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Li Q, Yan K, Zhu Y, Qi G, Wang Y, Hao WJ, Jiang B. Rh(III)-Catalyzed annulative aldehydic C-H functionalization for accessing ring-fluorinated benzo[b]azepin-5-ones. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2022.108014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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2
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5-[Aryloxypyridyl (or nitrophenyl)]-4H-1,2,4-triazoles as novel flexible benzodiazepine analogues: Synthesis, receptor binding affinity and lipophilicity-dependent anti-seizure onset of action. Bioorg Chem 2020; 106:104504. [PMID: 33279247 DOI: 10.1016/j.bioorg.2020.104504] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2020] [Revised: 11/19/2020] [Accepted: 11/19/2020] [Indexed: 02/06/2023]
Abstract
A new series of 5-(2-aryloxy-4-nitrophenyl)-4H-1,2,4-triazoles and 5-(2-aryloxy-3-pyridyl)-4H-1,2,4-triazoles, possessing C-3 thio or alkylthio substituents, was synthesized and evaluated for their benzodiazepine receptor affinity and anti-seizure activity. These analogues revealed similar to significantly superior affinity to GABAA/benzodiazepine receptor complex (IC50 values of 0.04-4.1 nM), relative to diazepam as the reference drug (IC50 value of 2.4 nM). To determine the onset of anti-seizure activity, the time-dependent effectiveness of i.p. administration of compounds on pentylenetetrazole induced seizure threshold was studied and a very good relationship was observed between the lipophilicity (cLogP) and onset of action of studied analogues (r2 = 0.964). The minimum effective dose of the compounds, determined at the time the analogues showed their highest activity, was demonstrated to be 0.025-0.1 mg/kg, relative to diazepam (0.025 mg/kg).
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3
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Gao H, Zhang G. Synthesis, Structure and Properties of Fused π‐Extended Acridone Derivatives. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000871] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Hongshuai Gao
- Jiangsu Co‐Innovation Center for Efficient Processing and Utilization of Forest Products College of Chemical Engineering Nanjing Forestry University Longpan Road 159 210037 Nanjing P. R. China
| | - Gang Zhang
- Jiangsu Co‐Innovation Center for Efficient Processing and Utilization of Forest Products College of Chemical Engineering Nanjing Forestry University Longpan Road 159 210037 Nanjing P. R. China
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4
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Verma S, Kumar M, Verma AK. Aza-Henry Reaction: Synthesis of Nitronaphthylamines from 2-(Alkynyl)benzonitriles. Org Lett 2020; 22:130-134. [PMID: 31825635 DOI: 10.1021/acs.orglett.9b04045] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
A transition-metal-free approach for construction of nitronaphthylamines has been developed for the first time through aza-henry, chemoselective, and regioselective annulation of 2-alkynylbenzonitriles with nitromethane. In addition, the strategy provides an elegant, operationally simple and atom-economical route for the synthesis of nitroamino substituted heterocyclic scaffolds, featuring a range of sensitive functional groups. The reaction could also devise acetonitrile and acetophenone as nucleophile. The protocol has been successfully implemented for late-stage modification of bioactive molecules.
