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He Y, Wu H, Liang Y, Deng H, Xiang L, Gu J, Zhang J. Regioselective Access to 2-Iminoimidazolidines via AgF-Mediated Cascade Reactions. J Org Chem 2022; 87:7480-7486. [PMID: 35549272 DOI: 10.1021/acs.joc.2c00219] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A convergent access to substituted 2-iminoimidazolidines from aromatic amines and N-propargyl S-methylthiourea is developed via Ag(I)-mediated cascade guanylation-cyclization reactions. This method features high regioselectivity, excellent efficiency, and mild reaction conditions. Subsequent deprotection of the Boc (tert-butyloxycarbonyl) group under acidic conditions provides expedient access to aryl 2-aminoimidazole derivatives in a convenient manner.
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Affiliation(s)
- Yiting He
- Artemisinin Research Center & The First Affiliated Hospital, Guangzhou University of Chinese Medicine, 12 Jichang Road, Guangzhou 510405, China
| | - Haiting Wu
- Artemisinin Research Center & The First Affiliated Hospital, Guangzhou University of Chinese Medicine, 12 Jichang Road, Guangzhou 510405, China
| | - Yunshi Liang
- Artemisinin Research Center & The First Affiliated Hospital, Guangzhou University of Chinese Medicine, 12 Jichang Road, Guangzhou 510405, China
| | - Huiying Deng
- Artemisinin Research Center & The First Affiliated Hospital, Guangzhou University of Chinese Medicine, 12 Jichang Road, Guangzhou 510405, China
| | - Lingling Xiang
- Artemisinin Research Center & The First Affiliated Hospital, Guangzhou University of Chinese Medicine, 12 Jichang Road, Guangzhou 510405, China
| | - Jiangyong Gu
- Research Centre for Integrative Medicine, School of Basic Medical Science, Guangzhou University of Chinese Medicine, Guangzhou 510006, China
| | - Jing Zhang
- Artemisinin Research Center & The First Affiliated Hospital, Guangzhou University of Chinese Medicine, 12 Jichang Road, Guangzhou 510405, China
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2
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Schultz KJ, Colby SM, Lin VS, Wright AT, Renslow RS. Ligand- and Structure-Based Analysis of Deep Learning-Generated Potential α2a Adrenoceptor Agonists. J Chem Inf Model 2021; 61:481-492. [PMID: 33404240 DOI: 10.1021/acs.jcim.0c01019] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The α2a adrenoceptor is a medically relevant subtype of the G protein-coupled receptor family. Unfortunately, high-throughput techniques aimed at producing novel drug leads for this receptor have been largely unsuccessful because of the complex pharmacology of adrenergic receptors. As such, cutting-edge in silico ligand- and structure-based assessment and de novo deep learning methods are well positioned to provide new insights into protein-ligand interactions and potential active compounds. In this work, we (i) collect a dataset of α2a adrenoceptor agonists and provide it as a resource for the drug design community; (ii) use the dataset as a basis to generate candidate-active structures via deep learning; and (iii) apply computational ligand- and structure-based analysis techniques to gain new insights into α2a adrenoceptor agonists and assess the quality of the computer-generated compounds. We further describe how such assessment techniques can be applied to putative chemical probes with a case study involving proposed medetomidine-based probes.
