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Tropmann K, Bresinsky M, Forster L, Mönnich D, Buschauer A, Wittmann HJ, Hübner H, Gmeiner P, Pockes S, Strasser A. Abolishing Dopamine D 2long/D 3 Receptor Affinity of Subtype-Selective Carbamoylguanidine-Type Histamine H 2 Receptor Agonists. J Med Chem 2021; 64:8684-8709. [PMID: 34110814 DOI: 10.1021/acs.jmedchem.1c00692] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
3-(2-Amino-4-methylthiazol-5-yl)propyl-substituted carbamoylguanidines are potent, subtype-selective histamine H2 receptor (H2R) agonists, but their applicability as pharmacological tools to elucidate the largely unknown H2R functions in the central nervous system (CNS) is compromised by their concomitant high affinity toward dopamine D2-like receptors (especially to the D3R). To improve the selectivity, a series of novel carbamoylguanidine-type ligands containing various heterocycles, spacers, and side residues were rationally designed, synthesized, and tested in binding and/or functional assays at H1-4 and D2long/3 receptors. This study revealed a couple of selective candidates (among others 31 and 47), and the most promising ones were screened at several off-target receptors, showing good selectivities. Docking studies suggest that the amino acid residues (3.28, 3.32, E2.49, E2.51, 5.42, and 7.35) are responsible for the different affinities at the H2- and D2long/3-receptors. These results provide a solid base for the exploration of the H2R functions in the brain in further studies.
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Affiliation(s)
- Katharina Tropmann
- Institute of Pharmacy, University of Regensburg, Universitätsstraße 31, D-93053 Regensburg, Germany
| | - Merlin Bresinsky
- Institute of Pharmacy, University of Regensburg, Universitätsstraße 31, D-93053 Regensburg, Germany
| | - Lisa Forster
- Institute of Pharmacy, University of Regensburg, Universitätsstraße 31, D-93053 Regensburg, Germany
| | - Denise Mönnich
- Institute of Pharmacy, University of Regensburg, Universitätsstraße 31, D-93053 Regensburg, Germany
| | - Armin Buschauer
- Institute of Pharmacy, University of Regensburg, Universitätsstraße 31, D-93053 Regensburg, Germany
| | - Hans-Joachim Wittmann
- Institute of Pharmacy, University of Regensburg, Universitätsstraße 31, D-93053 Regensburg, Germany
| | - Harald Hübner
- Department of Chemistry and Pharmacy, Medicinal Chemistry, Friedrich-Alexander-University of Erlangen-Nürnberg, 91058 Erlangen, Germany
| | - Peter Gmeiner
- Department of Chemistry and Pharmacy, Medicinal Chemistry, Friedrich-Alexander-University of Erlangen-Nürnberg, 91058 Erlangen, Germany
| | - Steffen Pockes
- Institute of Pharmacy, University of Regensburg, Universitätsstraße 31, D-93053 Regensburg, Germany.,Department of Neurology, University of Minnesota, Minneapolis, Minnesota 55455, United States.,Department of Medicinal Chemistry, Institute for Therapeutics Discovery and Development, University of Minnesota, Minneapolis, Minnesota 55414, United States
| | - Andrea Strasser
- Institute of Pharmacy, University of Regensburg, Universitätsstraße 31, D-93053 Regensburg, Germany
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Soliman B, Wang N, Zagotto G, Pockes S. Synthesis and biological evaluation of heteroalicyclic cyanoguanidines at histamine receptors. Arch Pharm (Weinheim) 2019; 352:e1900107. [DOI: 10.1002/ardp.201900107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2019] [Revised: 05/03/2019] [Accepted: 05/22/2019] [Indexed: 11/12/2022]
Affiliation(s)
- Beatrice Soliman
- Institute of PharmacyUniversity of Regensburg Regensburg Germany
- Department of Pharmaceutical and Pharmacological SciencesUniversity of Padua Padua Italy
| | - Ning Wang
- Institute of PharmacyUniversity of Regensburg Regensburg Germany
| | - Giuseppe Zagotto
- Department of Pharmaceutical and Pharmacological SciencesUniversity of Padua Padua Italy
| | - Steffen Pockes
- Institute of PharmacyUniversity of Regensburg Regensburg Germany
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Abstract
AIM The similarity in the biological function of the bioisosteric pair, carboxyl and sulfonamide functional groups, is studied using the quantitative tool, average electron density of the bioisosteric moiety in drug molecules and the qualitative tool, electrostatic potential. Results/methodology: Five different capping groups (methyl, phenyl, chlorine, hydrogen and amine) were considered to investigate the effect of the environment on the properties of the bioisosteres. The molecules were considered in their neutral and anionic forms to account for the change in pH depending on the medium of the drug-receptor interactions. CONCLUSION The new developed approach, average electron density, is not only advantageous as a qualitative descriptor, it is also more consistent compared with the conventionally accepted method, electrostatic potential, especially for the anions.
