Optimization of ADME Properties for Sulfonamides Leading to the Discovery of a T-Type Calcium Channel Blocker, ABT-639
作者:Qingwei Zhang、Zhiren Xia、Shailen Joshi、Victoria E. Scott、Michael F. Jarvis
DOI:10.1021/acsmedchemlett.5b00023
日期:2015.6.11
The discovery of a novel peripherally acting and selective Ca(v)3.2 T-type calcium channel blocker, ABT-639, is described. HTS hits 1 and 2, which have poor metabolic stability, were optimized to obtain 4, which has improved stability and oral bioavailability. Modification of 4 to further improve ADME properties led to the discovery of ABT-639. Following oral administration, ABT-639 produces robust antinociceptive activity in experimental pain models at doses that do not significantly alter psychomotor or hemodynamic function in the rat.