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guaianolide/chrysanthemum
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9 resultados
Monomeric and Dimeric Cytotoxic Guaianolide-Type Sesquiterpenoids from the Aerial Parts of Chrysanthemum indicum.
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Twelve new guaianolide-type sesquiterpenoids (1-12) and five known guaianolide derivatives (13-17) were isolated from an aqueous ethanol extract of the aerial parts of Chrysanthemum indicum. Their structures were determined through spectroscopic data analysis. The absolute configurations of the new
1,10-seco guaianolide-type sesquiterpenoids from Chrysanthemum indicum
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ABSTACTA chemical investigation of the whole plant of traditional Chinese medicine, Chrysanthemum indicum L., led to the discovery of six guaianolide-type sesquiterpenoids 1-6 with a 1,10-splited skeleton. The structure of the new compound 1 was established by extensive analysis
Highly Oxidized Guaianolide Sesquiterpenoids with Potential Anti-inflammatory Activity from Chrysanthemum indicum.
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Ten new highly oxidized monomeric (1-8) and dimeric guaianolides (9 and 10), along with two known guaianolide derivatives (11 and 12), were isolated from the aerial parts of Chrysanthemum indicum using a bioassay-guided fractionation procedure. The new compounds were characterized by the basic
A new cytotoxic guaianolide from Chrysanthemum boreale.
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A new cytotoxic guaianolide was isolated from Chrysanthemum boreale Makino. The structure of guaianolide was elucidated as 8-acetoxy-4,10-dihydroxy-2,11(13)-guaiadiene-12,6-olide (1). Compound 1 exhibited cytotoxic activity (IC(50)< or =4 microg/ml) against all five human cancer cell lines tested.
Suppression of inflammatory responses by handelin, a guaianolide dimer from Chrysanthemum boreale, via downregulation of NF-κB signaling and pro-inflammatory cytokine production.
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The anti-inflammatory activity of handelin (1), a guaianolide dimer from Chrysanthemum boreale flowers, was evaluated in vivo, and the effects on mediators nitric oxide (NO), prostaglandin E2 (PGE2), tumor necrosis factor-α (TNF-α), and interleukin-1β (IL-1β) and the nuclear factor-κB (NF-κB) and
New guaianolides from leaves and stems of Chrysanthemum boreale.
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The 8-acetoxy-2-methoxy-10-hydroxy-3,11(13)-guaiaden-12,6-olide 1 and 8,10-diacetoxy-2-methoxy-3,11(13)-guaiadiene-12,6-olide 2 were isolated from Chrysanthemum boreale Makino. Compound 1 inhibited the etoposide-induced apoptosis in U 937 cells with an IC50 value 8.6 microg/mL.
A new guaianolide as apoptosis inhibitor from Chrysanthemum boreale.
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The 8-O-acetyl-3,10-dihydroxy-4(15),11(13)-guaiadien-12,6-olide, named borenolide, was isolated from Chrysanthemum boreale M. Borenolide inhibits the etoposide-induced apoptosis in U937 cell with an IC(50) value of 6.2 microg/ml. Structural assignment was based on NMR-spectroscopic methods and X-ray
Chrysanthemum allergy III. Identification of the allergens.
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Experimental and chemical studies in guinea pigs on contact allergy caused by Chrysanthemum indicum L. (Chrysanthemum of the florists) led to the isolation of several sesquiterpene lactones. From the crude extract of dried flowers 12 fractions were obtained of which four gave strong reactions on
Structural analogues of cumambrin B from the flower of Chrysanthemum boreale.
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The structural analogues of cumambrin B (1, 2, 3, 4) were isolated from the flower of Chrysanthemum boreale Makino. The structures of compounds were determined by two-dimensional 1H-1H COSY and 13C-1H COSY spectra with the aid of homonuclear and heteronuclear double resonance experiment. The
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