The identification of substituted benzothiophene derivatives as PGE2 subtype 4 receptor antagonists: From acid to non-acid
作者:Lianhai Li、Marie-Claude Mathieu、Danielle Denis、Alex G. Therien、Zhaoyin Wang
DOI:10.1016/j.bmcl.2010.11.118
日期:2011.1
We disclose herein our preliminary SAR study on the identification of substituted benzothiophene derivatives as PGE(2) subtype 4 receptor antagonists. A potent EP4 antagonist 6a (K-i = 1.4 nM with 10% HSA) was identified. Furthermore, we found that an acidic group was not essential for the EP4 antagonizing activity in the series and neutral replacements were identified. This opens a new direction for future EP4 antagonist design. (C) 2010 Elsevier Ltd. All rights reserved.