Search Results - "L.A. Tapondjou"

Efficacy of powder and essential oil from Chenopodium ambrosioides leaves as post-harvest grain protectants against six-stored product beetles by Tapondjou, L.A., Adler, C., Bouda, H., Fontem, D.A.

“…Powder and essential oil obtained from dry ground leaves of Chenopodium ambrosioides were tested under laboratory conditions (25±1°C, 70–75% r.h.) for their…”
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Bio-guided isolation of potential antimicrobial and antioxidant agents from the stem bark of Trilepisium madagascariense by Teke, G.N., Kuiate, J-R., Kueté, V., Teponno, R.B., Tapondjou, L.A., Tane, P., Giacinti, G., Vilarem, G.

“…This study describes the activity-guided isolation of antimicrobial and antioxidant agents from Trilepisium madagascariense stem bark. The methanol crude…”
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Analgesic and anticonvulsant effects of extracts from the leaves of Kalanchoe crenata (Andrews) Haworth (Crassulaceae) by Nguelefack, T.B., Nana, P., Atsamo, A.D., Dimo, T ., Watcho, P., Dongmo, A.B., Tapondjou, L.A., Njamen, D., Wansi, S.L., Kamanyi, A.

“…Kalanchoe crenata Andr. (Crassulaceae) is a fleshy herbaceous plant used in the African traditional medicine as remedies against otitis, headache,…”
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Effect of essential oils from leaves of Ageratum conyzoides, Lantana camara and Chromolaena odorata on the mortality of Sitophilus zeamais (Coleoptera, Curculionidae) by Bouda, H, Tapondjou, L.A, Fontem, D.A, Gumedzoe, M.Y.D

“…Ageratum conyzoides, Chromolaena odorata, and Lantana camara, are common weed species in Cameroon. Essential oil extracts from their leaves were tested for…”
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Two new tryptophan derivatives from the seed kernels of Entada rheedei: Effects on cell viability and HIV infectivity by Nzowa, L.K., Teponno, R.B., Tapondjou, L.A., Verotta, L., Liao, Z., Graham, D., Zink, M.-C., Barboni, L.

“…Two new tryptophan derivatives, N-sulfonyl-L-tryptophan (tryptorheedei A) (1) and 3-(N-sulfonylindolyl)-D-lactic acid (tryptorheedei B) (2) together with the…”
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Antimicrobial diterpenoid alkaloids from Erythrophleum suaveolens (Guill. perr.) Brenan by F.N. Ngounou, R.N. Manfouo, L.A. Tapondjou, D. Lontsi, V. Kuete, V. Penlap, F.X. Etoa, M-A.L. Dubois, B.L. Sondengam

“…An investigation of the stem bark of Erythrophleum suaveolens (Guill. & Perr.) Brenan yielded the known amide norcassaide (1) and a new diterpenoid alkaloid…”
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Constituents isolated from Polyscias fulva by Mitaine-Offer, A.C, Tapondjou, L.A, Lontsi, D, Sondengam, B.L, Choudhary, M.I, Atta-ur-Rahman, Lacaille-Dubois, M.A

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Insecticidal activities of essential oil of Callistemon viminalis applied as fumigant and powder against two bruchids by Ndomo, A.F, Tapondjou, L.A, Ngamo, L.T, Hance, T

“…The fumigant and contact toxicity of essential oil (EO) extracted from the leaves of Callistemon viminalis and its aromatized clay powder (ACP) was evaluated…”
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Saponins from Cussonia bancoensis and their inhibitory effects on nitric oxide production by Tapondjou, L.A, Lontsi, D, Sondengam, B.L, Shaheen, F, Choudhary, M.I, Atta-ur-Rahman, Heerden, F.R. van, Park, H.J, Lee, K.T

“…Two new triterpenoid saponins (1 and 2) were isolated from the stem bark of Cussonia bancoensis together with the known stigmasterol, ursolic acid,…”
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Constituents isolated from Polysciasfulva by Mitaine-Offer, A.-C., Tapondjou, L.A., Lontsi, D., Sondengam, B.L., Choudhary, M.I., Atta-ur-Rahman, Lacaille-Dubois, M.-A.

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Reactions of 2,3,19-trihydroxyurs-12-triterpenoids: Pinacol rearrangement of methyl 2α,3β,19α-trihydroxyurs-12-en-28-oate by Tapondjou, L.A, Ngounou, F.N., Lontsi, D., Sondengam, B.L., Connolly, J.D.

“…Pinacol rearrangement of the title group of compounds has been investigated and the structures of the adducts elucidated. Three different A-ring carbonylated…”
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Constituents of the leaves of Eucalyptus saligna by Mitaine-Offer, Anne-Claire, Djoukeng, Jules Désiré, Tapondjou, Léon Azefack, Bouda, Hamilton, Lerche, Holger, Lontsi, David, Lacaille-Dubois, Marie-Aleth

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Glycoside derivatives of scopoletin and β-sitosterol from Hymenodictyon floribundum by Mitaine-Offer, A.-C, Tapondjou, L.A, Djoukeng, J.D, Bouda, H, Lacaille-Dubois, M.-A

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