Abstract
A series of novel β2-adrenoceptor agonists with a 5-(2-amino-1-hydroxyethyl)-8-hydroxyquinolin-2(1H)-one moiety was designed, synthesized and evaluated for biological activity in human embryonic kidney 293 cells and isolated guinea pig trachea. Compounds 9g and (R)-18c exhibited the most excellent β2-adrenoceptor agonistic effects and high β2/β1-selectivity with EC50 values of 36 pM for 9g and 21 pM for (R)-18c. They produced potent airway smooth muscle relaxant effects with fast onset of action and long duration of action in an in vitro guinea pig trachea model of bronchodilation. These results support further development of the two compounds into drug candidates.
Keywords:
Asthma; COPD; Indacaterol; Salmeterol; Trantinterol; β(2)-Adrenoceptor agonist.
Copyright © 2018. Published by Elsevier Ltd.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Adrenergic beta-2 Receptor Agonists / chemical synthesis
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Adrenergic beta-2 Receptor Agonists / metabolism
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Adrenergic beta-2 Receptor Agonists / pharmacology*
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Animals
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Binding Sites
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Bronchodilator Agents / chemical synthesis
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Bronchodilator Agents / metabolism
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Bronchodilator Agents / pharmacology*
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Drug Design
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Ethanolamines / chemical synthesis
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Ethanolamines / metabolism
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Ethanolamines / pharmacology*
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Guinea Pigs
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HEK293 Cells
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Humans
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Hydroxyquinolines / chemical synthesis
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Hydroxyquinolines / metabolism
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Hydroxyquinolines / pharmacology*
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Male
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Molecular Docking Simulation
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Receptors, Adrenergic, beta-2 / chemistry
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Receptors, Adrenergic, beta-2 / metabolism
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Trachea / drug effects
Substances
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Adrenergic beta-2 Receptor Agonists
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Bronchodilator Agents
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Ethanolamines
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Hydroxyquinolines
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Receptors, Adrenergic, beta-2