Results 181 to 190 of about 12,016 (205)

Combretol from Combretum quadrangulare

Journal of the Chemical Society C: Organic, 1966
Combretol, a yellow pigment isolated from Combretum quadrangulare, is shown by mass and ultraviolet spectroscopy to be myricetin 3,3′,4′,5′,7-pentamethyl ether.
Stang Mongkolsuk, F. M. Dean, L. E. Houghton   +2 more
openaire   +1 more source

Combretum fruticosum

1984
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
openaire   +1 more source

Cytotoxic pentacyclic triterpenes from Combretum nigricans

Fitoterapia, 2003
A new pentacyclic triterpene, 11alpha-acetoxy-20,24-epoxy-25-hydroxy-dammar-3-one (1), has been isolated from the African tree Combretum nigricans, together with the known corresponding diol, 20,24-epoxy-11alpha, 25-dihydroxy-dammar-3-one (2). They are responsible, at least in part, for the cytotoxic activity of the methanolic extract of the plant.
Simon, Gentiane, Dewelle, Janique, Nacoulma, Odile, Guissou, Pierre, Kiss, Robert, Daloze, Désiré, Braekman, Jean Claude   +6 more
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Antiulcerogenic activity of Combretum leprosum.

Die Pharmazie, 2009
This study investigates the effects of an ethanolic extract from the stem bark of Combretum leprosum Mart. & Eiche (Combretaceae) on experimental ulcers induced by ethanol and indomethacin and on gastric secretion and mucus content in pylorus-ligated rats. The effects were compared with those of ranitidine and carbenoxolone.
P H M, Nunes, P M S, Cavalcanti, S M P, Galvão, M C C, Martins   +3 more
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Cycloartane triterpenes from Combretum quadrangulare

Phytochemistry, 1998
Abstract In addition to two known flavonoids, kumatakenin and isokaempferide, three new cycloartane triterpenes were isolated from the leaves of Combretum quadrangulare . Their structures were established by the means of 1D and 2D NMR techniques and physical data (MS, IR) as 1α,3β-dihydroxy-cycloart-24-ene-30-carboxylic acid, 1α,3β-dihydroxy ...
Markus Ganzera, Ernst P. Ellmerer-Müller, Hermann Stuppner   +2 more
openaire   +1 more source

Combretum celastroides M. A. Lawson.

2022
Published as part of Monteiro, Francisca, Costa, Esperança Da, Kissanga, Raquel, Costa, José Carlos & Catarino, Luís, 2022, An annotated checklist of the vascular flora of Quiçama National Park, Angola, pp.
Monteiro, Francisca, Costa, Esperança Da, Kissanga, Raquel, Costa, José Carlos, Catarino, Luís   +4 more
openaire   +1 more source

Combretum fruticosum (cover)

1974
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
openaire   +1 more source

Pentacyclic triterpenes from Combretum nigricans

Phytochemistry, 1996
Abstract From the bark of Combretum nigricans , four pentacyclic triterpenes have been isolated and their structures elucidated from spectral data as the known arjungenin and arjunglucoside, a new pentacyclic triterpene, combregenin (2α,3β,6β,19α,23-pentahydroxyolean-12-en-28-oic acid) and a new saponin, combreglucoside (β- d -glucopyranosyl 2α,3β ...
Akino Jossang, Mannan Seuleiman, Eric Maidou, Bernard Bodo   +3 more
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Cell Growth Inhibitor Constituents From Combretum Kraussii

Natural Product Letters, 1993
Abstract New and known combretastatins and their 2′-O-glucosides have been isolated from seeds of Combretum kraussii (Hochst.) (Combreiaceae). They showed in vitro cytoxicity and influenced the tubulin polymerization.
F. Pelizzoni, L. Verotta, C. B. Rogers, R. Colombo, B. Pedrotti, G. Balconi, E. Erba, M. D'Incalci   +7 more
openaire   +2 more sources

Cytotoxic cycloartane-type triterpenes from Combretum quadrangulare

Bioorganic & Medicinal Chemistry Letters, 1998
Seven novel cycloartane-type triterpenes were isolated from Combretum quadrangulare, and their structures were elucidated on the basis of spectral analysis. All these compounds were tested for their cytotoxicity against murine colon 26-L5 carcinoma cells. Methyl quadrangularate B (2) and methyl quadrangularate D (4) exhibited potent cytotoxicity having
Banskota, Arjun H., Tezuka, Yasuhiro, Phung, Le Kim, Tran, Kim Qui, Saiki, Ikuo, Miwa, Yoshihisa, Taga, Tooru, Kadota, Shigetoshi   +7 more
openaire   +2 more sources