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:
Apr. 24, 1990
Filed:
Nov. 24, 1987
Hoffmann-La Roche Inc., Nutley, NJ (US);
Abstract
Compounds of the formula ##STR1## wherein A represents a grouping of the formula ##STR2## in which R.sup.1 and R.sup.2 each individually represent hydrogen, halogen, trifluoromethyl, nitro, amino, cyano, C.sub.1 -C.sub.6 -alkyl, C.sub.1 -C.sub.6 -alkoxy, C.sub.3 -C.sub.6 -alkenyloxy, C.sub.1 -C.sub.6 -alkylthio, C.sub.1 14 C.sub.6 -alkanoylamino, aryloxy, aryl-(C.sub.1 -C.sub.6 -alkyl), aryl-(C.sub.1 -C.sub.6 -alkoxy), aryl-(C.sub.1 -C.sub.6 -alkoxy)carbonylamino or a group of the formula --O--CH.sub.2 --R.sup.3 or R.sup.1 and R.sup.2 on adjacent carbon atoms together represent a group of the formula --CH.dbd.CH--CH.dbd.CH-- or --CH.sub.2 --CH.sub.2 --O-- and R.sup.3 represents hydroxy-(C.sub.1 -C.sub.4 -alkyl) or vicinal dihydroxy-(C.sub.2 -C.sub.5 -alkyl), and pharmaceutically acceptable acid addition salts of those compounds of formula I in which R.sup.1 and/or R.sup.2 represents amino, possess xanthine oxidase inhibiting activity and can be used as medicaments, particularly for the control or prevention of ischemia or gout. These compounds can be manufactured according to known methods.