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Cytotoxic, hepatoprotective and free radical scavenging effects of propolis from Brazil, Peru, the Netherlands and China.
Propolis is a resinous hive product collected by honeybees from various plant sources. The composition of the propolis depends upon the time, vegetation and the area of collection. Thus, qualityExpand
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Hepatoprotective effect of Apocynum venetum and its active constituents.
The leaves of Apocynum venetum L. are used as a tea material in north China and Japan. A water extract (500 mg/kg/day, one week administration) of the leaves of A. venetum showed protective effectsExpand
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Hepatoprotective and anti-Helicobacter pylori activities of constituents from Brazilian propolis.
Propolis is a resinous hive product collected by honeybees from various plant sources. It is extensively used in food, beverage and in folk medicine for treating various ailments and reported to haveExpand
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Quadranosides I-V, new triterpene glucosides from the seeds of Combretum quadrangulare.
Five new triterpene glucosides, quadranosides I-V (1-5), have been isolated from a MeOH extract of the seeds of Combretum quadrangulare, together with 13 known compounds. The structures of compoundsExpand
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Quadranosides VI-XI, six new triterpene glucosides from the seeds of Combretum quadrangulare.
Six new triterpene glucosides, quadranosides VI-XI (1-6), belonging to three different [ursane- (1-4), oleanane- (5) and lupane-type (6)] triterpene classes, have been isolated from a MeOH extract ofExpand
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Hepatoprotective effect of Combretum quadrangulare and its constituents.
The MeOH extract of leaves of Combretum quadrangulare showed significant hepatoprotective effect on D-galactosamine (D-GalN)/lipopolysaccharide (LPS)-induced experimental liver injury in mice and onExpand
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Three new triterpenes from the seeds of Combretum quadrangulare and their hepatoprotective activity.
Three new triterpenes of the lupane type, 2alpha,6beta-dihydroxybetulinic acid (1) and 6beta-hydroxyhovenic acid (2), and an oleanane type, 6beta-hydroxyarjunic acid (3), together with several knownExpand
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Nitric oxide inhibitory isopimarane-type diterpenes from Orthosiphon stamineus of Indonesia.
A methanolic extract of Orthosiphon stamineus yielded six new highly oxygenated isopimarane-type diterpenes, orthosiphols U-Z (1-6), and 15 previously reported diterpenes. The isolated diterpenes allExpand
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Hepatoprotective constituents of the seeds of Combretum quadrangulare.
Hepatoprotective effect of MeOH, MeOH-H2O (1:1) and H2O extracts of Combretum quadrangulare seeds were examined on D-galactosamine (D-GalN)/tumor necrosis factor-alpha(TNF-alpha)-induced cell deathExpand
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Highly-oxygenated isopimarane-type diterpenes from Orthosiphon stamineus of Indonesia and their nitric oxide inhibitory activity.
From the methanolic extract of Indonesian Orthosiphon stamineus, nine new highly-oxygenated isopimarane-type diterpenes [7-O-deacetylorthosiphol B (1), 6-hydroxyorthosiphol B (2),Expand
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