Results 71 to 80 of about 8,304 (240)

Secondary metabolites of Bagassa guianensis Aubl. wood: A study of the chemotaxonomy of the Moraceae family [PDF]

, 2010
International audienceIn order to explain the durability of the Moraceae plant family, phytochemistry of Bagassa guianensis was performed. Ethyl acetate extract was obtained from the heartwood and 18 secondary metabolites were isolated, including 6 ...
Beauchêne, Jacques, Eparvier, Véronique, Herbette, Gaëtan, Royer, Mariana, Stien, Didier, Thibaut, Bernard   +5 more
core   +2 more sources

Synthesis and photochromic properties of benzofuran–phenanthrene and benzofuran–pyrene hybrids

RSC Adv., 2014
Iron(iii) chloride mediated condensation of phenanthrene-9,10-dione and pyrene-4,5-dione with cyclohexanone and its derivatives furnish benzofuran–phenanthrene and benzofuran–pyrene hybrids.
H. Surya Prakash Rao, Satish Vijjapu
openaire   +1 more source

Sustainable Microwave‐Enhanced Synthesis of 2‐Substituted Benzofurans From o‐Alkynylanisoles in Acidic Deep Eutectic Solvents

European Journal of Organic Chemistry, EarlyView.
A microwave‐enhanced sustainable and versatile approach to substituted benzofurans from 2‐alkynylanisoles enabled by an active Brønsted acidic deep eutectic solvent. The research on alternative media for organic transformations remains a highly demanding topic.
Alessandra Gritti, Angelica Sita, Mehri Goudarzi, Stefano Fedeli, Elison Lepore, Donatella Nava, Matteo Tiecco, Alessandro Caselli, Valentina Pirovano, Giorgio Abbiati   +9 more
wiley   +1 more source

Activation of Hsp90 Enzymatic Activity and Conformational Dynamics through Rationally Designed Allosteric Ligands [PDF]

, 2015
Hsp90 is a molecular chaperone of pivotal importance for multiple cell pathways. ATP-regulated internal dynamics are critical for its function and current pharmacological approaches block the chaperone with ATP-competitive inhibitors.
Agard, David A., Beebe, Kristin, Bernardi, Anna, Bugatti, Antonella, Colombo, Giorgio, Kijima, Toshiki, Lopergolo, Alessia, Morelli, Laura, Moroni, Elisabetta, Moses, Mike, Neckers, Len, Pennati, Marzia, Prince, Thomas, Rusnati, Marco, Sattin, Sara, Tao, Jiahui, Vettoretti, Gerolamo, Zaffaroni, Nadia, Zuehlke, Abbey   +18 more
core   +1 more source

Remarkable Formation of Indene Derivatives Upon Friedel–Crafts Acylation Reactions

European Journal of Organic Chemistry, EarlyView.
This shows indene derivatives. Under the reaction conditions of a Friedel–Crafts acylation, alkyl benzenes underwent an unprecedented cyclopentannulation furnishing indene derivatives. Alkylbenzene derivatives react with two equivalents of pivaloyl chloride (PivCl) in the presence of aluminum trichloride under formation of indene derivatives with up to
Leah Bantel, Neels Kruse, Marc Schmidtmann, Jens Christoffers   +3 more
wiley   +1 more source

Suppression of lipopolysaccharide-induced COX-2 expression via p38MAPK, JNK, and C/EBPβ phosphorylation inhibition by furomagydarin A, a benzofuran glycoside from Magydaris pastinacea

Journal of Enzyme Inhibition and Medicinal Chemistry
The phytochemical investigation of the methanol extract of the seeds of Magydaris pastinacea afforded two undescribed benzofuran glycosides, furomagydarins A-B (1, 2), together with three known coumarins.
Shiu-Wen Huang, Ming Jen Hsu, Hsiu-Chen Chen, Rita Meleddu, Simona Distinto, Elias Maccioni, Filippo Cottiglia   +6 more
doaj   +1 more source

Toxicity of Compounds Isolated from White Snakeroot () to Adult and Larval Yellow Fever Mosquitoes ()

Natural Product Communications, 2016
Botanicals have been the source for several classes of pesticides for mosquitoes. However, increasing resistance to these products and reduced numbers of choices necessitate the search for new active ingredients. Ageratina altissima (L.) King & H.
Alden S. Estep, James J. Becnel, Stephen T. Lee   +2 more
doaj   +1 more source

Facile access to benzofuran derivatives through radical reactions with heteroatom-centered super-electron-donors

Nature Communications, 2023
The development of suitable electron donors is critical to single-electron-transfer (SET) processes. The use of heteroatom-centered anions as super-electron-donors (SEDs) for direct SET reactions has rarely been studied.
Shichun Jiang, Wei Wang, Chengli Mou, Juan Zou, Zhichao Jin, Gefei Hao, Yonggui Robin Chi   +6 more
doaj   +1 more source

Syntheses of Sterically Shielded Stable Carbenes of the 1,2,4-Triazole Series and their Corresponding Palladium Complexes: Efficient Catalysts for Chloroarene Hydrodechlorination [PDF]

, 2014
The new sterically shielded 1,3,4-trisubstituted 1,2,4-triazol-5-ylidenes 8b-d were synthesized by a three step method starting from 2-phenyl-1,3,4-oxadiazole.
Butorac, Rachel R., Cowley, Alan H., Evans, Daniel A., Glinyanay, Nataliya V., Korotkikh, Nikolai I., Pekhtereva, Tatyana M., Popov, Anatolii F., Saberov, Vagiz S., Shvaika, Oles P.   +8 more
core   +1 more source

Fluorene‐based blue emitters: On the path to electrically pumped organic lasers

FlexMat, EarlyView.
Electrically pumped efficient operation remains unrealized, a major challenge in optoelectronics. Fluorene‐based blue‐emitting semiconductors are promising gain media, thanks to their structural tunability and favorable emission properties. This review summarizes recent advances, highlights their reliability and versatility in lasing, and outlines key ...
Yong Yan, Hao Li, Mengna Yu, Huiyin Wang, Jiangqiang He, Menghan Wu, Quanyou Feng, Linghai Xie   +7 more
wiley   +1 more source