7 methoxycoumarin/krabbamein

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Anti-tumor-promoting effects of 8-substituted 7-methoxycoumarins on Epstein-Barr virus activation assay.

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In a search for anti-tumor-promoting agents, we carried out a primary screening of twenty-nine 8-substituted and four 6-substituted derivatives of 7-methoxycoumarins isolated from plants of the Murraya and/or Citrus species (Rutaceae), examining their possible inhibitory effects on Epstein-Barr

5-Geranyloxy-7-methoxycoumarin inhibits colon cancer (SW480) cells growth by inducing apoptosis.

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For the first time, three coumarins were isolated from the hexane extract of limes (Citrus aurantifolia) and purified by flash chromatography. The structures were identified by NMR (1D, 2D) and mass spectral analyses as 5-geranyloxy-7-methoxycoumarin, limettin, and isopimpinellin. These compounds

Coumarin derivatives with tumor-specific cytotoxicity and multidrug resistance reversal activity.

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A preliminary exploration of coumarin derivatives as novel multidrug resistance (MDR) modulators was carried out to determine the basic features of the structure responsible for the MDR reversal activity. Among 44 coumarins, 14 compounds moderately induced the reversal of MDR (fluorescence activity

Estrogen-like and tissue-selective effects of 7-methoxycoumarin from Ficus umbellata (Moraceae): an in vitro and in vivo study.

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BACKGROUND Ficus umbellata is a medicinal plant previously shown to endow estrogenic properties. Its major component was isolated and characterized as 7-methoxycoumarin (MC). Noteworthy, coumarins and the respective active metabolite 7-hydroxycoumarin analogs have shown aromatase inhibitory

Identification of coumarins from lemon fruit (Citrus limon) as inhibitors of in vitro tumor promotion and superoxide and nitric oxide generation.

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Three coumarins were isolated as siginificant inhibitors of tumor promoter 12-O-tetradecanoylphorbol-13-acetate (TPA)-induced Epstein-Barr virus (EBV) activation in Raji cells from the peel of lemon fruit. They were identified as 8-geranyloxypsolaren (LE-1), 5-geranyloxypsolaren (bergamottin, LE-2),

4-Hydroxy-7-Methoxycoumarin Inhibits Inflammation in LPS-activated RAW264.7 Macrophages by Suppressing NF-κB and MAPK Activation

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Coumarins are natural products with promising pharmacological activities owing to their anti-inflammatory, antioxidant, antiviral, anti-diabetic, and antimicrobial effects. Coumarins are present in many plants and microorganisms and have been widely used as complementary and alternative medicines.

Synthesis and antitumor mechanisms of two novel platinum(ii) complexes with 3-(2'-benzimidazolyl)-7-methoxycoumarin.

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Two novel platinum(ii) complexes, [PtCl2(H-MeOBC)(DMSO)] (Pt1) and [Pt2Cl3(MeOBC)(DMSO)2] (Pt2), with 3-(2'-benzimidazolyl)-8-methoxycoumarin (H-MeOBC) as the ligand were synthesized and evaluated for their antiproliferative activity. Among all the tumor cells, dual-Pt(ii) complex Pt2 exhibited the

Prenylated Coumarins from Heracleum stenopterum, Peucedanum praeruptorum, Clausena lansium, and Murraya paniculata.

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Four hitherto unknown prenylated coumarins, namely 6″-O-β-D-apiofuranosylapterin (1), 4'-O-isobutyroylpeguangxienin (2), 6-(3-methyl-2-oxobutyroyl)-7-methoxycoumarin (3), and 6-hydroxycoumurrayin (4), were isolated from the ethanol extract of Heracleum stenopterum, Peucedanum praeruptorum, Clausena

Coumarins from campylotropis hirtella (FRANCH.) SCHINDL. and their inhibitory activity on prostate specific antigen secreted from LNCaP cells.

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Campylotropis hirtella (FRANCH.) SCHINDL. was used as a folk medicine for the treatment of benign prostate hyperplasia (BPH) in China. In this study, two new coumarins, 7,2',4'-trihydroxy-5-methoxy-3-arylcoumarin (1), 6-[(1S,2S)-2-angeloyloxy-1,3-dihydroxy-3-methylbutyl]-7-methoxycoumarin, named

Main constituents from the seeds of Vietnamese Cnidium monnieri and cytotoxic activity.

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From the ethyl acetate extract of the seeds of Vietnamese Cnidium monnieri L., three coumarins, osthole (1), xanthotoxin (2), imperatorin (3) and a sterol, daucosterol (4) have been purified. Their structures were elucidated by spectroscopic analysis. Furthermore,

Cytotoxic activity and chemical constituents of Anthemis mirheydari.

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Context The genus Anthemis L. (Asteraceae) comprises about 195 species which are widely used in the pharmaceutical, cosmetic and food industries. Objective Anthemis mirheydari Iranshar, an endemic plant from Iran, was investigated for its cytotoxic properties and chemical constituents. Materials and

A 7-methoxybicoumarin derivative selectively inhibits BRD4 BD2 for anti-melanoma therapy

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Melanoma is the most dangerous type of skin cancer because of its high invasion and metastasis ability. Bromodomain-containing protein 4 (BRD4), an acetylation-recognizing reader, mediates the proliferation, metastasis, and invasion of melanoma, and is thus a potential therapeutic target. Mounting

Fluorescence determination of 5-fluorouracil and 1-(tetrahydro-2-furanyl)-5-fluorouracil in blood serum by high-performance liquid chromatography.

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Fluorescence derivatization of 5-fluorouracil (5-FU) and 1-(tetrahydro-2-furanyl)-5-fluorouracil (ftorafur, FT) with 4-bromomethyl-7-methoxycoumarin using 18-crown-6 as a catalyst is studied with aim of developing a sensitive and selective liquid chromatographic method. 5-FU and FT form virtually

Determination of tegafur, 5-fluorouracil, gimeracil and oxonic acid in human plasma using liquid chromatography-tandem mass spectrometry.

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S-1 is an oral anticancer drug, which consists of tegafur (FT), gimeracil (CDHP) and potassium oxonate (Oxo) at a molar ratio of 1:0.4:1. Among these, tegafur is a prodrug, and is rapidly metabolized to the active drug, 5-fluorouracil (5-FU), in vivo. To evaluate the pharmacokinetics of S-1 in

Inhibitory effects of green tea catechins on the activity of human matrix metalloproteinase 7 (matrilysin).

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Inhibitory effects of green tea catechins and their derivatives on the matrilysin-catalyzed hydrolysis of a synthetic substrate, (7-methoxycoumarin-4-yl)acetyl-L-Pro-L-Leu-Gly-L-Leu-[N(3)-(2,4-dinitrophenyl)-L-2,3-diamino-propionyl]-L-Ala-L-Arg-NH(2) [MOCAc-PLGL(Dpa)AR], were examined. The 10

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