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Nieto CT, Manchado A, Belda L, Diez D, Garrido NM. 2-Phenethylamines in Medicinal Chemistry: A Review. MOLECULES (BASEL, SWITZERLAND) 2023; 28:molecules28020855. [PMID: 36677913 PMCID: PMC9864394 DOI: 10.3390/molecules28020855] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Revised: 01/10/2023] [Accepted: 01/11/2023] [Indexed: 01/19/2023]
Abstract
A concise review covering updated presence and role of 2-phenethylamines in medicinal chemistry is presented. Open-chain, flexible alicyclic amine derivatives of this motif are enumerated in key therapeutic targets, listing medicinal chemistry hits and appealing screening compounds. Latest reports in discovering new bioactive 2-phenethylamines by research groups are covered too.
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Ujiantari NSO, Ham S, Nagiri C, Shihoya W, Nureki O, Hutchinson D, Schuster D. Pharmacophore-guided Virtual Screening to Identify New β3-Adrenergic Receptor Agonists. Mol Inform 2021; 41:e2100223. [PMID: 34963040 PMCID: PMC9400856 DOI: 10.1002/minf.202100223] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Accepted: 12/18/2021] [Indexed: 11/21/2022]
Abstract
The β3‐adrenergic receptor (β3‐AR) is found in several tissues such as adipose tissue and urinary bladder. It is a therapeutic target because it plays a role in thermogenesis, lipolysis, and bladder relaxation. Two β3‐AR agonists are used clinically: mirabegron 1 and vibegron 2, which are indicated for overactive bladder syndrome. However, these drugs show adverse effects, including increased blood pressure in mirabegron patients. Hence, new β3‐AR agonists are needed as starting points for drug development. Previous pharmacophore modeling studies of the β3‐AR did not involve experimental in vitro validation. Therefore, this study aimed to conduct prospective virtual screening and confirm the biological activity of virtual hits. Ligand‐based pharmacophore modeling was performed since no 3D structure of human β3‐AR is yet available. A dataset consisting of β3‐AR agonists was prepared to build and validate the pharmacophore models. The best model was employed for prospective virtual screening, followed by physicochemical property filtering and a docking evaluation. To confirm the activity of the virtual hits, an in vitro assay was conducted, measuring cAMP levels at the cloned β3‐AR. Out of 35 tested compounds, 4 compounds were active in CHO−K1 cells expressing the human β3‐AR, and 8 compounds were active in CHO−K1 cells expressing the mouse β3‐AR.
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Antiradical, antimicrobial and enzyme inhibition evaluation of sulfonamide derived esters; synthesis, X-Ray analysis and DFT studies. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2018.07.116] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Beinat C, Reekie T, Hibbs D, Xie T, Olson TT, Xiao Y, Harvey A, O'Connor S, Coles C, Tsanaktsidis J, Kassiou M. Investigations of amide bond variation and biaryl modification in analogues of α7 nAChR agonist SEN12333. Eur J Med Chem 2014; 84:200-5. [PMID: 25019477 DOI: 10.1016/j.ejmech.2014.07.029] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2014] [Revised: 07/02/2014] [Accepted: 07/03/2014] [Indexed: 10/25/2022]
Abstract
Several lines of experimental evidence support the involvement of the α7 nAChR in schizophrenia and Alzheimer's disease. Modulators of the α7 nAChR have been extensively reviewed for the treatment of the cognitive deficits associated with these pathologies. SEN12333 represents a novel α7 nAChR agonist chemotype with potential for reduced side effects but requiring further SAR exploration. The present work investigates the amide bond of SEN12333, specifically its connectivity and replacement with the tetrazole functionality, a known cis amide isostere. The results reveal the original amide bond connectivity of SEN12333 to be favorable for binding affinity and agonist activity at α7 nAChRs. The use of a tetrazole isostere completely abolishes affinity and functional activity and suggests that SEN12333 binds in a linear conformation. Results reported herein also suggest the pyridine nitrogen within the terminal aromatic ring of SEN12333 is not essential for binding affinity or functional activity. Further SAR investigations involving manipulation of other moieties contained within SEN12333 are warranted.
