NMR and HR-ESI-MS techniques. This is the first report of alkaloids in the genus Atractylis. Some of the isolated compounds and extracts were evaluated for their antioxidant potential (scavenging activity of DPPH and ABTS radicals, and reducing Fe⁺³ and Cu⁺² power assays) and acetylcholinesterase and butyrylcholinesterase inhibitory activities. Compounds 8 and 11 showed good antioxidant capacity compared to ascorbic acid, BHA, and BHT used as standards, whereas compounds 1 and 2 exhibited good anticholinesterase activities compared to galantamine used as standard.
    Keywords acetylcholinesterase ; alkaloids ; antioxidant activity ; antioxidants ; ascorbic acid ; cholinesterase ; ethyl acetate ; petroleum ; phytochemicals ; research ; spectral analysis
    Language English
    Dates of publication 2021-0917
    Size p. 2997-3003.
    Publishing place Taylor & Francis
    Document type Article
    ZDB-ID 2185747-7
    ISSN 1478-6427 ; 1478-6419
    ISSN (online) 1478-6427
    ISSN 1478-6419
    DOI 10.1080/14786419.2019.1682575
    Database NAL-Catalogue (AGRICOLA)

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  2. Article: Antioxidant activity-guided isolation of constituents from Euphorbia gaditana Coss. and their antioxidant and tyrosinase inhibitory activities

    Badaoui, Mohamed Ibrahim / Magid, Abdulmagid Alabdul / Voutquenne-Nazabadioko, Laurence / Benkhaled, Mohammed / Harakat, Dominique / Robert, Anthony / Haba, Hamada

    Phytochemical Society of Europe Phytochemistry letters. 2020 Oct., v. 39

    2020  

    Abstract: Two previously unreported compounds, 4-O-(2′′-O-galloyl-β-d-glucopyranosyl)-3,5-dihydroxyacetophenone (1) and 5-isopropyl-2-oxo-3,6-dihydropyran-4-carboxylic acid (2), along with twenty-nine known compounds (3−31) were isolated from the aerial parts of ... ...

    Abstract Two previously unreported compounds, 4-O-(2′′-O-galloyl-β-d-glucopyranosyl)-3,5-dihydroxyacetophenone (1) and 5-isopropyl-2-oxo-3,6-dihydropyran-4-carboxylic acid (2), along with twenty-nine known compounds (3−31) were isolated from the aerial parts of Euphorbia gaditana Coss. Their structures were elucidated based on extensive spectroscopic analysis 1D and 2D-NMR, mass spectrometry HR-ESI-MS, optical rotation [α]D, acid hydrolysis and the comparison of NMR data with those described in literature. The antioxidant activity-guided study was conducted using DPPH and CUPRAC methods started from the extracts to bioactive isolated molecules. Most of the isolates (1-31) showed a good to excellent antioxidant activity compared to the standards BHT and ascorbic acid. Furthermore, 1 and 2 exhibited a moderate tyrosinase inhibitory activity (IC₅₀ 89.78 ± 0.93 and 52.39 ± 0.69 μg/mL, respectively) compared to the standard kojic acid (IC₅₀ 25.23 ± 0.78 μg/mL).
    Keywords 2,2-diphenyl-1-picrylhydrazyl ; Euphorbia ; acetophenones ; acid hydrolysis ; aerial parts ; antioxidant activity ; bioactive compounds ; carboxylic acids ; chemical structure ; copper ; electrospray ionization mass spectrometry ; enzyme inhibition ; isolation techniques ; monophenol monooxygenase ; nuclear magnetic resonance spectroscopy
    Language English
    Dates of publication 2020-10
    Size p. 99-104.
    Publishing place Elsevier Ltd
    Document type Article
    Note golden set
    ISSN 1874-3900
    DOI 10.1016/j.phytol.2020.07.012
    Database NAL-Catalogue (AGRICOLA)

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  3. Article ; Online: Pyrroloquinolone A, a new alkaloid and other phytochemicals from

    Badaoui, Mohamed Ibrahim / Alabdul Magid, Abdulmagid / Benkhaled, Mohammed / Bensouici, Chawki / Harakat, Dominique / Voutquenne-Nazabadioko, Laurence / Haba, Hamada

    Natural product research

    2019  Volume 35, Issue 18, Page(s) 2997–3003

    Abstract: A new alkaloid pyrroloquinolone A ( ...

    Abstract A new alkaloid pyrroloquinolone A (
    MeSH term(s) Alkaloids/isolation & purification ; Alkaloids/pharmacology ; Antioxidants/isolation & purification ; Antioxidants/pharmacology ; Atractylis/chemistry ; Cholinesterase Inhibitors/isolation & purification ; Cholinesterase Inhibitors/pharmacology ; Molecular Structure ; Phytochemicals/isolation & purification ; Phytochemicals/pharmacology ; Plant Extracts/pharmacology ; Quinolones/isolation & purification ; Quinolones/pharmacology
    Chemical Substances Alkaloids ; Antioxidants ; Cholinesterase Inhibitors ; Phytochemicals ; Plant Extracts ; Quinolones
    Language English
    Publishing date 2019-11-07
    Publishing country England
    Document type Journal Article
    ZDB-ID 2185747-7
    ISSN 1478-6427 ; 1478-6419
    ISSN (online) 1478-6427
    ISSN 1478-6419
    DOI 10.1080/14786419.2019.1682575
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

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