Design and Synthesis of 4-Substituted Benzamides as Potent, Selective, and Orally Bioavailable <i>I</i><sub>Ks</sub> Blockers
作者:John Lloyd、Joan B. Schmidt、George Rovnyak、Saleem Ahmad、Karnail S. Atwal、Sharon N. Bisaha、Lidia M. Doweyko、Philip D. Stein、Sarah C. Traeger、Arvind Mathur、Mary Lee Conder、John DiMarco、Timothy W. Harper、Tonya Jenkins-West、Paul C. Levesque、Diane E. Normandin、Anita D. Russell、Randolph P. Serafino、Mark A. Smith、Nicholas J. Lodge
DOI:10.1021/jm015505u
日期:2001.11.1
Multiple delayed rectifier potassium currents, including I-Ks are responsible for the repolarization and termination of the cardiac action potential, and blockers of these currents may be useful as antiarrhythmic agents. Modification of compound 5 produced 19(S) that is the most potent IF, blocker reported to date with > 5000-fold selectivity over other cardiac ion channels. Further modification produced 24A with 23% oral bioavailability.