Design, Synthesis, and Evaluation of Conformationally Restricted Acetanilides as Potent and Selective β3Adrenergic Receptor Agonists for the Treatment of Overactive Bladder
摘要:
A series of conformationally restricted acetanilides were synthesized and evaluated as beta(3)-adrenergic receptor agonists (beta(3)-AR) for the treatment of overactive bladder (OAB). Optimization studies identified a five-membered ring as the preferred conformational lock of the acetanilide. Further optimization of both the aromatic and thiazole regions led to compounds such as 19 and 29, which have a good balance of potency and selectivity. These compounds have significantly reduced intrinsic clearance compared to our initial series of pyridylethanolamine beta(3)-AR agonists and thus have improved unbound drug exposures. Both analogues demonstrated dose dependent beta(3)-AR mediated responses in a rat bladder hyperactivity model.
Asymmetric Hydrogenation of Trisubstituted Olefins with Iridium−Phosphine Thiazole Complexes: A Further Investigation of the Ligand Structure
作者:Christian Hedberg、Klas Källström、Peter Brandt、Lars Kristian Hansen、Pher G. Andersson
DOI:10.1021/ja057178b
日期:2006.3.1
prepared and successfully applied as ligands in the homogeneous iridium-catalyzed asymmetrichydrogenation of aryl alkenes and aryl alkene esters. The ligands are designed to be highlymodular and have one common chiral intermediate, from which diversity can be introduced at a late stage in the synthetic pathway. It was found that a six-member-ring backbone of the rigid ligand structure was preferred over