methyl ether/nekrozė

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Biological effects of anthramycin methyl ether. I. Acute intestinal necrosis.

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Anti-inflammatory activity of hispidol A 25-methyl ether, a triterpenoid isolated from Ponciri Immaturus Fructus.

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The anti-inflammatory activity of hispidol A 25-methyl ether (hispidol A 25-Me ether), a triterpenoid isolated from Ponciri Immaturus Fructus, was studied in lipopolysaccharide (LPS)-stimulated RAW264.7 murine macrophages. It was revealed that hispidol A 25-Me ether dose-dependently inhibits nitric

In vitro antiviral activity of red alga, Polysiphonia morrowii extract and its bromophenols against fish pathogenic infectious hematopoietic necrosis virus and infectious pancreatic necrosis virus.

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Our previous investigation revealed that 80% methanolic extract of the red alga Polysiphonia morrowii has significant antiviral activities against fish pathogenic viruses, infectious hematopoietic necrosis virus (IHNV) and infectious pancreatic necrosis virus (IPNV). The present study was conducted

In vitro anti-inflammatory effects of quercetin 3-O-methyl ether and other constituents from Rhamnus species.

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The anti-inflammatory activities of the isolated flavonoids, quercetin 3-O-methyl ether (1), kaempferol (2), and quercetin (3), of Rhamnus nakaharai, and anthraquinone, frangulin B (4), of Rhamnus formosana, were assessed in vitro by determining their inhibitory effects on the chemical mediators

Synthesis and effects on cell viability of flavonols and 3-methyl ether derivatives on human leukemia cells.

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Flavonoids are polyphenolic compounds which display an array of biological activities and are considered potential antitumor agents. Here we evaluated the antiproliferative activity of selected synthetic flavonoids against human leukemia cell lines. We found that 4'-bromoflavonol (flavonol 3) was

Two new zinniol-related phytotoxins from Alternaria solani.

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Bioassay-guided purification of the organic crude extract of Alternaria solani resulted in the isolation of three metabolites responsible for causing necrosis on potato leaves. These phytotoxins were identified as 2-(2",3"-dimethyl-but-1-enyl)-zinniol (1), 8-zinniol methyl ether (2). and 8-zinniol

Elmenols C-H, new angucycline derivatives isolated from a culture of Streptomyces sp. IFM 11490.

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Chemical investigations of the ethyl acetate extract of Streptomyces sp. IFM 11490 have led to the isolation of six new angucycline metabolites, named elmenols C-H (1-6), along with the previously reported elmonin (7) and elmenols A (8) and B (9). The known LS1924A (10), 6-deoxy-8-methylrabelomycin

Acute lung injury induced by a commercial leather conditioner.

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Following a formulation change, a leather conditioner was involved in a 1992 nationwide outbreak of respiratory illness. We investigated the composition and toxicity of the conditioner produced before (previous product) and after (new product) the disease outbreak. The new product induced tachypnea,

Flavonoids eupatorin and sinensetin present in Orthosiphon stamineus leaves inhibit inflammatory gene expression and STAT1 activation.

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Cytokines and other inflammatory mediators, such as prostaglandin E₂ (PGE₂) and nitric oxide (NO) produced by cyclooxygenase-2 (COX-2) and inducible nitric oxide synthase (iNOS), respectively, activate and drive inflammation and therefore serve as targets for anti-inflammatory drug development.

The 2-aminogluconate isomer of rhizobium sin-1 lipid A can antagonize TNF-alpha production induced by enteric LPS.

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The naturally occurring lipopolysaccharide (LPS) from Rhizobium sin-1, a nitrogen-fixing bacterial species, can prevent the induction of the tumor necrosis factor TNF-alpha induced by enteric LPS. The proximal saccharide moiety of R. sin-1 lipid A can exist in two forms, namely as a

Induction of caspase-8 and death receptors by a new dammarane skeleton from the dried fruits of Forsythia koreana.

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A new naturally occurring compound based on the dammarane skeleton, i.e. cabralealactone 3-acetate-24-methyl ether, was isolated from the aqueous methanolic extract of Forsythia koreana fruits, along with eight known compounds: cabralealactone 3-acetate, ursolic acid, arctigenin, arctiin, phillyrin,

NTP Toxicology and Carcinogenesis Studies of Methyleugenol (CAS NO. 93-15-2) in F344/N Rats and B6C3F1 Mice (Gavage Studies).

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Methyleugenol is used as a flavoring agent in jellies, baked goods, nonalcoholic beverages, chewing gum, candy, pudding, relish, and ice cream. It is also used as a fragrance in perfumes, creams, lotions, detergents, and soaps. Methyleugenol has also been used as an insect attractant in eradication

NTP Toxicology and Carcinogenesis Studies of o-Nitroanisole (CAS No. 91-23-6) in F344 Rats and B6C3F1 Mice (Feed Studies).

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o-Nitroanisole is used as an intermediate for the preparation of o-anisidine and in the manufacture of azo dyes. Toxicology and carcinogenesis studies were conducted by administering o-nitroanisole (>99% pure) in the diet to groups of male and female F344 rats and B6C3F1 mice for 14 days, 13 weeks,

Characterization of phytotoxin producing Alternaria species isolatedfrom sesame leavesand their toxicity.

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Sesame (Sesamum indicum L.), is an important oilseed crop in the tropics and subtropics, referred as “Queen of Oilseeds” owing to its high cooking quality and medicinal value. Sesame production, particularly in India, has been declining since last decade and ‘Leaf blight’ caused by Alternaria spp.

Albiflorin inhibits the formation of THP-1-derived foam cells through the LOX-1/NF- κB pathway.

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BACKGROUND Foam cells are characteristic pathologic cells of atherosclerosis (AS), they are lipid-loaded macrophages present on atherosclerotic lesions. A large number of studies have shown that the pathogenesis of AS is the result of interactions between the lipid metabolism disorders and chronic

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