Hypargyrin a, a hemiacetalic germacrolide from viguiera hypargyrea (asteraceae). biogenetic implications and biological evaluation Reportar como inadecuado




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Guillermo Delgado ;Journal of the Mexican Chemical Society 2010, 54 (2)

Autor: Raquel Arellano-Martínez

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


Introducción



Journal of the Mexican Chemical Society ISSN: 1870-249X editor.jmcs@gmail.com Sociedad Química de México México Arellano-Martínez, Raquel; Delgado, Guillermo Hypargyrin A, a Hemiacetalic Germacrolide from Viguiera hypargyrea (Asteraceae).
Biogenetic Implications and Biological Evaluation Journal of the Mexican Chemical Society, vol.
54, núm.
2, abril-junio, 2010, pp.
117-121 Sociedad Química de México Distrito Federal, México Available in: http:--www.redalyc.org-articulo.oa?id=47519864009 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 Article J.
Mex.
Chem.
Soc.
2010, 54(2), 117-121 © 2010, Sociedad Química de México ISSN 1870-249X Hypargyrin A, a Hemiacetalic Germacrolide from Viguiera hypargyrea (Asteraceae).
Biogenetic Implications and Biological Evaluation Raquel Arellano-Martíneza and Guillermo Delgadob* a b Facultad de Ciencias Químicas e Ingeniería, Universidad Autónoma del Estado de Morelos.
Av.
Universidad 1001, Cuernavaca 62210, Morelos, México. Instituto de Química de la Universidad Nacional Autónoma de México.
Circuito Exterior, Ciudad Universitaria. Coyoacán 04510, México, D.
F.
delgado@unam.mx Received February 8, 2010; accepted May 28, 2010 Abstract.
A new hemiacetalic germacrolide 6, named hypargyrin A, was isolated from the aerial parts of Viguiera hypargyrea, along with the known compounds (8R,9R)-β-caryophyllene epoxide, entkaur-16-en-19-oic acid (1), hispidulin (2), 8β-epoxyangeloyloxy-14acetoxy-tithifolin (3), 8β-epoxyangeloyloxy-14-hydroxy-tithifolin (4) and budlein B (5).
Spectroscopic analysis of 6 allowed the structural correction of a compound isolated from Blainvillea gayana.
Budlein B (5) can be considered the biogenetic precursor of 6, and two pathways for its formation ...





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