References of "Leclercq, Joëlle"
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See detailThe structure of isostrychnopentamine, a bisindole monoterpene alkaloid from Strychnos usambarensis
Tavernier, Dirk; Zhang, Weiguo; Angenot, Luc ULg et al

in Phytochemistry (1987), 26(2), 557-560

The alkaloid isostrychnopentamine has been shown to be epimeric with strychnopentamine at the asymmetric carbon atom of the N-methylpyrrolidin-2-yl group. Its IUPAC name is also given.

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See detailScreening of cytotoxic activities of Strychnos alkaloids ( methods and results)
Leclercq, Joëlle; Gillet, Marie-Claire ULg; Bassleer, Roger et al

in Journal of Ethnopharmacology (1986), 15

The potential cytotoxic activities of 46 alkaloids isolated from different Strychnos species were tested on different cancer or normal cells cultured in vitro. The authors use a relatively simple ... [more ▼]

The potential cytotoxic activities of 46 alkaloids isolated from different Strychnos species were tested on different cancer or normal cells cultured in vitro. The authors use a relatively simple microtest which gives good reproducibility. Most of the active compounds belong to the usambarane skeleton but other structure-activity relationships are being discussed. [less ▲]

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See detailDescription, identification et utilisation du Yumel ( Ecorce de Guatteria gaumeri GREENMAN)
Leclercq, Joëlle; Dehaussy, Hélène; Goblet, Marie-Claire et al

in Journal de Pharmacie de Belgique (1985), 40(4), 251-256

The authors give a survey of the known data and biological studies about the bark and the tincture of Guatteria gaumeri (Yumel). They describe not only methods of micrographic and chromatographic ... [more ▼]

The authors give a survey of the known data and biological studies about the bark and the tincture of Guatteria gaumeri (Yumel). They describe not only methods of micrographic and chromatographic identification of the drug, but also a quantitative determination of the two main constituents: alpha-asarone ( propenylbenzene derivative) and guattegaumerine ( bisbenzylisoquinoleine alkaloid). [less ▲]

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See detailDolichantoside, Main Alkaloid from Stem Bark of Strychnos Tricalysioides
Leclercq, Joëlle; Angenot, Luc ULg

in Planta Medica (1984), 50(5), 457-8

The bark of Strychnos tricalysioides from Cameroon has been studied. The main alkaloid (present in a minute amount) was identified to dolichantoside (TLC, UV, IR and CD) and compared to a reference ... [more ▼]

The bark of Strychnos tricalysioides from Cameroon has been studied. The main alkaloid (present in a minute amount) was identified to dolichantoside (TLC, UV, IR and CD) and compared to a reference compound previously isolated in our laboratory from Strychnos gossweileri root bark. [less ▲]

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See detailAbout Drosera peltata and the standardization of the sundew's tincture ( Tinctura Droserae)
Leclercq, Joëlle; Angenot, Luc ULg

Poster (1984, July)

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See detailA propos du Drosera peltata et de la standardisation de la teinture de Drosera
Leclercq, Joëlle; Angenot, Luc ULg

in Journal de Pharmacie de Belgique (1984), 39(5), 269-274

The authors describe Drosera peltata , an Asiatic species newly appeared on the European marke, and give a method of identification and quantitative determination of plumbagin to standardize the drug and ... [more ▼]

The authors describe Drosera peltata , an Asiatic species newly appeared on the European marke, and give a method of identification and quantitative determination of plumbagin to standardize the drug and mainly the tincture that is used in pharmaceutical preparations against cough. [less ▲]

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