Modular Synthesis of Di- and Trisubstituted Imidazoles from Ketones and Aldehydes: A Route to Kinase Inhibitors
作者:Ian de Toledo、Thiago A. Grigolo、James M. Bennett、Jonathan M. Elkins、Ronaldo A. Pilli
DOI:10.1021/acs.joc.9b01844
日期:2019.11.1
A one-pot and modular approach to the synthesis of 2,4(5)-disubstituted imidazoles was developed based on ketone oxidation, employing catalytic HBr and DMSO, followed by imidazole condensation with aldehydes. This methodology afforded twenty-nine disubstituted NH-imidazoles (23%-85% yield). A three-step synthesis of 20 kinase inhibitors was achieved by employing this oxidation-condensation protocol
2,4(5)-Diarylimidazoles: Synthesis and biological evaluation of a new class of sodium channel blockers against hNav1.2
作者:Mirko Rivara、Aparna R. Baheti、Marco Fantini、Giuseppe Cocconcelli、Chiara Ghiron、Christopher L. Kalmar、Natasha Singh、Ellen C. Merrick、Manoj K. Patel、Valentina Zuliani
DOI:10.1016/j.bmcl.2008.09.036
日期:2008.10
4(5)-diarylimidazoles were prepared through a simple and efficient synthesis and evaluated as potential inhibitors of hNa(v)1.2 sodium channel currents. One member of this series (4) exhibited profound inhibition of Na(v)1.2 currents, emerging as a promising lead compound for further structure-activity relationship studies for the development of novel sodium channel blockers.
Weidenhagen; Herrmann; Wegner, Chemische Berichte, 1937, vol. 70, p. 575
作者:Weidenhagen、Herrmann、Wegner
DOI:——
日期:——
Anticonvulsant activity of 2,4(1H)-diarylimidazoles in mice and rats acute seizure models
作者:Valentina Zuliani、Marco Fantini、Aradhya Nigam、James P. Stables、Manoj K. Patel、Mirko Rivara
DOI:10.1016/j.bmc.2010.09.029
日期:2010.11.15
2,4(1H)-Diarylimidazoles have been previously shown to inhibit hNaV1.2 sodium (Na) channel currents. Since many of the clinically used anticonvulsants are known to inhibit Na channels as an important mechanism of their action, these compounds were tested in two acute rodent seizure models for anticonvulsant activity (MES and scMet) and for sedative and ataxic side effects. Compounds exhibiting antiepileptic activity were further tested to establish a dose response curve (ED(50)). The experimental data identified four compounds with anticonvulsant activity in the MES acute seizure rodent model (compound 10, ED(50) = 61.7 mg/kg; compound 13, ED(50) = 46.8 mg/kg, compound 17, ED(50) = 129.5 mg/kg and compound 20, ED(50) = 136.7 mg/kg). Protective indexes (PI = TD(50)/ED(50)) ranged from 2.1 (compound 10) to greater than 3.6 (compounds 13, 17 and 20). All four compounds were shown to inhibit hNaV1.2 in a dose dependant manner. Even if a correlation between sodium channel inhibition and anticonvulsant activity was unclear, these studies identify four Na channel antagonists with anticonvulsant activity, providing evidence that these derivatives could be potential drug candidates for development as safe, new and effective antiepileptic drugs (AEDs). (C) 2010 Elsevier Ltd. All rights reserved.
[EN] COMPOSITION FOR DYEING KERATIN FIBRES, COMPRISING A PARTICULAR IMIDAZOLE COUPLER AND AN OXIDATION BASE<br/>[FR] COMPOSITION DE TEINTURE DE FIBRES DE KÉRATINE COMPRENANT UN COUPLEUR D'IMIDAZOLE PARTICULAIRE ET UNE BASE D'OXYDATION
申请人:OREAL
公开号:WO2015173321A1
公开(公告)日:2015-11-19
The invention relates to a composition comprising: i) at least one imidazole coupler of formula (I) with R1, R2 and R3 as defined in the description; ii) at least one oxidation base, preferably of heterocyclic and/or para-phenylenediamine type. The invention also relates to a process for dyeing keratin fibres using ingredients i) and ii); to a kit comprising ingredients i) and ii) and to the use of ingredient i) combined with ii) for dyeing keratin fibres, and to novel couplers. The composition of the invention leads to particularly powerful, chromatic and sparingly selective colourings. Furthermore, the colour build-up on keratin fibres treated with the composition of the invention is very satisfactory.