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. 20, 1990
Filed:
Apr. 20, 1988
Applicant:
Inventors:
Christian Rietzel, Heidelberg, DE;
Heinrich Knauf, Freiburg-Wittnau, DE;
Ernst Mutschler, Mainz-Hechtsheim, DE;
Karl-Dieter Voelger, Bickenbach, DE;
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61K / ; C07D / ;
U.S. Cl.
CPC ...
514258 ; 544260 ; 544118 ; 5142342 ;
Abstract
Pteridine compounds, useful as diuretics, of the formula ##STR1## wherein R.sub.1 and R.sub.2 taken alone are, independently of each other, hydrogen, alkyl having from 1 to 6 carbon atoms, or benzyl, or wherein R.sub.1 and R.sub.2, taken together with the nitrogen atom to which they are bound, form a five- or six-membered heterocyclic ring system or such a ring containing one or two further hetero atoms, or wherein R.sub.1 and R.sub.2 together with the nitrogen are ##STR2##