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Affiliation(s)
- Corinne Beinat
- School of Chemistry, The University of Sydney, Sydney, NSW 2006, Australia
| | - Tristan Reekie
- School of Chemistry, The University of Sydney, Sydney, NSW 2006, Australia
| | - David Hibbs
- School of Pharmacy, The University of Sydney, Sydney, NSW 2006, Australia
| | - Teresa Xie
- Department of Pharmacology and Physiology, Georgetown University, Washington, DC 20057, USA
| | - Thao T Olson
- Department of Pharmacology and Physiology, Georgetown University, Washington, DC 20057, USA
| | - Yingxian Xiao
- Department of Pharmacology and Physiology, Georgetown University, Washington, DC 20057, USA
| | | | | | | | - John Tsanaktsidis
- CSIRO Materials Science & Engineering, Ian Wark Laboratory, Bayview Avenue, Clayton Victoria 3168, Australia
| | - Michael Kassiou
- School of Chemistry, The University of Sydney, Sydney, NSW 2006, Australia; Discipline of Medical Radiation Sciences, The University of Sydney, Sydney, NSW 2006, Australia; Brain and Mind Research Institute, Sydney, NSW 2050, Australia.
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El-Gaby MSA. Syntheses of Hitherto Unknown Thiazole, Ylidene and Pyridinethione Derivatives Having a Piperidin-1-yl Moiety and Their Use as Antimicrobial Agents. J CHIN CHEM SOC-TAIP 2013. [DOI: 10.1002/jccs.200400020] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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6
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Perrone MG, Scilimati A. β3-Adrenoceptor ligand development history through patent review. Expert Opin Ther Pat 2011; 21:505-36. [DOI: 10.1517/13543776.2011.561316] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Senthil Kumar P, Bharatam PV. Comparative 3D QSAR study on β(1)-, β(2)-, and β(3)-adrenoceptor agonists. Med Chem Res 2009; 19:1121-1140. [PMID: 21170122 PMCID: PMC2988205 DOI: 10.1007/s00044-009-9257-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2009] [Accepted: 09/02/2009] [Indexed: 11/15/2022]
Abstract
A quantitative structure–activity relationship study of tryptamine-based derivatives of β1-, β2-, and β3-adrenoceptor agonists was conducted using comparative molecular field analysis (CoMFA). Correlation coefficients (cross-validated r2) of 0.578, 0.595, and 0.558 were obtained for the three subtypes, respectively, in three different CoMFA models. All three CoMFA models have different steric and electrostatic contributions, implying different requirements inside the binding cavity. The CoMFA coefficient contour plots of the three models and comparisons among these plots provide clues regarding the main chemical features responsible for the biological activity variations and also result in predictions which correlate very well with the observed biological activity. Based on the analysis, a summary regeospecific description of the requirements for improving β-adrenoceptor subtype selectivity is given.
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Affiliation(s)
- P Senthil Kumar
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research, (NIPER), Sector 67, S. A. S. Nagar, Mohali, 160 062 India
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Telvekar VN, Patel DJ, Jadhav NC, Mishra SJ. Three-dimensional QSAR and pharmacophore mapping of biphenyl benzoic acid derivatives as selective human β3-adrenergic receptor agonists. Med Chem Res 2009. [DOI: 10.1007/s00044-009-9261-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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9
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Discovery of novel series of benzoic acid derivatives containing biphenyl ether moiety as potent and selective human β3-adrenergic receptor agonists: Part IV. Bioorg Med Chem Lett 2008; 18:5037-40. [DOI: 10.1016/j.bmcl.2008.08.009] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2008] [Accepted: 08/04/2008] [Indexed: 01/22/2023]
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10
