New functionalized terphenyl derivatives incorporating various heterocyclic rings are prepared by using 4,4''-difluoro-5'-hydroxy-1,1':3',1''-terphenyl-4'-carbohydrazide as a key intermediate derived from 4,4'-difluoro chalcone, a versatile synthone. All the derivatives are characterized by (1)H NMR, IR, and mass spectral data. All the synthesized products are screened for their in vitro antimicrobial and antioxidant properties. The majority of the tested compounds exhibited significant antioxidant activity and some of them showed good antimicrobial activity.
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http://dx.doi.org/10.1155/2012/530392 | DOI Listing |
J Nat Prod
December 2024
State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang 550014, China.
-Terphenyl compounds are known to possess a diverse range of biological activities, making the synthesis of novel -terphenyl derivatives a significant research objective. In this study, we report the first synthesis of nocarterphenyl A (), characterized by a thiazole-fused -terphenyl framework. Furthermore, we synthesized 18 additional analogs, including the naturally occurring compound 5-methoxy-4,7-bis(4-methoxyphenyl)benzo[]thiazol-6-ol (), employing a similar synthetic approach.
View Article and Find Full Text PDFJ Am Chem Soc
December 2024
State Key Laboratory and Institute of Elemento-Organic Chemistry, Frontiers Science Center for New Organic Matter, College of Chemistry, Nankai University, Tianjin 300071, China.
The exploration of main group compounds with multiple bonds has significantly enhanced our understanding of chemical bonding and expanded transition-metal-free bond activation and catalysis. Diborynes, characterized by a boron-boron triple bond (B≡B), represent a particularly challenging area due to boron's limited valence electrons. Here, we report the synthesis and characterization of a silylene-stabilized diboryne (), expanding the frontier of diboryne stabilization.
View Article and Find Full Text PDFChemistry
December 2024
Department of Chemistry, University of Bath, Claverton Down, Bath, BA2 7AY, UK.
Reactions of a m-terphenylhydridostannylene with β-diketiminato magnesium and calcium hydrides provide bis-μ-hydrido species, the heterobimetallic constitutions of which are maintained after the addition of THF donor solvent. In both cases, reactions with hex-1-ene result in the formation of tetravalent organostannyl alkaline earth derivatives. Whereas the magnesium reagent undergoes facile twofold addition, the calcium-centered process is arrested after a single alkene reduction event.
View Article and Find Full Text PDFSpectrochim Acta A Mol Biomol Spectrosc
February 2025
Key Laboratory of New Energy & New Functional Materials, Shaanxi Key Laboratory of Chemical Reaction Engineering, College of Chemistry and Chemical Engineering, Yan'an University, Yan'an, Shaanxi 716000, PR China.
J Am Chem Soc
October 2024
Department of Chemistry, University of Victoria, 3800 Finnerty Rd., Victoria, British Columbia V8P 5C2, Canada.
Herein, we report the synthesis of extended sulfo-pillar[6]arenes (), a new host class with a pedigree in salt tolerance and ultrahigh binding affinity toward multiple drug classes. The parent sulfo-pillar[6]arene is a high-affinity host with the potential to act as a supramolecular reversal agent. However, it lacks synthetic diversification of the core scaffold.
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