N-alkyl 2-[(2-oxo-2-aryl ethyl)amino] benzamide derivatives have been synthesized in high yields. This involves three-component reaction of isatoic anhydride, primary amines in the presence of 2-bromoacethophenone derivatives. The reaction workup is simple and the products can be easily separated from the reaction mixture.
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http://dx.doi.org/10.2174/138620712803519716 | DOI Listing |
Org Biomol Chem
January 2025
Institute of Natural Sciences and Mathematics, Ural Federal University, 51 Lenina Ave., 620000 Ekaterinburg, Russian Federation.
The labile tautomerism of -unsubstituted 5-acyl-4-pyridones, which exist in the form of 4-pyridone or 4-hydroxypyridine depending on the solvent, has been demonstrated. This equilibrium determines the reactivity of pyridones and their ability to undergo substitution reactions of the OH group. A regioselective and convenient method for the construction of functionalized pyrazolo[4,3-]pyridines (30-93%) based on the intramolecular amination reaction of 4-pyridones with hydrazines has been developed.
View Article and Find Full Text PDFInt J Biol Macromol
January 2025
Istanbul Technical University, Faculty of Science and Letters, Department of Chemistry, Soft Materials Research Laboratory, 34469, Maslak, Istanbul, Turkey. Electronic address:
Controllable macromolecular architecture formation via polysaccharide integrated ternary copolymerization was explored in the design of amino-functionalized n-alkyl methacrylate ester-based biohybrids. Ternary poly(dimethylaminoethyl methacrylate-co-glycidyl methacrylate-co-hydroxypropyl methacrylate)/sodium-alginate, PDGH/ALG, hybrids were designed using anionic polysaccharide through in-situ radical polymerization. An insight into the effect of ALG on physicochemical structure of ternary hybrids, particularly the interactions between polymeric chains, was created.
View Article and Find Full Text PDFMaterials (Basel)
December 2024
Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 34 M. Curie-Skłodowska Str., 41-819 Zabrze, Poland.
Phenothiazine-based photosensitizers bear the intrinsic potential to substitute various expensive organometallic dyes owing to the strong electron-donating nature of the former. If coupled with a strong acceptor unit and the length of N-alkyl chain is appropriately chosen, they can easily produce high efficiency levels in dye-sensitized solar cells. Here, three novel D-A dyes containing 1H-tetrazole-5-acrylic acid as an acceptor were synthesized by varying the N-alkyl chain length at its phenothiazine core and were exploited in dye-sensitized solar cells.
View Article and Find Full Text PDFBiomater Adv
December 2024
Department of Biomedical Engineering, Whiting School of Engineering, The Johns Hopkins University, Baltimore, MD, USA; Translational Tissue Engineering Center, Whiting School of Engineering, Johns Hopkins School of Medicine, Baltimore, MD, USA. Electronic address:
This study defines biochemical mechanisms that contribute to novel neural-regenerative activities we recently demonstrated for thiol-modified ManNAc analogs in human neural stem cells (hNSCs) by comparing our lead drug candidate for brain repair, "TProp," to a "size-matched" N-alkyl control analog, "But." These analogs biosynthetically install non-natural sialic acids into cell surface glycans, altering cell surface receptor activity and adhesive properties of cells. In this study, TProp modulated sialic acid-related biology in hNSCs to promote neuronal differentiation through modulation of cell adhesion molecules (integrins α6, β1, E-cadherin, and PSGL-1) and stem cell markers.
View Article and Find Full Text PDFChem Asian J
January 2025
Organometallics and Materials Chemistry Lab, Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi, Sangareddy, 502285, Telangana, India.
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