Search Results - "Emmanuel Pegnyemb, Dieudonné"

Synthesis and Biological Evaluation of Four New Ricinoleic Acid-Derived 1- O -alkylglycerols by Pemha, René, Kuete, Victor, Pagès, Jean-Marie, Pegnyemb, Dieudonné Emmanuel, Mosset, Paul

“…A series of novel substituted 1- -alkylglycerols (AKGs) containing methoxy ( ), -difluoro ( ), azide ( ) and hydroxy ( ) group at 12 position in the alkyl…”
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Secondary metabolites of the leaves of Tricalysia atherura N. Hallé (Rubiaceae) and their potential antiplasmodial activity by Djikam Sime, Gwladys, Mbabi Nyemeck, Norbert, Zintchem, Auguste Abouem A, October, Natasha, Missi, Marius Balemaken, Farooq, Rabia, Khan, Khalid Mohammed, Ngono Bikobo, Dominique Serge, Choudhary, Muhammad Iqbal, Pegnyemb, Dieudonné Emmanuel

“…One monoterpene indole alkaloid, atheruramine (1) bearing an ether bridge linking, one hydrobenzoin derivative, tricalydioloside (2) and two ursane-type…”
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Antimicrobial and cytotoxic activities of indole alkaloids and other constituents from the stem barks of Rauvolfia caffra Sond (Apocynaceae) by Bitombo, Andre Nehemie, Zintchem, Auguste Abouem A., Atchadé, Alex de Théodore, Moni Ndedi, Esther Del Florence, Khan, Afsar, Ngono Bikobo, Dominique Serge, Pegnyemb, Dieudonné Emmanuel, Bochet, Christian G.

“…Twenty indole alkaloids, among which two undescribed ones named rauvolfianoids A (1) and B (2), were isolated from the stem barks of Rauvolfia caffra Sond…”
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Antibacterial and cytotoxic activities of undescribed cassiaric acid and other constituents from Cassia arereh stem barks by Missi, Marius Balemaken, Evina, Jean Noel, Zintchem, Auguste Abouem A, October, Natasha, Bona, Angela, Moela, Pontsho, Betote Diboué, Patrick Hervé, Ngono Bikobo, Dominique Serge, Pegnyemb, Dieudonné Emmanuel

“…A new lupane-type triterpene, 2α,3β-dihydroxylupan-29-oic acid (1), and one new ceramide derivative:…”
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Aporphine Alkaloids from Triclisia dictyophylla Diels by pH-Zone Refining Countercurrent Chromatography by Kamto, Eutrophe Le Doux, Mendonça, Simony C., Abouem A Zintchem, Auguste, Tiam, Eric Robert, Pegnyemb, Dieudonné Emmanuel, Leitão, Gilda Guimarães

“…A new dimeric aporphine alkaloid, biscocsarmine, 2 , together with lirioferine, 1 , and cocsarmine, 3 , were isolated from the ethanol extract of the stems of…”
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In Vitro and In Silico Potential Inhibitory Effects of New Biflavonoids from Ochna rhizomatosa on HIV-1 Integrase and Plasmodium falciparum by Messi, Angélique Nicolas, Bonnet, Susan Lucia, Owona, Brice Ayissi, Wilhelm, Anke, Kamto, Eutrophe Le Doux, Ndongo, Joseph Thierry, Siwe-Noundou, Xavier, Poka, Madan, Demana, Patrick H., Krause, Rui W. M., Ngo Mbing, Joséphine, Pegnyemb, Dieudonné Emmanuel, Bochet, Christian G.

