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1.
Pharmazie ; 63(8): 611-4, 2008 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-18771012

RESUMO

Phytochemical investigation of air-dried powdered roots of Artemisia monosperma growing in Egypt afforded two new compounds; 6-hydroxy-7,8-dimethoxycoumarin (I) and 5-acetyl-2-[1'-(hydroxymethyl)ethyl]-2,3-dihydrobenzo[b]furan (IV), in addition to the known compounds; 6-hydroxy-5,7-dimethoxycoumarin (fraxinol) (II), 5-hydroxy-6,7-dimethoxycoumarin (tomentin) (III) and methyl-beta-D-fructofuranoside (V), obtained for the first time from the plant. Chemical structures of the isolated compounds were assigned based on different physical, chemical and spectroscopic techniques including UV, IR, MS, 1D- and 2D-NMR spectra. Furthermore, antimicrobial activity of different extracts of roots was carried out.


Assuntos
Artemisia/química , Artemisia/classificação , Bactérias/efeitos dos fármacos , Espectroscopia de Ressonância Magnética , Testes de Sensibilidade Microbiana , Extratos Vegetais/farmacologia , Raízes de Plantas/química , Espectrometria de Massas por Ionização por Electrospray , Espectrofotometria Infravermelho , Espectrofotometria Ultravioleta
5.
Planta Med ; 64(7): 632-4, 1998 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-17253304

RESUMO

A chloroform extract of the roots of the Egyptian Salvia lanigera Poir. afforded two new orthoquinones, lanigerone (8-hydroxy-3-isopropyl-7-methyl-1,2-naphthoquinone) and salvigerone (methyl 1,10-seco-5(10),6,8,13-abietatetraene-11,12-dion-1-oate) together with two known diterpenoids, arucadiol and pisiferal. Structural assignments of the new compounds were based on spectroscopic methods (UV, IR, MS, ID- and 2D-NMR).

7.
Planta Med ; 61(6): 559-60, 1995 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-8824952

RESUMO

Roots of Salvia lanigera Poir. yielded a new icetexane [10,12-dihydroxy-9(10-->20)-abeo-8,11,13-abietatriene], named lanigerol, which had activity (MIC 1 mg/ml) against Gram-positive bacteria.


Assuntos
Abietanos , Antibacterianos/farmacologia , Diterpenos/farmacologia , Plantas/química , Antibacterianos/química , Diterpenos/química , Bactérias Gram-Positivas/efeitos dos fármacos , Espectroscopia de Ressonância Magnética , Espectrometria de Massas/métodos
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