Search Results - "Tapondjou, Leon Azefack"

Trifasciatosides A–J, Steroidal Saponins from Sansevieria trifasciata by Teponno, Rémy Bertrand, Tanaka, Chiaki, Jie, Bai, Tapondjou, Léon Azefack, Miyamoto, Tomofumi

“…Four previously unreported steroidal saponins, trifasciatosides A–D (1–4), three pairs of previously undescribed steroidal saponins, trifasciatosides E–J (5a,…”
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Reducing postharvest losses of bean seeds during storage by using essential oil from Mondia whitei (Hook. f.) by Woguem, Verlaine, Fogang, Hervet Paulain Dongmo, Womeni, Hilaire Macaire, Tapondjou, Léon Azefack

“…During storage, Acanthoscelides obtectus causes deterioration of bean seeds and offers favorable conditions for fungi development. To prevent losses, the…”
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Steroidal saponins from the flowers of Dioscorea bulbifera var. sativa by Tapondjou, Léon Azefack, Jenett-Siems, Kristina, Böttger, Stefan, Melzig, Matthias F.

“…Eleven steroidal saponins, dioscoreanosides A–K, along with five known congeners, were isolated from the flowers of Dioscorea bulbifera var. sativa. •We…”
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Steroidal Saponins from Dracaena humilis (Dracaenaceae) and their Chemotaxonomic Significance by Mouzie, Cedric Mbiesset, Ponou, Beaudelaire Kemvoufo, Fouedjou, Romuald Tematio, Teponno, Remy Bertrand, Tapondjou, Leon Azefack

“…A new steroidal saponin, (23S,24S)-spirosta-5,25(27)-diene-1 ,3 ,23,24-tetrol 1-O-((2,3-diacetyl-α-L-rhamnopyranosyl)-(1→2)-[…”
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Bioefficacy of essential and vegetable oils of Zanthoxylum xanthoxyloides seeds against Acanthoscelides obtectus (Say) (Coleoptera: Bruchidae) by Fogang, Hervet Paulain Dongmo, Womeni, Hilaire Macaire, Piombo, Georges, Barouh, Nathalie, Tapondjou, Léon Azefack

“…Experiments were conducted in the laboratory to evaluate the bioefficacy of essential and vegetable oils of Zanthoxylum xanthoxyloides (Rutaceae) against…”
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Acaricidal activity, mode of action, and persistent efficacy of selected essential oils on the poultry red mite (Dermanyssus gallinae) by Tabari, Mohaddeseh Abouhosseini, Rostami, Arash, Khodashenas, Aref, Maggi, Filippo, Petrelli, Riccardo, Giordani, Cristiano, Tapondjou, Léon Azefack, Papa, Fabrizio, Zuo, Yanting, Cianfaglione, Kevin, Youssefi, Mohammad Reza

“…In this work, the essential oils (EOs) from Litchi chinensis, Clausena anisata, Heracleum sphondylium, Pimpinella anisum, Lippia alba, Crithmum maritimum and…”
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A dimeric triterpenoid glycoside and flavonoid glycosides with free radical-scavenging activity isolated from Rubus rigidus var. camerunensis by Nguelefack, Télesphore Benoît, Mbakam, Félicité Hermine Kamga, Tapondjou, Léon Azéfack, Watcho, Pierre, Nguelefack-Mbuyo, Elvine Pami, Ponou, Beaudelaire Kemvoufo, Kamanyi, Albert, Park, Hee-Juhn

“…The aerial part of Rubus rigidus var. camerunensis (Rosaceae) is used to treat respiratory and cardiovascular disorders in the Cameroonian traditional…”
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Cameroonian medicinal plants as potential candidates of SARS-CoV-2 inhibitors by Fouedjou, Romuald Tematio, Chtita, Samir, Bakhouch, Mohamed, Belaidi, Salah, Ouassaf, Mebarka, Djoumbissie, Loris Alvine, Tapondjou, Léon Azefack, Abul Qais, Faizan

“…Coronavirus disease 2019 (COVID-19) is an ongoing pandemic instigated by Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) which changed the daily…”
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In vivo anti-inflammatory effect of a new steroidal saponin, mannioside A, and its derivatives isolated from Dracaena mannii by Tapondjou, Leon Azefack, Ponou, Kemvoufo Beaudelaire, Teponno, Remy Bertrand, Mbiantcha, Marius, Djoukeng, Jules Désiré, Nguelefack, Télesphore Benoit, Watcho, Pierre, Cadenas, Aurelio Gomez, Park, Hee-Juhn

“…A new steroidal saponin, mannioside A ( 1 ), was isolated from the stem bark of Dracaena mannii , together with the known pennogenin ( 2 ), pennogenin-3- O…”
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Clausena anisata and Dysphania ambrosioides essential oils: from ethno-medicine to modern uses as effective insecticides by Pavela, Roman, Maggi, Filippo, Lupidi, Giulio, Mbuntcha, Hélène, Woguem, Verlaine, Womeni, Hilaire Macaire, Barboni, Luciano, Tapondjou, Léon Azefack, Benelli, Giovanni

“…Dysphania ambrosioides (L.) Mosyakin & Clemants (Amaranthaceae) and Clausena anisata (Willd.) Hook. f. ex Benth. (Rutaceae) are two aromatic species…”
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A New Flavonol Glycoside from Tristemma hirtum (Melastomataceae) by Kenfack, Joseph Nandjou, Ponou, Beaudelaire Kemvoufo, Kuhlborn, Jonas, Teponno, Remy Bertrand, Nono, Raymond Ngansop, Fouedjou, Romuald Tematio, Opatz, Till, Park, Hee Juhn, Tapondjou, Leon Azefack

