SciELO - Scientific Electronic Library Online

 
vol.46 número4SYNTHESIS AND TEM STUDIES OF NICKEL COLLOIDS PREPARED IN NONAQUEOUS SOLVENTSSYNTHESIS OF 1-n-ALKYL-3-METHYL- AND 1-n-ALKYL-3- PHENYL-5-PYRAZOLONES AND FORMYL DERIVATIVES índice de autoresíndice de materiabúsqueda de artículos
Home Pagelista alfabética de revistas  

Servicios Personalizados

Revista

Articulo

Indicadores

Links relacionados

Compartir


Boletín de la Sociedad Chilena de Química

versión impresa ISSN 0366-1644

Resumen

PASTENE, E. R. et al. USO DE ESPECTROSCOPIA DE RMN Y MALDI-TOF MS EN LA ELUCIDACION ESTRUCTURAL DE FLAVONOIDES ANTIOXIDANTES PROVENIENTES DE LA PLANTA MEDICINAL CHILENA Cheilanthes glauca (Cav.) Mett. Bol. Soc. Chil. Quím. [online]. 2001, vol.46, n.4, pp.449-457. ISSN 0366-1644.  http://dx.doi.org/10.4067/S0366-16442001000400009.

Cheilanthes glauca (Cav.) Mett., is a native Chilean species used in popular medicine for the topical treatment of wounds and contusions. A study on the total methanolic extract showed the presence of antioxidants in the ethyl acetate fraction. From this fraction, two known flavonol glycosides were isolated, quercetin-3-O-rhamnoglucoside and kaempferol-3,7-O-dirhamnoside. Both substances are described for the first time in this species. Structural elucidation was carried out by comparison with standard substances, chemical hydrolysis, UV spectra, 1H- and 13C- NMR, COSY 1H-1H, DEPT and MALDI-TOF MS. Only quercetin-3-O-rhamnoglucoside (rutin) showed unspecific in vitro decolourizing activity upon DPPH radical

Palabras clave : Cheilanthes glauca; 1H-NMR; 13C-NMR; MALDI-TOF MS; Flavonoids; Rutin; Kaempferol; Antioxidants.

        · resumen en Español     · texto en Español

 

Creative Commons License Todo el contenido de esta revista, excepto dónde está identificado, está bajo una Licencia Creative Commons