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  1. Article: Two new saponins from Paronychia capitata

    Allaoua, Zina / Benabdelaziz, Imane / Rahmouni, Naima / Bouzidi, Soumia / Silva, Artur M.S. / Benkhaled, Mohammed / Haba, Hamada

    Phytochemistry letters. 2022 Mar. 24,

    2022  

    Abstract: Two new oleanane-type triterpene glycosides, 3˗O˗β˗D˗glucopyranosyl˗28˗O˗ [β˗D˗glucopyranosyl˗(1→2)˗β˗D˗xylopyranosyl˗(1→6)˗β˗D˗glucopyranosyl]medicagenic acid (1) and 3˗O˗β˗D˗glucopyranosyl˗28˗O˗[β˗D˗glucopyranosyl˗(1→6)˗β˗D˗glucopyranosyl˗(1→2)˗ β˗D˗ ... ...

    Abstract Two new oleanane-type triterpene glycosides, 3˗O˗β˗D˗glucopyranosyl˗28˗O˗ [β˗D˗glucopyranosyl˗(1→2)˗β˗D˗xylopyranosyl˗(1→6)˗β˗D˗glucopyranosyl]medicagenic acid (1) and 3˗O˗β˗D˗glucopyranosyl˗28˗O˗[β˗D˗glucopyranosyl˗(1→6)˗β˗D˗glucopyranosyl˗(1→2)˗ β˗D˗xylopyranosyl]oleanolic acid (2), named capitatosides A and B respectively, were isolated from the butanol extract of Paronychia capitata (L.) Lam., along with seven known compounds. The structures of the isolated compounds were established by spectroscopic methods, mainly HRMS, 1D and 2D NMR (¹H, ¹³C, COSY, HSQC, HMBC and NOESY) techniques, whereas those of the known compounds were identified by spectral comparison with reported literature data.
    Keywords Paronychia ; butanol ; oleanolic acid ; plant biochemistry ; saponins
    Language English
    Dates of publication 2022-0324
    Publishing place Elsevier Ltd
    Document type Article
    Note Pre-press version
    ISSN 1874-3900
    DOI 10.1016/j.phytol.2022.03.015
    Database NAL-Catalogue (AGRICOLA)

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  2. Article: A new aryltetralin lignan and other phytoconstituents from Atractylis humilis

    Sifouane, Siham / Benabdelaziz, Imane / Benkhaled, Mohammed / Gómez-Ruiz, Santiago / Carralero, Sandra / Haba, Hamada

    Biochemical systematics and ecology. 2020 June, v. 90

    2020  

    Abstract: Phytochemical research of the whole plant Atractylis humilis (Asteraceae family) led to the isolation of one cyclolignan, namely (8R,7′S,8′S)-9′-β-D-glucopyranosyl-3,4′,9-trihydroxy-3′,4,5,5′-tetramethoxy-2,7′-cyclolignan (1), together with thirteen ... ...

    Abstract Phytochemical research of the whole plant Atractylis humilis (Asteraceae family) led to the isolation of one cyclolignan, namely (8R,7′S,8′S)-9′-β-D-glucopyranosyl-3,4′,9-trihydroxy-3′,4,5,5′-tetramethoxy-2,7′-cyclolignan (1), together with thirteen known phytochemicals 2–14 from the ethyl acetate and n-butanol extracts. The structures of all isolated secondary metabolites 1–14 were elucidated by spectroscopic analysis (1D and 2D-NMR, HR-ESI-MS) and measurement of optical rotation [α]D, whereas the known compounds were described by spectral comparison data with those published in the literature. This is the first report of lignans in the genus Atractylis. Furthermore, the chemotaxonomic significance of isolates was discussed.
    Keywords Asteraceae ; butanol ; chemical constituents of plants ; chemotaxonomy ; ethyl acetate ; lignans ; nuclear magnetic resonance spectroscopy ; phytochemicals ; secondary metabolites ; spectral analysis
    Language English
    Dates of publication 2020-06
    Publishing place Elsevier Ltd
    Document type Article
    ISSN 0305-1978
    DOI 10.1016/j.bse.2020.104018
    Database NAL-Catalogue (AGRICOLA)

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  3. Article ; Online: A new indole alkaloid, antioxidant and antibacterial activities of crude extracts from

    Kherkhache, Hayat / Benabdelaziz, Imane / Silva, Artur M S / Lahrech, Mokhtar Boualem / Benalia, Mokhtar / Haba, Hamada

    Natural product research

    2018  Volume 34, Issue 11, Page(s) 1528–1534

    Abstract: The new acylated indole alkaloid glucoside indole-3-carboxylic acid-(6'- ...

