Stilbene


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stilbene

[′stil‚bēn]
(organic chemistry)
C6H5CH:CHC6H5 Colorless crystals soluble in ether and benzene, insoluble in water; melts at 124°C; used to make dyes and bleaches and as phosphors. Also known as diphenylethylene; toluylene.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Stilbene

 

an aliphatic-aromatic hydrocarbon; the trans form of 1,2-diphenylethylene (C6H5—CH═CH—C6H5; the cis form is known as isostilbene). Stilbene is obtained as colorless crystals that are readily soluble in regular organic solvents but insoluble in water. The melting point is 124°C, and the boiling point 306°-307°C. Stilbene crystals are used in scintillation counters, and certain stilbene derivatives are used as pharmaceuticals, for example, diethylstilbesterol, and as optical bleaches and azo dyes.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
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It exists in plants of several families, such as: Cyperaceae, Dipterocarpaceae, Gnetaceae, Fabaceae, Leguminoseae, Pinaceae, Poaceae, and Vitaceae, and is synthesized from the phenylpropanoid substrates that are present in all higher plants and it also involves the activity of stilbene synthase or resveratrol synthase (STS) (Jeandet).
Tempeh & Soybean Seed Coat: The Alternative Sources of Trans-Resveratrol as Neuroprotective Agents/Tempeh y Cubierta de Semillas de Soja: Fuentes Alternativas de Trans-Resveratrol como Agentes Neuroprotectores
Ortega, "Role of natural stilbenes in the prevention of cancer," Oxidative Medicine and Cellular Longevity, vol.
Structure-Based Drug Design for Cytochrome P450 Family 1 Inhibitors
Yoshikawa, "Antioxidant constituents from rhubarb: structural requirements of stilbenes for the activity and structures of two new anthraquinone glucosides," Bioorganic and Medicinal Chemistry, vol.
Lipid Peroxidation and Antioxidant Activities of the Aqueous Rhizome Extract of Rheum officinale Baillon
Baek, "Production of a major stilbene phytoalexin, resveratrol in peanut (Arachis hypogaea) and peanut products: a mini review," Reviews in Environmental Science and Bio/Technology, vol.
Green and Efficient Extraction of Resveratrol from Peanut Roots Using Deep Eutectic Solvents
Bolling, "Characterisation of stilbenes in California almonds (Prunus dulcis) by UHPLC-MS," Food Chemistry, vol.
Optimized Extraction of Resveratrol from Arachis repens Handro by Ultrasound and Microwave: A Correlation Study with the Antioxidant Properties and Phenol Contents
Compounds 5 and 6 had stilbene structures and showed potent inhibitory activity, with [IC.sub.50] values of 6.73 [micro]M and 11.05 [micro]M as compared to the positive control, Trolox, with an [IC.sub.50] value of 16.83 [micro]M.
Rapid Identification and Isolation of Inhibitors of Rat Lens Aldose Reductase and Antioxidant in Maackia amurensis
For example, the 1H-NMR spectrum of 2i exhibits one singlet for the same two olefin protons in 6.5 ppm that is in agreement with (Z)-structure for stilbene. Aromatic protons appeared in the region between 7.3-7.7 ppm with expected pattern for mono substituted benzene.
Partial Hydrogenation of Alkynes on Highly Selective Nano-Structured Mesoporous silica MCM-41 Composite Catalyst
Pterostilbene and resveratrol are both stilbene compounds and are structurally related.
Activate three key longevity pathways
The major peak-to-peak mass increments were 133, 227, 297, 315 to 319, 429, and 445 Da, which corresponded to structures (I) resorcinol, (II) stilbene type, (III) fisetinidin, (IV) catechin, (V) fisetinidin-resorcinol, and (VI) catechin-resorcinol repeating units, respectively (Table 1).
Characterization of merbau wood extract used as an adhesive in glued laminated lumber
Application of high-speed counter-current chromatography combined with macroporous resin for rapid enrichment and separation of three anthraquinone glycosides and one stilbene glycoside from Rheum tanguticum.
Isolation of Herbicidal Substance, a-terthienyl, from the Root of Flaveria bidentis using HSCCC and HPLC

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