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Affiliation(s)
- Shalini Verma
- Department of Chemistry , University of Delhi , Delhi 110007 , India
| | - Manoj Kumar
- Department of Chemistry , University of Delhi , Delhi 110007 , India
| | - Akhilesh K Verma
- Department of Chemistry , University of Delhi , Delhi 110007 , India
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5
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Dong J, Wang Z, Meng Q, Zhang Q, Huang G, Cui J, Li S. Development of 2-arylbenzo[h]quinolone analogs as selective CYP1B1 inhibitors. RSC Adv 2018; 8:15009-15020. [PMID: 35541321 PMCID: PMC9080015 DOI: 10.1039/c8ra00465j] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2018] [Accepted: 04/03/2018] [Indexed: 11/21/2022] Open
Abstract
The CYP1B1 enzyme is regarded as a potential target for cancer prevention and therapy. Based on the structure of α-naphthoflavone (ANF), diverse 2-arylbenzo[h]quinolone derivatives were designed, synthesized and evaluated as selective CYP1B1 inhibitors. Compared with ANF, although few of the title compounds possessed comparable or slightly higher CYP1B1 inhibitory activity, these compounds displayed a significantly increased selectivity toward CYP1B1 over CYP1A2. Among them compounds 5e, 5g and 5h potently inhibited the activity of CYP1B1 with IC50 values of 3.6, 3.9 and 4.1 nM respectively, paralleled by an excellent selectivity profile. On the basis of predicted clog P values, these target compounds may exhibit improved water-solubility compared to ANF. In particular, 5h showed a great superiority in the reversal of CYP1B1-mediated docetaxel resistance in vitro. The current study may serve as a good starting point for the further development of more potent as well as specific CYP1B1 inhibitors capable of reversing CYP1B1-mediated anticancer-drug resistance. 2-arylbenzo[h]quinolin-4(1H)-ones are developed as selective CYP1B1 inhibitors.![]()
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Affiliation(s)
- Jinyun Dong
- School of Pharmacy
- Shanghai Jiao Tong University
- Shanghai
- China
| | - Zengtao Wang
- School of Pharmacy
- Shanghai Jiao Tong University
- Shanghai
- China
| | - Qingqing Meng
- School of Pharmacy
- Shanghai Jiao Tong University
- Shanghai
- China
| | - Qijing Zhang
- School of Pharmacy
- Shanghai Jiao Tong University
- Shanghai
- China
| | - Guang Huang
- School of Pharmacy
- Shanghai Jiao Tong University
- Shanghai
- China
| | - Jiahua Cui
- School of Pharmacy
- Shanghai Jiao Tong University
- Shanghai
- China
| | - Shaoshun Li
- School of Pharmacy
- Shanghai Jiao Tong University
- Shanghai
- China
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Fernández M, Castaing M, Willis MC. Sequential catalysis: exploiting a single rhodium(i) catalyst to promote an alkyne hydroacylation-aryl boronic acid conjugate addition sequence. Chem Sci 2017; 8:536-540. [PMID: 28451201 PMCID: PMC5351800 DOI: 10.1039/c6sc03066a] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2016] [Accepted: 09/01/2016] [Indexed: 12/20/2022] Open
Abstract
We demonstrate that a single Rh(i) complex can promote two mechanistically distinct C-C bond-forming reactions - alkyne hydroacylation and aryl boronic acid conjugate addition - to deliver substituted ketone products from the controlled assembly of three readily available fragments. This is a rare example of a Rh(i)/Rh(iii) cycle and a redox neutral Rh(i) cycle being promoted by a single catalyst. The process is broad in scope, allowing significant variation of all three reaction components. Incorporation of an enantiomerically pure bis-phosphine ligand renders the process enantioselective. Superior levels of enantioselectivity (up to >99% ee) can be achieved from using a two catalyst system, whereby two Rh(i) complexes, one incorporating an achiral bis-phosphine ligand and the second a chiral diene ligand, are introduced at the start of the reaction sequence.
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Affiliation(s)
- Maitane Fernández
- Department of Chemistry , University of Oxford , Chemical Research Laboratory , Mansfield Road , Oxford , OX1 3TA , UK .
| | - Matthias Castaing
- Department of Chemistry , University of Oxford , Chemical Research Laboratory , Mansfield Road , Oxford , OX1 3TA , UK .
| | - Michael C Willis
- Department of Chemistry , University of Oxford , Chemical Research Laboratory , Mansfield Road , Oxford , OX1 3TA , UK .
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7
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Zhang C, Lu LQ, Deng P, Tian XK, Liu MY, Li AM. Synthesis of 3,4-diaminobenzenethiol and its application in gold nanoparticle-based colorimetric determination of copper ions. RSC Adv 2016. [DOI: 10.1039/c6ra13681h] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
3,4-Diaminobenzenethiol can react with AuNPs via a strong covalent Au–S bond. The exposed amino functional groups on the benzene ring from neighboring AuNPs could bind to copper ions, resulting in AuNP aggregation.
