- Synthesis and biological evaluation of picolinamides and thiazole-2-carboxamides as mGluR5 (metabotropic glutamate receptor 5) antagonists
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We described here the synthesis and biological evaluation of picolinamides and thiazole-2-carboxamides as potential mGluR5 antagonists. We found that a series of thiazole derivatives 6 showed better inhibitory activity against mGluR5. Compounds 6bc and 6bj have been identified as potent antagonists (IC50 = 274 and 159 nM) showing excellent in vitro stability profile. Molecular docking study using the crystal structure of mGluR5 revealed that our compounds 6bc and 6bj fit the allosteric binding site of mavoglurant well.
- Vu, Hoang Nam,Kim, Ji Young,Hassan, Ahmed H.E.,Choi, Kihang,Park, Jong-Hyun,Park, Ki Duk,Lee, Jae Kyun,Pae, Ae Nim,Choo, Hyunah,Min, Sun-Joon,Cho, Yong Seo
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supporting information
p. 140 - 144
(2015/12/18)
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- Discovery of functionally selective 7,8,9,10-tetrahydro-7,10-ethano-1,2,4- triazolo[3,4-a]phthalazines as GABAA receptor agonists at the α3 subunit
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We have previously identified the 7,8,9,10-tetrahydro-7,10-ethano-1,2,4- triazolo[3,4-a]phthalazine (1) as a potent partial agonist for the 0.3 receptor subtype with 5-fold selectivity in binding affinity over α1. This paper describes a detailed investigation of the substituents on this core structure at both the 3- and 6-positions. Despite evaluating a wide range of groups, the maximum selectivity that could be achieved in terms of affinity for the α3 subtype over the α1 subtype was 12-fold (for 57). Although most analogues showed no selectivity in terms of efficacy, some did show partial agonism at α1 and antagonism at α3 (e.g., 25 and 75). However, two analogues tested (93 and 96), both with triazole substituents in the 6-position, showed significantly higher efficacy for the α3 subtype over the α1 subtype. This was the first indication that selectivity in efficacy in the required direction could be achieved in this series.
- Russell, Michael G. N.,Carling, Robert W.,Atack, John R.,Bromidge, Frances A.,Cook, Susan M.,Hunt, Peter,Isted, Catherine,Lucas, Matt,McKernan, Ruth M.,Mitchinson, Andrew,Moore, Kevin W.,Narquizian, Robert,Macaulay, Alison J.,Thomas, David,Thompson, Sally-Anne,Wafford, Keith A.,Castro, José L.
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p. 1367 - 1383
(2007/10/03)
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- An Infrared Study of Rotational Isomerism in Thiazole-2-carboxylates
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A series of alkyl thiazole-2-carboxylates containing a range of substituents at the 4- and 5-positions has been prepared.Solutions of these esters (mostly new compounds) show well resolved doublets in the i.r.C=O region which arise from rotational isomers.The higher wavenumber components are assigned to the more polar carbonyl O,S-anti-s-trans-rotamers and the lower wavenumber components to the carbonyl O,S-syn-s-trans-forms.Small, but systematic, differences between the methyl esters are noted.
- Kaye, Perry T.,Meakins, G. Denis,Willbe, Charles,Williams, Peter R.
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p. 2335 - 2339
(2007/10/02)
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