    Abstract The new acylated indole alkaloid glucoside indole-3-carboxylic acid-(6'-
    MeSH term(s) 1-Butanol ; Acetates ; Alkaloids/isolation & purification ; Alkaloids/pharmacology ; Anti-Bacterial Agents/chemistry ; Anti-Bacterial Agents/isolation & purification ; Antioxidants/chemistry ; Antioxidants/isolation & purification ; Flavones ; Indole Alkaloids/isolation & purification ; Indoles ; Lamiaceae/chemistry ; Plant Extracts/chemistry ; Plant Extracts/pharmacology
    Chemical Substances Acetates ; Alkaloids ; Anti-Bacterial Agents ; Antioxidants ; Flavones ; Indole Alkaloids ; Indoles ; Plant Extracts ; indole-3-carboxylic acid (59711R38B0) ; ethyl acetate (76845O8NMZ) ; indole (8724FJW4M5) ; 1-Butanol (8PJ61P6TS3) ; flavone (S2V45N7G3B)
    Language English
    Publishing date 2018-11-16
    Publishing country England
    Document type Journal Article
    ZDB-ID 2185747-7
    ISSN 1478-6427 ; 1478-6419
    ISSN (online) 1478-6427
    ISSN 1478-6419
    DOI 10.1080/14786419.2018.1519817
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article: Antioxidant and antibacterial activities and polyphenolic constituents of Helianthemum sessiliflorum Pers

    Benabdelaziz, Imane / Hamada Haba / Jean-Luc Wolfender / Laurence Marcourt / Mohammed Benkhaled

    Natural product research. 2017 Mar. 19, v. 31, no. 6

    2017  

    Abstract: In this study, the various extracts of aerial parts of Helianthemum sessiliflorum Pers. were examined in vitro for possible source of antioxidants and for antibacterial activity. The antioxidant activity was performed by DPPH radical scavenging method ... ...

    Abstract In this study, the various extracts of aerial parts of Helianthemum sessiliflorum Pers. were examined in vitro for possible source of antioxidants and for antibacterial activity. The antioxidant activity was performed by DPPH radical scavenging method which showed that ethyl acetate extract possessed the best antioxidant potential (IC ₅₀ = 32.75 ± 2.07 μg/mL). The significant linear correlation was realised between the values of the total phenolic/flavonoid content and antioxidant activity of plant extracts. The ethyl acetate and n -butanol extracts showed moderate antibacterial activity. In addition, the phytochemical study of n -butanol extract afforded nine known phenolic compounds (1 – 9). This is the first report of six of them (1 , 3 , 5 – 8) in Cistaceae family. The structural identification of the isolated compounds was achieved using several spectroscopic methods.
    Keywords 2,2-diphenyl-1-picrylhydrazyl ; aerial parts ; antibacterial properties ; antioxidant activity ; antioxidants ; ethyl acetate ; flavonoids ; Helianthemum ; inhibitory concentration 50 ; plant extracts ; spectroscopy
    Language English
    Dates of publication 2017-0319
    Size p. 686-690.
    Publishing place Taylor & Francis
    Document type Article
    ZDB-ID 2185747-7
    ISSN 1478-6427 ; 1478-6419
    ISSN (online) 1478-6427
    ISSN 1478-6419
    DOI 10.1080/14786419.2016.1209669
    Database NAL-Catalogue (AGRICOLA)

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  5. Article ; Online: Antioxidant and antibacterial activities and polyphenolic constituents of Helianthemum sessiliflorum Pers.

    Benabdelaziz, Imane / Marcourt, Laurence / Benkhaled, Mohammed / Wolfender, Jean-Luc / Haba, Hamada

    Natural product research

    2017  Volume 31, Issue 6, Page(s) 686–690

    Abstract: In this study, the various extracts of aerial parts of Helianthemum sessiliflorum Pers. were examined in vitro for possible source of antioxidants and for antibacterial activity. The antioxidant activity was performed by DPPH radical scavenging method ... ...

