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:
Aug. 06, 1991
Filed:
Jun. 06, 1990
Gisbert Sponer, Laudenbach, DE;
Harald D Borbe-Volmer, Mainz, DE;
Jurgen Engel, Alzenau, DE;
Bernhard Kutscher, Maintal, DE;
Georg Niebch, Rodenbach, DE;
Marianne Siebert-Weigel, Frankfurt, DE;
Boehringer Mannheim GmbH, Mannheim, DE;
Abstract
The present invention provides compounds of the general formula: ##STR1## wherein R.sub.1 is a hydroxyl group or a methoxy radical, R.sub.2 is a hydrogen atom or a hyroxyl group and R.sub.3 is a hydrogen atom or a hydroxyl group, with the proviso that R.sub.2 and R.sub.3 are not simultaneously hydrogen atoms when R.sub.1 is a methoxy radical; and the pharmacologically acceptable salts thereof. The present invention also provides processes for the preparation of these compounds and pharmaceutical compositions containing them.