- Identification of novel GLUT inhibitors
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The compound class of 1H-pyrazolo[3,4-d]pyrimidines was identified using HTS as very potent inhibitors of facilitated glucose transporter 1 (GLUT1). Extensive structure–activity relationship studies (SAR) of each ring system of the molecular framework was established revealing essential structural motives (i.e., ortho-methoxy substituted benzene, piperazine and pyrimidine). The selectivity against GLUT2 was excellent and initial in vitro and in vivo pharmacokinetic (PK) studies are encouraging.
- Siebeneicher, Holger,Bauser, Marcus,Buchmann, Bernd,Heisler, Iring,Müller, Thomas,Neuhaus, Roland,Rehwinkel, Hartmut,Telser, Joachim,Zorn, Ludwig
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p. 1732 - 1737
(2016/07/27)
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- Evaluation of N-phenyl homopiperazine analogs as potential dopamine D 3 receptor selective ligands
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A series of N-(2-methoxyphenyl)homopiperazine analogs was prepared and their affinities for dopamine D2, D3, and D4 receptors were measured using competitive radioligand binding assays. Several ligands exhibited high binding affinity and selectivity for the D3 dopamine receptor compared to the D2 receptor subtype. Compounds 11a, 11b, 11c, 11f, 11j and 11k had Ki values ranging from 0.7 to 3.9 nM for the D3 receptor with 30- to 170-fold selectivity for the D 3 versus D2 receptor. Calculated log P values (log P = 2.6-3.6) are within the desired range for passive transport across the blood-brain barrier. When the binding and the intrinsic efficacy of these phenylhomopiperazines was compared to those of previously published phenylpiperazine analogues, it was found that (a) affinity at D2 and D3 dopamine receptors generally decreased, (b) the D3 receptor binding selectivity (D2:D3 Ki value ratio) decreased and, (c) the intrinsic efficacy, measured using a forskolin-dependent adenylyl cyclase inhibition assay, generally increased.
- Li, Aixiao,Mishra, Yogesh,Malik, Maninder,Wang, Qi,Li, Shihong,Taylor, Michelle,Reichert, David E.,Luedtke, Robert R.,MacH, Robert H.
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p. 2988 - 2998
(2013/07/05)
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- THIENOPYRIDINE DERIVATIVES
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The present invention provides a compound promoting osteogenesis. The present invention provides a compound having the following general formula (I) wherein R 1 is H or alkyl, R 2 is R a S-, R a O-, R a NH-, R a (R b )N- or cyclic amino, and R a and R b are alkyl which may be substituted, cycloalkyl which may be substituted, or the like, or a pharmacologically acceptable salt thereof.
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Page/Page column 105
(2010/11/26)
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- DIHYDROPYRIDINE NPY ANTAGONISTS: PIPERAZINE DERIVATIVES
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A series of non-peptidergic antagonists of NPY have been synthesized and are comprised of piperazine and homopiperazine derivatives of 4-phenyl-1,4-dihydropyridines of Formula (I). STR1 As antagonists of NPY-induced feeding behavior, these compounds are e
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- Direct Substitution of Aromatic Ethers by Lithium Amides. A New Aromatic Amination Reaction
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Reaction of lithiated dialkylamines with methoxy aromatics in refluxing THF leads to products resulting from a direct ipso-substitution.Especially with lithiated secondary amines high conversions and selectivities are achieved.Sulfonyl-substituted aromatics react equally well, but halogenated aromatics give rise to side-products arising from a competing pathway via aryne intermediates.The scope and mechanistic implications of this novel nucleophilic amination reaction are described.
- Hoeve, Wolter ten,Kruse, Chris, G.,Luteyn, Jan M.,Thiecke, Janet R. G.,Wynberg, Hans
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p. 5101 - 5106
(2007/10/02)
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