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Affiliation(s)
- Katherine J Schultz
- Biological Sciences Division, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Sean M Colby
- Biological Sciences Division, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Vivian S Lin
- Biological Sciences Division, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Aaron T Wright
- Biological Sciences Division, Pacific Northwest National Laboratory, Richland, Washington 99352, United States.,The Gene and Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, Washington 99163, United States
| | - Ryan S Renslow
- Biological Sciences Division, Pacific Northwest National Laboratory, Richland, Washington 99352, United States.,The Gene and Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, Washington 99163, United States
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3
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McMullan M, Kelly B, Mihigo HB, Keogh AP, Rodriguez F, Brocos-Mosquera I, García-Bea A, Miranda-Azpiazu P, Callado LF, Rozas I. Di-aryl guanidinium derivatives: Towards improved α2-Adrenergic affinity and antagonist activity. Eur J Med Chem 2020; 209:112947. [PMID: 33139112 DOI: 10.1016/j.ejmech.2020.112947] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Revised: 09/18/2020] [Accepted: 10/13/2020] [Indexed: 11/27/2022]
Abstract
Compounds with excellent receptor engagement displaying α2-AR antagonist activity are useful not only for therapeutic purposes (e.g. antidepressants), but also to help in the crystallization of this particular GPCR. Therefore, based on our broad experience in the topic, we have prepared eighteen di-aryl (phenyl and/or pyridin-2-yl) mono- or di-substituted guanidines and 2-aminoimidazolines. The in vitro α2-AR binding affinity experiments in human brain tissue showed the advantage of a 2-aminoimidazolinium cation, a di-arylmethylene core, a conformationally locked pyridin-2-yl-guanidine and a di-substituted guanidinium to achieve good α2-AR engagement. After different in vitro [35S]GTPγS binding experiments in human prefrontal cortex tissue, it was possible to identify that compounds 7a, 7b and 7c were α2-AR partial agonist, whereas 8h was a potent α2-AR antagonist. Docking and MD studies with a model of α2A-AR and two crystal structures suggest that antagonism is achieved by compounds carrying a di-substituted guanidine which substituent occupy a pocket adjacent to TM5 without engaging S2005.42 or S2045.46, and a mono-substituted cationic group, which favorably interacts with E942.65.
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Affiliation(s)
- Michela McMullan
- School of Chemistry, Trinity Biomedical Sciences Institute, Trinity College Dublin, 152-160, Pearse Street, Dublin 2, Ireland
| | - Brendan Kelly
- Department of Computer Science, Molecular and Cellular Physiology, Institute for Computational and Mathematical Engineering, Stanford University, Stanford, CA, 94305, USA; Department of Structural Biology, Institute for Computational and Mathematical Engineering, Stanford University, Stanford, CA, 94305, USA
| | - Helene B Mihigo
- School of Chemistry, Trinity Biomedical Sciences Institute, Trinity College Dublin, 152-160, Pearse Street, Dublin 2, Ireland
| | - Aaron P Keogh
- School of Chemistry, Trinity Biomedical Sciences Institute, Trinity College Dublin, 152-160, Pearse Street, Dublin 2, Ireland
| | - Fernando Rodriguez
- School of Chemistry, Trinity Biomedical Sciences Institute, Trinity College Dublin, 152-160, Pearse Street, Dublin 2, Ireland
| | - Iria Brocos-Mosquera
- Department of Pharmacology, University of the Basque Country, UPV/EHU, Leioa, Bizkaia, Spain; Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), Spain
| | - Aintzane García-Bea
- Department of Pharmacology, University of the Basque Country, UPV/EHU, Leioa, Bizkaia, Spain
| | | | - Luis F Callado
- Department of Pharmacology, University of the Basque Country, UPV/EHU, Leioa, Bizkaia, Spain; Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), Spain
| | - Isabel Rozas
- School of Chemistry, Trinity Biomedical Sciences Institute, Trinity College Dublin, 152-160, Pearse Street, Dublin 2, Ireland.
