Patent number: 6288068
Abstract: Di-N-substituted piperazine or 1,4 di-substituted piperadine compounds in accordance with formula I (including all isomers, salts, esters, and solvates)
wherein R, R1, R2, R3, R4, R21, R27, R28, X, Y, and Z are as defined herein are muscarinic antagonists useful for treating cognitive disorders such as Alheimer's disease. Pharmaceutical compositions and methods of preparation are also disclosed. Also disclosed are synergistic combinations of compounds of the above formula or other compounds capable of enhancing acetylcholine release with acetylcholinesterase inhibitors.
Type:
Grant
Filed:
January 12, 2000
Date of Patent:
September 11, 2001
Assignee:
Schering Corporation
Inventors:
Derek Lowe, Wei Chang, Joseph Kozlowski, Joel G. Berger, Robert McQuade, Allen Barnett, Margaret Sherlock, Wing Tom, Sundeep Dugar, Lian-Yong Chen, John W Clader, Samuel Chackalamannil, Wang Yuguang, Stuart W. McCombie, Javaram R. Tagat, Susan F. Vice, Wayne Vaccaro, Michael J. Green, Margaret E. Browne, Theodros Asberom