Sesquiterpene lactones, acyl phenyl propanoids and other constituents from schkuhria pinnata var. wislizeni. antioxidant evaluation Reportar como inadecuado




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Blanca M. Reyes ; María Isabel Chávez ; Rubén A. Toscano ; Guillermo Delgado ;Journal of the Mexican Chemical Society 2009, 53 (3)

Autor: Alejandra León

Fuente: http://www.redalyc.org/


Introducción



Journal of the Mexican Chemical Society ISSN: 1870-249X editor.jmcs@gmail.com Sociedad Química de México México León, Alejandra; Reyes, Blanca M.; Chávez, María Isabel; Toscano, Rubén A.; Delgado, Guillermo Sesquiterpene Lactones, Acyl Phenyl Propanoids and Other Constituents from Schkuhria pinnata var. wislizeni.
Antioxidant Evaluation Journal of the Mexican Chemical Society, vol.
53, núm.
3, julio-septiembre, 2009, pp.
193-200 Sociedad Química de México Distrito Federal, México Available in: http:--www.redalyc.org-articulo.oa?id=47512154017 How to cite Complete issue More information about this article Journals homepage in redalyc.org Scientific Information System Network of Scientific Journals from Latin America, the Caribbean, Spain and Portugal Non-profit academic project, developed under the open access initiative J.
Mex.
Chem.
Soc.
2009, 53(3), 193-200 © 2009, Sociedad Química de México ISSN 1870-249X Article Sesquiterpene Lactones, Acyl Phenyl Propanoids and Other Constituents from Schkuhria pinnata var.
wislizeni.
Antioxidant Evaluation Alejandra León, Blanca M.
Reyes, María Isabel Chávez, Rubén A.
Toscano, and Guillermo Delgado* Instituto de Química de la Universidad Nacional Autónoma de México.
Circuito Exterior, Ciudad Universitaria.
Coyoacán 04510. México, D.
F.
delgado@unam.mx Dedicated to the memory of Prof.
Ernest L.
Eliel Received August 5, 2009; Accepted September 25, 2009 Abstract.
Chemical investigation of aerial parts of Schkuhria pinnata var wislizeni (Asteraceae) allowed the characterization of the sesquiterpene lactones 1, 2 and 5, the flavonoids 3 and 4, and the acyl phenyl propanoids 10 and 11.
Structure 2, named dischkuhriolin, was confirmed as a Diels Alder adduct of 1 as dienophile and a guaianolide as diene.
Spectroscopic analysis of 5 and its diacetyl derivative allowed the structural correction of compounds previously reported from Schkuhria.
2, 10 and 11 are new natural compounds.
Biological assays ind...





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