“…The aim of this study was to identify bioactive secondary metabolites from Ochna rhizomatosa with potential inhibitory effects against HIV and Plasmodium…”
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Experimental and computational studies of an antiplasmodial derivative of allantoin; antimycobacterial essential oil from Cordia batesii WERNHAM (Boraginaceae) by Tiam, Eric Robert, Bikobo, Dominique Serge Ngono, Ndassa, Ibrahim Mbouombouo, Nyemeck II, Norbert Mbabi, A Zintchem, Auguste Abouem, Ayong, Lawrence, Diboué, Patrick Hervé Betote, Ndjakou, Bruno Lenta, Mbing, Joséphine Ngo, Pegnyemb, Dieudonné Emmanuel

“…Background Chemical and pharmacological investigations were performed on the stems of Cordia batesii (Boraginaeae); chemical studies included quantum…”
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Cytotoxic Acacic Acid Glycosides from the Roots of Albizia coriaria by Noté, Olivier Placide, Mitaine-Offer, Anne-Claire, Miyamoto, Tomofumi, Paululat, Thomas, Mirjolet, Jean-François, Duchamp, Olivier, Pegnyemb, Dieudonné Emmanuel, Lacaille-Dubois, Marie-Aleth

“…Two new oleanane-type saponins, coriariosides A (1) and B (2), along with a known saponin, gummiferaoside C (3), were isolated from the roots of Albizia…”
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Antitubercular evaluation of root extract and isolated phytochemicals from Lophira lanceolata against two resistant strains of Mycobacterium tuberculosis by Nkot, Jeanne Louise, Ngono Bikobo, Dominique Serge, Abouem A Zintchem, Auguste, Nyemeck, Norbert Mbabi, Moni Ndedi, Esther Del Florence, Betote Diboué, Patrick Hervé, Pegnyemb, Dieudonné Emmanuel, Bochet, Christian G., Koert, Ulrich

“…Context: The roots of Lophira lanceolata Van Tiegh. Ex Keay (Ochnaceae) have numerous medicinal values in the Central African region. Even though the MeOH…”
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New acylated triterpenoid saponins from the roots of Acacia polyacantha Willd. (Fabaceae) by Atangana, Jean Faustin, Messi, Lin Marcellin, Haddad, Mohamed, Mbing, Joséphine Ngo, Boyogueno Begoude, Aime-Didier, Pegnyemb, Dieudonné Emmanuel, Choudhary, Muhammad Iqbal, Noté, Olivier Placide

“…In our continuing search of saponins from the plants of Fabaceae family, phytochemical investigation of the roots of Acacia polyacantha, led to the isolation…”
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Spectral aliasing: a super zoom for 2D-NMR spectra. Principles and applications by Njock, Gaétan Bayiha Ba, Pegnyem, Dieudonné Emmanuel, Bartholomeusz, Trixie Ann, Christen, Philippe, Vitorge, Bruno, Nuzillard, Jean-Marc, Shivapurkar, Rupali, Foroozandeh, Mohamadali, Jeannerat, Damien

“…The NMR methodology based on spectral aliasing developed at the University of Geneva is reviewed. Different approaches aimed at increasing the resolution in…”
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A New Triterpenoid Saponin from Albizia zygia Induced Apoptosis by Reduction of Mitochondrial Potential Status in Malignant Melanoma Cells by Simo, Line Made, Messi, Lin Marcellin, Mbing, Joséphine Ngo, Muller, Christian D, Boyom, Fabrice Fekam, Begoudé, Aime-Didier Boyogueno, Pegnyemb, Dieudonné Emmanuel, Haddad, Mohamed, Noté, Olivier Placide

“…In our ongoing research program on the proapoptotic function of saponins, two previously undescribed saponins, named zygiaosides E (1: ) and F (2: ), were…”
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New antiplasmodial piperazine alkaloid derivatives from Rauvolfia mannii Stapf. (Apocynaceae) by Djipmegne, Daniela Ntomi, Kinyok, Mc Jésus, Abouem A Zintchem, Auguste, Bitombo, André Néhémie, Ferron, Solenn, Ngono Bikobo, Dominique Serge, Tomasi, Sophie, Pegnyemb, Dieudonné Emmanuel