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Affiliation(s)
- Chi Zhang
- Nano-Mineral Materials and Application Engineering Research Center of Ministry of Education
- Faculty of Materials Science and Chemistry
- China University of Geosciences
- Wuhan 430074
- P. R. China
| | - Li-Qiang Lu
- Nano-Mineral Materials and Application Engineering Research Center of Ministry of Education
- Faculty of Materials Science and Chemistry
- China University of Geosciences
- Wuhan 430074
- P. R. China
| | - Pan Deng
- Nano-Mineral Materials and Application Engineering Research Center of Ministry of Education
- Faculty of Materials Science and Chemistry
- China University of Geosciences
- Wuhan 430074
- P. R. China
| | - Xi-Ke Tian
- Nano-Mineral Materials and Application Engineering Research Center of Ministry of Education
- Faculty of Materials Science and Chemistry
- China University of Geosciences
- Wuhan 430074
- P. R. China
| | - Ming-Yang Liu
- Hubei Environment Monitoring Center
- Wuhan 430072
- P. R. China
| | - Ai-Min Li
- Hubei Environment Monitoring Center
- Wuhan 430072
- P. R. China
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A Review of the Updated Pharmacophore for the Alpha 5 GABA(A) Benzodiazepine Receptor Model. INTERNATIONAL JOURNAL OF MEDICINAL CHEMISTRY 2015; 2015:430248. [PMID: 26682068 PMCID: PMC4657098 DOI: 10.1155/2015/430248] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/11/2015] [Revised: 06/16/2015] [Accepted: 07/02/2015] [Indexed: 12/22/2022]
Abstract
An updated model of the GABA(A) benzodiazepine receptor pharmacophore of the α5-BzR/GABA(A) subtype has been constructed prompted by the synthesis of subtype selective ligands in light of the recent developments in both ligand synthesis, behavioral studies, and molecular modeling studies of the binding site itself. A number of BzR/GABA(A) α5 subtype selective compounds were synthesized, notably α5-subtype selective inverse agonist PWZ-029 (1) which is active in enhancing cognition in both rodents and primates. In addition, a chiral positive allosteric modulator (PAM), SH-053-2′F-R-CH3 (2), has been shown to reverse the deleterious effects in the MAM-model of schizophrenia as well as alleviate constriction in airway smooth muscle. Presented here is an updated model of the pharmacophore for α5β2γ2 Bz/GABA(A) receptors, including a rendering of PWZ-029 docked within the α5-binding pocket showing specific interactions of the molecule with the receptor. Differences in the included volume as compared to α1β2γ2, α2β2γ2, and α3β2γ2 will be illustrated for clarity. These new models enhance the ability to understand structural characteristics of ligands which act as agonists, antagonists, or inverse agonists at the Bz BS of GABA(A) receptors.
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9
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Gao P, Fan M, Bai Z, Wei Y. Hypervalent Iodine(III)-Mediated Benzannulation of Enamines with Alkynes: an Efficient Synthesis of Substituted Aminonaphthoic Acid Derivatives. CHINESE J CHEM 2015. [DOI: 10.1002/cjoc.201400802] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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10
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Singh S, Althagafi I, Yadav P, Panwar R, Kumar A, Pratap R. Base mediated synthesis of α-aminated aroyl/acetylnaphthalenes through [4+2] annulations. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.09.089] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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11
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Mashayekh S, Rahmanipour N, Mahmoodi B, Ahmadi F, Motaharian D, Shahhosseini S, Shafaroodi H, Banafshe HR, Shafiee A, Navidpour L. Synthesis, receptor affinity and effect on pentylenetetrazole-induced seizure threshold of novel benzodiazepine analogues: 3-Substituted 5-(2-phenoxybenzyl)-4H-1,2,4-triazoles and 2-amino-5-(phenoxybenzyl)-1,3,4-oxadiazoles. Bioorg Med Chem 2014; 22:1929-37. [DOI: 10.1016/j.bmc.2014.01.041] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2013] [Revised: 01/21/2014] [Accepted: 01/22/2014] [Indexed: 10/25/2022]
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12
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Singh S, Yadav P, Sahu SN, Althagafi I, Kumar A, Kumar B, Ram VJ, Pratap R. Synthesis of 1-amino-2-aroyl/acetylnaphthalenes through a base mediated one pot inter and intramolecular C–C bond formation strategy. Org Biomol Chem 2014; 12:4730-7. [DOI: 10.1039/c4ob00432a] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Base mediated synthesis of highly functionalized aroyl/acetylnaphthalenes by the reaction of 2-(1-cyano-2,2-bis(methylthio)vinyl)benzonitrile and aryl methyl ketone or acetone has been reported.
