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:
Sep. 10, 1991
Filed:
Jun. 20, 1990
Applicant:
Inventors:
John R Housley, Breaston, GB;
James E Jeffery, Chilwell, GB;
David N Johnston, Arnold, GB;
Bruce J Sargent, Carlton, GB;
Assignee:
The Boots Company Plc, Nottingham, GB;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61K / ; C07C / ;
U.S. Cl.
CPC ...
514650 ; 564368 ; 564337 ; 564338 ; 516209 ; 516236 ; 516240 ; 544 87 ; 544158 ; 544170 ; 544174 ; 5142318 ; 5142392 ; 5142388 ; 514320 ; 514317 ;
Abstract
Compounds of formula I ##STR1## and pharmaceutically acceptable salts thereof; in which R.sub.1 and R.sub.2, which are the same or different, are H or an optionally substituted hydrocarbon group or R.sub.1 and R.sub.2 together with the nitrogen atom to which they are attached form an optionally substituted heterocyclic ring;