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:
May. 12, 1992
Filed:
Aug. 08, 1990
Applicant:
Inventors:
Assignee:
John Wyeth & Brother Limited, Maidenhead, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61K / ; C07D / ; C07D / ;
U.S. Cl.
CPC ...
514299 ; 514307 ; 514311 ; 514312 ; 514314 ; 544333 ; 546112 ; 546146 ; 546148 ; 546152 ; 546153 ; 546155 ; 546156 ; 546168 ; 546170 ; 546173 ; 546174 ; 546176 ; 546178 ; 546180 ; 546183 ;
Abstract
The invention concerns compounds of formula I ##STR1## or a salt thereof, wherein R.sup.1 and R.sup.2 each independently represent hydrogen, lower alkyl, lower alkoxy, carboxyloweralkyl, carboxy, hydroxyloweralkyl, halogen, haloloweralkyl, lower alkoxycarbonyl, optionally substituted aryl or optionally substituted aralkyl, n represents an integer from 3 to 6; R.sup.3 represents hydrogen or single or multiple substitution on one or more of the aliphatic carbons by one or more substituents selected from lower alkyl, optionally substituted aryl and optionally substituted aralkyl; A represents a group of formula (i) or (ii) below: