- 1,5,7-TRISUBSTITUTED ISOQUINOLINE DERIVATIVES, PREPARATION THEREOF, AND USE THEREOF IN MEDICINES
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The present disclosure relates to 1,5,7-trisubstituted isoquinoline derivatives, their preparation and pharmaceutical use. In particular, the present disclosure discloses a compound of formula (I) or a pharmaceutically acceptable salt, stereoisomer, solvate or prodrug thereof, and a preparation method and use thereof. The definitions of the groups in the formula can be found in the specification and claims.
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Paragraph 0230; 0232; 0234
(2020/08/30)
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- Bis(het)aryl-1,2,3-triazole quinuclidines as α7 nicotinic acetylcholine receptor ligands: Synthesis, structure affinity relationships, agonism activity, [18F]-radiolabeling and PET study in rats
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In this paper we describe the design and synthesis of bis(Het)Aryl-1,2,3-triazole quinuclidine α7R ligands using an efficient three-step sequence including a Suzuki-Miyaura cross coupling reaction with commercially available and home-made boron derivatives. The exploration of SAR required the preparation of uncommon boron derivatives. Forty final drugs were tested for their ability to bind the target and nine of them exhibited Ki values below nanomolar concentrations. The best scores were always obtained when the 5-phenyl-2-thiophenyl core was attached to the triazole. The selectivity of these compounds towards the nicotinic α4β2 and serotoninergic 5HT3 receptors was assessed and their brain penetration was quantified by the preparation and in vivo evaluation of two [18F] radiolabelled derivatives. It can be expected from our results that some of these compounds will be suitable for further developments and will have effects on cognitive disorders.
- Ouach, Aziz,Vercouillie, Johnny,Bertrand, Emilie,Rodrigues, Nuno,Pin, Frederic,Serriere, Sophie,Boiaryna, Liliana,Chartier, Agnes,Percina, Nathalie,Tangpong, Pakorn,Gulhan, Zuhal,Mothes, Celine,Deloye, Jean-Bernard,Guilloteau, Denis,Page, Guylene,Suzenet, Franck,Buron, Frederic,Chalon, Sylvie,Routier, Sylvain
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p. 449 - 469
(2019/07/03)
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- Photoredox-catalyzed Direct Reductive Amination of Aldehydes without an External Hydrogen/Hydride Source
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The direct reductive amination of aromatic aldehydes has been realized using a photocatalyst under visible light irradiation. The single electron oxidation of an in situ formed aminal species generates the putative α-amino radical that eventually delivers the reductive amination product. This method is operationally simple, highly selective, and functional group tolerant, which allows the direct synthesis of benzylic amines by a unique mechanistic pathway.
- Alam, Rauful,Molander, Gary A.
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supporting information
p. 2680 - 2684
(2018/05/22)
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- Derisking the Cu-Mediated 18F-Fluorination of Heterocyclic Positron Emission Tomography Radioligands
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Molecules labeled with fluorine-18 (18F) are used in positron emission tomography to visualize, characterize and measure biological processes in the body. Despite recent advances in the incorporation of 18F onto arenes, the development of general and efficient approaches to label radioligands necessary for drug discovery programs remains a significant task. This full account describes a derisking approach toward the radiosynthesis of heterocyclic positron emission tomography (PET) radioligands using the copper-mediated 18F-fluorination of aryl boron reagents with 18F-fluoride as a model reaction. This approach is based on a study examining how the presence of heterocycles commonly used in drug development affects the efficiency of 18F-fluorination for a representative aryl boron reagent, and on the labeling of more than 50 (hetero)aryl boronic esters. This set of data allows for the application of this derisking strategy to the successful radiosynthesis of seven structurally complex pharmaceutically relevant heterocycle-containing molecules.
- Taylor, Nicholas J.,Emer, Enrico,Preshlock, Sean,Schedler, Michael,Tredwell, Matthew,Verhoog, Stefan,Mercier, Joel,Genicot, Christophe,Gouverneur, Véronique
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p. 8267 - 8276
(2017/06/27)
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- Structure-based optimization leads to the discovery of NSC765844, a highly potent, less toxic and orally efficacious dual PI3K/mTOR inhibitor
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The phosphoinositide 3-kinase (PI3K) family is one of the most frequently activated enzymes in a wide range of human cancers; thus, inhibition of PI3K represents a promising strategy for cancer therapy. Herein, a series of benzylamine substituted arylsulfonamides were designed and synthesized as dual PI3K/mTOR inhibitors using a strategy integrating focused library design and virtual screening, resulting in the discovery of 13b (NSC765844). The compound 13b exhibits highly potent enzyme inhibition with IC50s of 1.3, 1.8, 1.5, 3.8 and 3.8?nM for PI3Kα, β, γ, δ, and mTOR, respectively. 13b was further evaluated in NCI by an in?vitro cytotoxic screening program. Broad-spectrum antitumor activities with mean GI50value of 18.6?nM against approximately 60 human tumor cell lines were found. 13b displayed favorable physicochemical properties and superior pharmacokinetic profiles for animal studies. It significantly inhibited tumor growth when administered orally in an A549 non-small-cell lung carcinoma xenograft and BEL7404 human hepatocellular carcinoma xenograft models. On the basis of its excellent in?vivo efficacy and superior pharmacokinetic profiles, 13b has been selected for further preclinical investigation as a promising anticancer drug candidate.
- Han, Jinsong,Chen, Ying,Yang, Chao,Liu, Ting,Wang, Mingping,Xu, Haojie,Zhang, Ling,Zheng, Canhui,Song, Yunlong,Zhu, Ju
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p. 684 - 701
(2016/07/21)
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- Synthesis of amines with pendant boronic esters by borrowing hydrogen catalysis
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Amine alkylation reactions of alcohols have been performed in the presence of boronic ester groups to provide products which are known to have use as molecular sensors. The boronic ester moiety could be present in either the alcohol or amine starting mate
- Ma, Winson M. J.,James, Tony D.,Williams, Jonathan M. J.
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p. 4850 - 4853
(2013/10/08)
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- Kinase scaffold repurposing for neglected disease drug discovery: Discovery of an efficacious, lapatanib-derived lead compound for trypanosomiasis
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Human African trypanosomiasis (HAT) is a neglected tropical disease caused by the protozoan parasite Trypanosoma brucei. Because drugs in use against HAT are toxic and require intravenous dosing, new drugs are needed. Initiating lead discovery campaigns b
- Patel, Gautam,Karver, Caitlin E.,Behera, Ranjan,Guyett, Paul J.,Sullenberger, Catherine,Edwards, Peter,Roncal, Norma E.,Mensa-Wilmot, Kojo,Pollastri, Michael P.
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supporting information
p. 3820 - 3832
(2013/06/27)
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- HETEROCYCLIC COMPOUNDS USEFUL AS MK2 INHIBITORS
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The present invention describes tetracyclic compounds of formula (IA) or (IB), wherein the symbols R, X, A, Y, R2, R3 and D are as defined in the specification, their use in the treatment of certain diseases, e.g. depending on MK-2 or TNF activity, and wa
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Page/Page column 57-58
(2009/03/07)
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