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. 25, 1986
Filed:
Oct. 22, 1984
Applicant:
Inventors:
Roger E Markwell, Great Dunmow, GB;
Stephen A Smith, Bishops Stortford, GB;
Assignee:
Beecham Group p.l.c., Middlesex, GB;
Primary Examiner:
Int. Cl.
CPC ...
A61K / ; C07D / ; C07D / ;
U.S. Cl.
CPC ...
514310 ; 514291 ; 514309 ; 546 90 ; 546 80 ; 546 89 ; 546 79 ; 546141 ; 546143 ;
Abstract
A compound of formula (I) or a pharmaceutically acceptable salt thereof: ##STR1## wherein: R.sub.1 and R.sub.2 are independently hydrogen, C.sub.1-6 alkyl or together are a group X which is C.sub.3-6 polymethylene optionally interrupted by O, S or NR.sub.6 wherein R.sub.6 is hydrogen or C.sub.1-6 alkyl;