Bioisosteric Heterocyclic Versions of 7-{[2-(4-Phenyl-piperazin-1-yl)ethyl]propylamino}-5,6,7,8-tetrahydronaphthalen-2-ol: Identification of Highly Potent and Selective Agonists for Dopamine D3 Receptor with Potent in Vivo Activity
摘要:
In the current report, we extend the SAR study on our hybrid structure 7-{[2-(4-phenyl-piperazin-1-yl)ethyl]propylamino}-5,6,7,8-tetrahydronaphthalen-2-ol further to include heterocyclic bioisosteric analogues. Binding assays were carried out with HEK-293 cells expressing either D2 or D3 receptors with tritiated spiperone to evaluate inhibition constants (K). Functional activity of selected compounds in stimulating GTP gamma S binding was assessed with CHO cells expressing human D2 receptors and AtT-20 cells expressing human D3 receptors. The highest binding affinity and selectivity for D3 receptors were exhibited by (-)-34 (K-i = 0.92 nM and D2/D3 = 253). In the functional GTP gamma S binding assay, (-)-34 exhibited full agonist activity with picomolar affinity for D3 receptor with high selectivity (EC50 = 0.08 nM and D2/D3 = 248). In the in vivo rotational study, (-)-34 exhibited potent rotational activity in 6-OH-DA unilaterally lesioned rats with long duration of action, which indicates its potential application in neuroprotective treatment of Parkinson's disease.
Chloroquinoline–acetamide hybrids: a promising series of potential antiprotozoal agents
作者:Afreen Inam、Robyn L. Van Zyl、Natasha J. van Vuuren、Chien-Teng Chen、Fernando Avecilla、Subhash M. Agarwal、Amir Azam
DOI:10.1039/c5ra05472a
日期:——
In an endeavour to develop efficacious antiprotozoal agents chloroquinoline–acetamide hybrids were synthesized and screened in vitro against E. histolytica and P. falciparum and molecular docking studies were performed against PfDHFR.
[EN] AROMATIC HETEROCYCLIC CYCLOHEXYL AMINOALKYL PIPERIDINE DERIVATIVE, PREPARATION METHOD AND USE THEREOF<br/>[FR] DÉRIVÉ DE CYCLOHEXYL AMINOALKYL PIPÉRIDINE HÉTÉROCYCLIQUE AROMATIQUE, SON PROCÉDÉ DE PRÉPARATION ET SON UTILISATION<br/>[ZH] 芳杂环并环己烷基氨基烷基哌啶衍生物、制备方法及其用途
Synthesis of isonicotinic acid N′-arylidene-N-[2-oxo-2-(4-aryl-piperazin-1-yl)-ethyl]-hydrazides as antituberculosis agents
作者:Neelima Sinha、Sanjay Jain、Ajay Tilekar、Ram Shankar Upadhayaya、Nawal Kishore、Gour Hari Jana、Sudershan K. Arora
DOI:10.1016/j.bmcl.2005.01.073
日期:2005.3
A new series of antituberculosis agents 6-9 was designed, synthesized and evaluated for antituberculosis activity against Mycobacterium tuberculosis H(37)Rv and clinical isolates in an agar dilution method. Compound 9h showed comparable in vitro activity (MIC) to isoniazid against M. tuberculosis H(37)Rv and clinical isolates (sensitive strains) and superior activity against resistant strains of M. tuberculosis. (c) 2005 Elsevier Ltd. All rights reserved.
Structurally Constrained Hybrid Derivatives Containing Octahydrobenzo[<i>g</i> or <i>f</i>]quinoline Moieties for Dopamine D2 and D3 Receptors: Binding Characterization at D2/D3 Receptors and Elucidation of a Pharmacophore Model
作者:Dennis A. Brown、Prashant S. Kharkar、Ingrid Parrington、Maarten E. A. Reith、Aloke K. Dutta
DOI:10.1021/jm8008629
日期:2008.12.25
series of structurally constrained analogues based on hybrid compounds containing octahydrobenzo[g or f]quinoline moieties were designed, synthesized, and characterized for their binding to dopamine D2 and D3 receptors expressed in HEK-293 cells. Among the newly developed constrained molecules, trans-octahydrobenzo[f]quinolin-7-ol (8) exhibited the highest affinity for D2 and D3 receptors, the (-)-isomer