syringaresinol/kanser

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Cytotoxicity of seven naturally occurring phenolic compounds towards multi-factorial drug-resistant cancer cells.

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BACKGROUND In medical oncology, multi-drug resistance (MDR) of cancer cells continues to be a major impediment. We are in quest of novel anti-proliferative agents to overcome drug-resistant tumor cells. METHODS In the present study, we investigated the cytotoxicity of 7 naturally occurring phenolic

Induction of apoptosis by Acanthopanax senticosus HARMS and its component, sesamin in human stomach cancer KATO III cells.

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Antitumor effect of the stem bark of Acanthopanax senticosus HARMS (ASH) from Hokkaido (Japanese name: Ezoukogi) on human stomach cancer KATO III cells was investigated. The extract of the stem bark of ASH prepared with hot water was dissolved in distilled water and used for the assay of antitumor

(-)-Syringaresinol inhibits proliferation of human promyelocytic HL-60 leukemia cells via G1 arrest and apoptosis.

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We examined the effect of (-)-syringaresinol, a furofuran-type lignan isolated from Daphne genkwa, on cell cycle regulation in HL-60 human promyelocytic leukemia cells in vitro. (-)-Syringaresinol decreased the viability of HL-60 cells by inducing G(1) arrest followed by apoptosis in a dose- and

P-glycoprotein inhibitory activity of two phenolic compounds, (-)-syringaresinol and tricin from Sasa borealis.

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(-)-Syringaresinol and tricin, isolated from the AcOEt-soluble extract of the whole plants of Sasa borealis (Gramineae), showed inhibitory effects on the P-glycoprotein in adriamycin-resistant human breast cancer cells, MCF-7/ADR.

Attenuation of inflammatory responses by (+)-syringaresinol via MAP-Kinase-mediated suppression of NF-κB signaling in vitro and in vivo.

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We examined the anti-inflammatory effects of (+)-syringaresinol (SGRS), a lignan isolated from Rubia philippinensis, in lipopolysaccharide (LPS)-stimulated RAW 264.7 cells using enzyme-based immuno assay, Western blotting, and RT-PCR analyses. Additionally, in vivo effects of SGRS in the acute

Inhibitory Effects of Chemical Compounds Isolated from the Rhizome of Smilax glabra on Nitric Oxide and Tumor Necrosis Factor- α Production in Lipopolysaccharide-Induced RAW264.7 Cell.

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The rhizome of Smilax glabra has been used for a long time as both food and folk medicine in many countries. The present study focused on the active constituents from the rhizome of S. glabra, which possess potential anti-inflammatory activities. As a result, nine known compounds were isolated from

Lignan and terpene constituents from the aerial parts of Saussurea pulchella.

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Chromatographic separation of the MeOH extract from the aerial parts of Saussurea pulchella led to the isolation of seven terpenes (1-4, 11-13), and eight phenolics (5-10, 14-15). Their structures were determined by spectroscopic means to be

Phenolic glucosides from Dendrobium aurantiacum var. denneanum and their bioactivities.

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A new 8,4'-oxyneolignane glucoside 1 has been isolated from the stems of Dendrobium aurantiacum var. denneanum together with six known phenolic glucosides 2−7. The structure of the new compound, including its absolute configuration, was determined by spectroscopic and chemical methods as

[Studies on chemical constituents of rhizomes of Sophora tonkinensis].

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Thirteen compounds were isolated from the 95% aqueous EtOH extract of the rhizomes of Sophora tonkinensis by a combination of various chromatographic techniques including column chromatography over silica gel, Sphadex LH-20, MCI, ODS, and semi-preparative HPLC.Their structures were elucidated as

DNA Topoisomerase Inhibitory Activity of Constituents from the Flowers of Inula japonica.

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Fourteen compounds were isolated from the flowers of Inula japonica THUNB. (Asteraceae), including two new compounds, (1S,2S,4S,5S,8S,10R)-2-acetoxy-4,3-dihydroxy-pseudoguai-7(11)-en-12,8-olide (1) and (1S,2S,4S,5S,8S,10R)-2,4,13-trihydroxy-pseudoguai-7(11)-en-12,8-olide (2), and twelve known

[Chemical Constituents from A Taditional Mongolian Medicine Clematis aethusifolia].

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To investigate the chemical constituents of Clematis aethusifolia,a traditional Mongolian medicine for resolving hard lump. Bioactive guided isolation and purification of Clematis aethusifolia was performed by normal and reverse phase column chromatography, Sephadex LH-20 and preparation HPLC. The

Cytotoxic lignans from the stems of Helicteres hirsuta collected in Indonesia.

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Cytotoxicity-guided fractionation of the stems of Helicteres hirsuta, of Indonesian origin, led to the isolation and identification of six lignans, namely, (+/-)-pinoresinol, (+/-)-medioresinol, (+/-)-syringaresinol, (-)-boehmenan, (-)-boehmenan H and (+/-)-trans-dihydrodiconiferyl alcohol. Of these

Cytotoxic terpenes and lignans from the roots of Ainsliaea acerifolia.

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The chromatographic separation of the MeOH extract of the roots of Ainsliaea acerifolia (Compositae) led to the isolation of six known terpenes and two known lignans. Their structures were identified by spectroscopic methods as mokko lactone (1), betulonic acid (2), betulinic acid (3), zaluzanin C

[Chemical constituents of stems and branches of Adina polycephala].

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OBJECTIVE To investigate chemical constituents of the stems and branches of Adina polycephala and their pharmacological activities. METHODS The constituents were isolated by a combination of various chromatographic techniques including column chromatography on silica gel, Sephadex LH-20, and C-18,

Stemofurans X-Y from the roots of Stemona species from Laos.

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Two new phenylbenzofuran-type stilbenoids named stemofurans X and Y (1, 2) were isolated from the roots of Stemona pierrei and S. tuberosa, respectively, together with ten known compounds. These compounds were stemanthrenes B-C (3, 4), (+)-syringaresinol (5), maistemonine (6), isomaistemonine (7)

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