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Levoin N, Labeeuw O, Billot X, Calmels T, Danvy D, Krief S, Berrebi-Bertrand I, Lecomte JM, Schwartz JC, Capet M. Discovery of nanomolar ligands with novel scaffolds for the histamine H4 receptor by virtual screening. Eur J Med Chem 2016; 125:565-572. [PMID: 27718472 DOI: 10.1016/j.ejmech.2016.09.074] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2016] [Revised: 09/21/2016] [Accepted: 09/22/2016] [Indexed: 12/29/2022]
Abstract
The involvement of histamine H4 receptor (H4R) in immune cells chemotaxis and mediator release makes it an attractive target for the treatment of inflammation disorders. A decade of medicinal chemistry efforts has led to several promising ligands, although the chemical structures described so far possesses a singular limited diversity. We report here the discovery of novel structures, belonging to completely different scaffolds. The virtual screening was planed as a two-steps process. First, using a "scout screening" methodology, we have experimentally probed the H4R ligand binding site using a small size chemical library with very diverse structures, and identified a hit that further assist us in refining a raw 3D homology model. Second, the refined 3D model was used to conduct a widened virtual screening. This two-steps strategy proved to be very successful, both in terms of structural diversity and hit rate (23%). Moreover, the hits have high affinity for the H4R, with most potent ligands in the nanomolar range.
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Affiliation(s)
- Nicolas Levoin
- Bioprojet-Biotech, 4rue du Chesnay Beauregard, 35762 Saint-Gregoire Cedex, France.
| | - Olivier Labeeuw
- Bioprojet-Biotech, 4rue du Chesnay Beauregard, 35762 Saint-Gregoire Cedex, France
| | - Xavier Billot
- Bioprojet-Biotech, 4rue du Chesnay Beauregard, 35762 Saint-Gregoire Cedex, France
| | - Thierry Calmels
- Bioprojet-Biotech, 4rue du Chesnay Beauregard, 35762 Saint-Gregoire Cedex, France
| | - Denis Danvy
- Bioprojet-Biotech, 4rue du Chesnay Beauregard, 35762 Saint-Gregoire Cedex, France
| | - Stéphane Krief
- Bioprojet-Biotech, 4rue du Chesnay Beauregard, 35762 Saint-Gregoire Cedex, France
| | | | - Jeanne-Marie Lecomte
- Bioprojet-Biotech, 4rue du Chesnay Beauregard, 35762 Saint-Gregoire Cedex, France
| | | | - Marc Capet
- Bioprojet-Biotech, 4rue du Chesnay Beauregard, 35762 Saint-Gregoire Cedex, France
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5
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Electrostatic potentials and average electron densities of bioisosteres in methylsquarate and acetic acid. Future Med Chem 2016; 8:361-71. [DOI: 10.4155/fmc.16.2] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Background: The bioisosterism in −CO2H and −C4HO3 is exploited using the quantum theory of atoms in molecules and molecular electrostatic potentials (ESP). Results & discussion: Bioisosteres in methylsquarate and acetic acid, in the neutral/anionic forms, have average electron densities that differ by less than 2% (i.e., ∼0.01 atomic units) while irrespective of the capping group. The topography of the ESP reveals similarities in the case of the neutral species but not in the anionic forms. Conclusion: The nonclassical bioisosteres in methylsquarate and acetic acid have average electron densities that are similar and relatively insensitive to the ionization state (neutral or anionic) or its studied capping group (H, CH3, Cl or phenyl). The ESP reveals similarities in the topography of neutral molecules.
