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:
Jun. 04, 2013
Filed:
Nov. 23, 2007
Applicants:
Andreas Koch, Linz, AT;
Erwin Neufellner, Linz, AT;
Inventors:
Andreas Koch, Linz, AT;
Erwin Neufellner, Linz, AT;
Assignee:
Cyathus Exquirere Pharmaforschungs GmbH, Vienna, AT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D 241/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method for preparing compounds of the formula (I) by the cyclization of tetraacetic acid alkyl esters of the formula (II) in the presence of ammonia and formamide as well as to the compounds of the formula (II), which are used in this method.