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:
Apr. 18, 2000
Filed:
Aug. 13, 1998
Applicant:
Inventors:
Reiner Fischer, Monheim, DE;
Thomas Bretschneider, Lohmar, DE;
Gunther Beck, Leverkusen, DE;
Hermann Hagemann, Leverkusen, DE;
Christoph Erdelen, Leichlingen, DE;
Ulrike Wachendorff-Neumann, Neuwied, DE;
Wolfram Andersch, Bergisch Gladbach, DE;
Norbert Mencke, Leverkusen, DE;
Andreas Turberg, Erkrath, DE;
Assignee:
Bayer Aktiengesellschaft, Leverkusen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ; C07D / ;
U.S. Cl.
CPC ...
549420 ; 549 28 ; 549475 ; 546227 ; 548531 ;
Abstract
The present invention relates to new 3-aryl-4-hydroxy-.DELTA..sup.3 -dihydrofuranone derivatives of the formula (I) ##STR1## in which A and B together with the carbon atom to which they are bonded form an unsubstituted or substituted 5- to 7-membered ring which is interrupted by at least one hetero atom,