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Berlinck RGS, Romminger S. The chemistry and biology of guanidine natural products. Nat Prod Rep 2016; 33:456-90. [DOI: 10.1039/c5np00108k] [Citation(s) in RCA: 75] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
The present review discusses the isolation, structure determination, synthesis, biosynthesis and biological activities of secondary metabolites bearing a guanidine group.
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Affiliation(s)
| | - Stelamar Romminger
- Instituto de Química de São Carlos
- Universidade de São Paulo
- São Carlos
- Brazil
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Corrêa MF, dos Santos Fernandes JP. Histamine H4 receptor ligands: future applications and state of art. Chem Biol Drug Des 2014; 85:461-80. [PMID: 25228262 DOI: 10.1111/cbdd.12431] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Histamine is a chemical transmitter found practically in whole organism and exerts its effects through the interaction with H1 to H4 histaminergic receptors. Specifically, H4 receptors are found mainly in immune cells and blood-forming tissues, thus are involved in inflammatory and immune processes, as well as some actions in central nervous system. Therefore, H4 receptor ligands can have applications in the treatment of chronic inflammatory and immune diseases and may be novel therapeutic option in these conditions. Several H4 receptor ligands have been described from early 2000's until nowadays, being imidazole, indolecarboxamide, 2-aminopyrimidine, quinazoline, and quinoxaline scaffolds the most explored and discussed in this review. Moreover, several studies of molecular modeling using homology models of H4 receptor and QSAR data of the ligands are summarized. The increasing and promising therapeutic applications are leading these compounds to clinical trials, which probably will be part of the next generation of blockbuster drugs.
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Affiliation(s)
- Michelle Fidelis Corrêa
- Departamento de Ciências Exatas e da Terra, Instituto de Ciências Ambientais, Químicas e Farmacêuticas, UNIFESP, Diadema, Brazil
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Baumeister P, Erdmann D, Biselli S, Kagermeier N, Elz S, Bernhardt G, Buschauer A. [(3) H]UR-DE257: development of a tritium-labeled squaramide-type selective histamine H2 receptor antagonist. ChemMedChem 2014; 10:83-93. [PMID: 25320025 DOI: 10.1002/cmdc.201402344] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2014] [Indexed: 11/08/2022]
Abstract
A series of new piperidinomethylphenoxypropylamine-type histamine H2 receptor (H2 R) antagonists with different substituted "urea equivalents" was synthesized and characterized in functional in vitro assays. Based on these data as selection criteria, radiosynthesis of N-[6-(3,4-dioxo-2-{3-[3-(piperidin-1-ylmethyl)phenoxy]propylamino}cyclobut-1-enylamino)hexyl]-(2,3-(3) H2 )propionic amide ([(3) H]UR-DE257) was performed. The radioligand (specific activity: 63 Ci mmol(-1) ) had high affinity for human, rat, and guinea pig H2 R (hH2 R, Sf9 cells: Kd , saturation binding: 31 nM, kinetic studies: 20 nM). UR-DE257 revealed high H2 R selectivity on membranes of Sf9 cells, expressing the respective hHx R subtype (Ki values: hH1 R: >10000 nM, hH2 R: 28 nM, hH3 R: 3800 nM, hH4 R: >10000 nM). In spite of insurmountable antagonism, probably due to rebinding of [(3) H]UR-DE257 to the H2 R (extended residence time), the title compound proved to be a valuable pharmacological tool for the determination of H2 R affinities in competition binding assays.
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Affiliation(s)
- Paul Baumeister
- Institut für Pharmazie, Pharmazeutische/Medizinische Chemie, Universität Regensburg, Universitätsstr. 31, 93053 Regensburg (Germany)
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