- Discovery of the Oral Leukotriene C4 Synthase Inhibitor (1 S,2 S)-2-({5-[(5-Chloro-2,4-difluorophenyl)(2-fluoro-2-methylpropyl)amino]-3-methoxypyrazin-2-yl}carbonyl)cyclopropanecarboxylic Acid (AZD9898) as a New Treatment for Asthma
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While bronchodilators and inhaled corticosteroids are the mainstay of asthma treatment, up to 50% of asthmatics remain uncontrolled. Many studies show that the cysteinyl leukotriene cascade remains highly activated in some asthmatics, even those on high-dose inhaled or oral corticosteroids. Hence, inhibition of the leukotriene C4 synthase (LTC4S) enzyme could provide a new and differentiated core treatment for patients with a highly activated cysteinyl leukotriene cascade. Starting from a screening hit (3), a program to discover oral inhibitors of LTC4S led to (1S,2S)-2-({5-[(5-chloro-2,4-difluorophenyl)(2-fluoro-2-methylpropyl)amino]-3-methoxypyrazin-2-yl}carbonyl)cyclopropanecarboxylic acid (AZD9898) (36), a picomolar LTC4S inhibitor (IC50 = 0.28 nM) with high lipophilic ligand efficiency (LLE = 8.5), which displays nanomolar potency in cells (peripheral blood mononuclear cell, IC50,free = 6.2 nM) and good in vivo pharmacodynamics in a calcium ionophore-stimulated rat model after oral dosing (in vivo, IC50,free = 34 nM). Compound 36 mitigates the GABA binding, hepatic toxicity signal, and in vivo toxicology findings of an early lead compound 7 with a human dose predicted to be 30 mg once daily.
- Munck Af Rosensch?ld, Magnus,Johannesson, Petra,Nikitidis, Antonios,Tyrchan, Christian,Chang, Hui-Fang,R?nn, Robert,Chapman, Dave,Ullah, Victoria,Nikitidis, Grigorios,Glader, Pernilla,K?ck, Helena,Bonn, Britta,W?gberg, Fredrik,Bj?rkstrand, Eva,Andersson, Ulf,Swedin, Linda,Rohman, Mattias,Andreasson, Theresa,Bergstr?m, Eva Lamm,Jiang, Fanyi,Zhou, Xiao-Hong,Lundqvist, Anders J.,Malmberg, Anna,Ek, Margareta,Gordon, Euan,Pettersen, Anna,Ripa, Lena,Davis, Andrew M.
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supporting information
p. 7769 - 7787
(2019/10/11)
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- One-pot synthesis of novel (2R,4S)-N-aryl-4-hydroxy-1-(2,2,2-trifluoroacetyl) pyrrolidine-2-carboxamides via TiO 2 -NPs and Pd(PPh3)2Cl2 catalysts and investigation of their biological activities
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Abstract: A new class of (2R,4S)-N-aryl-4-hydroxy-1-(2,2,2-trifluoroacetyl)pyrrolidine-2-carboxamide compounds was synthesized by a facile one-pot reaction of trans-4-hydroxy proline and trifluoroacetimidoyl chlorides in the presence of TiO 2-n
- Darehkordi, Ali,Ramezani, Mahin
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p. 305 - 315
(2017/05/29)
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- Acetanilide and bromoacetyl-lysine derivatives as activators for human histone deacetylase 8
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In the current study, seven compounds (i.e. 1–7) were found to be novel activators for the Nε-acetyl-lysine deacetylation reaction catalyzed by human histone deacetylase 8 (HDAC8). When assessed with the commercially available HDAC8 peptide substrate Fluor-de-Lys-HDAC8 that harbors the unnatural 7-amino-4-methylcoumarin (AMC) residue immediately C-terminal to the Nε-acetyl-lysine residue to be deacetylated, our compounds exhibited comparable activation potency to that of TM-2-51, the strongest HDAC8 activator reported in the current literature. However, when assessed with an AMC-less peptide substrate derived from the native HDAC8 non-histone substrate protein Zinc finger protein ZNF318, while our compounds were all found to be able to activate HDAC8 deacetylation reaction, TM-2-51 was found not to be able to. Our compounds also seemed to be largely selective for HDAC8 over other classical HDACs. Moreover, treatment with the strongest activator among our compounds (i.e. 7) was found to decrease the KM of the above AMC-less HDAC8 substrate, while nearly maintaining the kcat of the HDAC8-catalyzed deacetylation on this substrate.
- Mukhtar, Yusif M.,Huang, Yajun,Liu, Jiajia,Chen, Di,Zheng, Weiping
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supporting information
p. 2319 - 2323
(2017/05/09)
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- DIHYDROPYRIDINE DERIVATIVES FOR USE AS HUMAN NEUTROPHIL ELASTASE INHIBITORS
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The invention relates to novel dihydropyridine derivatives, of Formula (I) processes for their preparation, and their use in medicaments, especially for the treatment of chronic obstructive pulmonary diseases, acute coronary syndrome, acute myocardial infarction and heart failure development.
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- A new, convenient and selective 4-dimethylaminopyridine-catalyzed trifluoroacetylation of anilines with ethyl trifluoroacetate
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A new, convenient, and selective 4-dimethylaminopyridine-catalyzed trifluoroacetylation of anilines with ethyl trifluoroacetate is described. Anilines, containing other functional groups, e.g. alcohols, phenols, hindered secondary amines, and secondary anilines, are also selectively trifluoroacetylated in high yields under these newly developed conditions. (C) 2000 Elsevier Science Ltd.
- Prashad,Hu,Har,Repic,Blacklock
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p. 9957 - 9961
(2007/10/03)
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- 2-Trifluoromethyl-3-quinoline carboxamides, analgesic and anti-inflammatory compositions and methods employing them
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Novel 3-quinoline carboxamides of the formula STR1 wherein X' is in the 5,6,7 or 8-position and is selected from the group consisting of hydrogen, halogen, straight or branched alkyl and alkoxy of 1 to 5 carbon atoms, --CF3, --SCF3 and --OCF3, R1 is selected from the group consisting of hydrogen and alkyl of 1 to 4 carbon atoms, R2 ' is selected from the group consisting of thiazolyl, 4,5-dihydrothiazolyl, pyridinyl, oxazolyl, isoxazolyl, imidazolyl, pyrimidyl and tetrazolyl, all optionally substituted with alkyl of 1 to 4 carbon atoms and phenyl optionally substituted with at least one member of the group consisting of alkyl and alkoxy of 1 to 4 carbon atoms, --CF3, --NO2 and halogen and their non-toxic, pharmaceutically acceptable acid addition salts having analgesic and anti-inflammatory activity and novel intermediates and process for their preparation.
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