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Phototoxic compounds in 3 Dyssodia species (Asteraceae): (with 1 figure) Phyton
Pérez-Amador,MC; Herrera,J; Muñoz,V; Vives,J; García-Jiménez,F.
From the root of Dyssodia tagetoides T. & G. two phototoxic compounds were isolated,a polyacetylene ester and a thiophene ester, which were used as markers of the genus. On the other hand, an intraspecific and interspecific comparison of the chromatografic profiles of D. porophylla (Cav.) Cav. and D. papposa (Vent.) Hitche stems and roots was made. The profiles showed great similarity as well as the spots corresponding to the markers thus establishing a relationship between the 3 species.
Tipo: Info:eu-repo/semantics/article
Ano: 2004 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-56572004000100013
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Essential oil and phototoxic compounds in Clibadium surinamense L. and Montanoa grandiflora D.C. (Asteraceae) Phyton
Pérez-Amador,MC; Muñoz,V; Noyola,A; García-Jiménez,F.
Two Asteraceae species, Clibadium surinamense L. and Montanoa grandiflora D.C., were analyzed to determine the composition of the essential oil and to search for phototoxic compounds. Three parts of the plants were studied, inflorescence, stems and leaves. Intra and interspecific differences were found in the essential oil composition, which was determined by gas chromatography. In the chromatographic profiles, run for phototoxic compounds, spots for these products were present in the Clibadium surinamense extracts, but were absent in Montanoa grandiflora. From the hexane extract of Clibadium surinamense inflorescence 2 new polyacetylene esters were isolated, ichtyothereol capric ester and its derivate tetrahydroichthyothereol-7'- en-miristic ester.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Asteraceae; Phototoxic compounds; Essential oils.
Ano: 2006 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-56572006000100015
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