    Abstract In this study, the various extracts of aerial parts of Helianthemum sessiliflorum Pers. were examined in vitro for possible source of antioxidants and for antibacterial activity. The antioxidant activity was performed by DPPH radical scavenging method which showed that ethyl acetate extract possessed the best antioxidant potential (IC
    MeSH term(s) 1-Butanol ; Acetates ; Anti-Bacterial Agents/pharmacology ; Antioxidants/pharmacology ; Bacteria/drug effects ; Biphenyl Compounds/chemistry ; Cistaceae/chemistry ; Flavonoids/isolation & purification ; Flavonoids/pharmacology ; Free Radical Scavengers/chemistry ; Free Radical Scavengers/pharmacology ; Microbial Sensitivity Tests ; Phenols/isolation & purification ; Phenols/pharmacology ; Picrates/chemistry ; Plant Components, Aerial/chemistry ; Plant Extracts/chemistry ; Plant Extracts/pharmacology ; Polyphenols/chemistry ; Polyphenols/pharmacology ; Solvents
    Chemical Substances Acetates ; Anti-Bacterial Agents ; Antioxidants ; Biphenyl Compounds ; Flavonoids ; Free Radical Scavengers ; Phenols ; Picrates ; Plant Extracts ; Polyphenols ; Solvents ; ethyl acetate (76845O8NMZ) ; 1-Butanol (8PJ61P6TS3) ; 1,1-diphenyl-2-picrylhydrazyl (DFD3H4VGDH)
    Language English
    Publishing date 2017-03
    Publishing country England
    Document type Journal Article
    ZDB-ID 2185747-7
    ISSN 1478-6427 ; 1478-6419
    ISSN (online) 1478-6427
    ISSN 1478-6419
    DOI 10.1080/14786419.2016.1209669
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: New cycloartane-type ester triterpenes from Euphorbia pterococca and biological evaluation.

    Benabdelaziz, Imane / Gómez-Ruiz, Santiago / Benkhaled, Mohammed / Carralero, Sandra / Schenker, Patricia / Salm, Andrea / Gertsch, Jürg / Haba, Hamada

    Fitoterapia

    2018  Volume 127, Page(s) 271–278

    Abstract: From acetonic extract of the whole plant Euphorbia pterococca Brot. (Euphorbiaceae), four new cycloartane-type ester triterpenes named cycloartenyl-2'E,4'E-decadienoate (1), cycloartenyl-2'E,4'Z-decadienoate (2), 24-methylenecycloartanyl-2'E,4'Z- ... ...

    Abstract From acetonic extract of the whole plant Euphorbia pterococca Brot. (Euphorbiaceae), four new cycloartane-type ester triterpenes named cycloartenyl-2'E,4'E-decadienoate (1), cycloartenyl-2'E,4'Z-decadienoate (2), 24-methylenecycloartanyl-2'E,4'Z-tetradecadienoate (3), and 24-oxo-29-norcycloartanyl-2'E,4'Z-hexadecadienoate (4) were obtained along with nine known tetracyclic triterpenes (5-13). Their structures were established mainly by extensive use of spectroscopic techniques, including 1D (
    MeSH term(s) Animals ; Cell Line, Tumor ; Esters/isolation & purification ; Euphorbia/chemistry ; HEK293 Cells ; Humans ; Magnetic Resonance Spectroscopy ; Mice ; Molecular Structure ; Monoacylglycerol Lipases/antagonists & inhibitors ; Nuclear Magnetic Resonance, Biomolecular ; Plant Components, Aerial/chemistry ; Plant Extracts/chemistry ; Plant Roots/chemistry ; RAW 264.7 Cells ; Rats ; Swine ; Triterpenes/isolation & purification ; Trypanosoma cruzi/drug effects
    Chemical Substances Esters ; Plant Extracts ; Triterpenes ; cycloartane (511-64-8) ; ABHD12 protein, human (EC 3.1.1.23) ; Monoacylglycerol Lipases (EC 3.1.1.23)
    Language English
    Publishing date 2018-06
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 412385-2
    ISSN 1873-6971 ; 0367-326X
    ISSN (online) 1873-6971
    ISSN 0367-326X
    DOI 10.1016/j.fitote.2018.02.027
    Database MEDical Literature Analysis and Retrieval System OnLINE

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