Tetracyclic quinazoline derivatives, effective as antiarrythmic agents

US5214047A · kind A · utility

Assignee

• BASF SE

Inventors

• Bernd Ostersehlt · Frankenthal (Pfalz), DE
• Rainer Schlecker · Bissersheim, DE
• Beatrice Rendenbach · Waldsee, DE
• Gerda von Philipsborn · Weinheim, DE
• Albrecht Franke

Key dates

• Filing date: Sep 12, 1988
• Grant date: May 25, 1993
• Expiry date: Sep 12, 2008

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07D487/14
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A tetracyclic quinazoline derivative of the formula I: ##STR1## wherein A is C.sub.2-3 -alkylene or C.sub.2-3 -alkylene which is substituted by one or two C.sub.1-4 -alkyl radicals or A is cyclohexylene; X is phenyl, naphthyl or phenyl or naphthyl which is substituted by halogen, nitro, amino, C.sub.1-4 -alkylamino, sulfonylamino, C.sub.1-4 -acylamino, hydroxyl, C.sub.1-4 -alkoxy, --O--(CH.sub.2).sub.2-4 --NR.sup.1 R.sup.2, C.sub.1-4 -alkyl or C.sub.1-4 -alkylsulfonyl, wherein R.sup.1 and R.sup.2 are each hydrogen or C.sub.1-4 -alkyl; or X is thienyl or thienyl which is substituted by chlorine, fluorine, methyl, ethyl, methoxy, ethoxy, nitro or hydroxyl; and R is hydrogen, halogen, nitro, amino, C.sub.1-4 -alkylamino, sulfonylamino, C.sub.1-4 -acylamino, hydroxyl, C.sub.1-4 -alkoxy, --O--(CH.sub.2).sub.2-4 --NR.sup.3 R.sup.4, C.sub.1-4 -alkyl or C.sub.1-4 -alkylsulfonyl, wherein R.sup.3 and R.sup.4 are each hydrogen or C.sub.1-4 -alkyl, and the pharmaceutically acceptable salts thereof. The compounds and compositions of the present invention are effective as antiarrhythmic agents.