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. 21, 1999
Filed:
Aug. 28, 1997
Applicant:
Inventors:
Assignee:
Astra Pharmaceuticals Limited, London, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61K / ;
U.S. Cl.
CPC ...
514 47 ; 536 2626 ;
Abstract
There are disclosed compounds of formula I, ##STR1## wherein R.sup.1 and R.sup.2 independently represent hydrogen or halogen, R.sup.3 and R.sup.4 independently represent phenyl, or alkyl C.sub.1-6 optionally substituted by one or more substituents selected from OR.sup.5, alkylthio C.sub.1-6, NR.sup.6 R.sup.7, phenyl, COOR.sup.8 and halogen,