Zobrazeno 1 - 10
of 17
pro vyhledávání: '"Jean Watchueng"'
Autor:
Bathelemy Ngameni, Jean Watchueng, Fabrice Fekam Boyom, Felix Keumedjio, Bonaventure T. Ngadjui, Jiri Gut, B.M. Abegaz, Philip J. Rosenthal
Publikováno v:
ARKIVOC, Vol 2007, Iss 13, Pp 116-123 (2007)
Externí odkaz:
https://doaj.org/article/71f57ac8f3484a07a8b1100568c7bd6f
Autor:
Bathelemy Ngameni, Mohamed Touaibia, Anissa Belkaid, Pantaleon Ambassa, Jean Watchueng, Ramesh Patnam, Bonaventure T. Ngadjui, Borhane Annabi, René Roy
Publikováno v:
ARKIVOC, Vol 2007, Iss 9, Pp 91-103 (2006)
Externí odkaz:
https://doaj.org/article/f7d6baaa19c240d59c7f44e65ec034f4
Autor:
Pierre Kamnaing, Apollinaire Tsopmo, Jean Watchueng, Jin-Ming Gao, Yasuo Konishi, Olov Sterner
Publikováno v:
Canadian Journal of Chemistry. 87:397-400
A minor novel 1,7-naphthyridine alkaloid with an unprecedented skeleton, named anisopusine (1), was isolated from the CH2Cl2 soluble materials of an acetone extract of the bark of Anisopus mannii (Asclepiadaceae) together with four known compounds 5
Autor:
Bonaventure T. Ngadjui, Philip J. Rosenthal, Jiri Gut, Felix Keumedjio, Berhanu M. Abegaz, Jean Watchueng, Fabrice Fekam Boyom, Bathelemy Ngameni
Publikováno v:
ARKIVOC, Vol 2007, Iss 13, Pp 116-123 (2007)
The ever widening level of Plasmodium falciparum resistance to antimalarials has led to the search of alternative therapies. In this context, any resources that can help alleviate the burden of the deadly malaria; including the search for new plant-d
Autor:
Jude D. Bigoga, Victor Kuete, Jean Watchueng, Véronique Penlap Beng, Bathelemy Ngameni, Bonaventure Ngadjui Tchaleu, Ingrid Konga Simo, François-Xavier Etoa, Robertine Nzesse Kapguep
Publikováno v:
Journal of Ethnopharmacology. 112:271-277
The methanolic extract (DAT), fractions (FRS) and four flavonoids, namely Gancaonin Q (1), Stipulin (2), Angusticornin B (3) and Bartericin A (4), isolated from the twigs of Dorstenia angusticornis (Moraceae), were tested for their in vitro antimicro
Autor:
Ramesh Patnam, Anissa Belkaid, Jean Watchueng, René Roy, Pantaleon Ambassa, Borhane Annabi, Mohamed Touaibia, Bathelemy Ngameni, Bonaventure T. Ngadjui
Publikováno v:
ARKIVOC, Vol 2007, Iss 9, Pp 91-103 (2006)
Chalcones and their analogs were extracted from the twigs of Dorstenia barteri and investigated for their capacity to inhibit matrix metalloproteinase (MMP)-2 secretion from brain tumor- derived U87 glioblastoma cells. Among all tested compounds, pot
Autor:
Jean Watchueng, Clement O. Adewunmi, John A. O. Ojewole, T. K. Adenowo, N. O. Omisore, Berhanu M. Abegaz, Ezekiel Olugbenga Iwalewa, Bonaventure T. Ngadjui
Publikováno v:
Brazilian Journal of Medical and Biological Research v.38 n.7 2005
Brazilian Journal of Medical and Biological Research
Associação Brasileira de Divulgação Científica (ABDC)
instacron:ABDC
Brazilian Journal of Medical and Biological Research, Vol 38, Iss 7, Pp 1087-1094 (2005)
Brazilian Journal of Medical and Biological Research, Volume: 38, Issue: 7, Pages: 1087-1094, Published: JUL 2005
Brazilian Journal of Medical and Biological Research
Associação Brasileira de Divulgação Científica (ABDC)
instacron:ABDC
Brazilian Journal of Medical and Biological Research, Vol 38, Iss 7, Pp 1087-1094 (2005)
Brazilian Journal of Medical and Biological Research, Volume: 38, Issue: 7, Pages: 1087-1094, Published: JUL 2005
Dorstenia barteri and D. convexa extracts and some isolated components of the former were investigated for effectiveness against Trichomonas gallinarum and compared with quercetin and quercitrin. The antioxidant activity of the extracts/compounds was
Autor:
Bathelemy Ngameni, Felix Keumedjio, Berhanu M. Abegaz, Jean Watchueng, Ingrid Konga Simo, Bonaventure T. Ngadjui
Publikováno v:
Phytochemistry. 66:687-692
The twigs of Dorstenia angusticornis and Dorstenia barteri var. subtriangularis yielded 16 compounds. Two novel diprenylated chalcones: 3,5′-di-(2-hydroxy-3-methylbut-3-enyl)-4,2′,4′-trihydroxychalcone, 3, 4-(2,2-dimethylpyrano)-3′-(2-hydroxy
Autor:
Gabriel N. Folefoc, Berhanu M. Abegaz, Jean Watchueng, Bonaventure T. Ngadjui, Barthelemy Ngameni
Publikováno v:
Phytochemistry. 65:427-432
The twigs of Dorstenia barteri var. subtriangularis yielded three diprenylated chalcones: (−)-3-(3,3-dimethylallyl)-5′-(2-hydroxy-3-methylbut-3-enyl)-4,2′,4′-trihydroxychalcone, (+)-3-(3,3-dimethylallyl)-4′,5′-[2‴-(1-hydroxy-1-methyleth
Autor:
Jin-Ming Gao, Yasuo Konishi, Faustinus K. Yeboah, Jean Watchueng, Pierre Kamnaing, Taira Kiyota
Publikováno v:
Journal of chromatography. A. 1218(20)
Paclitaxel was purified using high-performance displacement chromatography (HPDC) technique, but not by the mechanism of HPDC. On small scale, paclitaxel was extracted with methanol from dry needles of Taxus canadensis and was enriched by extracting