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Affiliation(s)
- Surjeet Singh
- Department of Chemistry
- University of Delhi
- Delhi, India
| | - Pratik Yadav
- Department of Chemistry
- University of Delhi
- Delhi, India
| | | | | | - Abhinav Kumar
- Department of Chemistry
- University of Lucknow
- Lucknow, India
| | - Brijesh Kumar
- Division of SAIF
- Central Drug Research Institute
- Lucknow, India
| | - Vishnu Ji Ram
- Department of Chemistry
- University of Lucknow
- Lucknow, India
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13
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Castaing M, Wason SL, Estepa B, Hooper JF, Willis MC. 2-Aminobenzaldehydes as versatile substrates for rhodium-catalyzed alkyne hydroacylation: application to dihydroquinolone synthesis. Angew Chem Int Ed Engl 2013; 52:13280-3. [PMID: 24222398 PMCID: PMC4227557 DOI: 10.1002/anie.201308127] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2013] [Indexed: 11/23/2022]
Affiliation(s)
- Matthias Castaing
- Department of Chemistry, University of Oxford, Chemistry Research LaboratoryMansfield Road, Oxford, OX1 3TA (UK)
| | - Sacha L Wason
- Department of Chemistry, University of Oxford, Chemistry Research LaboratoryMansfield Road, Oxford, OX1 3TA (UK)
| | - Beatriz Estepa
- Department of Chemistry, University of Oxford, Chemistry Research LaboratoryMansfield Road, Oxford, OX1 3TA (UK)
| | - Joel F Hooper
- Department of Chemistry, University of Oxford, Chemistry Research LaboratoryMansfield Road, Oxford, OX1 3TA (UK)
| | - Michael C Willis
- Department of Chemistry, University of Oxford, Chemistry Research LaboratoryMansfield Road, Oxford, OX1 3TA (UK)
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14
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Castaing M, Wason SL, Estepa B, Hooper JF, Willis MC. 2-Aminobenzaldehydes as Versatile Substrates for Rhodium-Catalyzed Alkyne Hydroacylation: Application to Dihydroquinolone Synthesis. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201308127] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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15
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Chang MY, Wu MH, Chen YL. One-Pot Synthesis of Substituted Tetrahydrocyclobuta[a]naphthalenes by Domino Aldol Condensation/Olefin Migration/Electrocyclization. Org Lett 2013; 15:2822-5. [DOI: 10.1021/ol401152w] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Meng-Yang Chang
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Ming-Hao Wu
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Yeh-Long Chen
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 807, Taiwan
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16
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Reddy RS, Prasad PK, Ahuja BB, Sudalai A. CuCN-Mediated Cascade Cyclization of 4-(2-Bromophenyl)-2-butenoates: A High-Yield Synthesis of Substituted Naphthalene Amino Esters. J Org Chem 2013; 78:5045-50. [DOI: 10.1021/jo400244h] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- R. Santhosh Reddy
- Chemical Engineering and Process Development Division, National Chemical Laboratory, Pashan Road, Pune 411
008, India
| | - Pragati K Prasad
- Chemical Engineering and Process Development Division, National Chemical Laboratory, Pashan Road, Pune 411
008, India
| | - Brij Bhushan Ahuja
- Chemical Engineering and Process Development Division, National Chemical Laboratory, Pashan Road, Pune 411
008, India
| | - Arumugam Sudalai
- Chemical Engineering and Process Development Division, National Chemical Laboratory, Pashan Road, Pune 411
008, India
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17
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Anzini M, Valenti S, Braile C, Cappelli A, Vomero S, Alcaro S, Ortuso F, Marinelli L, Limongelli V, Novellino E, Betti L, Giannaccini G, Lucacchini A, Daniele S, Martini C, Ghelardini C, Di Cesare Mannelli L, Giorgi G, Mascia MP, Biggio G. New insight into the central benzodiazepine receptor-ligand interactions: design, synthesis, biological evaluation, and molecular modeling of 3-substituted 6-phenyl-4H-imidazo[1,5-a][1,4]benzodiazepines and related compounds. J Med Chem 2011; 54:5694-711. [PMID: 21751815 DOI: 10.1021/jm2001597] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
3-Substituted 6-phenyl-4H-imidazo[1,5-a][1,4]benzodiazepines and related compounds were synthesized as central benzodiazepine receptor (CBR) ligands. Most of the compounds showed high affinity for bovine and human CBR, their K(i) values spanning from the low nanomolar to the submicromolar range. In particular, imidazoester 5f was able to promote a massive flow of (36)Cl(-) in rat cerebrocortical synaptoneurosomes overlapping its efficacy profile with that of a typical full agonist. Compound 5f was then examined in mice for its pharmacological effects where it proved to be a safe anxiolytic agent devoid of the unpleasant myorelaxant and amnesic effects of the classical 1,4-benzodiazepines. Moreover, the selectivity of some selected compounds has been assessed in recombinant α(1)β(2)γ(2)L, α(2)β(1)γ(2)L, and α(5)β(2)γ(2)L human GABA(A) receptors. Finally, some compounds were submitted to molecular docking calculations along with molecular dynamics simulations in the Cromer's GABA(A) homology model.
