styrax tonkinensis/resin

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Two new triterpenoids from the resin of Styrax tonkinensis.

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Two new triterpenoids, 3β,6β-dihydroxy-12-oxo-13Hα-olean-28,19β-olide (1) and 3-oxo-olean-11,13(18)-dien-28,19β-olide (2) were isolated from the resin of Styrax tonkinensis (Pier.) Craib. The structures of both triterpenoids were determined by physicochemical and spectroscopic methods. Compound 1 is

Two new phenylpropanoids from the resin of Styrax tonkinensis (Pierre) Craib ex Hartw

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Two new phenylpropanoids, named stytonkinol A (1) and stytonkinol B (2), have been isolated from the resin of Styrax tonkinensis (Pierre) Craib ex Hartw. Their structures were determined by spectroscopic analysis, including 1D and 2D NMR, and HR-ESI-MS. Two isolated compounds were assayed for

Two new aromatic compounds from the resin of Styrax tonkinensis (Pier.) Craib.

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Two new aromatic compounds, trans-(tetrahydro-2-(4-hydroxy-3-methoxyphenyl)-5-oxofuran-3-yl)methyl benzoate (1), 3-(4-hydroxy-3-methoxyphenyl)-2-oxopropyl benzoate (2) and one new natural product, 4-((E)-3-ethoxyprop-1-enyl)-2-methoxyphenol (3) together with five known aromatic compounds have been

Triterpenoids from the resin of Styrax tonkinensis and their antiproliferative and differentiation effects in human leukemia HL-60 cells.

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Four new triterpenoids, 6beta-hydroxy-3-oxo-11alpha,12alpha-epoxyolean-28,13beta-olide (1), 3beta,6beta-dihydroxy-11alpha,12alpha-epoxyolean-28,13beta-olide (2), 3beta,6beta-dihydroxy-11-oxo-olean-12-en-28-oic acid (3), and 3beta-hydroxy-12-oxo-13Halpha-olean-28,19beta-olide (4), and five known

X-ray diffraction study of some fossil and modern resins.

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Samples of both fossil and modern resins have been investigated by x-ray diffraction techniques. Most fossil resins (ambers) yield only diffuse x-ray diffraction patterns, though some (settlingite, Highgate copalite, and guayaquillite) have relatively sharp patterns. Many modern resins, including

Aromatic resin characterisation by gas chromatography-mass spectrometry. Raw and archaeological materials.

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An analytical procedure based on alkaline hydrolysis, solvent extraction and trimethyl-silylation followed by gas chromatography-mass spectrometry (GC-MS) analysis was used to study the chemical composition of benzoe and storax resins, water-insoluble exudates of trees of the Styrax and Liquidambar

Biological activity of some naturally occurring resins, gums and pigments against in vitro LDL oxidation.

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Naturally occurring gums and resins with beneficial pharmaceutical and nutraceutical properties were tested for their possible protective effect against copper-induced LDL oxidation in vitro. Chiosmastic gum (CMG) (Pistacia lentiscus var. Chia resin) was the most effective in protecting human LDL

Anti-Inflammatory and Anti-Apoptotic Effects of Stybenpropol A on Human Umbilical Vein Endothelial Cells.

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Inflammation is a key mediator in the progression of atherosclerosis (AS). Benzoinum, a resin secreted from the bark of Styrax tonkinensis, has been widely used as a form of traditional Chinese medicine in clinical settings to enhance cardiovascular function, but the active components of the

Ceratocystis larium sp. nov., a new species from Styrax benzoin wounds associated with incense harvesting in Indonesia.

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Styrax benzoin trees, native to the island Sumatra, Indonesia are wounded to produce resin that is collected and burned as incense. These wounds on trees commonly develop into expanding cankers that lead to tree death. The aim of this study was to consider whether Ophiostomatoid fungi, typically

Characterization of the chemical composition of a byproduct from siam benzoin gum.

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The mixture of bark and gum obtained after size-grading of Siam benzoin gum was studied to establish its potential application as a valuable new grade of the balsamic resin. An analysis of its volatile constituents by means of static headspace and SPME led to the identification of 26 and 50

Storax Protected Oxygen-Glucose Deprivation/Reoxygenation Induced Primary Astrocyte Injury by Inhibiting NF-κB Activation in vitro.

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Stroke is the second leading cause of death and the leading cause of long-term disability in the world. There is an urgent unmet need to develop a range of neuroprotective strategies to restrain the damage that occurs in the hours and days following a stroke. Storax, a natural resin extracted from

Sedative and anticonvulsant activities of styrax after oral and intranasal administration in mice.

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BACKGROUND Styrax, resin of Liquidambar orientalis Mill. (N.O. Hamamelaceae), belongs to resuscitation-inducing aromatic herbs in traditional Chinese medicine and functions in inducing resuscitation and restoring conscientiousness. OBJECTIVE The possible sedative and anticonvulsant activities of

Characterization of volatiles and anti-ulcerogenic effect of Turkish sweetgum balsam (Styrax liquidus).

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BACKGROUND Sweetgum, Styrax liquidus (Turkish sweetgum) is a resinous exudate obtained from the wounded barks of Liquidambar orientalis Miller tree which belongs to Altingiaceae (Hamamelidaceae). The plant material has been used for the treatment of peptic ulcer symptoms in Turkish folk medicine

Fast and Green - CO2 Based Extraction, Isolation, and Quantification of Phenolic Styrax Constituents.

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In this study the first supercritical fluid based protocol for the extraction, analysis, and isolation of six polar compounds, i.e., o-vanillin (1), styracin (2), vanillin (3), trans-cinnamic acid (4), vanillic acid (5), and shikimic acid (6), was developed. First, eight styrax resin products

Identification of the earliest collagen- and plant-based coatings from Neolithic artefacts (Nahal Hemar cave, Israel).

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Mortuary practices in human evolution record cognitive, social changes and technological innovations. The Neolithic Revolution in the Levant was a watershed in this domain that has long fascinated the archaeological community. Plaster modelled skulls are well known at Jericho and several other

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