Journal ArticleDOI
Eight 1,4-naphthoquinones from Juglans
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TLDR
In this article, eight volatile 1,4-naphthoquinones from acetone extracts of unripe black walnut and English walnut (Juglans regia) fruit were identified by gas chromatography-mass spectrometry assisted by 1H NMR.About:
This article is published in Phytochemistry.The article was published on 1989-01-01. It has received 89 citations till now. The article focuses on the topics: Juglans & Juglandaceae.read more
Citations
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Journal ArticleDOI
Plumbagin (5-Hydroxy-2-methyl-1,4-naphthoquinone) Suppresses NF-κB Activation and NF-κB-regulated Gene Products Through Modulation of p65 and IκBα Kinase Activation, Leading to Potentiation of Apoptosis Induced by Cytokine and Chemotherapeutic Agents
TL;DR: It is found that plumbagin inhibited NF-κB activation induced by TNF, and other carcinogens and inflammatory stimuli (e.g. phorbol 12-myristate 13-acetate, H2O2, cigarette smoke condensate, interleukin-1β, lipopolysaccharide, and okadaic acid).
Journal ArticleDOI
Antifungal activity of plant extracts against dermatophytes.
TL;DR: The aqueous extracts of 22 plants used in folkloric medicine in Palestine were investigated for their antifungal activity and minimum inhibitory concentrations (MICs) against nine isolates of Microsporum canis, Trichophyton mentagrophytes and Trichopterton violaceum.
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Noteworthy Secondary Metabolites Naphthoquinones – their Occurrence, Pharmacological Properties and Analysis
TL;DR: The utilizing of naphthoquinones for medicinal purposes and their occurrence in nature is reviewed and discussed and analytical techniques using for their analysis are reviewed.
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Seasonal variations of selected flavonoids, phenolic acids and quinones in annual shoots of common walnut (Juglans regia L.)
TL;DR: 1,4-naphthoquinone could be involved in the defence mechanism of the shoots against bacterial blight, based on the seasonal decrease determined in the very susceptible cultivar Sampion, it is concluded.
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Cell-specific production and antimicrobial activity of naphthoquinones in roots of Lithospermum erythrorhizon
TL;DR: The regulation of this suite of related, differentially produced,Differentially active compounds is studied to understand their role(s) in plant defense at the cellular level in the rhizosphere.
References
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(−)-Regiolone, an α-tetralone from Juglans regia: structure, stereochemistry and conformation
TL;DR: In this paper, a new α-tetralone derivative named (−)-regiolone has been isolated with juglone, betulinic acid and sitosterol from the stem-bark of Juglans regia.
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Aglycones and glycosides of oxygenated naphthalenes and a glycosyltransferase from Juglans
TL;DR: 4-Hydroxy-1-naphthalenyl-β- β- D -glucopyranoside, a new natural product, as well as 1,4- naphthoquinone, juglone, and 4,8-dihydroxy- 1-Naphthalene-β are presented.
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Distribution of juglone and related compounds in pecan and their effect on Fusicladium effusum
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The isolation and identification of a hydrojuglone glycoside occurring in the walnut.
TL;DR: It appears that this substance is glycosidal in nature with the sugar moiety attached to the 5-hydroxyl of 1:4:5-trihydroxynaphthalene, and the work leading to its isolation and identification is described.
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The determination and occurrence of a hydrojuglone glucoside in the walnut.
TL;DR: In order to determine juglone's role in the economy of the plant, the occurrence of the glucoside was determined during the 1948 and 1949 growing periods.