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Affiliation(s)
- Maurizio Anzini
- Dipartimento Farmaco Chimico Tecnologico and European Research Centre for Drug Discovery and Development, Università degli Studi di Siena, Via A. Moro, 53100 Siena, Italy.
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18
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Pimlott SL, Sutherland A. Molecular tracers for the PET and SPECT imaging of disease. Chem Soc Rev 2010; 40:149-62. [PMID: 20818455 DOI: 10.1039/b922628c] [Citation(s) in RCA: 227] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The development of positron emission tomography (PET) and single photon emission computed tomography (SPECT) imaging continues to grow due to the ability of these techniques to allow the non-invasive in vivo visualisation of biological processes at the molecular and cellular levels. As well as finding application for the diagnosis of disease, these techniques have also been used in the drug discovery process. Crucial to the growth of these techniques is the continued development of molecular probes that can bind to the target biological receptor with high selectivity. This tutorial review describes the use of PET and SPECT for molecular imaging and highlights key strategies for the development of molecular probes for the imaging of both cancer and neurological diseases.
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Affiliation(s)
- Sally L Pimlott
- West of Scotland Radionuclide Dispensary, NHS Greater Glasgow and Clyde, Glasgow G11 6NT, UK
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19
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Berezhnoy D, Gibbs TT, Farb DH. Docking of 1,4-benzodiazepines in the alpha1/gamma2 GABA(A) receptor modulator site. Mol Pharmacol 2009; 76:440-50. [PMID: 19483108 DOI: 10.1124/mol.109.054650] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Positive allosteric modulation of the GABA(A) receptor (GABA(A)R) via the benzodiazepine recognition site is the mechanism whereby diverse chemical classes of therapeutic agents act to reduce anxiety, induce and maintain sleep, reduce seizures, and induce conscious sedation. The binding of such therapeutic agents to this allosteric modulatory site increases the affinity of GABA for the agonist recognition site. A major unanswered question, however, relates to how positive allosteric modulators dock in the 1,4-benzodiazepine (BZD) recognition site. In the present study, the X-ray structure of an acetylcholine binding protein from the snail Lymnea stagnalis and the results from site-directed affinity-labeling studies were used as the basis for modeling of the BZD binding pocket at the alpha(1)/gamma(2) subunit interface. A tethered BZD was introduced into the binding pocket, and molecular simulations were carried out to yield a set of candidate orientations of the BZD ligand in the binding pocket. Candidate orientations were refined based on known structure-activity and stereospecificity characteristics of BZDs and the impact of the alpha(1)H101R mutation. Results favor a model in which the BZD molecule is oriented such that the C5-phenyl substituent extends approximately parallel to the plane of the membrane rather than parallel to the ion channel. Application of this computational modeling strategy, which integrates site-directed affinity labeling with structure-activity knowledge to create a molecular model of the docking of active ligands in the binding pocket, may provide a basis for the design of more selective GABA(A)R modulators with enhanced therapeutic potential.
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Affiliation(s)
- D Berezhnoy
- Laboratory of Molecular Neurobiology, Department of Pharmacology and Experimental Therapeutics, Boston University School of Medicine, Boston, MA 02118, USA
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20
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Affiliation(s)
- Simon M Ametamey
- Center for Radiopharmaceutical Science of ETH, PSI and USZ, Department of Chemistry and Applied Biosciences of ETH, CH-8093 Zurich, Switzerland.