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Sato M, Hutchinson DS, Evans BA, Summers RJ. The beta3-adrenoceptor agonist 4-[[(Hexylamino)carbonyl]amino]-N-[4-[2-[[(2S)-2-hydroxy-3-(4-hydroxyphenoxy)propyl]amino]ethyl]-phenyl]-benzenesulfonamide (L755507) and antagonist (S)-N-[4-[2-[[3-[3-(acetamidomethyl)phenoxy]-2-hydroxypropyl]amino]-ethyl]phenyl]benzenesulfonamide (L748337) activate different signaling pathways in Chinese hamster ovary-K1 cells stably expressing the human beta3-adrenoceptor. Mol Pharmacol 2008; 74:1417-28. [PMID: 18684840 DOI: 10.1124/mol.108.046979] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
This study identifies signaling pathways activated by the beta(2)-/beta(3)-adrenoceptor (AR) agonist zinterol, the selective beta(3)-AR agonist L755507, and the selective beta(3)-AR antagonist L748337 in CHO-K1 cells expressing human beta(3)-adrenoceptors. Zinterol and L755507 caused a robust concentration-dependent increase in cAMP accumulation (pEC(50) values of 8.5 and 12.3, respectively), whereas L748337 had low efficacy. Maximal cAMP accumulation with zinterol and L755507 was increased after pretreatment with pertussis toxin, indicating that the human beta(3)-AR couples to G(i) and to G(s). In contrast to cAMP, zinterol, L755507 and L748337 increased phosphorylation of extracellular signal-regulated kinase 1/2 (Erk1/2) with very high potency (pEC(50) values of 10.9, 11.7, and 11.6). These compounds also stimulated phosphorylation of p38 mitogen-activated protein kinase (MAPK) but with much lower potency than Erk1/2 (pEC(50) values of 5.9, 5.5, and 5.7, respectively). Pertussis toxin completely blocked Erk1/2 and p38 MAPK phosphorylation in response to L748337, demonstrating a requirement for G(i/o) coupling, whereas L755507-stimulated p38 MAPK phosphorylation was not inhibited by pertussis toxin, and Erk1/2 phosphorylation was inhibited by only 30%. We found that high levels of cAMP interfered with agonist-activated p38 MAPK phosphorylation. L748337 increased extracellular acidification rate (ECAR) in the cytosensor microphysiometer with efficacy similar to zinterol and L755507, albeit with lower potency (pEC(50) value of 7.2 compared with zinterol, 8.1, and L755507, 8.6). The ECAR response to L748337 was largely via activation of p38 MAPK, demonstrated by 65% inhibition with 4-[4-(4-fluorophenyl)-1-(3-phenylpropyl)-5-(4-pyridinyl)-1H-imidazol-2-yl]-3-butyn-1-ol (RWJ67657). We conclude that the beta(3)-AR agonist L755507 couples to both G(s) and G(i) to activate adenylate cyclase and MAPK signaling, whereas the beta(3)-AR antagonist L748337 couples predominantly to G(i) to activate MAPK signaling.
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Affiliation(s)
- Masaaki Sato
- Department of Pharmacology, P.O. Box 13E, Monash University VIC 3800, Australia
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Washburn WN, Harper TW, Wu G, Godfrey JD, McCann P, Girotra R, Shao C, Zhang H, Gavai A, Mikkilineni A, Dejneka T, Ahmed S, Caringal Y, Hangeland J, Zhang M, Cheng PTW, Russell AD, Skwish S, Slusarchyk DA, Allen GT, Frohlich BH, Abboa-Offei BE, Cap M, Waldron TL, George RJ, Tesfamariam B, Dickinson KE, Seymour AA, Sher PM. Arylpropanolamines: Selective β3 agonists arising from strategies to mitigate phase I metabolic transformations. Bioorg Med Chem Lett 2007; 17:4290-6. [PMID: 17533126 DOI: 10.1016/j.bmcl.2007.05.030] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2007] [Revised: 05/07/2007] [Accepted: 05/09/2007] [Indexed: 10/23/2022]
Abstract
Utilization of N-substituted-4-hydroxy-3-methylsulfonanilidoethanolamines 1 as selective beta(3) agonists is complicated by their propensity to undergo metabolic oxidative N-dealkylation, generating 0.01-2% of a very potent alpha(1) adrenergic agonist 2. A summary of the SAR for this hepatic microsomal conversion precedes presentation of strategies to maintain the advantages of chemotype 1 while mitigating the consequences of N-dealkylation. This effort led to the identification of 4-hydroxy-3-methylsulfonanilidopropanolamines 15 for which the SAR for the unique stereochemical requirements for binding to the beta adrenergic receptors culminated in the identification of the potent, selective beta(3) agonist 15f.
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Affiliation(s)
- W N Washburn
- Bristol-Myers Squibb Pharmaceutical Research Institute, PO Box 4000, Princeton, NJ 08543, USA.
