Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
5
pubmed:dateCreated
2004-5-28
pubmed:abstractText
Two new compounds have been isolated from the leaves of Hypericum styphelioides. Their structures have been established on the basis of mass spectrometry and 2D NMR techniques as 1,3,5-trihydroxy-2-(2',2'-dimethyl-4'-isopropenyl)cyclopentanylxanthone (1) and 3,5-dihydroxybenzophenon-4-beta-d-glucoside (2). Known compounds 5-O-demethylpaxanthonin (3) and 3-geranyl-1-(3-methylbutanoyl)phloroglucinol (4) were also isolated and characterized. Compounds 1-4 were evaluated for their antioxidative properties in Trolox equivalent antioxidant activity (TEAC) and chemiluminescence (CL) assays.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
May
pubmed:issn
0163-3864
pubmed:author
pubmed:issnType
Print
pubmed:volume
67
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
869-71
pubmed:dateRevised
2011-11-17
pubmed:meshHeading
pubmed:year
2004
pubmed:articleTitle
Antioxidative constituents from the leaves of Hypericum styphelioides.
pubmed:affiliation
Center of Pharmaceutical Chemistry (CQF), 200 & 21, Atabey, Playa, PO Box 16042, Apartado 6990, La Habana, Cuba.
pubmed:publicationType
Journal Article