Antioxidant phenolic and quinonemethide triterpenes from Cheiloclinium cognatum.
Phytochemistry
; 65(13): 1977-82, 2004 Jul.
Article
em En
| MEDLINE
| ID: mdl-15280004
The triterpenes, 22beta-hydroxypristimerin and cognatine, were isolated together with the known compounds pristimerin, maytenin, 20alpha-hydroxymaytenin, 22beta-hydroxymaytenin, netzahualcoyol, netzahualcoyondiol and netzahualcoyone from root bark of Cheiloclinium cognatum. The structures of the isolated compounds were elucidated by interpretation of their spectral data, including gHMQC and gHMBC experiments. The isolates were investigated for their radical scavenging abilities through a spectrophotometric assay involving reduction of 2,2-diphenyl-picryl hydrazyl (DPPH).
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Triterpenos
/
Hippocrateaceae
/
Antioxidantes
Idioma:
En
Revista:
Phytochemistry
Ano de publicação:
2004
Tipo de documento:
Article
País de afiliação:
Brasil
País de publicação:
Reino Unido