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Trujillo C, Flood A, Sánchez-Sanz G, Twamley B, Rozas I. Planarity or Nonplanarity: Modulating Guanidine Derivatives as α2-Adrenoceptors Ligands. J Chem Inf Model 2019; 59:2479-2486. [DOI: 10.1021/acs.jcim.9b00140] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Cristina Trujillo
- School of Chemistry, Trinity College Dublin, 152-160 Pearse Street, Dublin 2, Ireland
| | - Aoife Flood
- School of Chemistry, Trinity College Dublin, 152-160 Pearse Street, Dublin 2, Ireland
| | - Goar Sánchez-Sanz
- Irish Centre
of
High-End Computing, Grand Canal Quay, Dublin 2, Ireland
| | - Brendan Twamley
- School of Chemistry, Trinity College Dublin, 152-160 Pearse Street, Dublin 2, Ireland
| | - Isabel Rozas
- School of Chemistry, Trinity College Dublin, 152-160 Pearse Street, Dublin 2, Ireland
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Flood A, Trujillo C, Sanchez-Sanz G, Kelly B, Muguruza C, Callado LF, Rozas I. Thiophene/thiazole-benzene replacement on guanidine derivatives targeting α 2 -Adrenoceptors. Eur J Med Chem 2017. [DOI: 10.1016/j.ejmech.2017.06.008] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Substituted conformationally restricted guanidine derivatives: Probing the α2-adrenoceptors’ binding pocket. Eur J Med Chem 2016; 123:48-57. [DOI: 10.1016/j.ejmech.2016.07.011] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2016] [Revised: 07/04/2016] [Accepted: 07/07/2016] [Indexed: 11/21/2022]
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Borroto-Escuela DO, Tarakanov AO, Fuxe K. FGFR1-5-HT1A Heteroreceptor Complexes: Implications for Understanding and Treating Major Depression. Trends Neurosci 2015; 39:5-15. [PMID: 26687454 DOI: 10.1016/j.tins.2015.11.003] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2015] [Revised: 10/15/2015] [Accepted: 11/10/2015] [Indexed: 11/17/2022]
Abstract
The serotonin and neurotrophic factor hypotheses of depression are well known. The discovery of brain fibroblast growth factor receptor 1 (FGFR1)-5 hydroxytryptamine receptor 1A (5-HT1A) heteroreceptor complexes, and their enhancement of neuroplasticity, offers an integration of these hypotheses at the molecular level. They were first described in the hippocampus and later in midbrain 5-HT neurons, where these heterocomplexes are enriched in 5-HT1A autoreceptors. Combined FGF2 and 5-HT1A agonist treatment increased the formation of these heterocomplexes and the facilitatory allosteric receptor-receptor interactions within them led to the enhancement of FGFR1 signaling and was associated with the development of antidepressant effects. We discuss these findings with regard to a theory of motifs critically involved in these interactions and suggest that these complexes represent novel targets for antidepressants.
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Affiliation(s)
| | - Alexander O Tarakanov
- Russian Academy of Sciences, Saint Petersburg Institute for Informatics and Automation, Saint Petersburg, Russia
| | - Kjell Fuxe
- Department of Neuroscience, Karolinska Institutet, Retzius väg 8, 17177 Stockholm, Sweden.
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Kelly B, McMullan M, Muguruza C, Ortega JE, Meana JJ, Callado LF, Rozas I. α2-Adrenoceptor Antagonists: Synthesis, Pharmacological Evaluation, and Molecular Modeling Investigation of Pyridinoguanidine, Pyridino-2-aminoimidazoline and Their Derivatives. J Med Chem 2015; 58:963-77. [DOI: 10.1021/jm501635e] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Brendan Kelly
- School
of Chemistry, Trinity Biomedical Sciences Institute, Trinity College Dublin, 152-160 Pearse Street, Dublin 2, Ireland
| | - Michela McMullan
- School
of Chemistry, Trinity Biomedical Sciences Institute, Trinity College Dublin, 152-160 Pearse Street, Dublin 2, Ireland
| | - Carolina Muguruza
- Department of Pharmacology, University
of the Basque Country UPV/EHU, and Centro de Investigación
Biomédica en Red de Salud Mental, CIBERSAM, 28029 Madrid, Spain
| | - Jorge E. Ortega
- Department of Pharmacology, University
of the Basque Country UPV/EHU, and Centro de Investigación
Biomédica en Red de Salud Mental, CIBERSAM, 28029 Madrid, Spain
| | - J. Javier Meana
- Department of Pharmacology, University
of the Basque Country UPV/EHU, and Centro de Investigación
Biomédica en Red de Salud Mental, CIBERSAM, 28029 Madrid, Spain
| | - Luis F. Callado
- Department of Pharmacology, University
of the Basque Country UPV/EHU, and Centro de Investigación
Biomédica en Red de Salud Mental, CIBERSAM, 28029 Madrid, Spain
| | - Isabel Rozas
- School
of Chemistry, Trinity Biomedical Sciences Institute, Trinity College Dublin, 152-160 Pearse Street, Dublin 2, Ireland
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Shaw JW, Grayson DH, Rozas I. Synthesis of Guanidines and Some of Their Biological Applications. TOPICS IN HETEROCYCLIC CHEMISTRY 2015. [DOI: 10.1007/7081_2015_174] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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