Bioassay-guided isolation of apigenin with GABA-benzodiazepine activity from Tanacetum parthenium.
Extracts of Tanacetum parthenium are used in the prophylactic treatment of migraine and have also been used in Danish folk medicine for the treatment of epilepsy. An ethanol extract of T. parthenium showed high affinity for the GABA(A)-benzodiazepine site. An ethanol extract of T. parthenium was fractionated by VLC on silica and preparative C18 HPLC. Each step was monitored with the GABA(A)-benzodiazepine bioassay. The fractionation led to the isolation of apigenin, which may be responsible for CNS-effects of T. parthenium extracts.
Department of Medicinal Chemistry, The Faculty of Pharmaceutical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen, Denmark. ankj@farma.ku.dk
A K
AK
Jäger
K
K
Krydsfeldt
H B
HB
Rasmussen
D000818:Animals; D047310:Apigenin / Q000302:isolation & purification* / Q000494:pharmacology; D002851:Chromatography, High Pressure Liquid; D008519:Medicine, Traditional; D008517:Phytotherapy; D010936:Plant Extracts / Q000494:pharmacology*; D051381:Rats; D011963:Receptors, GABA-A / Q000187:drug effects*; D020903:Tanacetum parthenium / Q000737:chemistry*
D010936:Plant Extracts; D011963:Receptors, GABA-A; D047310:Apigenin