RESUMO
Six compounds have been isolated from the methanol extract of the aerial parts of Gnidia involucrata (Thymelaeaceae). They were identified as 2,3,4',5,6-pentahydroxybenzophenone-4-C-glucoside and 2,4',6-trihydroxy-4-methoxybenzophenone-2-O-glucoside, together with mangiferin, kaempferol-3-O-glucoside, yuankanin and manniflavanone by chemical and spectroscopic means. The structures of three additional C-glycosyl flavones--vitexin, isovitexin and isoorientin--were determined on-line by LC/UV/APCI-MSn analysis of the crude extract.
Assuntos
Aracnídeos/química , Benzofenonas/química , Glicosídeos/isolamento & purificação , Animais , Glicosídeos/química , Estrutura Molecular , Análise EspectralRESUMO
Three phenylpropanoids, myristicin [1], elemicin [2], and trans-isoelemicin [3], together with two furanocoumarins, oxypeucedanin [4] and oxypeucedanin hydrate [5], have been isolated from the leaves of Diplolophium buchanani by a separation strategy involving the almost exclusive use of centrifugal partition chromatography. All five compounds were antifungal in a tlc bioautography test using Cladosporium cucumerinum. Compounds 1-4 exhibited larvicidal activity against Aedes aegypti.
Assuntos
Aedes , Antifúngicos/isolamento & purificação , Inseticidas/isolamento & purificação , Plantas/química , Animais , Antifúngicos/química , Antifúngicos/farmacologia , Cromatografia/métodos , Cromatografia em Gel , Inseticidas/química , Larva , Estrutura MolecularRESUMO
Three sinapoyl glycosides have been isolated from the roots of Polygala virgata. The structures were established on the basis of UV, mass 1H and 13C NMR spectral data, including homonuclear and heteronuclear 2D shift correlation and selective INEPT experiments. alpha-D-(3-O-Sinapoyl)fructofuranosyl-alpha-D-(3-O-acetyl-6-O-s inapoyl)glucopyranoside and beta-D-(3,O-sinapoyl)fructofuranosyl-alpha-D-(4-O-acetyl-6-O-si napoyl)glucopyranoside are new natural products, whereas beta-D-(3-O-sinapoyl)fructofuranosyl-alpha-D-(6-O-sinapoyl) glucopyranoside has already been reported from other plants.
Assuntos
Ácidos Cumáricos/isolamento & purificação , Plantas/química , Sequência de Carboidratos , Ácidos Cumáricos/química , Ésteres , Espectroscopia de Ressonância Magnética , Dados de Sequência Molecular , Estrutura MolecularAssuntos
Antifúngicos/isolamento & purificação , Dioxolanos/isolamento & purificação , Dioxóis/isolamento & purificação , Álcoois Graxos/isolamento & purificação , Plantas Medicinais/análise , Antifúngicos/farmacologia , Dioxolanos/farmacologia , Di-Inos , Álcoois Graxos/farmacologia , Testes de Sensibilidade MicrobianaRESUMO
Traditional Healers [THs] and Traditional Birth Attendants [TBAs] are doing a good job in promoting primary health care to the rural population. This chapter discusses how traditional medicine is incorporated into PHC programming by the government
Assuntos
Medicina , Tocologia , Atenção Primária à SaúdeRESUMO
The aerial parts of VERNONIA GLABRA afforded in addition to vernolepin, vernodalin and vernomenin, four further sesquiterpene lactones derived from vernolepin ( 1), two germacranolides and together with vernodalol the corresponding lactone 9. From VERNONIA SCORPIOIDES two further glaucolides ( 14) and ( 15) were isolated. The structure of the tiglate ( 16) is revised. The structure were elucidated by spectroscopic methods.
RESUMO
The molluscicidal and fungicidal properties of DIOSPYROS USAMBARENSIS root bark have been attributed to the naphthoquinone 7-methyljuglone. In addition, the dimeric naphthoquinones isodiospyrin and mamegakinone and 2 artefacts, 2-methoxy- and 3-methoxy-7-methyljuglone have been isolated.
RESUMO
The diterpenoids colensenone ( 1) and colensanone ( 2) have been isolated from the leaf extracts of Cassia petersiana Bolle.
