Search results for "Teucrium"
showing 10 items of 45 documents
Cardiovascular effects of the methanol and dichloromethanol extracts fromTeucrium flavum L.
1998
The effects on arterial blood pressure and heart rate of the methanol and dichloromethanol extracts from Teucrium flavumL. were analysed in urethane anaesthetized rats. Mean arterial blood pressure was significantly reduced by the i.v. administration of both extracts to normotensive rats. The methanol extract also induced a decrease in the heart rate, while the dichloromethanol extract lacked any effect on this parameter. © 1998 John Wiley & Sons, Ltd.
Advances on the chemistry of furano-diterpenoids from Teucrium genus
2005
This paper updates the previous reviews, reporting the results published in the last six years on the chemistry of these diterpenoids.
Evaluation of the analgesic action of different fractions from the methanol extract of Teucrium buxifolium L
1998
Different fractions (F-2, F-3, F-5) of the methanol extract from Teucrium buxifolium L. have been tested for their analgesic activity in mice. All of them exhibited peripheral analgesic activity except F-3, Fraction F-5 had the strongest effect and was subjected to a second re-extraction. The subfractions obtained (F-5/3 and F-5/8) exhibited a similar activity to that observed with the whole fraction. (C) 1998 John Wiley & Sons, Ltd.
Evaluation of the analgesic and CNS actions of different fractions from the methanol extract ofTeucrium flavum L.
1998
Different fractions (F.1, F-3, F-5, F-6, F-7, F-8) of the methanol extract from Teucrium flavum L. have been tested for their central nervous system and analgesic activities at a dose of 200 mg/kg. Fractions F-1, F-3 and F-7 showed CNS depressant activity, while fractions F-5, F-6 and F-8 had a slight CNS stimulant action. Fractions F-5, F-6, F-7 and F-8 were responsible for the analgesic activity of the extract.
Evaluation of the acute toxicity, analgesic and CNS activities of different species ofTeucrium genus
1995
Methanol and dichloromethanol extracts of the leaves and stems of four Teucrium species (T. cartaginenses, T. flavum, T. pumillum and T. buxifolium) have been tested for their toxicity, analgesic and central depressor effects. The intraperitoneal administration of the different extracts showed a CNS depressant activity in mice, but they lacked anticonvulsive effects. When tested for analgesic activity none of the extracts increased the threshold of pain thermal stimulus. However, the methanol and dichloromethanol extracts of T. cartaginenses and T. buxifolium species showed a significant analgesic effect in models of pain induced by chemical or mechanical stimulation.
Effects on arterial blood pressure of the methanol extracts from differentTeucriumspecies
1997
Methanol extracts of the leaves and stems of two Teucrium species (T. pumillum L. and T. buxifolium L.) have been tested for their effects on resting arterial blood pressure. Both T. pumillum L. and T. buxifolium L. extracts reduced mean arterial blood pressure in a dose dependent manner when administered i.v. to urethane anaesthetized normotensive rats. © 1997 John Wiley & Sons, Ltd.
Neoclerodane Diterpenoids from Teucrium maghrebinum
2000
Eight neoclerodane diterpenoids were identified in the extract of the aerial parts of Teucrium maghrebinum. Three of these, 12-epi-teucjaponin A (1), 12-epi-montanin D (2), and 12-epi-montanin B (3), are new natural products, whereas five, teucjaponin A, montanin D, 19-deacetylteuscorodol, teusalvin C (4), and montanin B, are already known. These eight compounds form four pairs of epimers at carbon C-12.
Analysis of Essential Oil from Teucrium maghrebinum Greuter et Burdet Growing Wild in Algeria
2009
The chemical composition of the essential oil obtained from aerial parts of Teucrium maghrebinum growing wild in Algeria was analyzed by GC and GC-MS. Among the 66 identified compounds, δ-cadinene (12.7%), germacrene D (11.4%), γ-cadinene (9.5%) and 4-vinyl guaiacol (4.0%) were the most abundant. The oil is strongly characterized by the presence of sesquiterpenes (61.5%), particularly hydrocarbon sesquiterpenes (49.6%).
Neoclerodane Diterpenoids from Teucrium massiliense
1998
A reinvestigation of the diterpene metabolites of Teucrium massiliense L. allowed the isolation of four new neoclerodane derivatives, teumassilenins A-D, together with all the diterpenoids previously reported as constituents of this plant. The structures of the new compounds (1-4) were established by chemical and spectroscopic means. A plausible biogenetic relationship between several of these substances is briefly discussed, and some unpublished physical and spectroscopic data of the previously known diterpenoid teumassin (5) are now reported.
Cardiovascular effects of the methanol and dichloromethanol extracts fromTeucrium cartaginenses L.
1998
Methanol and dichloromethanol extracts of the leaves and stems of Teucrium cartaginensesL. have been tested for their effects on resting arterial blood pressure, heart rate and noradrenaline induced hypertension. Both extracts administered i.v. to urethane anaesthetized normotensive rats reduced mean arterial blood pressure and heart valve, while only the dichloromethanol extract prevented noradrenaline induced hypertension. © 1998 John Wiley & Sons, Ltd.