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Bioorg Med Chem Lett. 2006 Jun 1;16(11):3043-8. Epub 2006 Mar 10.

Identification of an indole series of prostaglandin D2 receptor antagonists.

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Department of Medicinal Chemistry, Merck Frosst Canada & Co., 16711 Trans Canada Hwy. Kirkland, Que., Canada H9H 3L1.


A novel indole series of PGD2 receptor (DP receptor) antagonists is presented. Optimization of this series led to the identification of potent and selective DP receptor antagonists. In particular, antagonists 35 and 36 were identified with Ki values of 2.6 and 1.8 nM, respectively. These two antagonists are also potent in a DP functional assay where they inhibit the PGD2 induced cAMP production in platelet rich plasma with IC50 values of 7.9 and 8.6 nM, respectively. The structure-activity relationships of this indole series of DP receptor antagonists will also be discussed.

[Indexed for MEDLINE]

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