“…The stem bark extract of Rauvolfia mannii (Apocynaceae) was submitted to chemical and antiparasitic investigations. Chemical analyses resulted in the isolation…”
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Triterpenoid saponins and others glycosides from the stem barks of Pancovia turbinata Radlk by Moffi Biang, Armand Emmanuel, Messi, Lin Marcellin, Le Doux Kamto, Eutrophe, Simo, Line Made, Lavedan, Pierre, Vedrenne, Marc, Mbing, Josephine Ngo, Pegnyemb, Dieudonné Emmanuel, Haddad, Mohamed, Noté, Olivier Placide

“…In our continuing search of saponins from the plant of Sapindaceae family, phytochemical investigation of the stem barks of Pancovia turbinata Radlk., led to…”
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Synthesis of halogenated 1-O-alkylglycerols from ricinoleic acid derivatives by Momha, René, Pegnyemb, Dieudonné Emmanuel, Mosset, Paul

“…Resistance to the existing drugs and increasing numbers of diseases result in identifying new drug candidates with new forms of activity. As marine organisms…”
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A lupeol derivative and other isolates with antiplasmodial activity from the stem root of Rauvolfia mannii Stapf. (Apocynaceae) by Zoua, Fred Alain, Ntomi Djipmegne, Daniela, Kinyok, Mc Jésus, Abouem A Zintchem, Auguste, Bitombo, André Néhémie, Dongmo Zeukang, Rostanie, Ferron, Solenn, Ngono Bikobo, Dominique Serge, Tomasi, Sophie, Pegnyemb, Dieudonné Emmanuel

“…is a plant from western and eastern areas of African continent and is widely used in folk medicine for the treatment of various diseases including malaria…”
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Glycosides of polygalacic acid from the stem barks of Piper guineense Schum and Thonn by Le Doux Kamto, Eutrophe, Noté, Olivier Placide, Kinyok, Mc Jesus, Wilhelm, Anke, Mbing, Joséphine Ngo, Antheaume, Cyril, de Théodore Atchadé, Alex, Pegnyemb, Dieudonné Emmanuel, Ndinteh, Derek Tantoh, Haddad, Mohamed, Bonnet, Susan L.

“…In a continuation of our study on constituents of P. guineense now focusing on the search for saponins, phytochemical investigation of the n-BuOH fraction of…”
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Antileishmanial activity of long chain alkyl benzene and other constituents from seeds of Sesamum indicum. L (Pedaliaceae) by Ma'mag, Larissa Kom, Zintchem, Auguste Abouem A, Atchadé, Alex de Théodore, Kopa Kowa, Théodora, Tchinda Tiabou, Alembert, Bikobo, Dominique Serge Ngono, Pegnyemb, Dieudonné Emmanuel

“…The methanolic extract of the waste seeds of L. (Pedaliaceae) was subjected to chromatographic fractionation; it led to the isolation of an alkyl benzene…”
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Triterpenoid saponins from the stem barks of Chytranthus klaineanus Radlk. ex Engl by Biang, Armand Emmanuel Moffi, Kamto, Eutrophe Le Doux, Simo, Line Made, Antheaume, Cyril, Lavedan, Pierre, Vedrenne, Marc, Noté, Olivier Placide, Pegnyemb, Dieudonné Emmanuel, Mbing, Joséphine Ngo, Haddad, Mohamed

“…[Display omitted] •Three new triterpenoid saponins, named Klaineanosides A–C were isolated from the stem of Chytranthus klaineanus.•Their structures were…”
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Secondary metabolites from Triclisia gilletii (De Wild) Staner (Menispermaceae) with antimycobacterial activity against Mycobacterium tuberculosis by Tiam, Eric Robert, Ngono Bikobo, Dominique Serge, Abouem A Zintchem, Auguste, Mbabi Nyemeck, Norbert, Moni Ndedi, Esther Del Florence, Betote Diboué, Patrick Hervé, Nyegue, Maximilienne Ascension, Atchadé, Alex de Théodore, Emmanuel Pegnyemb, Dieudonné, Bochet, Christian G., Koert, Ulrich

“…Triclisinone (2), a new ochnaflavone derivative, was isolated from the aerial parts of Triclisia gilletii, along with known drypemolundein B (1) and eight…”
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