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21
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Liszkiewicz H, Kowalska MW, Wietrzyk J. Synthesis and Antiproliferative Activity in vitro of New Tricyclic 2-Thioxo-1 H ,3 H -imidazo[4,5-b]pyridine Derivatives. PHOSPHORUS SULFUR 2007. [DOI: 10.1080/10426500600892594] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Hanna Liszkiewicz
- a Department of Drugs Technology , Wroclaw Medical University , Poland
| | | | - Joanna Wietrzyk
- c Institute of Immunology and Experimental Therapy, Polish Academy of Sciences , Wroclaw , Poland
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22
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Falcó JL, Lloveras M, Buira I, Teixidó J, Borrell JI, Méndez E, Terencio J, Palomer A, Guglietta A. Design, synthesis and biological activity of acyl substituted 3-amino-5-methyl-1,4,5,7-tetrahydropyrazolo[3,4-b]pyridin-6-ones as potential hypnotic drugs. Eur J Med Chem 2005; 40:1179-87. [PMID: 16095764 DOI: 10.1016/j.ejmech.2005.06.008] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2005] [Revised: 06/14/2005] [Accepted: 06/15/2005] [Indexed: 11/29/2022]
Abstract
Among the known non-benzodiazepinic hypnotic drugs acting on the alpha1 subunit of the GABA-A receptor, Zolpidem, Zaleplon and Indiplon have showed high affinity and selectivity. Following a design methodology including pharmacophoric requirements and ADME-predicted properties, we have synthesized a library of 3-amino-4,5-dihydro-1H-pyrazolo[3,4-b]pyridin-6(7H)-ones and their N1-alkyl derivatives as new scaffolds for designing non-benzodiazepine BZ receptor ligands.
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Affiliation(s)
- José L Falcó
- Medicinal Chemistry Department, R and D Center, Ferrer Internacional S.A., Juan de Sada 32, E-08028 Barcelona, Spain.
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23
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Akbarzadeh T, Tabatabai SA, Khoshnoud MJ, Shafaghi B, Shafiee A. Design and synthesis of 4H-3-(2-phenoxy)phenyl-1,2,4-triazole derivatives as benzodiazepine receptor agonists. Bioorg Med Chem 2003; 11:769-73. [PMID: 12538007 DOI: 10.1016/s0968-0896(02)00469-8] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
A series of new 5-substituted analogues of 4H-3-(2-phenoxy)phenyl-1,2,4-triazole and its chlorinated derivatives was designed and prepared. Conformational analysis and superimposition of energy minima conformers of the compounds on estazolam, a known benzodiazepine receptor agonist, revealed that the main proposed benzodiazepine pharmacophores were well matched. Rotarod and pentylenetetrazole-induced lethal convulsion tests showed that the introduction of an amino group in position 5 of 1,2,4-triazole ring especially in chlorinated derivatives had the best effect which was comparable with diazepam.
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Affiliation(s)
- Tahmineh Akbarzadeh
- Department of Medicinal Chemistry, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
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24
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Yang YL, Chang FR, Wu YC. Total synthesis of 3,4-dihydrobenzo[h]quinazolin-4-one and structure elucidation of perlolidine and samoquasine A. Tetrahedron Lett 2003. [DOI: 10.1016/s0040-4039(02)02577-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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25
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Beroza P, Villar HO, Wick MM, Martin GR. Chemoproteomics as a basis for post-genomic drug discovery. Drug Discov Today 2002; 7:807-14. [PMID: 12546968 DOI: 10.1016/s1359-6446(02)02371-1] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The large number of small organic compounds now available for drug-lead screening has led to numerous methods for classifying molecular similarity and diversity, the aim being to restore a balance between the quantity and drug-like quality of compounds in small-molecule libraries. Whereas structural and physicochemical attributes continue to be emphasized in compound selection for drug-lead screening, chemoproteomics--the use of biological information to guide chemistry--offers a highly efficient alternative to small-molecule characterization that can accelerate drug discovery in the post-genomic era.
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Affiliation(s)
- Paul Beroza
- Telik, 750 Gateway Blvd, South San Francisco, CA 94080, USA.
