4 hydroxybenzaldehyde/kansè

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Synthesis and anti-cancer activity evaluation of new aurone derivatives.

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In this study, we have synthesized 2-[3- or 4-(2-aryl-2-oxoethoxy)arylidene]benzofuran-3-one derivatives (D1-D38) and evaluated their anti-cancer activities. The final compounds were obtained in multistep synthesis reactions using benzofuranon-3-one derivatives (A1-A4, B) as starting materials which

Divergent immunomodulatory effects of extracts and phenolic compounds from the fern Osmunda japonica Thunb.

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OBJECTIVE To study possible immunobiological potential of Osmunda japonica Thunb. METHODS Immunomodulatory effects of ethanol extracts prepared from rhizomes of O. japonica and phenolic compounds isolated from the extracts were investigated under the in vitro conditions using the rat peritoneal

Effects of Chamaecyparis formosensis Matasumura extractives on lipopolysaccharide-induced release of nitric oxide.

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Chamaecyparis formaosensis, commonly known as Taiwan red cypress, is native to Taiwan and grows at elevations of 1500-2150 m in Taiwan's central mountains. Many compounds have been identified from different pasts of C. formosensis, but up until now, little research has been done on the link between

Synthesis and characterization of a novel functionalized azanonaborane cluster for boron neutron capture therapy.

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The reactivity of an azanonaborane cluster containing free amino groups {H2N(CH2)4H2NB8H11NH(CH2)4NH2} towards ketones and aldehydes is investigated. In a one step reaction, the reductive amination of some ketones and aldehydes (namely acetone, benzaldehyde, 3-hydroxybenzaldehyde,

Synthesis and anticancer activity of some novel tetralin-6-yl-pyrazoline, 2-thioxopyrimidine, 2-oxopyridine, 2-thioxo-pyridine and 2-iminopyridine derivatives.

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The title compounds were prepared by reaction of 6-acetyltetralin (1) with different aromatic aldehydes 2a-c, namely 2,6-dichlorobenzaldehyde, 2,6-diflouro-benzaldehyde, and 3-ethoxy-4-hydroxybenzaldehyde, to yield the corresponding a,b-unsaturated ketones 3a-c. Compound 3b was reacted with

Constituents of the stems of Macrococculus pomiferus and their inhibitory activities against cyclooxygenases-1 and -2.

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As part of our program directed towards the discovery of new cancer chemopreventive agents from plants, the EtOAc-soluble extract of the stems of M. pomiferus was found to inhibit the enzyme cyclooxygenase-2 (COX-2). Bioassay-directed fractionation of this extract led to the isolation of two

[Studies on chemical constituents of Laurencia tristicha ( II )].

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OBJECTIVE To search for chemical constituents with structural diversity from Laurencia tristicha to supply for biological assay. METHODS Compounds were isolated by means of column chromatography over normal phase silica gel and Sephadex LH-20, recrystallization and HPLC. Structures were identified

Soluble tetraarylporphyrin-platinum conjugates as cytotoxic and phototoxic antitumor agents.

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A series of asymmetric tetraarylporphyrins was synthesized from pyrrole, para-substituted oligo- or poly(ethylene glycol) monomethyl ether benzaldehyde and from 4-hydroxybenzaldehyde etherified with diethyl bromomalonate according to the Lindsey method. After hydrolysis of the tetraarylporphyrin

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