此处描述的策略已允许合成一系列4-氨基喹啉抗疟药。对先前合成方法的实质性改进包括用纯胺而不是苯酚进行亲核取代,区域选择性还原烷基化以将二氨基烷烃侧链上的末端伯胺(12a-20a)转化为二乙氨基,以及通过使用碱性氧化铝的柱色谱法进行纯化。用硼氘化钠(与硼氢化钠相比)进行区域选择性还原烷基化后获得的1 H nmr光谱表明,该还原烷基化是通过形成并随后原位还原相应的二酰胺而进行的。
Synthesis and in vitro antitubercular activity of a series of quinoline derivatives
作者:Marcus V.N. de Souza、Karla C. Pais、Carlos R. Kaiser、Mônica A. Peralta、Marcelle de L. Ferreira、Maria C.S. Lourenço
DOI:10.1016/j.bmc.2009.01.013
日期:2009.2
A series of 33 quinolinederivatives have been synthesized and evaluated for their in vitro antibacterial activity against Mycobacterium tuberculosis H37Rv using the Alamar Blue susceptibility test and the activity expressed as the minimum inhibitory concentration (MIC) in μg/mL. Compounds 5e and 5f exhibited a significant activity at 6.25 and 3.12 μg/mL, respectively, when compared with first line
Quinoline–Pyrimidine Hybrids: Synthesis, Antiplasmodial Activity, SAR, and Mode of Action Studies
作者:Kamaljit Singh、Hardeep Kaur、Peter Smith、Carmen de Kock、Kelly Chibale、Jan Balzarini
DOI:10.1021/jm4014778
日期:2014.1.23
For the treatment of malaria which affects nearly 200 million people each year and the continued exacerbation by the emergence of drug resistance to most of the available antimalarials, the "covalent bitherapy" suggests hybrid molecules to be the next-generation antimalarial drugs. In this investigation, new hybrids of 4-aminoquinoline and pyrimidine moieties that show antiplasmodial activity in the nM range against chloroquine-resistant as well as chloroquine-sensitive strains of Plasmodium falciparum have been prepared. Cytotoxicity evaluation and mode of action of most potent hybrid molecule have been conducted.
2-Aminopyrimidine based 4-aminoquinoline anti-plasmodial agents. Synthesis, biological activity, structure–activity relationship and mode of action studies
作者:Kamaljit Singh、Hardeep Kaur、Kelly Chibale、Jan Balzarini、Susan Little、Prasad V. Bharatam
DOI:10.1016/j.ejmech.2012.03.007
日期:2012.6
2-Aminopyrimidine based 4-aminoquinolines were synthesized using an efficacious protocol. Some of the compounds showed in vitro anti-plasmodial activity against drug-sensitive CQ(S) (3D7) and drug-resistant CQ(R) (K1) strains of Plasmodium falciparum in the nM range. In particular, 5-isopropyloxycarbonyl-6-methyl-4-(2-nitrophenyl)-2-[(7-chloroquinolin-4-ylamino)butylamino] pyrimidine depicted the lowest IC50 (3.6 nM) value (56-fold less than CQ) against CQ(R) strain. Structure activity profile and binding with heme, mu-oxo-heme have been studied. Binding assays with DNA revealed better binding with target parasite type AT rich pUC18 DNA. Most compounds were somewhat cytotoxic, but especially cytostatic. Molecular docking analysis with Pf DHFR allowed identification of stabilizing interactions. (C) 2012 Elsevier Masson SAS. All rights reserved.
Antimalarials: Synthesis of 4-aminoquinolines that circumvent drug resistance in malaria parasites
作者:Dibyendu De、Larry D. Byers、Donald J. Krogstad
DOI:10.1002/jhet.5570340149
日期:1997.1
substitution with neat amine rather than in phenol, regioselective reductive alkylation to convert the terminal primaryamine (12a–20a) on the diaminoalkane side chain to a diethylamino group, and purification by column chromatography with basic alumina. The 1H nmr spectra obtained after regioselective reductive alkylation with sodium borodeuteride (in comparison with sodiumborohydride) demonstrated that
此处描述的策略已允许合成一系列4-氨基喹啉抗疟药。对先前合成方法的实质性改进包括用纯胺而不是苯酚进行亲核取代,区域选择性还原烷基化以将二氨基烷烃侧链上的末端伯胺(12a-20a)转化为二乙氨基,以及通过使用碱性氧化铝的柱色谱法进行纯化。用硼氘化钠(与硼氢化钠相比)进行区域选择性还原烷基化后获得的1 H nmr光谱表明,该还原烷基化是通过形成并随后原位还原相应的二酰胺而进行的。
[EN] NUCLEOSIDE AND NUCLEOTIDE CONJUGATE COMPOUNDS AND USES THEREOF<br/>[FR] COMPOSÉS CONJUGUÉS DE NUCLÉOSIDE ET DE NUCLÉOTIDE ET LEURS UTILISATIONS