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26
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Scott MK, Demeter DA, Nortey SO, Dubinsky B, Shank RP, Reitz AB. New directions in anxiolytic drug research. PROGRESS IN MEDICINAL CHEMISTRY 2000; 36:169-200. [PMID: 10818673 DOI: 10.1016/s0079-6468(08)70047-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
Abstract
Agents to treat anxiety have gained in acceptance and importance in the fast pace of life in the second half of this century. The discovery and refinement of the benzodiazepines represented a quantum leap in therapy from early compounds which were essentially sedatives. With the advent of molecular biology, an understanding of the basic mechanism by which the benzodiazepines exert their effects was revealed through the discovery and isolation of the GABAA receptor and its benzodiazepine binding site. This, in turn, has enabled benzodiazepines to be classified into a broad spectrum of pharmacological types ranging from agonist to inverse agonist, thus allowing fine tuning with respect to side-effects. Consequently, newer, more promising agents have emerged which bind at the GABAA BZD site and have reduced side-effects. An example of this is RWJ-51204 (92), a member of a novel structural type which is superior to several marketed benzodiazepines in animals in terms of efficacy and side-effects. The cost-conscious environment of managed health care presents continuing challenges to the discovery and development of safe, highly efficacious, and cost-effective anxiolytic agents.
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Affiliation(s)
- M K Scott
- Drug Discovery Division, R. W. Johnson Pharmaceutical Research Institute, Spring House, Pennsylvania 19477, USA
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27
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Selleri S, Bruni F, Costagli C, Costanzo A, Guerrini G, Ciciani G, Costa B, Martini C. Synthesis and BZR affinity of pyrazolo[1,5-a]pyrimidine derivatives. Part 1: study of the structural features for BZR recognition. Bioorg Med Chem 1999; 7:2705-11. [PMID: 10658575 DOI: 10.1016/s0968-0896(99)00232-1] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Examination of the pharmacophoric points of the pyrazolo[1,5-a]pyrimidine derivatives, ligands for BZR, previously published led us to the design of a novel class of 3,6-diaryl-4,7-dihydro-pyrazolo[1,5-a]pyrimidin-7-ones and to determine the groups involved in the BZR recognition.
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Affiliation(s)
- S Selleri
- Department of Pharmaceutical Sciences, University of Firenze, Florence, Italy.
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28
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Wu C, Biediger RJ, Kogan TP. A Highly Practical Route to 7-Hydroxy-1,3-dihydro-2H-1,4-benzodiazepin-2-one fromp-Anisidine. SYNTHETIC COMMUN 1999. [DOI: 10.1080/00397919908085984] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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29
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Guerrini G, Costanzo A, Bruni F, Ciciani G, Selleri S, Gratteri P, Costa B, Martini C, Lucacchini A. Benzodiazepine receptor ligands. III. Synthesis and biological evaluation of 2- and/or 3-substituted pyrazolo[5,1-c][1,2,4]benzotriazine 5-oxides. FARMACO (SOCIETA CHIMICA ITALIANA : 1989) 1999; 54:375-89. [PMID: 10576777 DOI: 10.1016/s0014-827x(99)00044-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A new series of 2- and/or 3-substituted pyrazolo [5,1-c][benzotriazine 5-oxides and their 8-chloro derivatives were synthesized, and their benzodiazepine receptor (BZR) affinities were evaluated in vitro in comparison to lead compound 3-ethoxycarbonyl-8-chloropyrazolo[5,1-c][1,2,4]benzotriazine 5-oxide (29) [1,2]. None of the new compounds showed significant affinity for BZR. On the basis of a pharmacophore/receptor model suggested for lead compound 29, some hypotheses to explain the inactivity of new derivatives are discussed.
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Affiliation(s)
- G Guerrini
- Dipartimento di Scienze Farmaceutiche, Università degli Studi di Firenze, Florence, Italy
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30
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Maryanoff BE, Nortey SO, McNally JJ, Sanfilippo PJ, McComsey DF, Dubinsky B, Shank RP, Reitz AB. Potential anxiolytic agents. 3. Novel A-ring modified pyrido[1,2-a]benzimidazoles. Bioorg Med Chem Lett 1999; 9:1547-52. [PMID: 10386933 DOI: 10.1016/s0960-894x(99)00240-1] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A variety of pyrido[1,2-a]benzimidazoles (PBIs) modified on the A-ring were prepared and evaluated for affinity to the benzodiazepine binding site on the GABA-A receptor and in animal models predictive of anxiolytic activity in humans. A-ring benzo-fused derivative 7 exhibited potent activity, as did the 6- and 7-pyrido compounds 3 and 4.