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Shinozuka T, Nakao A, Saito K, Naito S. A Practical Method for the Preparation of 4-Nitrogen-substituted Benzoic Acids. CHEM LETT 2006. [DOI: 10.1246/cl.2006.1090] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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13
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Harada H, Hirokawa Y, Suzuki K, Hiyama Y, Oue M, Kawashima H, Kato H, Yoshida N, Furutani Y, Kato S. Discovery of a novel and potent human and rat beta3-adrenergic receptor agonist, [3-[(2R)-[[(2R)-(3-chlorophenyl)-2-hydroxyethyl]amino]propyl]-1H-indol-7-yloxy]acetic acid. Chem Pharm Bull (Tokyo) 2005; 53:184-98. [PMID: 15684518 DOI: 10.1248/cpb.53.184] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
In search for potent and selective beta3-adrenergic receptor (beta3-AR) agonists as potential drugs for the treatment of type II diabetes and obesity, a novel series of 1-(3-chlorophenyl)-2-aminoethanol derivatives were prepared and evaluated for their biological activity at human beta1-, beta2-, and beta3-ARs and rat beta3-AR expressed in Chinese hamster ovary (CHO) cells. Replacement of the right-hand side (RHS, benzene ring) in the 'first generation' beta3-AR agonists BRL 37344 and CL 316243 with a 1H-indole ring gave compound 31 with unique pharmacological properties among beta3-AR agonists. Initial in vitro assays showed that 31 possesses modest rat and human beta3-ARs agonistic activity. Introduction of various substituent into the indole nucleus of 31 afforded a number of compounds with good beta3-ARs agonistic activity. In particular, 90 having a carboxylic acid functionality at the 7-position of the indole nucleus showed the most potent human beta3-AR agonistic activity. Finally, optical resolution of 90 led to the identification of the most promising compound, [3-[(2R)-[[(2R)-(3-chlorophenyl)-2-hydroxyethyl]amino]propyl]-1H-indol-7-yloxy]acetic acid (96, AJ-9677). This compound exhibited potent human beta3-AR agonistic activity (EC50=0.062 nM, IA=116%) with 210- and 103-fold selectivity over human beta2-AR and beta1-AR, respectively. Compound 96 also exhibited potent rat beta3-AR agonistic activity (EC50=0.016 nM, IA=110%). Moreover, repeated oral administration of 96 inhibited body weight gain and significantly decreased glucose, insulin, free fatty acid, and triglyceride concentrations in plasma in KK-Ay/Ta mice. On the basis of this pharmacological profile, 96 entered clinical development as a drug for the treatment of type II diabetes and obesity.
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Affiliation(s)
- Hiroshi Harada
- Chemistry Research Laboratories, Dainippon Pharmaceutical Co. Ltd, Osaka, Japan.
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Prathipati P, Saxena AK. Characterization of β3-adrenergic receptor: determination of pharmacophore and 3D QSAR model for β3 adrenergic receptor agonism. J Comput Aided Mol Des 2005; 19:93-110. [PMID: 16075304 DOI: 10.1007/s10822-005-1558-7] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2004] [Accepted: 02/01/2005] [Indexed: 10/25/2022]
Abstract
The beta3-adrenoreceptor (beta3-AR) has been shown to mediate various pharmacological and physiological effects such as lipolysis, thermogenesis, and intestinal smooth muscle relaxation. It also plays an important role in glucose homeostasis and energy balance. Molecular modeling studies were undertaken to develop predictive pharmacophoric hypothesis and 3D-QSAR model, which may explain variations in beta3-AR agonistic activity in terms of chemical features and physicochemical properties. The two softwares, CATALYST for pharmacophoric alignment and APEX-3D for 3D-QSAR modeling were used to establish the structure activity relationships for beta3-AR agonistic activity. Among the several statistically significant models, the selection of the best pharmacophore and 3D-QSAR model was based on its ability to estimate the activity of external test sets of similar and different structural types along with the reasonable consistency of the model with the limited information of the active site of beta3-AR. The final 3D-QSAR model was derived using the pharmacophoric alignments from the hypothesis which consisted of four chemical features: basic or positive ionizable feature on the nitrogen of the aryloxypropylamino group, two ring aromatic features corresponding to the phenyl ring of the phenoxide and the benzenesulphonamido groups and a hydrogen-bond donor (HBD) in the vicinity of the nitrogen atom of the benzenesulphonamido group with the most active molecule mapping in an energetically favorable extended conformation. This hypothesis was in agreement with the site directed mutagenesis studies on human beta3-AR and correlated well the observed and estimated activity both in, training and both the external test sets. It also mapped reasonably well to six beta3-AR agonists of different structural classes under clinical development and thus this hypothesis may have a universal applicability in providing a powerful template for virtual screening and also for designing new chemical entities (NCEs) as beta3-AR agonists.
