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13 Αποτελέσματα
Effect of the Chinese herb extract osthol on IL-4-induced eotaxin expression in BEAS-2B cells.
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BACKGROUND
Asthma is an allergic inflammatory disease of the airways. The interaction between bronchial epithelial cells and eosinophils is an important feature of an asthma attack. Eotaxin, an eosinophil-specific C-C chemokine, is a potent chemoattractant involved in the mobilization of eosinophils
Synthesis and biological evaluation of novel osthol derivatives as potent cytotoxic agents.
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Σύνδεση εγγραφή
Natural product, osthol has been found to have important biological and pharmacological roles. The unmet needs in cancer therapeutics makes its derivatization an important and exciting field of research. Keeping this in view, a whole new series of diverse analogues of osthol (1) were prepared
Antitumor effects of Osthol from Cnidium monnieri: an in vitro and in vivo study.
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Cnidium monnieri (L.) Cusson is a Chinese medicine which is used widely by traditional medicine doctors. Osthol is a major bio-activity compound of the herb. In this study, osthol was isolated from C. monnieri and its in vitro and in vivo antitumor effects studied. The results of the in vitro study
Potential Anticancer Properties of Osthol: A Comprehensive Mechanistic Review.
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Cancer is caused by uncontrolled cell proliferation which has the potential to occur in different tissues and spread into surrounding and distant tissues. Despite the current advances in the field of anticancer agents, rapidly developing resistance against different chemotherapeutic drugs and
Click chemistry inspired synthesis and bioevaluation of novel triazolyl derivatives of osthol as potent cytotoxic agents.
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A new series of diverse triazoles linked through the hydroxyl group of lactone ring opened osthol (1) were synthesized using click chemistry approach. All the derivatives were subjected to 3-(4,5-Dimethylthiazol-yl)-diphenyl tetrazoliumbromide (MTT) cytotoxicity screening against a panel of seven
The Nonvolatile and Volatile Metabolites of Prangos ferulacea and Their Biological Properties.
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Prangos ferulacea (L.) Lindl. (Fam. Apiaceae), an orophilous species of eastern Mediterranean and western Asia, possesses a number of biological properties that are worthy of exploitation in different fields. Phytochemical investigations revealed the presence of coumarins, prenyl-coumarins,
Bioactive constituents of Clausena lansium and a method for discrimination of aldose enantiomers.
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Glycosides, clausenosides A and B, and carbazole alkaloids, clausenaline A, claulamine A, and claulamine B, together with 50 known compounds, were isolated from the stems of Clausena lansium. Their structures were determined by means of spectroscopic methods, including that of CD and 1D/2D NMR
Cytotoxic activity of coumarins from the fruits of Cnidium monnieri on leukemia cell lines.
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Cnidii monnieri Fructus [CmF; Cnidium monnieri (L.) Cusson] is used as a tonic agent in traditional Chinese medicine. In a previous Chinese herb-cytotoxicity screening test, the ethanol extract of CmF exhibited strong effects on human leukemia (HL-60), cervical carcinoma (HeLa) and colorectal
Nanoformulations of Coumarins and the Hybrid Molecules of Coumarins with Anticancer Effects.
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Coumarins are the seconder metabolites of some plants, fungi, and bacteria. Coumarins and the hybrid molecules of coumarins are the compounds which have been widely studied for their anticancer effects. They belong to benzopyrone chemical class, more precisely benzo-α-pyrones, where benzene ring is
Isolation, cytotoxicity evaluation and HPLC-quantification of the chemical constituents from Prangos pabularia.
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Phytochemical analysis of the dichloromethane:methanol (1:1) extract of root parts of Prangos pabularia led to the isolation of twelve cytotoxic constituents, viz., 6-hydroxycoumarin (1), 7-hydroxycoumarin (2), heraclenol-glycoside (3), xanthotoxol (4), heraclenol (5), oxypeucedanin hydrate (6),
Antiproliferative effects of isopentenylated coumarins isolated from Phellolophium madagascariense Baker.
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From the leaves of Phellolophium madagascariense Baker (Apiaceae), an endemic herb to Madagascar, three known coumarins (osthol, murraol and meranzin hydrate) have been isolated and identified. This is the first report of these compounds in this species. The structural elucidations were based on the
Inhibitory effect of oxycoumarins isolated from the Thai medicinal plant Clausena guillauminii on the inflammation mediators, iNOS, TNF-alpha, and COX-2 expression in mouse macrophage RAW 264.7.
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In the present study, we investigated the inhibitory effect of the known oxycoumarins poncitrin (3), osthol (4), and xanthoxyletin (5), newly isolated from Clausena guillauminii (Rutaceae), together with the known carbazoles heptaphylline (1) and 7-methoxyheptaphylline (2) on inducible-nitric oxide
Pharmacological and Nutritional Effects of Natural Coumarins and Their Structure-Activity Relationships.
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Coumarins are fused benzene and pyrone ring systems with a wide spectrum of bioactivities, including antitumor, anti-inflammation, antiviral, and antibacterial effects. In this paper, the current development of coumarin-based drugs is introduced, and their structure-activity relationship is
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