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:
Feb. 26, 1991
Filed:
Aug. 12, 1988
Raymond Baker, Much Hadham, GB;
Paul D Leeson, Cambridge, GB;
Susan F Britcher, Norristown, PA (US);
Merck Sharp & Dohme Ltd., Hoddesdon, GB;
Abstract
The present invention provides a compound of formula (I): ##STR1## or a pharmaceutically acceptable salt thereof, wherein one of R.sup.1, R.sup.2, R.sup.3 and R.sup.4 represents a hydrocarbon or hydrocarbyloxycarbonyl group and the remaining groups R.sup.1, R.sup.2, R.sup.3 and R.sup.4 independently represent hydrogen, hydrocarbon, hydrocarbyloxycarbonyl, halogen, hydroxy or C.sub.1-6 alkoxy, or R.sup.1 and R.sup.2 or R.sup.3 and R.sup.4 may together represent the residue of a carbocyclic ring; R.sup.5 and R.sup.6 independently represent hydrogen, hydrocarbon, hydroxy or fluoro; R.sup.7 represents hydrogen or C.sub.1-3 alkyl; and R.sup.8 represents methyl or ethyl; which compounds are useful as anticonvulsant agents and in the treatment of neurodegenerative diseases.