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. 13, 1984
Filed:
Mar. 31, 1983
Rodney I Fryer, North Caldwell, NJ (US);
Eugene J Trybulski, Parsippany, NJ (US);
Armin Walser, West Caldwell, NJ (US);
Hoffmann-La Roche Inc., Nutley, NJ (US);
Abstract
The present invention relates to compounds of the formula ##STR1## wherein R.sub.1 and R.sub.3 are selected from the group consisting of hydrogen, lower alkyl, hydroxy, lower alkoxy or acyloxy and R.sub.2 and R.sub.4 are hydrogen or R.sub.1 and R.sub.2 and/or R.sub.3 and R.sub.4 taken together are oxo groups with the proviso that at least one oxo group is present; R is selected from the group consisting of hydrogen, lower alkyl, C.sub.2 to C.sub.7 carboxylic acids and the esters and amides thereof, hydroxy C.sub.2 to C.sub.7 alkyl and amino C.sub.2 to C.sub.7 alkyl or mono- or di-lower alkyl amino C.sub.2 to C.sub.7 alkyl; R.sub.5 is halogen or hydrogen; and R.sub.6 is halogen with the proviso that when R.sub.1 or R.sub.3 is hydroxy, lower alkoxy or acyloxy, then R is lower alkyl or hydrogen and the N-oxides and the pharmaceutically acceptable salts thereof.