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Affiliation(s)
- Philip Prathipati
- Division of Medicinal and Process Chemistry, Central Drug Research Institute, 226001, Lucknow, India
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15
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Nakajima Y, Hamashima H, Washizuka KI, Tomishima Y, Ohtake H, Imamura E, Miura T, Kayakiri H, Kato M. Discovery of a novel, potent and selective human β3-adrenergic receptor agonist. Bioorg Med Chem Lett 2005; 15:251-4. [PMID: 15603933 DOI: 10.1016/j.bmcl.2004.11.001] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2004] [Revised: 11/01/2004] [Accepted: 11/01/2004] [Indexed: 11/18/2022]
Abstract
The discovery of a novel, potent and selective beta(3)-adrenergic receptor (AR) agonist is described. SAR studies demonstrated the structural requirements for activity and selectivity. Compound 1c, which showed good beta(3)-AR activity and selectivity, was identified and pharmacokinetics were investigated.
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Affiliation(s)
- Yutaka Nakajima
- Medicinal Chemistry Research Laboratories, Fujisawa Pharmaceutical Co. Ltd, 1-6, Kashima 2-Chome, Yodogawa-Ku, Osaka 532-8514, Japan.
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16
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Matulenko MA, Hakeem AA, Kolasa T, Nakane M, Terranova MA, Uchic ME, Miller LN, Chang R, Donnelly-Roberts DL, Namovic MT, Moreland RB, Brioni JD, Stewart AO. Synthesis and functional activity of (2-aryl-1-piperazinyl)-N-(3-methylphenyl)acetamides: selective dopamine D4 receptor agonists. Bioorg Med Chem 2004; 12:3471-83. [PMID: 15186832 DOI: 10.1016/j.bmc.2004.04.035] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2004] [Revised: 04/23/2004] [Accepted: 04/28/2004] [Indexed: 11/27/2022]
Abstract
Diaryl piperazine acetamides were identified as potent and selective dopamine D(4) receptor agonists. Our strategy is based on an amide bond reversal of an acid sensitive, dopamine D(4) receptor partial agonist, PD 168077. This reversal provided compounds with excellent potency and improved stability. Systematic evaluation of the substitution on the aryl piperazine portion revealed a significant effect on functional activity. The synthesis and biological activity of these new dopamine D(4) agonists is discussed.
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Affiliation(s)
- Mark A Matulenko
- Neuroscience Research, Global Pharmaceutical Research, Abbott Laboratories, Abbott Park, IL 60064, USA.
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Hu B, Jennings LL. Orally bioavailable beta 3-adrenergic receptor agonists as potential therapeutic agents for obesity and type-II diabetes. PROGRESS IN MEDICINAL CHEMISTRY 2003; 41:167-94. [PMID: 12774694 DOI: 10.1016/s0079-6468(02)41005-3] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/02/2023]
Affiliation(s)
- Baihua Hu
- Wyeth Research, P.O. Box 42528, Philadelphia, PA 19101, USA
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Hu B, Ellingboe J, Han S, Largis E, Lim K, Malamas M, Mulvey R, Niu C, Oliphant A, Pelletier J, Singanallore T, Sum FW, Tillett J, Wong V. Novel (4-piperidin-1-yl)-phenyl sulfonamides as potent and selective human beta(3) agonists. Bioorg Med Chem 2001; 9:2045-59. [PMID: 11504641 DOI: 10.1016/s0968-0896(01)00114-6] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
A series of novel (4-piperidin-1-yl)-phenyl sulfonamides was prepared and evaluated for their biological activity on the human beta(3)-adrenergic receptor (AR). Replacement of the 3,4-dihydroxyl group of the catechol moiety with 4-hydroxyl-3-methyl sulfonamide on the left-hand side of the compounds resulted in a number of potent full agonists at the beta(3) receptor. Modification of the right-hand side of the compounds by incorporation of a free carboxylic acid resulted in a few potent human beta(3) agonists with low affinities for beta(1)- and beta(2)-ARs. N-Alkyl substitution on the 4-piperidin-1-yl-phenylamine further increased the beta(3) potency while maintaining the selectivity. For example, sulfonamide 48 is a potent full beta(3) agonist (EC(50)=0.004 microM, IA=1.0) with > 500-fold selectivity over beta(1)- and beta(2)-ARs.
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Affiliation(s)
- B Hu
- Chemical Sciences, Wyeth-Ayerst Research, Pearl River, NY 10965, USA.
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