Results 171 to 180 of about 3,431 (206)

Induced Juglone Toxicosis in Ponies and Horses

American Journal of Veterinary Research, 1980
SUMMARY Juglone, a toxic compound found in all parts of plants of the walnut tree family Juglans, was evaluated as the possible toxin involved in black walnut shaving-associated laminitis in the horse. Large amounts (up to 1 g) of this chemical administered per os inconsistently caused mild signs of laminitis in ponies.
R G, True, J E, Lowe
openaire   +2 more sources

Effect of juglone on freshwater algal growth

Journal of Chemical Ecology, 1989
Allelopathic growth inhibition of various freshwater algal species was observed upon the addition of juglone to culture medium under laboratory conditions. Juglone is a phenolic chemical compound common to most parts of the black walnut (Juglans nigra L.). Growth inhibition of all species occurred at a juglone concentration of 10(-3) M.
exaly   +3 more sources

ChemInform Abstract: Regiochemical Control in the Addition of Aryl N‐Sulfinylamines to Juglone and Juglone Derivatives.

ChemInform, 1999
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Ananda S. Amarasekara, W. Wimal Pathmasiri   +1 more
openaire   +1 more source

A Novel Synthesis of Naphthazarin and Juglone Derivatives by Reaction of Naphthazarin and Juglone with Cyclic Enol Ethers

Bulletin of the Chemical Society of Japan, 1993
Abstract The reaction of naphthazarin with cyclic enol ethers in acetic acid in the presence of BF3·OEt2 gave naphthazarin derivatives such as cycloshikonin, having a cyclic ether substituent, in one step. Cyclic enol ethers did not attack the quinone ring of naphthazarin but the benzene ring, and the corresponding naphthazarin ...
Yasuhiro Tanoue, Akira Terada, Hiroshige Taniguchi, Tadashi Okuma, Hiroshi Kaai, Mihoko Anan, Yasuyuki Kakara, Mika Doi, Shin-ichi Morishita   +8 more
openaire   +1 more source

Plumbagin, Juglone, and Boropinal as Novel TRPA1 Agonists

Journal of Natural Products, 2016
A series of seven oxyprenylated phenylpropanoids and naphthoquinones were tested regarding their ability to activate transient receptor potential ankyrin subtype 1 channel (TRPA1). Three of the assayed compounds, namely, boropinal (3), juglone (5), and plumbagin (7), acted as strong modulators of TRPA1 channels with EC50 values of 9.8, 1.7, and 0.5 μM,
Hill, K, FIORITO, SERENA, TADDEO, VITO ALESSANDRO, Schulze, A, Leonhardt, M, EPIFANO, Francesco, GENOVESE, Salvatore   +6 more
openaire   +3 more sources

Metabolism and disposition of juglone in male F344 rats

Xenobiotica, 2005
The metabolism and disposition of 14C-labelled juglone in male F344 rats following oral, intravenous and dermal administration were studied. Approximately 40-50% of an oral dose (0.1 to 10 mg kg-1) and less than 20% of the dermal dose (4 mg kg-1) were absorbed within 24 h. Most of the oral dose was excreted in faeces and urine within 24 h and only 1-3%
L-J, Chen, E H, Lebetkin, L T, Burka
openaire   +2 more sources

Characterization of ζ-Crystallin Inhibition by Juglone

Biochemical and Biophysical Research Communications, 1996
Guinea pig lens zeta-crystallin showed hyperbolic saturation curves with 9,10-phenanthrenequinone (PAQ). 5-hydroxy-1,4-naphthoquinone (juglone) and NADPH. Whereas camel lens zeta-crystallin showed hyperbolic saturation curves only with PAQ and NADPH, but slightly segmoidal with juglone. For both enzymes PAQ was the preferred substrate.
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Direct Amination of Naphthazarin, Juglone, and Some Derivatives

Synthetic Communications, 2007
Abstract Mono‐ and diamino‐derivatives of naphthazarin, 2‐methoxynaphthazarin, juglone and their methylethers were prepared by reaction with ammonia. The structure of the products was established by NMR studies. Some compounds were tested for cytotoxic activity.
Arnone A., Merlini L., Nasini G., De Pava O.V.   +3 more
openaire   +2 more sources

Effects of Nitroxide Stable Radicals on Juglone Cytotoxicity

Archives of Biochemistry and Biophysics, 1994
Nitroxides stable radicals are unreactive toward most diamagnetic molecules, but readily undergo one-electron redox reactions with paramagnetic species such as free radicals and transition metals, thus serving as cell-permeable antioxidants. The cytotoxicity of juglone (5-hydroxy-1,4-naphthoquinone), like that of other naphthoquinones, requires ...
R, Zhang, O, Hirsch, M, Mohsen, A, Samuni   +3 more
openaire   +2 more sources

ChemInform Abstract: An Efficient Synthesis of Juglone.

ChemInform, 1991
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
R. BARRET, M. DAUDON
openaire   +1 more source