Synthesis and evaluation of tetrahydropyrazolopyridine inhibitors of anion exchange protein SLC26A4 (pendrin)

[Display omitted] Pendrin is a transmembrane chloride/anion antiporter that is strongly upregulated in the airways in rhinoviral infection, asthma, cystic fibrosis and chronic rhinosinusitis. Based on its role in the regulation of airway surface liquid depth, pendrin inhibitors have potential indica...

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Bibliographic Details
Published in:Bioorganic & medicinal chemistry letters 2019-08, Vol.29 (16), p.2119-2123
Main Authors: Zhu, Jie S., Lu, Julia Y., Tan, Joseph-Anthony, Rivera, Amber A., Phuan, Puay-Wah, Shatskikh, Marina E., Son, Jung-Ho, Haggie, Peter M., Verkman, Alan S., Kurth, Mark J.
Format: Article
Language:English
Subjects:
Anion transporter
Pendrin
Pyrazole
Regioselectivity
SLC26A4
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Summary:[Display omitted] Pendrin is a transmembrane chloride/anion antiporter that is strongly upregulated in the airways in rhinoviral infection, asthma, cystic fibrosis and chronic rhinosinusitis. Based on its role in the regulation of airway surface liquid depth, pendrin inhibitors have potential indications for treatment of inflammatory airways diseases. Here, a completely regioselective route to tetrahydro-pyrazolopyridine pendrin inhibitors based on 1,3-diketone and substituted hydrazine condensation was been developed. Structure-activity relationships at the tetrahydropyridyl nitrogen were investigated using a focused library, establishing the privileged nature of N-phenyl ureas and improving inhibitor potency by greater than 2-fold.
ISSN:0960-894X
1464-3405
DOI:10.1016/j.bmcl.2019.07.003