作者:Adrian Hall、Andy Billinton、Alan K. Bristow、Susan H. Brown、Anita Chowdhury、Leanne Cutler、Gerard M.P. Giblin、Paul Goldsmith、Thomas G. Hayhow、Ian R. Kilford、Alan Naylor、Barry Passingham、D. Anthony Rawlings
DOI:10.1016/j.bmcl.2008.05.118
日期:2008.7
We describe the discovery of a series of pyrazole amide EP1 receptor antagonists with good aqueous solubility and CNS penetration. In order to achieve solubility we investigated the incorporation of a basic group in the region of the molecule previously occupied by a carboxylic acid, which was known to be a key element of the pharmacophore. This study led to the identification of compounds such as 4h, 4j and 10b which demonstrated brain-to-blood ratios of 0.8: 1-2.0: 1 in addition to good solubility and metabolic stability. (c) 2008 Elsevier Ltd. All rights reserved.