Patent number: 5889006
Abstract: Di-N-substituted piperazine or 1,4 di-substituted piperadine compounds in accordance with formula I (including all isomers, salts, esters, and solvates) ##STR1## wherein R, R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.21, R.sup.27, R.sup.28, X, Y, and Z are as defined herein are muscarinic antagonists useful for treating cognitive disorders such as Alzheimer's disease. Pharmaceutical compositions and methods of preparation are also disclosed. Also disclosed are synergistic combinations of compounds of the above formula with acetylcholinesterase inhibitors.
Type:
Grant
Filed:
August 8, 1996
Date of Patent:
March 30, 1999
Assignee:
Schering Corporation
Inventors:
Derek B. Lowe, Wei K. Chang, Joseph A. Kozlowski, Joel G. Berger, Robert McQuade, Allen Barnett, Margaret Sherlock, Wing Tom, Sundeep Dugar, Lian-Yong Chen, John W. Clader, Samuel Chackalamannil, Yuguang Wang, Stuart W. McCombie, Jayaram R. Tagat, Susan F. Vice, Wayne Vaccaro, Michael J. Green, Margaret E. Browne, Theodros Asberom, Craig D. Boyle
Patent number: 5750532
Abstract: The disclosed invention is compounds represented by the formula ##STR1## and pharmacetically acceptable acid salts thereof, wherein each Z is independently tetiary butyl, phenyl, naphthyl or adamantyl; substituted phenyl, wherein the substituents are one or more of halogen, lower alkoxy, phenoxy, nitrile, nitro, phenylsulfonyl, loweralkyl-sulfonyl, oxazol-2-yl, lower alkanoyl, benzoyl, lower alkoxycarbonyl, lower alkyl, lower alkylthio, phenyl, phenylaminothiocarbonyl, or lower alkylaminothiocarbonyl, hydroxyiminoloweralkyl hydroxyloweralkyl or carbonyl; or 4 or 6 membered unsubstituted or substituted heterocyclic ring containing at least one nitrogen with the remaining member of the ring being at least one carbon, and optionally sulfur or oxygen,X and Y are each independently a bond, ##STR2## each Q is independently a divalent substituted or unsubstituted, straight or branched chain lower alkanediyl, lower alkanediyl-cycloalkanediyl-lower alkanediyl, lower alkenediyl, lower alkynediyl, phenylene, dihydrofura
Type:
Grant
Filed:
May 30, 1995
Date of Patent:
May 12, 1998
Assignee:
Schering Corporation
Inventors:
Viyyoor M. Girijavallabhan, Ashit K. Ganguly, Patrick A. Pinto, Richard W. Versace