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Affiliation(s)
- B E Maryanoff
- Drug Discovery, R.W. Johnson Pharmaceutical Research Institute, Spring House, PA 19477, USA
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31
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Synthesis, benzodiazepine receptor affinity and in vivo testing of 3-aryl-4,7-dihydro-6-(N1′-alkylpyrazol-3′ - or 5′-yl)pyrazolo[1,5-a]pyrimidin-7-ones. Eur J Med Chem 1998. [DOI: 10.1016/s0223-5234(97)89638-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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32
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Benzodiazepine receptor ligands — Part II. Synthesis and biological evaluation of pyrazolo[5,1-c][1,2,4]benzotriazine 4-oxide. Eur J Med Chem 1998. [DOI: 10.1016/s0223-5234(98)80013-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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33
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Tanaka H, Kirihara S, Yasumatsu H, Yakushiji T, Nakao T. Synthesis and evaluation of novel 2-aryl-2,5,6,7-tetrahydro-3H-thieno [2′,3′:6,7]cyclohepta[1,2-c]pyridazin-3-ones and 2-aryl-5, 6-dihydrothieno[2,3-h]cinnolin-3(2H)-ones as anxiolytics. Eur J Med Chem 1997. [DOI: 10.1016/s0223-5234(97)83286-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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34
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Kobayashi K, Takada K, Tanaka H, Uneda T, Kitamura T, Morikawa O, Konishi H. An Efficient General Synthesis of 1-Amino-2-naphthalenecarboxylic Acid Derivatives Based on a Tandem Conjugate Addtion-Enolate Nitrile Coupling Sequence. CHEM LETT 1996. [DOI: 10.1246/cl.1996.25] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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35
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Trapani G, Franco M, Latrofa A, Carotti A, Gerichi G, Serra M, Biggio G, Liso G. Synthesis and benzodiazepine receptor binding of some imidazoand pyrimido[2,1-b]benzothiazoles. Eur J Med Chem 1996. [DOI: 10.1016/0223-5234(96)89553-5] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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36
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Harrison PW, Barlin GB, Davies LP, Ireland SJ, Mátyus P, Wong MG. Syntheses, pharmacological evaluation and molecular modelling of substituted 6-alkoxyimidazo[1,2-b]pyridazines as new ligands for the benzodiazepine receptor. Eur J Med Chem 1996. [DOI: 10.1016/0223-5234(96)85873-9] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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37
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Benzodiazepine receptor ligands. Synthesis and pharmacological evaluation of 3-, 7- and 8-substituted [5,1-c][1,2,4]benzotriazines and 5-oxide derivatives. Part I. Eur J Med Chem 1996. [DOI: 10.1016/0223-5234(96)80363-1] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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38
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Okabe M, Sun RC. Improved synthesis of 2-amino-5-chlorophenyl-2′-pyrrylketone, a key intermediate in the synthesis of HIV Tat-antagonists. Tetrahedron 1995. [DOI: 10.1016/0040-4020(94)01053-3] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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39
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Synthesis and structure-activity analysis of 2-(4-chlorophenyl)-5,6-dihydrothieno[2′,3′:2,3]thiepino[4,5-c]pyridazin-3(2H)-ones as ligands for benzodiazepine receptors. Eur J Med Chem 1995. [DOI: 10.1016/0223-5234(96)88305-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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40
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Syntheses of 5-thienyl and 5-furyl-substituted benzodiazepines: probes of the pharmacophore for benzodiazepine receptor agonists. Eur J Med Chem 1995. [DOI: 10.1016/0223-5234(96)88259-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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41
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Gupta SP. Recent advances in benzodiazepine receptor (BZR) binding studies. PROGRESS IN DRUG RESEARCH. FORTSCHRITTE DER ARZNEIMITTELFORSCHUNG. PROGRES DES RECHERCHES PHARMACEUTIQUES 1995; 45:67-106. [PMID: 8545542 DOI: 10.1007/978-3-0348-7164-8_3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- S P Gupta
- Department of Chemistry, Birla Institute of Technology and Science, Pilani, India
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