The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 28, 1995
Filed:
Jul. 08, 1988
Gregory M Shutske, Somerset, NJ (US);
Kevin J Kapples, Little York, NJ (US);
Hoechst-Roussel Pharmaceuticals Inc., Somerville, NJ (US);
Abstract
There are disclosed compounds having the formula ##STR1## wherein R is hydrogen, loweralkyl or loweralkylcarbonyl; R.sub.1 is hydrogen, loweralkyl, loweralkylcarbonyl, aryl, diloweralkylaminoloweralkyl, arylloweralkyl, diarylloweralkyl, oxygen-bridged arylloweralkyl or oxygen-bridged diarylloweralkyl; R.sub.2 and R.sub.3 are independently H or CH.sub.3 ; X is hydrogen, loweralkyl, cycloalkyl, loweralkoxy, halogen, hydroxy, nitro, trifluoromethyl, formyl, loweralkylcarbonyl, arylcarbonyl, --SH, loweralkylthio, --NHCOR.sub.4 or --NR.sub.5 R.sub.6 where R.sub.4 is hydrogen or loweralkyl, and R.sub.5 and R.sub.6 are independently hydrogen, loweralkyl or cycloalkyl; Y and Z are independently a direct bond, CR.sub.7 R.sub.8 or CR.sub.7 R.sub.8 --CR.sub.9 R.sub.10 ; and L and Q are independently CR'.sub.7 R'.sub.8, CR'.sub.7 R'.sub.8 --CR'.sub.9 R'.sub.10, CR'.sub.7 .dbd.CR'.sub.9 or CR'.sub.7 R'.sub.8 --CR'.sub.9 R'.sub.10 --CR.sub.11 R.sub.12, where each of R.sub.7 through R.sub.12 and R'.sub.7 through R'.sub.10 is independently H or CH.sub.3 ; a stereo, optical and geometrical isomers thereof, and pharmaceutically acceptable acid addition salts thereof, which are useful for enhancing memory.