摘要:
A novel indole series of PGD(2) 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 K-i values of 2.6 and 1.8 nM, respectively. These two antagonists are also potent in a DIP functional assay where they inhibit the PGD(2) induced cAMP production in platelet rich plasma with IC50 values of 7.9 and 8.6 W, respectively. The structure-activity relationships of this indole series of DP receptor antagonists will also be discussed. (c) 2006 Elsevier Ltd. All rights reserved.