“…Chemical investigation of the plant Tristemma hirtum P. Beauv (Melastomataceae) resulted to the isolation of a new flavonol glycoside named…”
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Quantitative Determination of the Triterpenoids and Total Tannin in Korean Rubus species by HPLC by Kim, Min-Young, Tapondjou, Leon Azefack, Park, Hee-Juhn

“…The triterpenoids contained in four Rubus species (Rosaceae) were quantitatively analyzed using HPLC to select plants with large quantities of niga-ichigoside…”
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Siamoside A: a new C-glycosylated flavone from Senna siamea (Lam.) H. S. Irwin & Barneby (Caesalpiniaceae) by Chedjou, Isaac Nde, Ngouafong, Francis Tatong, Tchuenguem, Roland Tchuenteu, Dzoyem, Jean Paul, Ponou, Beaudelaire Kemvoufo, Teponno, Rémy Bertrand, Barboni, Luciano, Tapondjou, Léon Azefack

“…Phytochemical investigation of the methanol extracts from the leaves and bark of Senna siamea resulted in the isolation of one new flavone C-glycoside:…”
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Muellerilactone and other bioactive constituents of Phyllanthus muellerianus (kuntze) exell by Tsakem, Bienvenu, Eckhardt, Paul, Tchuenguem, Roland Tchuenteu, Ponou, Beaudelaire Kemvoufo, Dzoyem, Jean Paul, Teponno, Rémy Bertrand, Opatz, Till, Barboni, Luciano, Tapondjou, Léon Azefack

“…A new friedelane triterpenoid 3-α-hydroxy-D:A-friedo-oleanan-27,16α-lactone (Muellerilactone) together with sixteen previously reported compounds were isolated…”
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Bioactive Arylnaphthalide Lignans from Justicia depauperata by Tchegnitegni Toussie, Billy, Nguengang, Ruland Tchuinkeu, Mawabo, Isabelle Kamga, Teponno, Rémy Bertrand, Kezetas Bankeu, Jean Jules, Chouna, Jean Rodolphe, Nkenfou, Celine Ngeufeu, Tapondjou, Léon Azefack, Sewald, Norbert, Lenta, Bruno Ndjakou

“…Eleven previously undescribed arylnaphthalide lignans (1–11) together with seven known compounds were isolated from the whole plant of Justicia depauperata…”
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Integracide K: A New Tetracyclic Triterpenoid from Desmodium uncinatum (Jacq.) DC. (Fabaceae) by Tsafack, Borice Tapondjou, Ponou, Beaudelaire Kemvoufo, Teponno, Remy Bertrand, Nono, Raymond Ngansop, Jenett-Siems, Kristina, Melzig, Matthias F, Park, Hee Juhn, Tapondjou, Leon Azefack

“…A new tetracyclic triterpenoid [4,4,24-trimethylcholesta-${\Delta}^{8,9;14,5;24,28}$-trien-$3{\beta},11{\beta},12{\alpha}$-triol-12-acetate, 3-sulfate] sodium…”
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Two new triterpenoid saponins: telephiifoliosides A and B from the roots of Corrigiola litoralis subsp. telephiifolia (Pourr.) Briq by Fouedjou, Romuald Tématio, Ponou, Beaudelaire Kemvoufo, Teponno, Rémy Bertrand, Melzig, Matthias, Tanaka, Chiaki, Miyamoto, Tomofumi, Tapondjou, Léon Azefack

“…The polar fraction of the MeOH extract of the roots of Corrigiola litoralis subsp. telephiifolia (Pourr.) Briq. (Caryophyllaceae) was investigated for its…”
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Manniosides G-J, New Ursane- and Lupane-Type Saponins from Schefflera mannii (Hook.f.) Harms by Tonga, Simionne Lapoupée Kuitcha, Tchegnitegni, Billy Toussie, Siwe-Noundou, Xavier, Tsopmene, Ulrich Joël, Ponou, Beaudelaire Kemvoufo, Dzoyem, Jean Paul, Poka, Madan, Demana, Patrick H, Tapondjou, Léon Azefack, Beukes, Denzil R, Antunes, Edith M, Teponno, Rémy Bertrand

“…Four previously unreported triterpenoid saponins named 3β-hydroxy-23-oxours-12-en-28-oic acid 28- -β- -glucopyranosyl ester (mannioside G) ( ), 23-…”
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Elemane‐Type Sesquiterpene, Acetonide Derived Polyacetylene and Other Constituents from the Whole Plant of Gymnanthemum theophrastifolium (Schweinf. ex Oliv. & Hiern) H.Rob. and Their Chemophenetic Significance by Tafouo Tsakou, Armelle, Laure Ndontsa, Blanche, Carly Nono Nono, Eric, Tseme Wandji, Nadine, Thierry Mbahbou Bitchagno, Gabin, Jules Kezetas Bankeu, Jean, Azefack Tapondjou, Leon, Sewald, Norbert, Ndjakou Lenta, Bruno

“…The chemical investigation of the methanol extract of the whole plant of Gymnanthemum theophrastifolium (Schweinf. ex Oliv. & Hiern) H.Rob. (Asteraceae) led to…”
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Rheediinosides A and B, two antiproliferative and antioxidant triterpene saponins from Entada rheedii by Nzowa, Laurence Kegah, Barboni, Luciano, Teponno, Remy Bertrand, Ricciutelli, Massimo, Lupidi, Giulio, Quassinti, Luana, Bramucci, Massimo, Tapondjou, Léon Azefack

“…Two triterpenoid saponins have been isolated from the seed kernels of Entada rheedii. Their structures have been established using 1D- and 2D-NMR and MS as 3-…”
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