Synthesis of 7-Chloroquinoline Derivatives Using Mixed Lithium-Magnesium Reagents
作者:Valter E. Murie、Paula V. Nicolino、Thiago dos Santos、Guido Gambacorta、Rodolfo H. V. Nishimura、Icaro S. Perovani、Luciana C. Furtado、Leticia V. Costa-Lotufo、Anderson Moraes de Oliveira、Ricardo Vessecchi、Ian R. Baxendale、Giuliano C. Clososki
DOI:10.1021/acs.joc.1c01521
日期:2021.10.1
We have prepared a library of functionalizedquinolines through the magnesiation of 7-chloroquinolines under mild conditions, employing both batch and continuous flow conditions. The preparation involved the generation of mixed lithium-magnesium intermediates, which were reacted with different electrophiles. Mixed lithium-zinc reagents allowed the synthesis of halogenated and arylated derivatives. Some
A simple method for the synthesis of 4-arylselanyl-7-chloroquinolines used as in vitro acetylcholinesterase inhibitors and in vivo memory improvement
作者:Luis Fernando B. Duarte、Eduardo S. Barbosa、Renata L. Oliveira、Mikaela P. Pinz、Benhur Godoi、Ricardo F. Schumacher、Cristiane Luchese、Ethel A. Wilhelm、Diego Alves
DOI:10.1016/j.tetlet.2017.07.039
日期:2017.8
diselenides containing electron-donating and electron-withdrawing groups, affording the corresponding 4-aryl-7-chloroquinolines in high yields. The synthesized compounds were screened for their in vitroacetylcholinesterase (AChE) activity and our results demonstrated that the 7-chloro-4-[(4-fluorophenyl)selanyl]quinoline inhibited the AChE activity and improved memory in mice, making this compound is a potential
我们在这里描述了通过4,7-二氯喹啉与有机基硒醇的反应合成4-芳基戊基-7-氯喹啉的另一种方法,该反应是由二有机基二硒化物与H 3 PO 2(在H 2 O中为50 wt%)反应原位生成的)。这些反应在60°C的N 2气氛下有效地进行,并且适合于一系列包含给电子和吸电子基团的二有机基二硒化物,以高收率提供了相应的4-芳基-7-氯喹啉。筛选合成的化合物的体外 乙酰胆碱酯酶(AChE)活性,我们的结果表明7-氯-4-[(4-氟苯基)硒基]喹啉可抑制AChE活性并改善小鼠的记忆力,从而使该化合物成为治疗阿尔茨海默氏病的潜在治疗剂和其他神经退行性疾病。
Synthesis and antioxidant properties of novel quinoline–chalcogenium compounds
作者:Lucielli Savegnago、Aline I. Vieira、Natália Seus、Bruna S. Goldani、Micheli R. Castro、Eder João Lenardão、Diego Alves
DOI:10.1016/j.tetlet.2012.10.067
日期:2013.1
Herein we describe our results on the synthesis and antioxidant properties of 4-arylchalcogenyl-7-chloroquinolines. This new class of compounds has been synthesized in high yields by the reaction of 4,7-dichloroquinoline with diaryl dichalcogenides using KOH as base, DMSO as solvent at 100 C under air atmosphere and tolerates a range of substituents in the arylchalcogenyl moiety. The obtained compounds 3a and 3j were screened for in vitro antioxidant activity and the results demonstrated that compound 3j presented a potent antioxidant effect when compared to compound 3a. (C) 2012 Elsevier Ltd. All rights reserved.
Organoselenium compounds from purines: Synthesis of 6-arylselanylpurines with antioxidant and anticholinesterase activities and memory improvement effect
作者:Luis Fernando B. Duarte、Renata L. Oliveira、Karline C. Rodrigues、Guilherme T. Voss、Benhur Godoi、Ricardo F. Schumacher、Gelson Perin、Ethel A. Wilhelm、Cristiane Luchese、Diego Alves
DOI:10.1016/j.bmc.2017.11.019
日期:2017.12
We describe here a simple method for the synthesis of 6-arylselanylpurines with antioxidant and anticholinesteraseactivities, and memory improvement effect. This class of compounds was synthesized in good yields by a reaction of 6-chloropurine with diaryl diselenides using NaBH4 as reducing agent and PEG-400 as solvent. Furthermore, the synthesized compounds were evaluated for their in vitro antioxidant