Flavonoid glycosides and other constituents of Psorospermum androsaemifolium BAKER (Clusiaceae).

Autor: Poumale HM; Department of Organic Chemistry, Faculty of Science, University of Yaounde I, Yaounde, Cameroon. poumale@yahoo.fr, Randrianasolo R, Rakotoarimanga JV, Raharisololalao A, Krebs HC, Tchouankeu JC, Ngadjui BT
Jazyk: angličtina
Zdroj: Chemical & pharmaceutical bulletin [Chem Pharm Bull (Tokyo)] 2008 Oct; Vol. 56 (10), pp. 1428-30.
DOI: 10.1248/cpb.56.1428
Abstrakt: Two new flavonoid glycosides, namely 3'-(2'',4''-dihydroxybenzyloxy)acanthophorin B (1b) and beta,2,3',4,4',6-hexahydroxy-alpha-(alpha-L-rhamnopyranosyl)dihydrochalcone (2) were isolated from the leaves of Psorospermum androsaemifolium together with quercetin (1), acanthophorin B (1a), alpha- (3) and beta-amyrine (3a), vismiaquinone (4), 12-hentriacontanol and hentriacontane. The structures of these secondary metabolites were established using detailed spectroscopic analysis and by comparison with published data. Compounds 1, 1a, 1b, 2, 3, 3a and 4 showed weak antifungal and antibacterial activities.
Databáze: MEDLINE