Results 21 to 30 of about 6,035 (254)

Application of the Meerwein reaction of 1,4-benzoquinone to a metal-free synthesis of benzofuropyridine analogues

Beilstein Journal of Organic Chemistry, 2021
Several new heterocyclic systems based on a hydroxybenzofuro[2,3-b]pyridine building block were prepared. This benzofuropyridine is easily available from the Meerwein reaction of benzoquinone and a heterocyclic diazonium salt, followed by reduction and ...
Rashmi Singh, Tomas Horsten, Rashmi Prakash, Swapan Dey, Wim Dehaen   +4 more
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Redox Activity as a Powerful Strategy to Tune Magnetic and/or Conducting Properties in Benzoquinone-Based Metal-Organic Frameworks

Magnetochemistry, 2021
Multifunctional molecular materials have attracted material scientists for several years as they are promising materials for the future generation of electronic devices.
Noemi Monni, Mariangela Oggianu, Suchithra Ashoka Sahadevan, Maria Laura Mercuri   +3 more
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Anticancer activity and toxicity of new quaternary ammonium geldanamycin derivative salts and their mixtures with potentiators

Journal of Enzyme Inhibition and Medicinal Chemistry, 2021
Geldanamycin (GDM) has been modified by different type neutral/acidic/basic substituents (1–7) and by quinuclidine motif (8), transformed into ammonium salts (9–13) at C(17).
Natalia Skrzypczak, Krystian Pyta, Piotr Ruszkowski, Przemysław Mikołajczak, Małgorzata Kucińska, Marek Murias, Maria Gdaniec, Franz Bartl, Piotr Przybylski   +8 more
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Neuroprotective effect and mechanism of idebenone on hippocampal damage induced by epileptic seizure

Chinese Journal of Contemporary Neurology and Neurosurgery, 2022
Objective To investigate the protective effect of idebenone (IDBN) on hippocampal neuron injury in epileptic rats and its mechanism. Methods Forty-eight Wistar rats were randomly divided into normal control group, IDBN prevention group (prevention group),
QIAO Shan, SU Yong-xin, ZHANG Ran-ran, WU Yu-jiao, WANG Ke-mo, LIU Xue-wu   +5 more
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Harvestman Phenols and Benzoquinones: Characterisation and Biosynthetic Pathway

Molecules, 2013
Benzoquinones are usually present in arthropod defence exudates. Here, we describe the chemical profiles of 12 harvestman species belonging to the neotropical family Gonyleptidae.
Glauco Machado, Anita J. Marsaioli, Dávila S. Zampieri, Timothy J. Brocksom, Felipe C. Wouters, Daniele F. O. Rocha   +5 more
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Novel Anti-Aging Benzoquinone Derivatives from Onosma bracteatum Wall

Molecules, 2019
The aim of this study was to investigate anti-aging molecules from Onosma bracteatum Wall, a traditional medicinal plant used in the Unani and Ayurvedic systems of medicine. During bioassay-guided isolation, two known benzoquinones, allomicrophyllone (1)
Umer Farooq, Yanjun Pan, Dejene Disasa, Jianhua Qi   +3 more
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Effects of Benzoquinones on Radicles of Orobanche and Phelipanche Species

Plants, 2021
The holoparasitic broomrape weeds (Orobanche and Phelipanche species) cause severe yield losses throughout North Africa, the Middle East, and Southern and Eastern Europe. These parasitic weeds form an haustorium at the tip of their radicles to infect the
Mónica Fernández-Aparicio, Marco Masi, Alessio Cimmino, Antonio Evidente   +3 more
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A Model for Phylogenetic Chemosystematics: Evolutionary History of Quinones in the Scent Gland Secretions of Harvestmen

Frontiers in Ecology and Evolution, 2017
By the possession of unique exocrine scent glands, Opiliones (harvestmen) arise as a perfect model for studies on the evolutionary history of secretion chemistry.
Günther Raspotnig, Günther Raspotnig, Miriam Schaider, Petra Föttinger, Petra Föttinger, Axel Schönhofer   +5 more
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Regioselectivity of conjugate additions to monoalkyl-1,4-benzoquinones [PDF]

Journal of the Serbian Chemical Society, 2002
The regioselectivity of the reaction of conjugate addition of thiols, amines, methanol and hydrogen chloride with the monoalkyl-1,4-benzoquinones avarone and 2-tert-butyl-1,4-benzoquinone was investigated.
SNEZANA TRIFUNOVIC, MIROSLAV J. GASIC, MARIO ZLATOVIC, IRENA NOVAKOVIC, DUSAN SLADIC, TATJANA BOZIC   +5 more
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Metal-Free Aminohalogenation of Quinones With Alkylamines and NXS at Room Temperature

Frontiers in Chemistry, 2022
A simple and practical strategy for intermolecular aminohalogenation of quinone with alkyl amines and NXS was developed, in which haloamines generated in situ were employed as bifunctional reagents.
Jia Li, Yu-An Li, Ge Wu, Xu Zhang
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