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:
Dec. 21, 1976
Filed:
Apr. 16, 1975
Hans Kuhnis, Basel, C;
Christian Egli, Magden, C;
Kurt Eichenberger, Therwil, C;
Phyllis Roberta Hedwall, Basel, C;
Ciba-Geigy Corporation, Ardsley, NY (US);
Abstract
Pyridines of the formula I ##STR1## wherein R.sub.1 is free hydroxyl, lower alkoxy, cycloalkoxy, amino-lower alkoxy or lower alkoxy-lower alkoxy, free amino, hydroxyamino, lower alkyleneamino, oxa-, aza- or thia-lower alkyleneamino or mono- or di-lower alkylamino, R.sub.2 is oxygen or sulphur, R.sub.3 and R.sub.4 are each alkoxy, free amino, mono- or di-lower alkylamino, lower alkyleneamino, oxa-, aza- or thia-lower alkyleneamino, halogen or free hydroxyl, and either R.sub.3 or R.sub.4 can be hydrogen, and alk is an alkyl group with 3-10 carbon atoms, and their N-oxides, and salts are useful as dopamine-.beta.-hydroxylase inhibitors.