4-(pyridyl)- and 4-(oxo-pyridyl)-1,3-benzoxazines

US5036068A · kind A · utility

Assignee

• Merck Patent GmbH · DE

Inventors

• Manfred Baumgarth
• Rolf Gericke · Seeheim-Jugenheim, DE
• Rolf Bergmann
• Jacques De Peyer · Darmstadt, DE
• Ingeborg Lues · Darmstadt, DE

Key dates

• Filing date: Nov 22, 1989
• Grant date: Jul 30, 1991
• Expiry date: Nov 22, 2009

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07D413/12
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Novel benzoxazine derivatives of the formula I ##STR1## wherein R.sup.1 to R.sup.5 have the meanings defined herein, and salts thereof, exhibit effects on the cardiovascular system.