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J Med Chem. 2009 Feb 26;52(4):926-31. doi: 10.1021/jm8014052.

A series of 2,4-disubstituted quinolines as a new class of allosteric enhancers of the adenosine A3 receptor.

Author information

1
Division of Medicinal Chemistry, Leiden/Amsterdam Center for Drug Research, Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands.

Abstract

The adenosine receptor subfamily consists of the adenosine A(1), A(2A), A(2B), and A(3) receptors, which are localized in a variety of tissues throughout the human body. It is, therefore, a challenge to develop receptor specific ligands with improved tissue selectivity. Allosteric modulators could have these therapeutic advantages over orthosteric ligands. In the present study, a series of 2,4-disubstituted quinolines were synthesized on the basis of the structure of LUF6000 (34). Compound 27 (LUF6096) was able to allosterically enhance agonist binding to a similar extent as 34. In addition, this new compound showed low, if any, orthosteric affinity for any of the adenosine receptors. In a functional assay, compound 27 showed improved activity in comparison to 34, as it increased both the intrinsic efficacy and the potency of the reference agonist Cl-IB-MECA at the human adenosine A(3) receptor.

PMID:
19161279
DOI:
10.1021/jm8014052
[Indexed for MEDLINE]

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