Results 171 to 180 of about 20,571 (205)
Some of the next articles are maybe not open access.
Acta Crystallographica Section C Crystal Structure Communications, 1997
The title compound, 3-[(2-carboxyethyl)carbonyloxy]-olean-12-en-28-oic acid, C34H5206, was synthesized as a derivative of oleanolic acid in order to improve its solubility and bioavailability. It has been used as an anti-inflammatory and antihepatitis drug in east Asia.
J. Yang, J. W. Quail, Z. Jia
openaire +1 more source
The title compound, 3-[(2-carboxyethyl)carbonyloxy]-olean-12-en-28-oic acid, C34H5206, was synthesized as a derivative of oleanolic acid in order to improve its solubility and bioavailability. It has been used as an anti-inflammatory and antihepatitis drug in east Asia.
J. Yang, J. W. Quail, Z. Jia
openaire +1 more source
Phytochemistry, 2012
Oleanolic acid (3β-hydroxyolean-12-en-28-oic acid) is a pentacyclic triterpenoid compound with a widespread occurrence throughout the plant kingdom. In nature, the compound exists either as a free acid or as an aglycone precursor for triterpenoid saponins, in which it can be linked to one or more sugar chains. Oleanolic acid and its derivatives possess
Jacob, Pollier, Alain, Goossens
openaire +2 more sources
Oleanolic acid (3β-hydroxyolean-12-en-28-oic acid) is a pentacyclic triterpenoid compound with a widespread occurrence throughout the plant kingdom. In nature, the compound exists either as a free acid or as an aglycone precursor for triterpenoid saponins, in which it can be linked to one or more sugar chains. Oleanolic acid and its derivatives possess
Jacob, Pollier, Alain, Goossens
openaire +2 more sources
Oleanolic Acid from Cranberries*
Journal of the American Pharmaceutical Association (Scientific ed.), 1953A modified procedure, involvin decolorization of the ammonium salt, is feescribed for the purification of crude ursolic acid obtained from cranberries. Oleanolic acid was isolated from the mother liquors remaining from the final recrystallization of the purified product.
B Y, WU, L M, PARKS
openaire +2 more sources
Oleanolic Acid in Lardizabala biternata
Journal of Pharmaceutical Sciences, 1961Oleanolic acid was isolated and identified as a sapogenin of a glycosidic fraction from Lardizabala biternata. By means of an alcoholic extraction of the dried and pulverized plant an extract was obtained which yielded a water-soluble glycosidic fraction. Acid hydrolysis of this material gave oleanolic acid which was purified and identified.
M, SILVA, P, MANCINELLI
openaire +2 more sources
Oleanolic acid and ursolic acid stabilize liposomal membranes
Lipids, 1997AbstractThe effects of oleanolic acid (OA) and ursolic acid (UA) on the fluidity and stability of dipalmitoyl phosphatidylcholine (DPPC) liposomal membrane were monitored by measuring the fluorescence polarization of 1,6‐diphenyl‐1,3,5‐hexatriene labeled in the liposomal membrane and the leakage of calcein from the probe‐encapsulated liposomes.
S K, Han +4 more
openaire +2 more sources
Solubilization of oleanolic acid and ursolic acid by cosolvency
Archives of Pharmacal Research, 1997Solubilities of oleanolic acid and ursolic acid in aqueous surfactant solutions, liquid polyethylene glycols (PEG), and solvents of various polarity were measured. The results showed that the solutes were slightly or moderately solubilized in the surfactant solutions and the liquid PEGs.
I J, Jin, Y I, Ko, Y M, Kim, S K, Han
openaire +2 more sources
Seco-glycosides of oleanolic acid fromBeta vulgaris
Phytochemistry, 1994Two new oleanolic acid saponins were isolated from the leaves and roots of Beta vulgaris. Both contained the unusual feature of a 3,4 seco-glycopyranosyl moiety. Their structures were established by a combination of 2D NMR experiments and of Californium plasma desorption mass spectrometry.
G, Massiot +5 more
openaire +2 more sources
Oleanolic acid and ursolic acid: Research perspectives
Journal of Ethnopharmacology, 2005Oleanolic acid and ursolic acid are ubiquitous triterpenoids in plant kingdom, medicinal herbs, and are integral part of the human diet. During the last decade over 700 research articles have been published on their research, reflecting tremendous interest and progress in our understanding of these triterpenoids.
openaire +2 more sources
Pharmacology of oleanolic acid and ursolic acid
Journal of Ethnopharmacology, 1995Oleanolic acid and ursolic acid are triterpenoid compounds that exist widely in food, medicinal herbs and other plants. This review summarizes the pharmacological studies on these two triterpenoids. Both oleanolic acid and ursolic acid are effective in protecting against chemically induced liver injury in laboratory animals.
openaire +2 more sources